Add mg_mqtt_next_unsub() signature

Add mg_mqtt_next_unsub
Tiny refactor in walkchunks()
2026-10-26 12:14:56 +00:00 · 2021-03-09 11:29:53 +00:00 · 2021-03-09 09:54:02 +00:00 · 2021-03-09 08:22:52 +00:00 · 2021-03-09 08:21:29 +00:00 · 2021-03-08 15:45:09 +00:00
258 changed files with 23121 additions and 10240 deletions
@@ -0,0 +1,6 @@
 BasedOnStyle: Google
 AllowShortFunctionsOnASingleLine: false
 SpaceAfterCStyleCast: true
 PointerBindsToType: false
 DerivePointerBinding: false
 IncludeBlocks: Preserve
@@ -0,0 +1,40 @@
 name: build
 on: [push, pull_request]
 jobs:
  linux:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - name: Install packages
      run: sudo apt-get install libmbedtls-dev
    - name: make
      run: make test test++ IPV6=0
    - name: openssl
      run: make test SSL=OPENSSL IPV6=0
    - name: examples
      run: make ex
  macos:
    runs-on: macos-latest
    steps:
    - uses: actions/checkout@v2
    - name: Install packages
      run: HOMEBREW_NO_AUTO_UPDATE=1 brew install jq mbedtls openssl
    - name: make
      run: make test++ upload-coverage IPV6=0
    - name: openssl
      run: make test SSL=OPENSSL IPV6=0
    - name: exports
      run: make mg_prefix
  windows:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
    - name: vc98
      run: make vc98
    - name: vc2017
      run: make vc2017
    - name: mingw
      run: make mingw
    - name: mingw++
      run: make mingw++
@@ -1,16 +1,16 @@
-Copyright (c) 2004-2013 Sergey Lyubka <valenok@gmail.com>
+Copyright (c) 2004-2013 Sergey Lyubka
-Copyright (c) 2013-2015 Cesanta Software Limited
+Copyright (c) 2013-2020 Cesanta Software Limited
 All rights reserved
-This code is dual-licensed: you can redistribute it and/or modify
+This software is dual-licensed: you can redistribute it and/or modify
 it under the terms of the GNU General Public License version 2 as
 published by the Free Software Foundation. For the terms of this
-license, see <http://www.gnu.org/licenses>.
+license, see <http://www.gnu.org/licenses/>.
-You are free to use this code under the terms of the GNU General
+You are free to use this software under the terms of the GNU General
 Public License, but WITHOUT ANY WARRANTY; without even the implied
 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 See the GNU General Public License for more details.
-Alternatively, you can license this code under a commercial
+Alternatively, you can license this software under a commercial
-license, as set out in <http://cesanta.com/>.
+license, as set out in <https://www.cesanta.com/license>.
@@ -0,0 +1,106 @@
 SRCS = $(wildcard src/*.c)
 HDRS = $(wildcard src/*.h)
 DEFS ?= -DMG_MAX_HTTP_HEADERS=5 -DMG_ENABLE_LINES -DMG_ENABLE_DIRECTORY_LISTING=1 -DMG_ENABLE_SSI=1
 CFLAGS ?= -W -Wall -Werror -Isrc -I. -O0 -g $(DEFS) $(TFLAGS) $(EXTRA)
 SSL ?= MBEDTLS
 CDIR ?= $(realpath $(CURDIR))
 VC98 = docker run --rm -e WINEDEBUG=-all -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/vc98
 VC2017 = docker run --rm -e WINEDEBUG=-all -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/vc2017
 MINGW = docker run --rm -v $(CDIR):$(CDIR) -w $(CDIR) docker.io/mdashnet/mingw
 GCC = docker run --rm -v $(CDIR):$(CDIR) -w $(CDIR) mdashnet/cc2
 VCFLAGS = /nologo /W3 /O2 /I. $(DEFS) $(TFLAGS)
 CLANG ?= clang # /usr/local/opt/llvm\@9/bin/clang
 IPV6 ?= 1
 ASAN_OPTIONS ?=
 EXAMPLES := $(wildcard examples/*)
 EXAMPLE_TARGET ?= example
 .PHONY: ex test
 ifeq "$(SSL)" "MBEDTLS"
 MBEDTLS_DIR ?= $(shell brew --cellar mbedtls)
 MBEDTLS_VER ?= $(shell brew info mbedtls --json | jq -j .[0].installed[0].version)
 MBEDTLS ?= $(MBEDTLS_DIR)/$(MBEDTLS_VER)
 CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
 LDFLAGS ?= -L$(MBEDTLS)/lib -lmbedtls -lmbedcrypto -lmbedx509
 endif
 ifeq "$(SSL)" "OPENSSL"
 OPENSSL_DIR ?= $(shell brew --cellar openssl)
 OPENSSL_VER ?= $(shell brew info openssl --json | jq -j .[0].installed[0].version)
 OPENSSL ?= $(OPENSSL_DIR)/$(OPENSSL_VER)
 CFLAGS += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSL)/include
 LDFLAGS ?= -L$(OPENSSL)/lib -lssl -lcrypto
 endif
 all: mg_prefix test test++ ex vc98 vc2017 mingw mingw++ linux linux++ infer fuzz
 ex:
 	@for X in $(EXAMPLES); do $(MAKE) -C $$X $(EXAMPLE_TARGET); done
 # Check that all external (exported) symbols have "mg_" prefix
 mg_prefix: mongoose.c mongoose.h
 	$(CLANG) mongoose.c $(CFLAGS) -c -o /tmp/x.o && nm /tmp/x.o | grep ' T' | grep -v 'mg_' ; test $$? = 1
 # C++ build
 test++: CLANG = g++ -Wno-deprecated -Wno-missing-field-initializers
 test++: unamalgamated
 # Make sure we can build from an unamalgamated sources
 unamalgamated: $(SRCS) $(HDRS) Makefile
 	$(CLANG) src/*.c test/unit_test.c $(CFLAGS) $(LDFLAGS) -g -o unit_test
 fuzz: mongoose.c mongoose.h Makefile test/fuzz.c
 	$(CLANG) mongoose.c test/fuzz.c $(CFLAGS) -DMG_ENABLE_LINES -DMG_ENABLE_LOG=0 -fsanitize=fuzzer,signed-integer-overflow,address $(LDFLAGS) -g -o fuzzer
 	$(DEBUGGER) ./fuzzer
 # make CLANG=/usr/local/opt/llvm\@8/bin/clang ASAN_OPTIONS=detect_leaks=1
 test: CFLAGS += -DMG_ENABLE_IPV6=$(IPV6) -fsanitize=address#,undefined
 test: mongoose.c mongoose.h  Makefile test/unit_test.c
 	$(CLANG) mongoose.c test/unit_test.c $(CFLAGS) -coverage $(LDFLAGS) -g -o unit_test
 	ASAN_OPTIONS=$(ASAN_OPTIONS) $(DEBUGGER) ./unit_test
 coverage: test
 	gcov -l -n *.gcno | sed '/^$$/d' | sed 'N;s/\n/ /'
 	gcov mongoose.gcno >/dev/null
 upload-coverage: coverage
 	curl -s https://codecov.io/bash | /bin/bash
 infer:
 	infer run -- cc test/unit_test.c -c -W -Wall -Werror -Isrc -I. -O2 -DMG_ENABLE_MBEDTLS=1 -DMG_ENABLE_LINES -I/usr/local/Cellar/mbedtls/2.23.0/include  -DMG_ENABLE_IPV6=1 -g -o /dev/null
 #vc98: VCFLAGS += -DMG_ENABLE_IPV6=1
 vc98: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(VC98) wine cl mongoose.c test/unit_test.c $(VCFLAGS) ws2_32.lib /Fe$@.exe
 	$(VC98) wine $@.exe
 #vc2017: VCFLAGS += -DMG_ENABLE_IPV6=1
 vc2017: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(VC2017) wine64 cl mongoose.c test/unit_test.c $(VCFLAGS) ws2_32.lib /Fe$@.exe
 	$(VC2017) wine64 $@.exe
 mingw: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(MINGW) i686-w64-mingw32-gcc mongoose.c test/unit_test.c -W -Wall -Werror -I. $(DEFS) -lwsock32 -o test.exe
 	$(VC98) wine test.exe
 mingw++: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(MINGW) i686-w64-mingw32-g++ mongoose.c test/unit_test.c -W -Wall -Werror -I. $(DEFS) -lwsock32 -o test.exe
  # Note: for some reason, a binary built with mingw g++, fails to run
 #linux: CFLAGS += -DMG_ENABLE_IPV6=$(IPV6)
 linux: CFLAGS += -fsanitize=address,undefined
 linux: Makefile mongoose.c mongoose.h test/unit_test.c
 	$(GCC) $(CC) mongoose.c test/unit_test.c $(CFLAGS) $(LDFLAGS) -o unit_test_gcc
 	$(GCC) ./unit_test_gcc
 linux++: CC = g++ -Wno-missing-field-initializers
 linux++: linux
 mongoose.c: $(SRCS) Makefile
 	(cat src/license.h; echo; echo '#include "mongoose.h"' ; (for F in src/private.h src/*.c ; do echo; echo '#ifdef MG_ENABLE_LINES'; echo "#line 1 \"$$F\""; echo '#endif'; cat $$F | sed -e 's,#include ".*,,'; done))> $@
 mongoose.h: $(HDRS) Makefile
 	(cat src/license.h src/version.h ; cat src/arch.h src/arch_*.h src/config.h src/str.h src/log.h src/timer.h src/util.h src/url.h src/iobuf.h src/base64.h src/md5.h src/sha1.h src/event.h src/net.h src/http.h src/ssi.h src/tls.h src/ws.h src/sntp.h src/mqtt.h src/dns.h | sed -e 's,#include ".*,,' -e 's,^#pragma once,,')> $@
 clean: EXAMPLE_TARGET = clean
 clean: ex
 	rm -rf $(PROG) *.o *.dSYM unit_test* ut fuzzer *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb slow-unit* _CL_* infer-out data.txt crash-*
@@ -1,76 +1,75 @@
-# <img src="http://cesanta.com/images/mongoose_logo.png" width="64" height="64"> Mongoose Web Server
+# Mongoose - Embedded Web Server / Embedded Networking Library
-Mongoose is the most easy to use web server on the planet. A web server of choice for Web developers (PHP, Ruby, Python, etc) and Web designers.
+![License: GPLv2](https://img.shields.io/badge/license-GPL_2-green.svg "License")
 [![Build Status]( https://github.com/cesanta/mongoose/workflows/build/badge.svg)](https://github.com/cesanta/mongoose/actions)
 [![Code Coverage](https://codecov.io/gh/cesanta/mongoose/branch/master/graph/badge.svg)](https://codecov.io/gh/cesanta/mongoose)
 [![Fuzzing Status](https://oss-fuzz-build-logs.storage.googleapis.com/badges/mongoose.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:mongoose)
-Mongoose is built on top of Libmongoose embedded library, which can turn
+Mongoose is a networking library for C/C++. It implements event-driven
-anything into a web server in 5 minutes worth of effort and few lines of code.
+non-blocking APIs for TCP, UDP, HTTP, WebSocket, MQTT.  It has been designed
-Libmongoose is used to serve Web GUI on embedded devices, implement RESTful
+for connecting devices and bringing them online. On the market since 2004, used
-services, RPC frameworks (e.g. JSON-RPC), handle telemetry data exchange, and
+by vast number of open source and commercial products - it even runs on the
-perform many other tasks in various different industries including aerospace,
+International Space Station!  Mongoose makes embedded network programming fast,
-manufacturing, finance, research, automotive, gaming, IT.
+robust, and easy.
 - [Download Mongoose Source Code here](https://www.cesanta.com/download.html)
 - [Read Mongoose documentation](https://cesanta.com/docs/)
-   * [Mailing list](http://groups.google.com/group/mongoose-users)
+Connectivity is vital for software and embedded devices, but there are many
-   * [Downloads](http://cesanta.com/products.shtml)
+pitfalls to consider when embedding a web server.  This white paper breaks down
-   * [Documentation](http://cesanta.com/docs.shtml)
+on the top 9 things to avoid when embedding a web server.
-Check out Fossa - our [embedded multi-protocol library](https://github.com/cesanta/fossa) with TCP,UDP,HTTP,Websocket,MQTT,DNS support, designed for Internet Of Things!
+- [Download “9 Things NOT to do when embedding a web server” white paper here](https://www.cesanta.com/whitepaper.html)
 # Looking for a pre-compiled Mongoose web server Windows or Mac binary?
 - [Download pre-compiled Mongoose web server binary](https://mongoose.ws/)
 # Looking for a complete IoT solution? Check out
 - [VCON](https://vcon.io) - Arduino compatible MCU modules with built-in firmware OTA updates
 - [Mongoose OS](https://mongoose-os.com) - open source embedded operating system for low-power connected microcontrollers. Secure, designed for commercial Internet of Things products
 # Support
 - [Study Mongoose examples](https://github.com/cesanta/mongoose/tree/master/examples)
 - [Support Forum - ask your technical questions here](https://forum.cesanta.com/c/mongoose-library/6)
 - [Commercial licensing and support available](https://www.cesanta.com/licensing.html)
 - [Check out latest releases](https://github.com/cesanta/mongoose/releases)
 # Features
- Works on Windows, Mac, UNIX/Linux, iPhone, Android eCos, QNX
+* Cross-platform: works on Linux/UNIX, MacOS, Windows, Android, FreeRTOS, etc
-and many other platforms
+* Supported embedded architectures: ESP32, ESP8266, TI, NRF52, STM32, PIC32, NXP, and more
- CGI, SSI, SSL, Digest auth, Websocket, WEbDAV, Resumed download,
+* Builtin protocols: plain TCP/UDP, HTTP, MQTT, Websocket
-  URL rewrite, file blacklist
+* SSL/TLS support: mbedTLS, OpenSSL or custom (via API)
- Custom error pages, Virtual hosts, IP-based ACL, Windows service,
+* Asynchronous DNS resolver
-  HTTP/HTTPS client
+* Tiny static and run-time footprint
- Simple and clean
+* Source code is both ISO C and ISO C++ compliant
-  [embedding API](https://github.com/cesanta/mongoose/blob/master/mongoose.h).
+* Very easy to integrate: just copy
-  The source is in single
+  [mongoose.c](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.c) and
-  [mongoose.c](https://github.com/cesanta/mongoose/blob/master/mongoose.c) file
+  [mongoose.h](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.h)
-  to make embedding easy
+  files to your build tree
 - Extremely lightweight, has a core of under 40kB and tiny runtime footprint
 - Asynchronous, non-blocking core supporting single- or multi-threaded usage
 - On the market since 2004 with over 1 million cumulative downloads
 - Stable, mature and tested, has several man-years invested
  in continuous improvement and refinement
 # Screenshots
 Download, double-click to start, run browser -- that's all!
 ![shot1](http://cesanta.com/images/tut_sharing/tut1.png)
 ![shot2](http://cesanta.com/images/tut_sharing/tut2.png)
 ![shot3](http://cesanta.com/images/tut_sharing/tut3.png)
 ![shot4](http://cesanta.com/images/tut_sharing/tut4.png)
 # Contributions
 People who have agreed to the
 [Cesanta CLA](http://cesanta.com/contributors_la.html)
 can make contributions. Note that the CLA isn't a copyright
 _assigment_ but rather a copyright _license_.
 You retain the copyright on your contributions.
 # Licensing
-Mongoose is released under commercial and
+Mongoose is released under Commercial and [GNU GPL v.2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) open source licenses.
-[GNU GPL v.2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.html) open
+
-source licenses. The GPLv2 open source License does not generally permit
+Commercial Projects: [Contact us for commercial license.](https://www.cesanta.com/contact.html)
-incorporating this software into non-open source programs. 
+
-For those customers who do not wish to comply with the GPLv2 open
+# Dashboard Example
-source license requirements,
+
-[Cesanta](http://cesanta.com) offers a full,
+Mongoose is often used to implement device dashboards and real-time
-royalty-free commercial license and professional support
+data exchange over Websocket. Here is a dashboard example that illustrates
-without any of the GPL restrictions.
+the functionality:
 ![](http://www.cesanta.com/images/dashboard.png)
 [Developing a new product? Contact us today to discuss how Mongoose can help.](https://www.cesanta.com/contact.html)
 # Contributions
 Contributions are welcome! Please follow the guidelines below:
 - Sign [Cesanta CLA](https://cesanta.com/cla.html) and send GitHub pull request
 - When making pull requests, please make sure that it has only one commit,
 and imlements/fixes only one piece of functionality
 # Other products by Cesanta
 - [Fossa](http://github.com/cesanta/fossa) - Multi-protocol networking library
 - [SSL Wrapper](https://github.com/cesanta/ssl_wrapper) - application to
  secure network communications
 - [Frozen](https://github.com/cesanta/frozen) - JSON parser and generator
 - [SLRE](https://github.com/cesanta/slre) - Super Light Regular Expression
  library
 - [V7](https://github.com/cesanta/v7) - Embedded JavaScript engine
@@ -1,249 +0,0 @@
 # Mongoose API Reference
    struct mg_server *mg_create_server(void *server_param, mg_handler_t handler);
 Creates web server instance. Returns opaque instance pointer, or NULL if
 there is not enough memory. `server_param`: Could be any pointer, or NULL.
 This pointer will be passed
 to the callback functions as `struct mg_connection::server_param` field.
 A common use case is to pass `this` pointer of the C++ wrapper class
 as `user_param`, to let the callback get the pointer to the C++ object.
 Note that this function doesn't make the
 server instance to serve. Serving is done by `mg_poll_server()` function.
 Mongoose has single-threaded, event-driven, asynchronous, non-blocking core.
 When server instance is created, it contains an information about
 the configuration and the state of each connection.
 Server instance is capable on listening on only one port. After creation,
 `struct mg_server` has a list
 of active connections and configuration parameters.
 Side-effect: on UNIX, `mg_create_server()` ignores SIGPIPE signals. If custom
 processing is required SIGPIPE, signal handler must be set up after
 calling `mg_create_server()`.
 Important: Mongoose does not install `SIGCHLD` handler. If CGI is used,
 `SIGCHLD` handler must be set up to reap CGI zombie processes.
    void mg_destroy_server(struct mg_server **server);
 Deallocates web server instance, closes all pending connections, and makes
 server pointer a NULL pointer.
    const char mg_set_option(struct mg_server *server, const char *name,
                             const char *value);
 Sets a particular server option. Note that at least one option,
 `listening_port`, must be specified. To serve static files, `document_root`
 must be specified too. If `document_root` option is left unset, Mongoose
 will not access filesystem at all. `mg_set_option()` returns NULL if option was
 set successfully, otherwise it returns human-readable error string. It is
 allowed to call `mg_set_option()` by the same thread that does
 `mg_poll_server()` (Mongoose thread) and change server configuration while it
 is serving, in between `mg_poll_server()` calls.
    int mg_poll_server(struct mg_server *server, int milliseconds);
 Performs one iteration of IO loop by iterating over all
 active connections, performing `select()` syscall on all sockets with a timeout
 of `milliseconds`. When `select()` returns, Mongoose
 does an IO for each socket that has data to be sent or received. Application
 code must call `mg_poll_server()` in a loop. It is an error to have more then
 one thread calling `mg_poll_server()`, `mg_set_option()` or any other function
 that take `struct mg_server *` parameter. Mongoose does not
 mutex-protect `struct mg_server *`, therefore only single thread
 (Mongoose thread) should make Mongoose calls.
 `mg_poll_server()` calls user-specified event handler when certain events
 occur. Sequence of events for the accepted connection is this:
   * `MG_AUTH` - Mongoose asks whether this connection is authorized. If event
      handler returns `MG_FALSE`, then Mongoose does not serve the request but
      sends authorization request to the client. If `MG_TRUE` is returned,
      then Mongoose continues on with the request.
   * `MG_REQUEST` - Mongoose asks event handler to serve the request. If
      event handler serves the request by sending a reply,
      it should return `MG_TRUE`. Otherwise,
      it should return `MG_FALSE` which tells Mongoose that request is not
      served and Mongoose should serve it. For example, event handler might
      choose to serve only RESTful API requests with URIs that start with
      certain prefix, and let Mongoose serve all static files.
      If event handler decides to serve the request, but doesn't have
      all the data at the moment, it should return `MG_MORE`. That tells
      Mongoose to keep the connection open after callback returns.
      `mg_connection::connection_param` pointer is a placeholder to keep
      user-specific data. For example, handler could decide to open a DB
      connection and store DB connection handle in `connection_param`.
   * `MG_POLL` is sent to every connection on every iteration of
      `mg_poll_server()`. Event handler should return `MG_FALSE` to ignore
      this event. If event handler returns `MG_TRUE`, then Mongoose assumes
      that event handler has finished sending data, and Mongoose will
      close the connection.
   * `MG_HTTP_ERROR` sent when Mongoose is about to send HTTP error back
      to the client. Event handler can choose to send a reply itself, in which
      case event handler must return `MG_TRUE`. Otherwise, event handler must
      return `MG_FALSE`.
   * `MG_CLOSE` is sent when the connection is closed. This event is used
      to cleanup per-connection state stored in `connection_param`
      if it was allocated. Event handler return value is ignored.
 Sequence of events for the client connection is this:
   * `MG_CONNECT` sent when Mongoose has connected to the remote host.
   This event is sent to the connection initiated by `mg_connect()` call.
   Connection status is held in `mg_connection::status_code`: if zero,
   then connection was successful, otherwise connection was not established.
   User should send a request upon successful connection.
   Event handler should return `MG_TRUE` if connection was successful and
   HTTP request has been sent. Otherwise, it should send `MG_FALSE`.
   * `MG_REPLY` is sent when response has been received from the remote host.
   If event handler sends another request, then it should return `MG_TRUE`.
   Otherwise it should return `MG_FALSE` and Mongoose will close the connection.
   * `MG_CLOSE` same as for the accepted connection.
 When mongoose buffers in HTTP request and successfully parses it, it sends
 `MG_REQUEST` event for GET requests immediately. For POST requests,
 Mongoose delays the call until the whole POST request is buffered in memory.
 POST data is available to the callback as `struct mg_connection::content`,
 and POST data length is in `struct mg_connection::content_len`.
 Note that websocket connections are treated the same way. Mongoose buffers
 websocket frame in memory, and calls event handler when frame is fully
 buffered. Frame data is available `struct mg_connection::content`, and
 data length is in `struct mg_connection::content_len`, i.e. very similar to
 the POST request. `struct mg_connection::is_websocket` flag indicates
 whether the request is websocket or not. Also, for websocket requests,
 there is `struct mg_connection::wsbits` field which contains first byte
 of the websocket frame which URI handler can examine. Note that to
 reply to the websocket client, `mg_websocket_write()` should be used.
 To reply to the plain HTTP client, `mg_write_data()` should be used.
 Return value: number of active connections.
    const char **mg_get_valid_option_names(void);
 Returns a NULL-terminated array of option names and their default values.
 There are two entries per option in an array: an option name followed by a
 default value. A default value could be NULL. A NULL name indicates an end
 of the array.
    const char *mg_get_option(const struct mg_server *server, const char *name);
 Returns the value of particular configuration parameter. If
 given parameter name is not valid, NULL is returned. For valid names, return
 value is guaranteed to be non-NULL. If parameter is not set, zero-length string
 is returned.
    void mg_wakeup_server_ex(struct mg_server *, mg_handler_t func,
                             const char *fmt, ...);
 Sends string message to a server. Function `func` is called for every active
 connection. String message is passed in `struct mg_connection::callback_param`.
 This function is designed to push data to the connected clients, and
 can be called from any thread. There is a limitation on the length of
 the message, currently at 8 kilobytes.
    void mg_send_status(struct mg_connection *, int status_code);
    void mg_send_header(struct mg_connection *, const char *name,
                        const char *value);
    void mg_send_data(struct mg_connection *, const void *data, int data_len);
    void mg_printf_data(struct mg_connection *, const char *format, ...);
 These functions are used to construct a response to the client. HTTP response
 consists of three parts: a status line, zero or more HTTP headers,
 a response body.  Mongoose provides functions for all three parts:
   * `mg_send_status()` is used to create status line. This function can be
      called zero or once. If `mg_send_status()` is not called, then Mongoose
      will send status 200 (success) implicitly.
   * `mg_send_header()` adds HTTP header to the response. This function could
      be called zero or more times.
   * `mg_send_data()` and `mg_printf_data()` are used to send data to the
     client. Note that Mongoose adds `Transfer-Encoding: chunked` header
     implicitly, and sends data in chunks. Therefore, it is not necessary to
     set `Content-Length` header. Note that `mg_send_data()` and
     `mg_printf_data()` do not send data immediately. Instead, they spool
     data in memory, and Mongoose sends that data later after URI handler
     returns. If data to be sent is huge, an URI handler might
     send data in pieces by saving state in
     `struct mg_connection::connection_param` variable and returning `0`. Then
     Mongoose will call a handler repeatedly after each socket write.
 <!-- -->
     void mg_send_file(struct mg_connection *, const char *path);
 Tells Mongoose to serve given file. Mongoose handles file according to
 it's extensions, i.e. Mongoose will invoke CGI script if `path` has CGI
 extension, it'll render SSI file if `path` has SSI extension, etc. If `path`
 points to a directory, Mongoose will show directory listing. If this function
 is used, no calls to `mg_send*` or `mg_printf*` functions must be made, and
 event handler must return `MG_MORE`.
    size_t mg_websocket_write(struct mg_connection* conn, int opcode,
                              const char *data, size_t data_len);
    size_t mg_websocket_printf(struct mg_connection* conn, int opcode,
                               const char *fmt, ...);
 Similar to `mg_write()` and `mg_printf()`, but wraps the data into a
 websocket frame with a given websocket `opcode`.
    const char *mg_get_header(const struct mg_connection *, const char *name);
 Get the value of particular HTTP header. This is a helper function.
 It traverses http_headers array, and if the header is present in the array,
 returns its value. If it is not present, NULL is returned.
    int mg_get_var(const struct mg_connection *conn, const char *var_name,
                   char *buf, size_t buf_len);
 Gets HTTP form variable. Both POST buffer and query string are inspected.
 Form variable is url-decoded and written to the buffer. On success, this
 function returns the length of decoded variable. On error, -1 is returned if
 variable not found, and -2 is returned if destination buffer is too small
 to hold the variable. Destination buffer is guaranteed to be
 '\0' - terminated if it is not NULL or zero length.
    int mg_parse_header(const char *hdr, const char *var_name, char *buf,
                        size_t buf_size);
 This function parses HTTP header and fetches given variable's value in a buffer.
 A header should be like `x=123, y=345, z="other value"`. This function is
 designed to parse Cookie headers, Authorization headers, and similar. Returns
 the length of the fetched value, or 0 if variable not found.
    int mg_modify_passwords_file(const char *passwords_file_name,
                                 const char *domain,
                                 const char *user,
                                 const char *password);
 Add, edit or delete the entry in the passwords file.
 This function allows an application to manipulate .htpasswd files on the
 fly by adding, deleting and changing user records. This is one of the
 several ways of implementing authentication on the server side.
 If password is not NULL, entry is added (or modified if already exists).
 If password is NULL, entry is deleted.
 Return: 1 on success, 0 on error.
    int mg_parse_multipart(const char *buf, int buf_len,
                           char *var_name, int var_name_len,
                           char *file_name, int file_name_len,
                           const char **data, int *data_len);
 Parses a buffer that contains multipart form data. Stores chunk name
 in a `var_name` buffer. If chunk is an uploaded file, then `file_name`
 will have a file name. `data` and `data_len` will point to the chunk data.
 Returns number of bytes to skip to the next chunk.
     struct mg_connection *mg_connect(struct mg_server *server,
                                      const char *host, int port, int use_ssl);
 Create connection to the remote host. Returns `NULL` on error, non-null
 if the connection has been scheduled for connection. Upon a connection,
 Mongoose will send `MG_CONNECT` event to the event handler.
@@ -1,27 +0,0 @@
 # Mongoose Build on Android
 This is a small guide to help you run mongoose on Android. Currently it is
 tested on the HTC Wildfire. If you have managed to run it on other devices
 as well, please comment or drop an email in the mailing list.
 Note : You dont need root access to run mongoose on Android.
 - Clone Mongoose Git repo
 - Download the Android NDK from [http://developer.android.com/tools/sdk/ndk/index.html](http://developer.android.com/tools/sdk/ndk/index.html)
 - Run `/path-to-ndk/ndk-build -C /path/to/mongoose`
  That should generate mongoose/lib/armeabi/mongoose
 - Using the adb tool (you need to have Android SDK installed for that),
  push the generated mongoose binary to `/data/local` folder on device.
 - From adb shell, navigate to `/data/local` and execute `./mongoose`.
 - To test if the server is running fine, visit your web-browser and
  navigate to `http://127.0.0.1:8080` You should see the `Index of /` page.
 ![screenshot](http://cesanta.com/images/android_build.png)
 Notes:
 - `jni` stands for Java Native Interface. Read up on Android NDK if you want
  to know how to interact with the native C functions of mongoose in Android
  Java applications.
 - TODO: A Java application that interacts with the native binary or a
  shared library.
@@ -1,34 +0,0 @@
 How To Create Basic Website With Mongoose
 ===========================================
 ## 1. Create a directory which will contain your website files. For example, on drive `C:\`, create a directory called `my_website`:
 ![screenshot](http://cesanta.com/images/tut_basic/tut1.png)
 ## 2. Inside `my_website` directory, create a new file called "index". This will be the default web page shown when the website is visited.
 ![screenshot](http://cesanta.com/images/tut_basic/tut2.png)
 ## 3. Open index file with your favorite editor (for example, Notepad) and enter some HTML code:
 ![screenshot](http://cesanta.com/images/tut_basic/tut3.png)
 ## 4. Save this file as `index.html`:
 ![screenshot](http://cesanta.com/images/tut_basic/tut4.png)
 ## 5. Download Mongoose executable from http://cesanta.com/mongoose.shtml and copy the executable inside `my_website` directory:
 ![screenshot](http://cesanta.com/images/tut_basic/tut5.png)
 ## 6. Double-click mongoose executable. An icon will appear on a system tray in the bottom right corner of the desktop:
 ![screenshot](http://cesanta.com/images/tut_basic/tut6.png)
 ## 7. Click on the mongoose icon and choose "Go to my address" menu:
 ![screenshot](http://cesanta.com/images/tut_basic/tut7.png)
 ## 8. A browser will popup displaying `index.html` file. Now, you can expand your website by adding more content.
 ![screenshot](http://cesanta.com/images/tut_basic/tut8.png)
@@ -1,173 +0,0 @@
 # Mongoose Embedding Guide
 Embedding Mongoose is done in two steps:
   1. Copy
    [mongoose.c](https://raw.github.com/cesanta/mongoose/master/mongoose.c) and
    [mongoose.h](https://raw.github.com/cesanta/mongoose/master/mongoose.h)
    to your application's source tree and include them in the build.
   2. Somewhere in the application code, call `mg_create_server()` to create
    a server, configure it with `mg_set_option()` and loop with
    `mg_poll_server()` until done. Call `mg_destroy_server()` to cleanup.
 Here's a minimal application `app.c` that embeds mongoose:
    #include "mongoose.h"
    int main(void) {
      struct mg_server *server = mg_create_server(NULL, NULL);
      mg_set_option(server, "document_root", ".");      // Serve current directory
      mg_set_option(server, "listening_port", "8080");  // Open port 8080
      for (;;) {
        mg_poll_server(server, 1000);   // Infinite loop, Ctrl-C to stop
      }
      mg_destroy_server(&server);
      return 0;
    }
 To compile it, put `mongoose.c`, `mongoose.h` and `app.c` into one
 folder, start terminal on UNIX or Visual Studio command line prompt on Windows,
 and run the following command:
    cc app.c mongoose.c -pthread -o app     # on Unix
    cl.exe app.c mongoose.c /TC /MD         # on Windows
 When run, this simple application opens port 8080 and serves static files,
 CGI files and lists directory content in the current working directory.
 It is possible to generate HTML page content. Mongoose can call user-defined
 function when certain events occur.
 That function is called _an event handler_, and it is the second parameter
 to `mg_create_server()` function. Here is the example event handler function:
    int event_handler(struct mg_connection *conn, enum mg_event ev) {
      switch (ev) {
        case MG_AUTH: return MG_TRUE;
        default: return MG_FALSE;
      }
    }
 Event handler is called by Mongoose with `struct mg_connection *`
 pointer and an event number. `struct mg_connection *conn`
 has all information about the request: HTTP headers, POST or websocket
 data buffer, etcetera. `enum mg_event ev` tells which exactly event is sent.
 For each event, an event handler returns a value which tells Mongoose how
 to behave.
 The sequence of events for every connection is this:
   * `MG_AUTH` - Mongoose asks whether this connection is authorized. If event
      handler returns `MG_FALSE`, then Mongoose does not serve the request but
      sends authorization request to the client. If `MG_TRUE` is returned,
      then Mongoose continues on with the request.
   * `MG_REQUEST` - Mongoose asks event handler to serve the request. If
      event handler serves the request by sending a reply,
      it should return `MG_TRUE`. Otherwise,
      it should return `MG_FALSE` which tells Mongoose that request is not
      served and Mongoose should serve it. For example, event handler might
      choose to serve only RESTful API requests with URIs that start with
      certain prefix, and let Mongoose serve all static files.
      If event handler decides to serve the request, but doesn't have
      all the data at the moment, it should return `MG_MORE`. That tells
      Mongoose to keep the connection open after callback returns.
      `mg_connection::connection_param` pointer is a placeholder to keep
      user-specific data. For example, handler could decide to open a DB
      connection and store DB connection handle in `connection_param`.
   * `MG_POLL` is sent to every connection on every iteration of
      `mg_poll_server()`. Event handler should return `MG_FALSE` to ignore
      this event. If event handler returns `MG_TRUE`, then Mongoose assumes
      that event handler has finished sending data, and Mongoose will
      close the connection.
   * `MG_HTTP_ERROR` sent when Mongoose is about to send HTTP error back
      to the client. Event handler can choose to send a reply itself, in which
      case event handler must return `MG_TRUE`. Otherwise, event handler must
      return `MG_FALSE`
   * `MG_CLOSE` is sent when the connection is closed. This event is used
      to cleanup per-connection state stored in `connection_param`
      if it was allocated.
 Let's extend our minimal application example and
 create an URI that will be served by user's C code. The app will handle
 `/hello` URI by showing a hello message. So, when app is run,
 http://127.0.0.1:8080/hello will say hello, and here's the code:
    #include <string.h>
    #include "mongoose.h"
    static int event_handler(struct mg_connection *conn, enum mg_event ev) {
      if (ev == MG_AUTH) {
        return MG_TRUE;   // Authorize all requests
      } else if (ev == MG_REQUEST && !strcmp(conn->uri, "/hello")) {
        mg_printf_data(conn, "%s", "Hello world");
        return MG_TRUE;   // Mark as processed
      } else {
        return MG_FALSE;  // Rest of the events are not processed
      }
    }
    int main(void) {
      struct mg_server *server = mg_create_server(NULL, event_handler);
      mg_set_option(server, "document_root", ".");
      mg_set_option(server, "listening_port", "8080");
      for (;;) {
        mg_poll_server(server, 1000);  // Infinite loop, Ctrl-C to stop
      }
      mg_destroy_server(&server);
      return 0;
    }
 ## Example code
 Mongoose source code contains number of examples, located in the
 [examples](https://github.com/cesanta/mongoose/blob/master/examples/) directory.
 To build any example, go to the respective directory and run `make`.
 ## Compilation flags
 Below is the list of compilation flags that enable or disable certain
 features. By default, some features are enabled, and could be disabled
 by setting appropriate `NO_*` flag. Features that are disabled by default
 could be enabled by setting appropriate `USE_*` flag. Bare bones Mongoose
 is quite small, about 30 kilobytes of compiled x86 code. Each feature adds
 a couple of kilobytes to the executable size, and also has some runtime penalty.
 Note that some flags start with `NS_` prefix. This is because Mongoose uses
 [Net Skeleton](http://github.com/cesanta/net_skeleton) as a low-level
 networking engine. If user code has `#include <net_skeleton.h>`, then
 all Net Skeleton functions will be available too.
    -DMONGOOSE_NO_AUTH          Disable MD5 authorization support
    -DMONGOOSE_NO_CGI           Disable CGI support
    -DMONGOOSE_NO_DAV           Disable WebDAV support
                                (PUT, DELETE, MKCOL, PROPFIND methods)
    -DMONGOOSE_NO_DIRECTORY_LISTING  Disable directory listing
    -DMONGOOSE_NO_FILESYSTEM    Disables all file IO, serving from memory only
    -DMONGOOSE_NO_LOGGING       Disable access/error logging
    -DMONGOOSE_ENABLE_THREADS   Enable mg_start_thread() function
    -DMONGOOSE_NO_WEBSOCKET     Disable WebSocket support
    -DMONGOOSE_NO_USER          No concept of a user on used platform.
                                (Platform does not provide getpwnam, setgid or setuid)
    -DMONGOOSE_USE_IDLE_TIMEOUT_SECONDS=X Idle connection timeout, default is 30
    -DMONGOOSE_USE_LUA          Enable Lua scripting
    -DMONGOOSE_USE_LUA_SQLITE3  Enable sqlite3 binding for Lua
    -DMONGOOSE_USE_POST_SIZE_LIMIT=X      POST requests larger than X will be
                                          rejected, not set by default
    -DMONGOOSE_USE_EXTRA_HTTP_HEADERS=X   Append X to the HTTP headers
                                          for static files, empty by default
    -DNS_ENABLE_DEBUG         Enables debug messages on stdout, very noisy
    -DNS_ENABLE_SSL           Enable SSL
    -DNS_ENABLE_IPV6          Enable IPv6 support
    -DNS_ENABLE_HEXDUMP       Enables hexdump of sent and received traffic
    -DNS_STACK_SIZE=X         Sets stack size to X for  ns_start_thread()
    -DNS_DISABLE_THREADS      Disable threads support
    -DNS_DISABLE_SOCKETPAIR   For systems without loopback interface
    -DMONGOOSE_SEND_NS_EVENTS Send Net Skeleton events to the event handler
                              in addition to the Mongoose events
@@ -1,45 +0,0 @@
 # Mongoose FAQ
 ## My Antivirus Software reports Mongoose as a security threat
 Mongoose doesn't contain any malicious logic. Antivirus reports a
 [false positive](http://en.wikipedia.org/wiki/Type_I_and_type_II_errors#False_positive_error).
 This is when certain byte sequence in Mongoose accidentally matches
 virus signature in the Antivirus database.
 ## Download page doesn't work
 Please make sure Javascript is enabled in your browser, and that the
 antivirus software is not blocking the download.
 ## MacOS message: "Mongoose.app is damaged and can’t be opened. You should move it to the Trash"
 This happens on newer MacOS systems. The reason for the message
 is the fact Mongoose.app is not digitally signed.
 Mongoose download procedure changes the app on the fly by injecting
 user information in the binary, making any prior digital signature void.
 Open "System Preferences" -> "Security"  and set "Allow apps downloaded from"
 to "Anywhere".  Revert the settings once Mongoose is installed.
 ## PHP doesn't work: getting empty page, or 'File not found' error
 The reason for that is wrong paths to the interpreter. Remember that with PHP,
 correct interpreter is `php-cgi.exe` (`php-cgi` on UNIX). Solution: specify
 full path to the PHP interpreter, e.g.:
    mongoose -cgi_interpreter /full/path/to/php-cgi
 ## Mongoose fails to start
 If Mongoose exits immediately when run, this
 usually indicates a syntax error in the configuration file
 (named `mongoose.conf` by default) or the command-line arguments.
 Syntax checking is omitted from Mongoose to keep its size low. However,
 the Manual should be of help. Note: the syntax changes from time to time,
 so updating the config file might be necessary after executable update.
 ### Embedding with OpenSSL on Windows might fail because of calling convention
 To force Mongoose to use `__stdcall` convention, add `/Gz` compilation
 flag to the Visual Studio project settings.
@@ -1,18 +0,0 @@
 How To Share Files With Mongoose
 ===========================================
 ## 1. Download Mongoose executable from http://cesanta.com/mongoose.shtml and copy the executable inside the directory you want to share:
 ![screenshot](http://cesanta.com/images/tut_sharing/tut1.png)
 ## 2. Double-click mongoose executable. A browser will start automatically, an icon will appear on a system tray in the bottom right corner of the desktop:
 ![screenshot](http://cesanta.com/images/tut_sharing/tut2.png)
 ## 3. Click on the mongoose icon
 ![screenshot](http://cesanta.com/images/tut_sharing/tut3.png)
 ## 4. Click on "Go to my address" to launch a browser locally. Or, to access a folder from another machine, launch a browser and type in the URL:
 ![screenshot](http://cesanta.com/images/tut_sharing/tut4.png)
@@ -1,44 +0,0 @@
 # Mongoose Internals
 Mongoose has single-threaded, event-driven, asynchronous, non-blocking core.
 `mg_create_server()` creates a web server instance. An instance is a container
 for the config options and list of active connections. To do the actual
 serving, user must call `mg_poll_server()`, which iterates over all
 active connections, performing `select()` syscall on all sockets with a
 timeout of specified number of milliseconds. When `select()` returns, Mongoose
 does an IO for each socket that has data to be sent or received. Application
 code must call `mg_poll_server()` in a loop.
 Mongoose server instance is designed to be used by a single thread.
 It is an error to have more then
 one thread calling `mg_poll_server()`, `mg_set_option()` or any other function
 that take `struct mg_server *` parameter. Mongoose does not
 mutex-protect `struct mg_server *`, therefore the best practice is
 to call server management functions from the same thread (an IO thread).
 On a multi-core systems, many server instances can be created, sharing the
 same listening socket and managed by separate threads (see [multi_threaded.c](https://github.com/cesanta/mongoose/blob/master/examples/multi_threaded.c))
 example.
 It is an error to pass and store `struct mg_connection *` pointers for
 later use to send data. The reason is that they can be invalidated by the
 next `mg_poll_server()` call. For such a task,
 there is `mg_iterate_over_connections()` API
 exists, which sends a callback function to the IO thread, then IO thread
 calls specified function for all active connection.
 When mongoose buffers in HTTP request and successfully parses it, it calls
 appropriate URI handler immediately for GET requests. For POST requests,
 Mongoose delays the call until the whole POST request is buffered in memory.
 POST data is available to the callback as `struct mg_connection::content`,
 and POST data length is in `struct mg_connection::content_len`.
 Note that websocket connections are treated the same way. Mongoose buffers
 websocket frame in memory, and calls URI handler when frame is fully
 buffered. Frame data is available `struct mg_connection::content`, and
 data length is in `struct mg_connection::content_len`, i.e. very similar to
 the POST request. `struct mg_connection::is_websocket` flag indicates
 whether the request is websocket or not. Also, for websocket requests,
 there is `struct mg_connection::wsbits` field which contains first byte
 of the websocket frame which URI handler can examine. Note that to
 reply to the websocket client, `mg_websocket_write()` should be used.
 To reply to the plain HTTP client, `mg_write()` should be used.
@@ -1,154 +0,0 @@
 # Mongoose Configuration Options
 ### access\_control\_list
 An Access Control List (ACL) allows restrictions to be put on the list of IP
 addresses which have access to the web server. In the case of the Mongoose
 web server, the ACL is a comma separated list of IP subnets, where each
 subnet is prepended by either a `-` or a `+` sign. A plus sign means allow,
 where a minus sign means deny. If a subnet mask is omitted, such as `-1.2.3.4`,
 this means to deny only that single IP address.
 Subnet masks may vary from 0 to 32, inclusive. The default setting is to allow
 all accesses. On each request the full list is traversed, and
 the last match wins. Example: `$ mongoose -access_control_list -0.0.0.0/0,+192.168/16` to deny all acccesses except those from `192.168/16` subnet. Note that if the option is set, then all accesses are forbidden
 by default. Thus in a previous example, `-0.0.0.0` part is not necessary.
 For example, `$mongoose access_control_list +10.0.0.0/8`
 means disallow all, allow subnet 10/8 only.
 To learn more about subnet masks, see the
 [Wikipedia page on Subnetwork](http://en.wikipedia.org/wiki/Subnetwork)
 Default: not set, all accesses are allowed.
 ### access\_log\_file
 Path to a file for access logs. Either full path, or relative to the
 mongoose executable. Default: not set, no query logging is done.
 ### auth_domain
 Authorization realm used in `.htpasswd` authorization. Default: `mydomain.com`
 ### cgi_interpreter
 Path to an executable to be used use as an interpreter for __all__ CGI scripts
 regardless script extension.  Default: not set, Mongoose looks at
 [shebang line](http://en.wikipedia.org/wiki/Shebang_(Unix\).
 For example, if both PHP and perl CGIs are used, then
 `#!/path/to/php-cgi.exe` and `#!/path/to/perl.exe` must be first lines of the
 respective CGI scripts. Note that paths should be either full file paths,
 or file paths relative to the directory where mongoose executable is located.
 If all CGIs use the same interpreter, for example they are all PHP, then
 `cgi_interpreter` option can be set to the path to `php-cgi.exe` executable and
 shebang line in the CGI scripts can be omitted.
 **Note**: PHP scripts must use `php-cgi.exe`, not `php.exe`.
 ### cgi_pattern
 All files that match `cgi_pattern` are treated as CGI files. Default pattern
 allows CGI files be anywhere. To restrict CGIs to a certain directory,
 use `/path/to/cgi-bin/**.cgi` as a pattern. Note that **full file path** is
 matched against the pattern, not the URI.
 When Mongoose starts CGI program, it creates new environment for it (in
 contrast, usually child program inherits the environment from parent). Several
 environment variables however are inherited from Mongoose's environment,
 they are: `PATH`, `TMP`, `TEMP`, `TMPDIR`, `PERLLIB`, `MONGOOSE_CGI`. On UNIX
 it is also `LD_LIBRARY_PATH`. On Windows it is also `COMSPEC`, `SYSTEMROOT`,
 `SystemDrive`, `ProgramFiles`, `ProgramFiles(x86)`, `CommonProgramFiles(x86)`.
 Default: `**.cgi$|**.pl$|**.php$`
 ### dav\_auth\_file
 Authentication file for WebDAV mutation requests: `PUT`, `DELETE`, `MKCOL`.
 The format of that file is the same as for the `.htpasswd` file
 used for digest authentication. It can be created and managed by
 `mongoose -A` command. Default: not set, WebDAV mutations are disallowed.
 ### document_root
 A directory to serve. Default: current working directory.
 ### enable\_directory\_listing
 Enable directory listing, either `yes` or `no`. Default: `yes`.
 ### enable\_proxy
 Enable proxy functionality, either `yes` or `no`. If set to `yes`, then
 browsers can be configured to use Mongoose as a proxy. Default: `no`.
 ### extra\_mime\_types
 Extra mime types to recognize, in form `extension1=type1,extension2=type2,...`.
 Extension must include dot.  Example:
 `mongoose -extra_mime_types .cpp=plain/text,.java=plain/text`. Default: not set.
 ### global\_auth\_file
 Path to a global passwords file, either full path or relative to the mongoose
 executable. If set, per-directory `.htpasswd` files are ignored,
 and all requests are authorised against that file. Use `mongoose -A` to
 manage passwords, or third party utilities like
 [htpasswd-generator](http://www.askapache.com/online-tools/htpasswd-generator).
 Default: not set, per-directory `.htpasswd` files are respected.
 ### hide\_files\_patterns
 A pattern for the files to hide. Files that match the pattern will not
 show up in directory listing and return `404 Not Found` if requested. Pattern
 must be for a file name only, not including directory name, e.g.
 `mongoose -hide_files_patterns secret.txt|even_more_secret.txt`. Default:
 not set.
 ### index_files
 Comma-separated list of files to be treated as directory index
 files. Default: `index.html,index.htm,index.cgi,index.shtml,index.php`
 ### listening_port
 Port to listen on. Port could be prepended by the specific IP address to bind
 to, e.g. `mongoose -listening_port 127.0.0.1:8080`. Otherwise Mongoose
 will bind to all addresses. To enable SSL, build Mongoose with
 `-DNS_ENABLE_SSL` compilation option, and specify `listening_port` as
 `ssl://PORT:SSL_CERTIFICATE.PEM`. Example SSL listener:
 `mongoose -listening_port ssl://8043:ssl_cert.pem`. Note that PEM file should
 be in PEM format, and must have both certificate and private key in it,
 concatenated together. More than one listening port can be specified,
 separated by comma,
 for example `mongoose -listening_port 8080,8000`. Default: 8080.
 ### run\_as\_user
 Switch to given user credentials after startup. UNIX-only. This option is
 required when mongoose needs to bind on privileged port on UNIX, e.g.
    $ sudo mongoose -listening_port 80 -run_as_user nobody
 Default: not set.
 ### url\_rewrites
 Comma-separated list of URL rewrites in the form of
 `uri_pattern=file_or_directory_path`. When Mongoose receives the request,
 it constructs the file name to show by combining `document_root` and the URI.
 However, if the rewrite option is used and `uri_pattern` matches the
 requested URI, then `document_root` is ignored. Instead,
 `file_or_directory_path` is used, which should be a full path name or
 a path relative to the web server's current working directory. Note that
 `uri_pattern`, as all mongoose patterns, is a prefix pattern. If `uri_pattern`
 is a number, then it is treated as HTTP error code, and `file_or_directory_path`
 should be an URI to redirect to. Mongoose will issue `302` temporary redirect
 to the specified URI with following parameters:
 `?code=HTTP_ERROR_CODE&orig_uri=ORIGINAL_URI&query_string=QUERY_STRING`.
 If `uri_pattern` starts with `@` symbol, then Mongoose compares
 it with the `HOST` header of the request. If they are equal, Mongoose sets
 document root to `file_or_directory_path`, implementing virtual hosts support.
 Examples:
    # Redirect all accesses to `.doc` files to a special script
    mongoose -url_rewrites **.doc$=/path/to/cgi-bin/handle_doc.cgi
    # Implement user home directories support
    mongoose -url_rewrites /~joe/=/home/joe/,/~bill=/home/bill/
    # Redirect 404 errors to a specific error page
    mongoose -url_rewrites 404=/cgi-bin/error.cgi
    # Virtual hosts example: serve foo.com domain from different directory
    mongoose -url_rewrites @foo.com=/var/www/foo.com
 Default: not set.
@@ -1,49 +0,0 @@
 How To Create A PHP Website With Mongoose
 ===========================================
 ## 1. Create a directory which will contain your website files. For example, on drive `C:\`, create a directory called `my_website`:
 ![screenshot](http://cesanta.com/images/tut_php/tut1.png)
 ## 2. Inside `my_website` directory, create a new file called "index". This will be the default web page shown when the website is visited.
 ![screenshot](http://cesanta.com/images/tut_php/tut2.png)
 ## 3. Open index file with your favorite editor (for example, Notepad) and enter some HTML / PHP code:
 ![screenshot](http://cesanta.com/images/tut_php/tut3.png)
 ## 4. Save this file as `index.php`:
 ![screenshot](http://cesanta.com/images/tut_php/tut4.png)
 ## 5. Download Mongoose executable from http://cesanta.com/mongoose.shtml and copy the executable inside `my_website` directory:
 ![screenshot](http://cesanta.com/images/tut_php/tut5.png)
 ## 6. Double-click mongoose executable. An icon will appear on a system tray in the bottom right corner of the desktop:
 ![screenshot](http://cesanta.com/images/tut_php/tut6.png)
 ## 7. Download PHP 5.3 zip (do NOT download PHP 5.5 cause you might have missing DLLs problem) from http://windows.php.net/download and extract it to `C:\php5` directory:
 ![screenshot](http://cesanta.com/images/tut_php/tut7.png)
 ## 8. Click on the mongoose icon and choose "Edit Settings" menu.:
 ![screenshot](http://cesanta.com/images/tut_php/tut8.png)
 ## 9. A settings dialog will appear. Click on `cgi_interpreter` button:
 ![screenshot](http://cesanta.com/images/tut_php/tut9.png)
 ## 10. Choose `C:\php5\php-cgi.exe` and click "Save Settings":
 ![screenshot](http://cesanta.com/images/tut_php/tut10.png)
 ## 11. Click on the mongoose icon and choose "Go to my address" menu:
 ![screenshot](http://cesanta.com/images/tut_php/tut11.png)
 ## 12. A browser will popup displaying `index.php`.
 ![screenshot](http://cesanta.com/images/tut_php/tut12.png)
@@ -1,218 +0,0 @@
 # Mongoose Release Notes
 ## Release 5.6, 2015-03-17
 Changes in Libmongoose library:
 - Added `-dav_root` configuration option that gives an ability to mount
  a different root directory (not document_root)
 - Fixes for build under Win23 and MinGW
 - Bugfix: Double dots removal
 - Bugfix: final chunked response double-send
 - Fixed compilation in 64-bit environments
 - Added OS/2 compatibility
 - Added `getaddrinfo()` call and `NS_ENABLE_GETADDRINFO`
 - Various SSL-related fixes
 - Added integer overflow protection in `iobuf_append()` and `deliver_websocket_frame()`
 - Fixed NetBSD build
 - Enabled `NS_ENABLE_IPV6` build for Visual Studio 2008+
 - Enhanced comma detection in `parse_header()`
 - Fixed unchanged memory accesses on ARM
 - Added ability to use custom memory allocator through NS_MALLOC, NS_FREE, NS_REALLOC
 Changes in Mongoose binary:
 - Added `-start_browser` option to disable automatic browser launch
 - Added experimental SSL support. To listen on HTTPS port, use `ssl://PORT:SSL_CERT` format. For example, to listen on HTTP port 8080 and HTTPS port 8043, use `-listening_port 8080,ssl://8043:ssl_cert.pem`
 ## Release 5.5, October 28 2014
 Changes in Libmongoose library:
 - Added new API function: `mg_forward()` for proxying functionality
 - Added new API function: `mg_send_file_data()` for sending file data
 - Added new utility API functions: `mg_mmap() and mg_munmap()`
 - Changed the way SSL settings are handled: removed `ssl_certificate` and
  `ssl_ca_certificate` options, and instead made `listening_port` accept
  `ssl://PORT:SSL_CERT:CA_CERT` notation
 - Added ability to listen on multiple ports, see `listening_port` documentation
 - Added `enable_proxy` option
 - Added [cookie_authentication](https://github.com/cesanta/mongoose/tree/master/examples/cookie_authentication) example
 - Added [websocket\_ssl\_proxy](https://github.com/cesanta/mongoose/tree/master/examples/websocket_ssl_proxy) example
 - Added [http_client](https://github.com/cesanta/mongoose/tree/master/examples/http_client) example
 - Increased default 'idle connection' timeout from 30 to 300 seconds
 - Fixed MinGW build
 - Refactored all examples, put each in it's own directory with dedicated build
 - Many smaller bugfixed, including SSL, CGI, API, proxy, etc
 Changes in pre-compiled binaries:
 - Support for multiple listening ports
 - Fixed CGI handling for scripts that specify interpreter in the hashbang line
 ## Release 5.4, July 28 2014
 Changes in Libmongoose library:
 - Added `hexdump_file` option for low-level request/reply debugging
 - Added `mg_template()` API function for generating HTML pages from
    templates with expansions
 - Fixed `struct mg_connection::local_ip` handling, `mg_set_option()`
    behavior with NULL values
 - Added `mg_send_file()` call to send arbitrary file to the client
 - Added `mg_terminate_ssl()` for SSL termination functionality
 - Added HTTP proxy support, `enable_proxy` config option
 - Added `mg_next()` for iterating over existing active connections
 - Added client-side SSL auth, `ssl_ca_certificate` option
 - Added `mg_wakeup_server_ex()` for pushing messages to existing connections
 - Added `MG_WS_HANDSHAKE` and `MG_WS_CONNECT` events that are sent on
     Websocket handshake is connection establishment, respectively
 - Removed server-side Lua support
 - Filesystem access, reading from socket/SSL performance improvements
 - DAV PROPFIND memory leak fixed
 - Added `big_upload.c` and enhanced `upload.c` example
 - Added `proxy.c` example that demonstrates proxy functionality and SSE pushes
 - Added `websocket2.c` example that shows simple web chat implementation
    over websockets
 - Various minor fixes
 Changes in pre-compiled binaries:
 - Created HTML administration console
 - When server is started, browser is started automatically
 - Fixed directory listing bug when directory contains `#` character
 - Removed built-in Lua Server Pages in the binary, and instead
  added Mongoose + Lua developer bundle which has Lua Server Pages support.
  That also solves external Lua modules loading problem.
 ## Release 5.3, March 10 2014
 Changes in Libmongoose library:
   * Moved to the evented API. Updated API documentation is at
       http://cesanta.com/docs/Embed.shtml
       http://cesanta.com/docs/API.shtml
   *  Added `MG_LUA` event for exporting custom variables to the Lua environment
   *  Added virtual hosts capability, see `url_rewrites` option description at
       http://cesanta.com/docs/Options.shtml
   *  Added mjpg serving example
   *  Cleaned up and documented HTTP client API, with unit tests
   *  Added `mg_wakeup_server()` to awaken `mg_poll_server()`
      from another thread
   *  Moved Mongoose IO core to [https://github.com/cesanta/net_skeleton](Net Skeleton)
   *  Added connection hexdump functionality for developers
   *  Bug fixes
 Changes in pre-compiled binaries:
   *  New awesome Mongoose logos by our designer Katrin - thanks Katrin!
        Check them out at http://cesanta.com/products.shtml
   *  Added Lua Server Pages support to the free version, quick intro is at
        http://cesanta.com/docs/Lua.shtml
   *  Added quick "Set shared directory" menu item to set `document_root`
   *  Added SSI support to the Pro version
   *  Removed SSL support from the Pro version
 ## Release 5.2, Feb 1 2014
   *  Windows binary made fully UNICODE aware. In previous versions,
      the presence of non-ASCII chars in document root, CGI script name,
      or directory name might have broken Mongoose as stand-alone
      or as Windows service. Now Mongoose works with non-ASCII paths properly.
      Internally, Mongoose uses UTF8 encoding. When making WinAPI calls,
      mongoose converts UTF8 strings to wide chars and calls UNICODE API.
   *  Enhanced authorization API by providing `mg_set_auth_handler()` and
      `mg_authorize_digest()`
   *  Removed `mg_add_uri_handler()`, added `mg_set_request_handler()`.
      There is only oneURI handler that handles all requests, just like in 4.x.
      The reason for this change is to provide an ability to catch all URIs,
      and at the same time signal Mongoose to continue handling specific URIs.
  *  Added `mg_parse_multipart()` API for file uploads.
      Note that the restriction on uploading huge files still exists,
      and will be eliminated in the next release.
  *  Allowing mongoose to bind to port 0, in which case it'll bind to any
      random unused port.
  *  Moved `idle_timeout_ms` run-time option to compile-time flag
  *  Added asynchronous HTTP client, not documented yet. Documentation and
      examples are coming in the next couple of weeks. Async Websocket client
      is scheduled for the next release. See usage examples at `unit_test.c`
  *  Windows and MacOS pre-built binaries are now split to free and paid ones,
    paid binaries include CGI, SSL, Lua, Sqlite, support and updates.
    Linux pre-built binary includes all functionality and is free, and will
    continue to be free.  Source code for Windows and MacOS GUI is closed.
    Disclaimer: source code for the command line stand-alone server,
    as well as Mongoose library itself, will never be closed.
  *  Multiple bug fixes and minor enhancements
 ## Release 5.1, Jan 10 2014
   *  CGI-related bugs where fixed, primarily for Windows platform
   *  Bugs on Windows related to UNICODE support were fixed
   *  Added a feature to support "error pages" through redirect.
      Done using `-url_redirects` option, details are on
      http://cesanta.com/docs/Options.shtml
 ## Release 5.0, Jan 6 2014
   *  Internal core has been changed from blocking, thread-per-connection to
      non-blocking, asynchronous, one thread for all.
   *  API modification for server creation and response creation. That allowed
     keep-alive support for dynamic requests, boosting the embedded performance
     to 100+ thousands requests per second on a single core
     (as measured on my development MacBook laptop)
   * Unified handling of POST requests and Websocket requests by putting a
    payload into `conn->content`, `conn->content_len` attributes.
    That simplified user code and eliminated the need of `mg_read()`,
    since mongoose buffers all data prior to calling the callback
   * keep-alive support is the default
   * Dropped SSI support and throttling support
   *  Several configuraition parameters are gone:
    *  `cgi_environment` (replaced with MONGOOSE_CGI),
    *  `protect_uri` (not useful)
    *  `ssi_pattern` (SSI support is gone)
    *  `throttle` (throttling support is gone)
    *  `error_log_file` (not used)
    *   `enable_keep_alive` (enabled by default)
    *   `listening_ports` (renamed to listening_port)
    *   `num_threads` (core has changed to single thread)
    *   `put_delete_auth_file` (renamed to dav_auth_file)
    *   `authentication_domain` (renamed to auth_domain)
   * Due to the async, non-blocking nature of the core, few restrictions
      are now in place:
    * user callbacks must not block
    * POST and Websocket data are now buffered, and cannot be huge
   * mongoose is now capable on listening on only one port
 ## Release 4.1, Oct 2013
 ## Release 4.0, Oct 2013
 ## Release 3.8, Sep 2013
 ## Release 3.7, Feb 2 2013
  *  Added "redirect to SSL port" functionality, e.g. if you specify
      `-listening_ports 8080r,8043s`
      then all requests to HTTP port 8080 will be redirected to HTTPS port 8043
  *  Added `mg_download()` API, an HTTP client interface!
  *  Lua server pages now must output HTTP headers -- full control for Lua
  *  Added pre-built binary for MacOS, with initial GUI support
  *  API change: got rid of events, moved to struct `mg_callbacks`
  *  Bugfixes, thanks to contributors
 ## Release 3.7, Jan 18 2013
  *  Fixed source code archive (main.c was missing)
  *  Extended Windows GUI functionality:
   * Added "Start browser" systray popup menu item
   *  Enhanced configuration editor
  *  Renamed config options:
   * `put_delete_passwords_file` -> `put_delete_auth_file`
   * `global_passwords_file` -> `global_auth_file`
  *  `select()` changed to `poll()`, to avoid big file descriptor
  `FD_SET` problem on UNIX
  *  Couple of bugfixes, thanks to contributors
 Eearlier release notes could be found by searching
 [Mongoose mailing list](https://groups.google.com/forum/#!forum/mongoose-users)
@@ -1,70 +0,0 @@
 # Mongoose SSL guide
 SSL is a protocol that makes web communication secure. To enable SSL
 in mongoose, 2 steps are required:
   1. Create valid SSL certificate file
   2. Append SSL certificate file path to the `listening_ports` option
 Below is the `mongoose.conf` file snippet for typical SSL setup:
    document_root     www_root         # Serve files in www_root directory
    listening_ports   80,443:cert.pem  # Listen on ports 80 and 443
 ## How to create SSL certificate file
 SSL certificate file is a text file that must contain at least two
 sections:
   1. A private key
   2. A certificate
 Both sections should be chunks of text in PEM format. When PEM file is
 opened in a text editor, it looks like this:
    -----BEGIN RSA PRIVATE KEY-----
    MIIEogIBAAKCAQEAwONaLOP7EdegqjRuQKSDXzvHmFMZfBufjhELhNjo5KsL4ieH
    hYN0Zii2yTb63jGxKY6gH1R/r9dL8kXaJmcZrfSa3AgywnteJWg=
    -----END RSA PRIVATE KEY-----
    -----BEGIN CERTIFICATE-----
    MIIDBjCCAe4CCQCX05m0b053QzANBgkqhkiG9w0BAQQFADBFMQswCQYDVQQGEwJB
    SEGI4JSxV56lYg==
    -----END CERTIFICATE-----
 Two aforementioned sections are clearly seen. Typically, those section
 are bigger then in the example shown. The text between the `BEGIN` and
 `END` is the text representation of binary data, a private key and a
 certificate. Therefore, in order to create a certificate file,
   * private key must be converted to PEM format
   * certificate must be converted to PEM format
   * those two should be concatenated into a single file
 If the certificate chain in used, a chain file also needs to be
 converted into PEM format and appended to the certificate file.
 ## How SSL works
 SSL is a protocol that can encrypt communication between two parties. If third
 party observes all messages passed by, it would be very
 hard for the third party (though not impossible) to decrypt the communication.
 The idea is based on so-called public key encryption. Communicating parties
 have two keys: a public key and a private key. A public key is advertised
 to everybody, and it is contained in a certificate. A private key is kept
 secret. Security algorithm works in a way that anybody can encrypt
 a message using public key, and only private key can decrypt it.
 This is why web server needs both private key and certificate: private key
 is used to decrypt incoming messages, and certificate is used to tell the
 public key to the other party. When communication starts, parties exchange
 their public keys, and keep private keys to themselves. Man-in-the-middle
 who observes the communication is unable to decrypt the messages cause
 private keys are required for decryption.
 Encryption algorithms are built on top of hard mathematical problem, which
 makes it very expensive for man-in-the-middle to compute private keys.
 For example, RSA algorithm is based on a mathematical problem of factorization.
 It is easy to generate two very large prime numbers `P` and `Q` and make
 a product `P * Q`. But given a product, it is very hard to recover these
 two prime numbers - this is called factorization.
@@ -1,86 +0,0 @@
 # Mongoose User Guide
 Mongoose is small and easy to use web server built on top of
 mongoose library. It is designed with maximum simplicity in mind. For example,
 to share any directory, just drop mongoose executable in that directory,
 double-click it (on UNIX, run it from shell) and launch a browser at
 [http://localhost:8080](http://localhost:8080) Note that 'localhost' should
 be changed to a machine's name if a folder is accessed from other computer.
 On Windows and Mac, Mongoose iconifies itself to the system tray when started.
 Right-click on the icon to pop up a menu, where it is possible to stop
 mongoose, or configure it.
 On UNIX, `mongoose` is a command line utility. Running `mongoose` in
 terminal, optionally followed by configuration parameters
 (`mongoose [OPTIONS]`) or configuration file name
 (`mongoose [config_file_name]`) starts the
 web server:
    $ mongoose -document_root /var/www  # Running mongoose with cmdline options
    $ mongoose /etc/my_config.txt       # Running mongoose with config file
    $ mongoose                          # Running with no parameters. This will
                                        # serve current directory on port 8080
 Mongoose does not detach from terminal. Pressing `Ctrl-C` keys
 stops the server.
 When started, mongoose first searches for the configuration file.
 If configuration file is specified explicitly in the command line, then
 specified configuration file is used.
 Otherwise, mongoose would search for file `mongoose.conf` in the same directory
 where binary is located, and use it. Configuration file can be absent.
 Configuration file is a sequence of lines, each line containing
 command line argument name and it's value. Empty lines and lines beginning
 with `#` are ignored. Here is the example of `mongoose.conf` file:
    # This is a comment
    document_root C:\www
    listening_port 80
    ssl_certificate C:\mongoose\ssl_cert.pem
 Command line arguments are highest priority and can override
 configuration file settings. For example, if `mongoose.conf` has line
 `document_root /var/www`, and mongoose has been started as
 `mongoose -document_root /etc`, then `/etc` directory will be used as
 document root.
 Note that configuration options on the command line must start with `-`,
 and their names are the same as in the config file. Exampli gratia,
 the following two setups are equivalent:
    $ mongoose -listening_port 1234 -document_root /var/www
    $ cat > mongoose.conf
    listening_ports 1234
    document_root /var/www
    ^D
    $ mongoose
 Mongoose can also be used to modify `.htpasswd` passwords file:
    $ mongoose -A .htpasswd mydomain.com user_name user_password
 Unlike other web servers, mongoose does not require CGI scripts be located in
 a special directory. CGI scripts can be anywhere. CGI (and SSI) files are
 recognized by the file name pattern. Mongoose uses shell-like glob
 patterns. Pattern match starts at the beginning of the string, so essentially
 patterns are prefix patterns. Syntax is as follows:
     **         Matches everything
     *          Matches everything but slash character, '/'
     ?          Matches any character
     $          Matches the end of the string
     |          Matches if pattern on the left side or the right side matches.
 All other characters in the pattern match themselves. Examples:
    # Pattern   Meaning
    **.cgi$     Any string that ends with .cgi
    /foo        Any string that begins with /foo
    **a$|**b$   Any string that ends with a or b
 To restrict CGI files only to `/cgi-bin/` directory, use this setting:
    $ mongoose -cgi_pattern /cgi-bin/*.cgi # Emulate /cgi-bin/ restriction
@@ -1 +0,0 @@
 *.exe
@@ -1,20 +0,0 @@
 # Copyright (c) 2014 Cesanta Software
 # All rights reserved
 SUBDIRS = $(sort $(filter-out csharp/, $(dir $(wildcard */))))
 X = $(SUBDIRS)
 ifdef WINDIR
    # appending the Winsock2 library at the end of the compiler
 	# invocation
    CFLAGS_EXTRA += -lws2_32
 endif
 .PHONY: $(SUBDIRS)
 all: $(SUBDIRS)
 $(SUBDIRS):
 	@$(MAKE) CFLAGS_EXTRA="$(CFLAGS_EXTRA)" -C $@
 clean:
 	for d in $(SUBDIRS) ; do $(MAKE) -C $$d clean ; done
@@ -1,12 +0,0 @@
 # Copyright (c) 2014 Cesanta Software
 # All rights reserved
 PROG = big_upload
 CFLAGS = -W -Wall -pthread -I../.. -g -O0 $(CFLAGS_EXTRA)
 SOURCES = $(PROG).c ../../mongoose.c
 $(PROG): $(SOURCES)
 	$(CC) -o $(PROG) $(SOURCES) $(CFLAGS)
 clean:
 	rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib
@@ -1,84 +0,0 @@
 #include <stdio.h>
 #include <string.h>
 #include <stdlib.h>
 #include "mongoose.h"
 static int handle_request(struct mg_connection *conn) {
  if (strcmp(conn->uri, "/upload") == 0) {
    FILE *fp = (FILE *) conn->connection_param;
    if (fp != NULL) {
      fwrite(conn->content, 1, conn->content_len, fp); // Write last bits
      mg_printf(conn, "HTTP/1.1 200 OK\r\n"
                "Content-Type: text/plain\r\n"
                "Connection: close\r\n\r\n"
                "Written %ld of POST data to a temp file:\n\n",
                (long) ftell(fp));
      // Temp file will be destroyed after fclose(), do something with the
      // data here -- for example, parse it and extract uploaded files.
      // As an example, we just echo the whole POST buffer back to the client.
      rewind(fp);
      mg_send_file_data(conn, fileno(fp));
      return MG_MORE;  // Tell Mongoose reply is not completed yet
    } else {
      mg_printf_data(conn, "%s", "Had no data to write...");
      return MG_TRUE; // Tell Mongoose we're done with this request
    }
  } else {
    mg_printf_data(conn, "%s",
                   "<html><body>Upload example."
                   "<form method=\"POST\" action=\"/upload\" "
                   "  enctype=\"multipart/form-data\">"
                   "<input type=\"file\" name=\"file\" /> <br/>"
                   "<input type=\"submit\" value=\"Upload\" />"
                   "</form></body></html>");
    return MG_TRUE;   // Tell mongoose to close this connection
  }
 }
 // Mongoose sends MG_RECV for every received POST chunk.
 // When last POST chunk is received, Mongoose sends MG_REQUEST, then MG_CLOSE.
 static int handle_recv(struct mg_connection *conn) {
  FILE *fp = (FILE *) conn->connection_param;
  // Open temporary file where we going to write data
  if (fp == NULL && ((conn->connection_param = fp = tmpfile())) == NULL) {
    return -1;  // Close connection on error
  }
  // Return number of bytes written to a temporary file: that is how many
  // bytes we want to discard from the receive buffer
  return fwrite(conn->content, 1, conn->content_len, fp);
 }
 // Make sure we free all allocated resources
 static int handle_close(struct mg_connection *conn) {
  if (conn->connection_param != NULL) {
    fclose((FILE *) conn->connection_param);
    conn->connection_param = NULL;
  }
  return MG_TRUE;
 }
 static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
  switch (ev) {
    case MG_AUTH:     return MG_TRUE;
    case MG_REQUEST:  return handle_request(conn);
    case MG_RECV:     return handle_recv(conn);
    case MG_CLOSE:    return handle_close(conn);
    default:          return MG_FALSE;
  }
 }
 int main(void) {
  struct mg_server *server = mg_create_server(NULL, ev_handler);
  mg_set_option(server, "listening_port", "8080");
  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
  for (;;) {
    mg_poll_server(server, 1000);
  }
  mg_destroy_server(&server);
  return 0;
 }
@@ -0,0 +1,11 @@
 PROG ?= example
 CFLAGS ?= -DMG_IO_SIZE=8192 -DMG_ENABLE_LINES
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG) $(ARGS)
 $(PROG): main.c
 	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb
@@ -0,0 +1,55 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 //
 // Example captive DNS server (captive portal).
 //    1. Run `make`. This builds and starts a server on port 5533
 //    2. Run `dig -t A www.google.com -4 @localhost -p 5533`
 #include "mongoose.h"
 static const char *s_listen_url = "udp://0.0.0.0:5533";
 // DNS answer section. We response with IP 1.2.3.4 - you can change it
 //  in the last 4 bytes of this array
 uint8_t answer[] = {
    0xc0, 0x0c,          // Point to the name in the DNS question
    0,    1,             // 2 bytes - record type, A
    0,    1,             // 2 bytes - address class, INET
    0,    0,    0, 120,  // 4 bytes - TTL
    0,    4,             // 2 bytes - address length
    1,    2,    3, 4     // 4 bytes - IP address
 };
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_READ) {
    struct mg_dns_rr rr;  // Parse first question, offset 12 is header size
    size_t n = mg_dns_parse_rr(c->recv.buf, c->recv.len, 12, true, &rr);
    if (n > 0) {
      char buf[12 + n + sizeof(answer)];
      struct mg_dns_header *h = (struct mg_dns_header *) buf;
      memset(buf, 0, sizeof(buf));  // Clear the whole datagram
      h->txnid = ((struct mg_dns_header *) c->recv.buf)->txnid;  // Copy tnxid
      h->num_questions = mg_htons(1);  // We use only the 1st question
      h->num_answers = mg_htons(1);    // And only one answer
      h->flags = mg_htons(0x8400);     // Authoritative response
      memcpy(buf + sizeof(*h), c->recv.buf + sizeof(*h), n);  // Copy question
      memcpy(buf + sizeof(*h) + n, answer, sizeof(answer));   // And answer
      mg_send(c, buf, sizeof(buf));                           // And send it!
    }
    mg_iobuf_delete(&c->recv, c->recv.len);
  }
  (void) fn_data;
  (void) ev_data;
 }
 int main(void) {
  struct mg_mgr mgr;
  mg_log_set("3");                          // Set log level
  mg_mgr_init(&mgr);                        // Initialise event manager
  mg_listen(&mgr, s_listen_url, fn, NULL);  // Start DNS server
  for (;;) mg_mgr_poll(&mgr, 1000);         // Event loop
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1,10 @@
 PROG ?= example
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG)
 $(PROG):
 	$(CC) ../../mongoose.c -I../.. $(CFLAGS) $(EXTRA) -o $(PROG) main.c mjson.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt
@@ -0,0 +1,34 @@
 # A complete device dashboard
 This example is a demonstration of how Mongoose Library could be integrated
 into an embedded device and provide a complete device dashbord with the
 following features:
 - Multiple logins with different permissions (admin and user)
 - Login screen for non-authenticated connections
 - A [preact](https://preactjs.com/)-based dashboard with multiple pages
 - Internal variables
 - A form that changes those variables
 - All changes are propagates to all connected clients
 - Live log stream
 - Live video stream
 In essense, this example is a combination of several other examples
 pulled together (multiple-logins, dashboard, live-log, video-stream).
 # Screenshots
 This is a login screen that prompts for user/password
 ![](screenshots/login.png)
 # Main dashboard
 A main dashboard page shows internal data, live video stream, and a form
 ![](screenshots/dashboard.png)
 A live log page shows live log stream coming from device
 ![](screenshots/logs.png)
@@ -0,0 +1,204 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "mjson.h"
 #include "mongoose.h"
 // Authenticated user.
 // A user can be authenticated by:
 //   - a name:pass pair
 //   - a token
 // When a user is shown a login screen, she enters a user:pass. If successful,
 // a server returns user info which includes token. From that point on,
 // client can use token for authentication. Tokens could be refreshed/changed
 // on a server side, forcing clients to re-login.
 struct user {
  const char *name, *pass, *token;
 };
 // This is a configuration structure we're going to show on a dashboard
 static struct config {
  int value1;
  char *value2;
 } s_config = {123, NULL};
 // Stringifies the config. A caller must free() it.
 static char *stringify_config(struct config *cfg) {
  char *s = NULL;
  mjson_printf(mjson_print_dynamic_buf, &s, "{%Q:%d,%Q:%Q}", "value1",
               cfg->value1, "value2", cfg->value2);
  return s;
 }
 // Update config structure. Return true if changed, false otherwise
 static bool update_config(struct mg_http_message *hm, struct config *cfg) {
  bool changed = false;
  char buf[256];
  double dv;
  if (mjson_get_number(hm->body.ptr, hm->body.len, "$.value1", &dv)) {
    s_config.value1 = dv;
    changed = true;
  }
  if (mjson_get_string(hm->body.ptr, hm->body.len, "$.value2", buf,
                       sizeof(buf)) > 0) {
    free(s_config.value2);
    s_config.value2 = strdup(buf);
    changed = true;
  }
  return changed;
 }
 // Parse HTTP requests, return authenticated user or NULL
 static struct user *getuser(struct mg_http_message *hm) {
  // In production, make passwords strong and tokens randomly generated
  // In this example, user list is kept in RAM. In production, it can
  // be backed by file, database, or some other method.
  static struct user users[] = {
      {"admin", "admin", "admin_token"},
      {"user1", "pass1", "user1_token"},
      {"user2", "pass2", "user2_token"},
      {NULL, NULL, NULL},
  };
  char user[256], pass[256];
  struct user *u;
  mg_http_creds(hm, user, sizeof(user), pass, sizeof(pass));
  if (user[0] != '\0' && pass[0] != '\0') {
    // Both user and password is set, search by user/password
    for (u = users; u->name != NULL; u++)
      if (strcmp(user, u->name) == 0 && strcmp(pass, u->pass) == 0) return u;
  } else if (user[0] == '\0') {
    // Only password is set, search by token
    for (u = users; u->name != NULL; u++)
      if (strcmp(pass, u->token) == 0) return u;
  }
  return NULL;
 }
 // Notify all config watchers about the config change
 static void notify_config_change(struct mg_mgr *mgr) {
  struct mg_connection *c;
  char *s = stringify_config(&s_config);
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] == 'W') mg_http_printf_chunk(c, "%s\n", s);
  }
  free(s);
 }
 // HTTP request handler function
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    struct user *u = getuser(hm);
    // LOG(LL_INFO, ("%p [%.*s] auth %s", c->fd, (int) hm->uri.len, hm->uri.ptr,
    // u ? u->name : "NULL"));
    if (u == NULL && mg_http_match_uri(hm, "/api/#")) {
      // All URIs starting with /api/ must be authenticated
      mg_printf(c, "%s", "HTTP/1.1 403 Denied\r\nContent-Length: 0\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/config/get")) {
      char *s = stringify_config(&s_config);
      mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: %d\r\n\r\n%s\n",
                (int) strlen(s) + 1, s);
      free(s);
    } else if (mg_http_match_uri(hm, "/api/config/set")) {
      // Admins only
      if (strcmp(u->name, "admin") == 0) {
        if (update_config(hm, &s_config)) notify_config_change(fn_data);
        mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
      } else {
        mg_printf(c, "%s", "HTTP/1.1 403 Denied\r\nContent-Length: 0\r\n\r\n");
      }
    } else if (mg_http_match_uri(hm, "/api/config/watch")) {
      c->label[0] = 'W';  // Mark ourselves as a config watcher
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/video1")) {
      c->label[0] = 'S';  // Mark that connection as live streamer
      mg_printf(
          c, "%s",
          "HTTP/1.0 200 OK\r\n"
          "Cache-Control: no-cache\r\n"
          "Pragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
          "Content-Type: multipart/x-mixed-replace; boundary=--foo\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/log/static")) {
      mg_http_serve_file(c, hm, "log.txt", "text/plain", "");
    } else if (mg_http_match_uri(hm, "/api/log/live")) {
      c->label[0] = 'L';  // Mark that connection as live log listener
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/login")) {
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
      mg_http_printf_chunk(c, "{\"user\":\"%s\",\"token\":\"%s\"}\n", u->name,
                           u->token);
      mg_http_printf_chunk(c, "");
    } else {
      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
      mg_http_serve_dir(c, ev_data, &opts);
    }
  }
 }
 // The image stream is simulated by sending MJPEG frames specified by the
 // "files" array of file names.
 static void broadcast_mjpeg_frame(struct mg_mgr *mgr) {
  const char *files[] = {"images/1.jpg", "images/2.jpg", "images/3.jpg",
                         "images/4.jpg", "images/5.jpg", "images/6.jpg"};
  size_t nfiles = sizeof(files) / sizeof(files[0]);
  static size_t i;
  const char *path = files[i++ % nfiles];
  size_t size = mg_file_size(path);
  char *data = mg_file_read(path);  // Read next file
  struct mg_connection *c;
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] != 'S') continue;         // Skip non-stream connections
    if (data == NULL || size == 0) continue;  // Skip on file read error
    mg_printf(c,
              "--foo\r\nContent-Type: image/jpeg\r\n"
              "Content-Length: %lu\r\n\r\n",
              (unsigned long) size);
    mg_send(c, data, size);
    mg_send(c, "\r\n", 2);
  }
  free(data);
 }
 static void mjpeg_cb(void *arg) {
  broadcast_mjpeg_frame(arg);
 }
 static void log_message(const char *filename, const char *message) {
  FILE *fp = fopen(filename, "a");
  if (fp != NULL) {
    fprintf(fp, "%s", message);
    fclose(fp);
  }
 }
 static void broadcast_message(struct mg_mgr *mgr, const char *message) {
  struct mg_connection *c;
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] == 'L') mg_http_printf_chunk(c, "%s", message);
  }
 }
 // Timer function - called periodically.
 // Prepare log message. Save it to a file, and broadcast.
 static void log_cb(void *arg) {
  char buf[64];
  snprintf(buf, sizeof(buf), "Time is: %lu\n", (unsigned long) time(NULL));
  log_message("log.txt", buf);
  broadcast_message(arg, buf);
 }
 int main(void) {
  struct mg_mgr mgr;
  struct mg_timer t1, t2;
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, "http://localhost:8000", cb, &mgr);
  mg_timer_init(&t1, 500, MG_TIMER_REPEAT, mjpeg_cb, &mgr);
  mg_timer_init(&t2, 1000, MG_TIMER_REPEAT, log_cb, &mgr);
  for (;;) mg_mgr_poll(&mgr, 50);
  mg_timer_free(&t1);
  mg_timer_free(&t2);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1,981 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #include "mjson.h"
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
 #else
 #define va_copy(x, y) (x) = (y)
 #define snprintf _snprintf
 #define alloca _alloca
 #endif
 static int mjson_esc(int c, int esc) {
  const char *p, *esc1 = "\b\f\n\r\t\\\"", *esc2 = "bfnrt\\\"";
  for (p = esc ? esc1 : esc2; *p != '\0'; p++) {
    if (*p == c) return esc ? esc2[p - esc1] : esc1[p - esc2];
  }
  return 0;
 }
 static int mjson_pass_string(const char *s, int len) {
  int i;
  for (i = 0; i < len; i++) {
    if (s[i] == '\\' && i + 1 < len && mjson_esc(s[i + 1], 1)) {
      i++;
    } else if (s[i] == '\0') {
      return MJSON_ERROR_INVALID_INPUT;
    } else if (s[i] == '"') {
      return i;
    }
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud) {
  enum { S_VALUE, S_KEY, S_COLON, S_COMMA_OR_EOO } expecting = S_VALUE;
  unsigned char nesting[MJSON_MAX_DEPTH];
  int i, depth = 0;
 #define MJSONCALL(ev) \
  if (cb != NULL && cb(ev, s, start, i - start + 1, ud)) return i + 1;
 // In the ascii table, the distance between `[` and `]` is 2.
 // Ditto for `{` and `}`. Hence +2 in the code below.
 #define MJSONEOO()                                                     \
  do {                                                                 \
    if (c != nesting[depth - 1] + 2) return MJSON_ERROR_INVALID_INPUT; \
    depth--;                                                           \
    if (depth == 0) {                                                  \
      MJSONCALL(tok);                                                  \
      return i + 1;                                                    \
    }                                                                  \
  } while (0)
  for (i = 0; i < len; i++) {
    int start = i;
    unsigned char c = ((unsigned char *) s)[i];
    int tok = c;
    if (c == ' ' || c == '\t' || c == '\n' || c == '\r') continue;
    // printf("- %c [%.*s] %d %d\n", c, i, s, depth, expecting);
    switch (expecting) {
      case S_VALUE:
        if (c == '{') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          expecting = S_KEY;
          break;
        } else if (c == '[') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          break;
        } else if (c == ']' && depth > 0) {  // Empty array
          MJSONEOO();
        } else if (c == 't' && i + 3 < len && memcmp(&s[i], "true", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_TRUE;
        } else if (c == 'n' && i + 3 < len && memcmp(&s[i], "null", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_NULL;
        } else if (c == 'f' && i + 4 < len && memcmp(&s[i], "false", 5) == 0) {
          i += 4;
          tok = MJSON_TOK_FALSE;
        } else if (c == '-' || ((c >= '0' && c <= '9'))) {
          char *end = NULL;
          strtod(&s[i], &end);
          if (end != NULL) i += end - &s[i] - 1;
          tok = MJSON_TOK_NUMBER;
        } else if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_STRING;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        if (depth == 0) {
          MJSONCALL(tok);
          return i + 1;
        }
        expecting = S_COMMA_OR_EOO;
        break;
      case S_KEY:
        if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_KEY;
          expecting = S_COLON;
        } else if (c == '}') {  // Empty object
          MJSONEOO();
          expecting = S_COMMA_OR_EOO;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COLON:
        if (c == ':') {
          expecting = S_VALUE;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COMMA_OR_EOO:
        if (depth <= 0) return MJSON_ERROR_INVALID_INPUT;
        if (c == ',') {
          expecting = (nesting[depth - 1] == '{') ? S_KEY : S_VALUE;
        } else if (c == ']' || c == '}') {
          MJSONEOO();
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
    }
    MJSONCALL(tok);
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 struct msjon_get_data {
  const char *path;     // Lookup json path
  int pos;              // Current path index
  int d1;               // Current depth of traversal
  int d2;               // Expected depth of traversal
  int i1;               // Index in an array
  int i2;               // Expected index in an array
  int obj;              // If the value is array/object, offset where it starts
  const char **tokptr;  // Destination
  int *toklen;          // Destination length
  int tok;              // Returned token
 };
 static int mjson_plen(const char *s) {
  int i = 0;
  while (s[i] != '\0' && s[i] != '.' && s[i] != '[') i++;
  return i;
 }
 static int mjson_get_cb(int tok, const char *s, int off, int len, void *ud) {
  struct msjon_get_data *data = (struct msjon_get_data *) ud;
  // printf("--> %2x %2d %2d %2d %2d\t'%s'\t'%.*s'\t\t'%.*s'\n", tok, data->d1,
  // data->d2, data->i1, data->i2, data->path + data->pos, off, s, len,
  // s + off);
  if (data->tok != MJSON_TOK_INVALID) return 1;  // Found
  if (tok == '{') {
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == '[') {
    if (data->d1 == data->d2 && data->path[data->pos] == '[') {
      data->i1 = 0;
      data->i2 = (int) strtod(&data->path[data->pos + 1], NULL);
      if (data->i1 == data->i2) {
        data->d2++;
        data->pos += 3;
      }
    }
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == ',') {
    if (data->d1 == data->d2 + 1) {
      data->i1++;
      if (data->i1 == data->i2) {
        while (data->path[data->pos] != ']') data->pos++;
        data->pos++;
        data->d2++;
      }
    }
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2 + 1 &&
             data->path[data->pos] == '.' && s[off] == '"' &&
             s[off + len - 1] == '"' &&
             mjson_plen(&data->path[data->pos + 1]) == len - 2 &&
             !memcmp(s + off + 1, &data->path[data->pos + 1], len - 2)) {
    data->d2++;
    data->pos += len - 1;
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2) {
    return 1;  // Exhausted path, not found
  } else if (tok == '}' || tok == ']') {
    data->d1--;
    // data->d2--;
    if (!data->path[data->pos] && data->d1 == data->d2 && data->obj != -1) {
      data->tok = tok - 2;
      if (data->tokptr) *data->tokptr = s + data->obj;
      if (data->toklen) *data->toklen = off - data->obj + 1;
      return 1;
    }
  } else if (MJSON_TOK_IS_VALUE(tok)) {
    // printf("TOK --> %d\n", tok);
    if (data->d1 == data->d2 && !data->path[data->pos]) {
      data->tok = tok;
      if (data->tokptr) *data->tokptr = s + off;
      if (data->toklen) *data->toklen = len;
      return 1;
    }
  }
  return 0;
 }
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen) {
  struct msjon_get_data data = {jp, 1,  0,      0,      0,
                                0,  -1, tokptr, toklen, MJSON_TOK_INVALID};
  if (jp[0] != '$') return MJSON_TOK_INVALID;
  if (mjson(s, len, mjson_get_cb, &data) < 0) return MJSON_TOK_INVALID;
  return (enum mjson_tok) data.tok;
 }
 int mjson_get_number(const char *s, int len, const char *path, double *v) {
  const char *p;
  int tok, n;
  if ((tok = mjson_find(s, len, path, &p, &n)) == MJSON_TOK_NUMBER) {
    if (v != NULL) *v = strtod(p, NULL);
  }
  return tok == MJSON_TOK_NUMBER ? 1 : 0;
 }
 int mjson_get_bool(const char *s, int len, const char *path, int *v) {
  int tok = mjson_find(s, len, path, NULL, NULL);
  if (tok == MJSON_TOK_TRUE && v != NULL) *v = 1;
  if (tok == MJSON_TOK_FALSE && v != NULL) *v = 0;
  return tok == MJSON_TOK_TRUE || tok == MJSON_TOK_FALSE ? 1 : 0;
 }
 static int mjson_unescape(const char *s, int len, char *to, int n) {
  int i, j;
  for (i = 0, j = 0; i < len && j < n; i++, j++) {
    if (s[i] == '\\' && i + 1 < len) {
      int c = mjson_esc(s[i + 1], 0);
      if (c == 0) return -1;
      to[j] = c;
      i++;
    } else {
      to[j] = s[i];
    }
  }
  if (j >= n) return -1;
  if (n > 0) to[j] = '\0';
  return j;
 }
 int mjson_get_string(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return -1;
  return mjson_unescape(p + 1, sz - 2, to, n);
 }
 int mjson_get_hex(const char *s, int len, const char *x, char *to, int n) {
  const char *p;
  int i, j, sz;
  if (mjson_find(s, len, x, &p, &sz) != MJSON_TOK_STRING) return -1;
  for (i = j = 0; i < sz - 3 && j < n; i += 2, j++) {
 #define HEXTOI(x) (x >= '0' && x <= '9' ? x - '0' : x - 'W')
    unsigned char a = *(const unsigned char *) (p + i + 1);
    unsigned char b = *(const unsigned char *) (p + i + 2);
    ((unsigned char *) to)[j] = (HEXTOI(a) << 4) | HEXTOI(b);
  }
  if (j < n) to[j] = '\0';
  return j;
 }
 #if MJSON_ENABLE_BASE64
 static int mjson_base64rev(int c) {
  if (c >= 'A' && c <= 'Z') {
    return c - 'A';
  } else if (c >= 'a' && c <= 'z') {
    return c + 26 - 'a';
  } else if (c >= '0' && c <= '9') {
    return c + 52 - '0';
  } else if (c == '+') {
    return 62;
  } else if (c == '/') {
    return 63;
  } else {
    return 64;
  }
 }
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen) {
  const char *end = src + n;
  int len = 0;
  while (src + 3 < end && len < dlen) {
    int a = mjson_base64rev(src[0]), b = mjson_base64rev(src[1]),
        c = mjson_base64rev(src[2]), d = mjson_base64rev(src[3]);
    dst[len++] = (a << 2) | (b >> 4);
    if (src[2] != '=' && len < dlen) {
      dst[len++] = (b << 4) | (c >> 2);
      if (src[3] != '=' && len < dlen) {
        dst[len++] = (c << 6) | d;
      }
    }
    src += 4;
  }
  if (len < dlen) dst[len] = '\0';
  return len;
 }
 int mjson_get_base64(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return 0;
  return mjson_base64_dec(p + 1, sz - 2, to, n);
 }
 #endif  // MJSON_ENABLE_BASE64
 #if MJSON_ENABLE_NEXT
 struct nextdata {
  int off, len, depth, t, vo, arrayindex;
  int *koff, *klen, *voff, *vlen, *vtype;
 };
 static int next_cb(int tok, const char *s, int off, int len, void *ud) {
  struct nextdata *d = (struct nextdata *) ud;
  // int i;
  switch (tok) {
    case '{':
    case '[':
      if (d->depth == 0 && tok == '[') d->arrayindex = 0;
      if (d->depth == 1 && off > d->off) {
        d->vo = off;
        d->t = tok == '{' ? MJSON_TOK_OBJECT : MJSON_TOK_ARRAY;
        if (d->voff) *d->voff = off;
        if (d->vtype) *d->vtype = d->t;
      }
      d->depth++;
      break;
    case '}':
    case ']':
      d->depth--;
      if (d->depth == 1 && d->vo) {
        d->len = off + len;
        if (d->vlen) *d->vlen = d->len - d->vo;
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->depth == 1 && d->arrayindex >= 0) d->arrayindex++;
      break;
    case ',':
    case ':':
      break;
    case MJSON_TOK_KEY:
      if (d->depth == 1 && d->off < off) {
        if (d->koff) *d->koff = off;  // And report back to the user
        if (d->klen) *d->klen = len;  // If we have to
      }
      break;
    default:
      if (d->depth != 1) break;
      // If we're iterating over the array
      if (off > d->off) {
        d->len = off + len;
        if (d->vlen) *d->vlen = len;    // value length
        if (d->voff) *d->voff = off;    // value offset
        if (d->vtype) *d->vtype = tok;  // value type
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->arrayindex >= 0) d->arrayindex++;
      break;
  }
  (void) s;
  return 0;
 }
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype) {
  struct nextdata d = {off, 0, 0, 0, 0, -1, koff, klen, voff, vlen, vtype};
  mjson(s, n, next_cb, &d);
  return d.len;
 }
 #endif
 #if MJSON_ENABLE_PRINT
 int mjson_print_fixed_buf(const char *ptr, int len, void *fndata) {
  struct mjson_fixedbuf *fb = (struct mjson_fixedbuf *) fndata;
  int i, left = fb->size - 1 - fb->len;
  if (left < len) len = left;
  for (i = 0; i < len; i++) fb->ptr[fb->len + i] = ptr[i];
  fb->len += len;
  fb->ptr[fb->len] = '\0';
  return len;
 }
 int mjson_print_dynamic_buf(const char *ptr, int len, void *fndata) {
  char *s, *buf = *(char **) fndata;
  int curlen = buf == NULL ? 0 : strlen(buf);
  if ((s = (char *) realloc(buf, curlen + len + 1)) == NULL) {
    return 0;
  } else {
    memcpy(s + curlen, ptr, len);
    s[curlen + len] = '\0';
    *(char **) fndata = s;
    return len;
  }
 }
 int mjson_print_null(const char *ptr, int len, void *userdata) {
  (void) ptr;
  (void) userdata;
  return len;
 }
 int mjson_print_file(const char *ptr, int len, void *userdata) {
  return fwrite(ptr, 1, len, (FILE *) userdata);
 }
 int mjson_print_buf(mjson_print_fn_t fn, void *fndata, const char *buf,
                    int len) {
  return fn(buf, len, fndata);
 }
 int mjson_print_int(mjson_print_fn_t fn, void *fndata, int value,
                    int is_signed) {
  char buf[20];
  int len = snprintf(buf, sizeof(buf), is_signed ? "%d" : "%u", value);
  return fn(buf, len, fndata);
 }
 int mjson_print_long(mjson_print_fn_t fn, void *fndata, long value,
                     int is_signed) {
  char buf[20];
  const char *fmt = (is_signed ? "%ld" : "%lu");
  int len = snprintf(buf, sizeof(buf), fmt, value);
  return fn(buf, len, fndata);
 }
 int mjson_print_dbl(mjson_print_fn_t fn, void *fndata, double d,
                    const char *fmt) {
  char buf[40];
  int n = snprintf(buf, sizeof(buf), fmt, d);
  return fn(buf, n, fndata);
 }
 int mjson_print_str(mjson_print_fn_t fn, void *fndata, const char *s, int len) {
  int i, n = fn("\"", 1, fndata);
  for (i = 0; i < len; i++) {
    char c = mjson_esc(s[i], 1);
    if (c) {
      n += fn("\\", 1, fndata);
      n += fn(&c, 1, fndata);
    } else {
      n += fn(&s[i], 1, fndata);
    }
  }
  return n + fn("\"", 1, fndata);
 }
 #if MJSON_ENABLE_BASE64
 int mjson_print_b64(mjson_print_fn_t fn, void *fndata, const unsigned char *s,
                    int n) {
  const char *t =
      "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  int i, len = fn("\"", 1, fndata);
  for (i = 0; i < n; i += 3) {
    int a = s[i], b = i + 1 < n ? s[i + 1] : 0, c = i + 2 < n ? s[i + 2] : 0;
    char buf[4] = {t[a >> 2], t[(a & 3) << 4 | (b >> 4)], '=', '='};
    if (i + 1 < n) buf[2] = t[(b & 15) << 2 | (c >> 6)];
    if (i + 2 < n) buf[3] = t[c & 63];
    len += fn(buf, sizeof(buf), fndata);
  }
  return len + fn("\"", 1, fndata);
 }
 #endif /* MJSON_ENABLE_BASE64 */
 int mjson_vprintf(mjson_print_fn_t fn, void *fndata, const char *fmt,
                  va_list xap) {
  int i = 0, n = 0;
  va_list ap;
  va_copy(ap, xap);
  while (fmt[i] != '\0') {
    if (fmt[i] == '%') {
      char fc = fmt[++i];
      int is_long = 0;
      if (fc == 'l') {
        is_long = 1;
        fc = fmt[i + 1];
      }
      if (fc == 'Q') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf ? buf : "", buf ? strlen(buf) : 0);
      } else if (strncmp(&fmt[i], ".*Q", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'd' || fc == 'u') {
        int is_signed = (fc == 'd');
        if (is_long) {
          long val = va_arg(ap, long);
          n += mjson_print_long(fn, fndata, val, is_signed);
          i++;
        } else {
          int val = va_arg(ap, int);
          n += mjson_print_int(fn, fndata, val, is_signed);
        }
      } else if (fc == 'B') {
        const char *s = va_arg(ap, int) ? "true" : "false";
        n += mjson_print_buf(fn, fndata, s, strlen(s));
      } else if (fc == 's') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, strlen(buf));
      } else if (strncmp(&fmt[i], ".*s", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'g') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%g");
      } else if (fc == 'f') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%f");
 #if MJSON_ENABLE_BASE64
      } else if (fc == 'V') {
        int len = va_arg(ap, int);
        const char *buf = va_arg(ap, const char *);
        n += mjson_print_b64(fn, fndata, (unsigned char *) buf, len);
 #endif
      } else if (fc == 'H') {
        const char *hex = "0123456789abcdef";
        int i, len = va_arg(ap, int);
        const unsigned char *p = va_arg(ap, const unsigned char *);
        n += fn("\"", 1, fndata);
        for (i = 0; i < len; i++) {
          n += fn(&hex[(p[i] >> 4) & 15], 1, fndata);
          n += fn(&hex[p[i] & 15], 1, fndata);
        }
        n += fn("\"", 1, fndata);
      } else if (fc == 'M') {
        mjson_vprint_fn_t vfn = va_arg(ap, mjson_vprint_fn_t);
        n += vfn(fn, fndata, &ap);
      }
      i++;
    } else {
      n += mjson_print_buf(fn, fndata, &fmt[i++], 1);
    }
  }
  va_end(xap);
  va_end(ap);
  return n;
 }
 int mjson_printf(mjson_print_fn_t fn, void *fndata, const char *fmt, ...) {
  va_list ap;
  int len;
  va_start(ap, fmt);
  len = mjson_vprintf(fn, fndata, fmt, ap);
  va_end(ap);
  return len;
 }
 #endif /* MJSON_ENABLE_PRINT */
 #if MJSON_IMPLEMENT_STRTOD
 static inline int is_digit(int c) {
  return c >= '0' && c <= '9';
 }
 /* NOTE: strtod() implementation by Yasuhiro Matsumoto. */
 double strtod(const char *str, char **end) {
  double d = 0.0;
  int sign = 1, n = 0;
  const char *p = str, *a = str;
  /* decimal part */
  if (*p == '-') {
    sign = -1;
    ++p;
  } else if (*p == '+')
    ++p;
  if (is_digit(*p)) {
    d = (double) (*p++ - '0');
    while (*p && is_digit(*p)) {
      d = d * 10.0 + (double) (*p - '0');
      ++p;
      ++n;
    }
    a = p;
  } else if (*p != '.')
    goto done;
  d *= sign;
  /* fraction part */
  if (*p == '.') {
    double f = 0.0;
    double base = 0.1;
    ++p;
    if (is_digit(*p)) {
      while (*p && is_digit(*p)) {
        f += base * (*p - '0');
        base /= 10.0;
        ++p;
        ++n;
      }
    }
    d += f * sign;
    a = p;
  }
  /* exponential part */
  if ((*p == 'E') || (*p == 'e')) {
    int e = 0;
    ++p;
    sign = 1;
    if (*p == '-') {
      sign = -1;
      ++p;
    } else if (*p == '+')
      ++p;
    if (is_digit(*p)) {
      while (*p == '0') ++p;
      e = (int) (*p++ - '0');
      while (*p && is_digit(*p)) {
        e = e * 10 + (int) (*p - '0');
        ++p;
      }
      e *= sign;
    } else if (!is_digit(*(a - 1))) {
      a = str;
      goto done;
    } else if (*p == 0)
      goto done;
    if (d == 2.2250738585072011 && e == -308) {
      d = 0.0;
      a = p;
      goto done;
    }
    if (d == 2.2250738585072012 && e <= -308) {
      d *= 1.0e-308;
      a = p;
      goto done;
    }
    {
      int i;
      for (i = 0; i < 10; i++) d *= 10;
    }
    a = p;
  } else if (p > str && !is_digit(*(p - 1))) {
    a = str;
    goto done;
  }
 done:
  if (end) *end = (char *) a;
  return d;
 }
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *s, int n, const char *s2, int n2,
                mjson_print_fn_t fn, void *userdata) {
  int koff, klen, voff, vlen, t, t2, k, off = 0, len = 0, comma = 0;
  if (n < 2) return len;
  len += fn("{", 1, userdata);
  while ((off = mjson_next(s, n, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s + koff + 1, klen - 2);
    path[klen] = '\0';
    if ((t2 = mjson_find(s2, n2, path, &val, &k)) != MJSON_TOK_INVALID) {
      if (t2 == MJSON_TOK_NULL) continue;  // null deletes the key
    } else {
      val = s + voff;  // Key is not found in the update. Copy the old value.
    }
    if (comma) len += fn(",", 1, userdata);
    len += fn(s + koff, klen, userdata);
    len += fn(":", 1, userdata);
    if (t == MJSON_TOK_OBJECT && t2 == MJSON_TOK_OBJECT) {
      len += mjson_merge(s + voff, vlen, val, k, fn, userdata);
    } else {
      if (t2 != MJSON_TOK_INVALID) vlen = k;
      len += fn(val, vlen, userdata);
    }
    comma = 1;
  }
  // Add missing keys
  off = 0;
  while ((off = mjson_next(s2, n2, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    if (t == MJSON_TOK_NULL) continue;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s2 + koff + 1, klen - 2);
    path[klen] = '\0';
    if (mjson_find(s, n, path, &val, &vlen) != MJSON_TOK_INVALID) continue;
    if (comma) len += fn(",", 1, userdata);
    len += fn(s2 + koff, klen, userdata);
    len += fn(":", 1, userdata);
    len += fn(s2 + voff, vlen, userdata);
    comma = 1;
  }
  len += fn("}", 1, userdata);
  return len;
 }
 #endif  // MJSON_ENABLE_MERGE
 #if MJSON_ENABLE_PRETTY
 struct prettydata {
  int level;
  int len;
  int prev;
  const char *pad;
  int padlen;
  mjson_print_fn_t fn;
  void *userdata;
 };
 static int pretty_cb(int ev, const char *s, int off, int len, void *ud) {
  struct prettydata *d = (struct prettydata *) ud;
  int i;
  switch (ev) {
    case '{':
    case '[':
      d->level++;
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case '}':
    case ']':
      d->level--;
      if (d->prev != '[' && d->prev != '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case ',':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      break;
    case ':':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) d->len += d->fn(" ", 1, d->userdata);
      break;
    case MJSON_TOK_KEY:
      if (d->prev == '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    default:
      if (d->prev == '[' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
  }
  d->prev = ev;
  return 0;
 }
 int mjson_pretty(const char *s, int n, const char *pad, mjson_print_fn_t fn,
                 void *userdata) {
  struct prettydata d = {0, 0, 0, pad, strlen(pad), fn, userdata};
  if (mjson(s, n, pretty_cb, &d) < 0) return -1;
  return d.len;
 }
 #endif  // MJSON_ENABLE_PRETTY
 #if MJSON_ENABLE_RPC
 struct jsonrpc_ctx jsonrpc_default_context;
 struct jsonrpc_userdata {
  mjson_print_fn_t fn;
  void *fndata;
 };
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2) {
  int i = 0, j = 0, ni = 0, nj = 0;
  while (i < n1 || j < n2) {
    if (i < n1 && j < n2 && (s1[i] == '?' || s2[j] == s1[i])) {
      i++, j++;
    } else if (i < n1 && (s1[i] == '*' || s1[i] == '#')) {
      ni = i, nj = j + 1, i++;
    } else if (nj > 0 && nj <= n2 && (s1[i - 1] == '#' || s2[j] != '/')) {
      i = ni, j = nj;
    } else {
      return 0;
    }
  }
  return 1;
 }
 static int jsonrpc_printer(const char *buf, int len, void *userdata) {
  struct jsonrpc_userdata *u = (struct jsonrpc_userdata *) userdata;
  return u->fn(buf, len, u->fndata);
 }
 void jsonrpc_return_errorv(struct jsonrpc_request *r, int code,
                           const char *message, const char *data_fmt,
                           va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata,
               "{\"id\":%.*s,\"error\":{\"code\":%d,\"message\":%Q", r->id_len,
               r->id, code, message == NULL ? "" : message);
  if (data_fmt != NULL) {
  	mjson_printf(r->fn, r->fndata, ",\"data\":");
    mjson_vprintf(r->fn, r->fndata, data_fmt, ap);
  }
  mjson_printf(r->fn, r->fndata, "}}\n");
 }
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...) {
  va_list ap;
  va_start(ap, data_fmt);
  jsonrpc_return_errorv(r, code, message, data_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_return_successv(struct jsonrpc_request *r, const char *result_fmt,
                             va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata, "{\"id\":%.*s,\"result\":", r->id_len, r->id);
  if (result_fmt != NULL) {
    mjson_vprintf(r->fn, r->fndata, result_fmt, ap);
  } else {
    mjson_printf(r->fn, r->fndata, "%s", "null");
  }
  mjson_printf(r->fn, r->fndata, "}\n");
 }
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...) {
  va_list ap;
  va_start(ap, result_fmt);
  jsonrpc_return_successv(r, result_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata) {
  const char *result = NULL, *error = NULL;
  int result_sz = 0, error_sz = 0;
  struct jsonrpc_method *m = NULL;
  struct jsonrpc_userdata d;
  struct jsonrpc_request r = {req, req_sz,           0,    0,   0, 0, 0,
                              0,   &jsonrpc_printer, NULL, NULL};
  d.fn = fn;
  d.fndata = fndata;
  r.fndata = &d;
  // Is is a response frame?
  mjson_find(req, req_sz, "$.result", &result, &result_sz);
  if (result == NULL) mjson_find(req, req_sz, "$.error", &error, &error_sz);
  if (result_sz > 0 || error_sz > 0) {
    if (ctx->response_cb != NULL) ctx->response_cb(req, req_sz, ctx->userdata);
    return;
  }
  // Method must exist and must be a string
  if (mjson_find(req, req_sz, "$.method", &r.method, &r.method_len) !=
      MJSON_TOK_STRING) {
    mjson_printf(fn, fndata, "{\"error\":{\"code\":-32700,\"message\":%.*Q}}\n",
                 req_sz, req);
    ctx->in_len = 0;
    return;
  }
  // id and params are optional
  mjson_find(req, req_sz, "$.id", &r.id, &r.id_len);
  mjson_find(req, req_sz, "$.params", &r.params, &r.params_len);
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (mjson_globmatch(m->method, m->method_sz, r.method + 1,
                        r.method_len - 2) > 0) {
      if (r.params == NULL) r.params = "";
      r.userdata = m->cbdata;
      m->cb(&r);
      break;
    }
  }
  if (m == NULL) {
    jsonrpc_return_error(&r, JSONRPC_ERROR_NOT_FOUND, "method not found", NULL);
  }
 }
 static int jsonrpc_print_methods(mjson_print_fn_t fn, void *fndata,
                                 va_list *ap) {
  struct jsonrpc_ctx *ctx = va_arg(*ap, struct jsonrpc_ctx *);
  struct jsonrpc_method *m;
  int len = 0;
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (m != ctx->methods) len += mjson_print_buf(fn, fndata, ",", 1);
    len += mjson_print_str(fn, fndata, m->method, strlen(m->method));
  }
  return len;
 }
 static void rpclist(struct jsonrpc_request *r) {
  jsonrpc_return_success(r, "[%M]", jsonrpc_print_methods, r->userdata);
 }
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t response_cb,
                      void *userdata) {
  ctx->response_cb = response_cb;
  ctx->userdata = userdata;
  jsonrpc_ctx_export(ctx, MJSON_RPC_LIST_NAME, rpclist, ctx);
 }
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *p) {
  if (ctx->in_len >= (int) sizeof(ctx->in)) ctx->in_len = 0;  // Overflow
  if (ch == '\n') {  // If new line, parse frame
    if (ctx->in_len > 1) jsonrpc_ctx_process(ctx, ctx->in, ctx->in_len, fn, p);
    ctx->in_len = 0;
  } else {
    ctx->in[ctx->in_len] = ch;  // Append to the buffer
    ctx->in_len++;
  }
 }
 void jsonrpc_init(mjson_print_fn_t response_cb, void *userdata) {
  jsonrpc_ctx_init(&jsonrpc_default_context, response_cb, userdata);
 }
 #endif  // MJSON_ENABLE_RPC
@@ -0,0 +1,220 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #ifndef MJSON_H
 #define MJSON_H
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #ifndef MJSON_ENABLE_PRINT
 #define MJSON_ENABLE_PRINT 1
 #endif
 #ifndef MJSON_ENABLE_RPC
 #define MJSON_ENABLE_RPC 1
 #endif
 #ifndef MJSON_ENABLE_BASE64
 #define MJSON_ENABLE_BASE64 1
 #endif
 #ifndef MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_MERGE 0
 #elif MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_PRETTY 0
 #elif MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_NEXT
 #define MJSON_ENABLE_NEXT 0
 #endif
 #ifndef MJSON_RPC_IN_BUF_SIZE
 #define MJSON_RPC_IN_BUF_SIZE 256
 #endif
 #ifndef MJSON_RPC_LIST_NAME
 #define MJSON_RPC_LIST_NAME "rpc.list"
 #endif
 #ifdef __cplusplus
 extern "C" {
 #endif
 enum {
  MJSON_ERROR_INVALID_INPUT = -1,
  MJSON_ERROR_TOO_DEEP = -2,
 };
 enum mjson_tok {
  MJSON_TOK_INVALID = 0,
  MJSON_TOK_KEY = 1,
  MJSON_TOK_STRING = 11,
  MJSON_TOK_NUMBER = 12,
  MJSON_TOK_TRUE = 13,
  MJSON_TOK_FALSE = 14,
  MJSON_TOK_NULL = 15,
  MJSON_TOK_ARRAY = 91,
  MJSON_TOK_OBJECT = 123,
 };
 #define MJSON_TOK_IS_VALUE(t) ((t) > 10 && (t) < 20)
 typedef int (*mjson_cb_t)(int ev, const char *s, int off, int len, void *ud);
 #ifndef MJSON_MAX_DEPTH
 #define MJSON_MAX_DEPTH 20
 #endif
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud);
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen);
 int mjson_get_number(const char *s, int len, const char *path, double *v);
 int mjson_get_bool(const char *s, int len, const char *path, int *v);
 int mjson_get_string(const char *s, int len, const char *path, char *to, int n);
 int mjson_get_hex(const char *s, int len, const char *path, char *to, int n);
 #if MJSON_ENABLE_NEXT
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype);
 #endif
 #if MJSON_ENABLE_BASE64
 int mjson_get_base64(const char *s, int len, const char *path, char *to, int n);
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen);
 #endif
 #if MJSON_ENABLE_PRINT
 typedef int (*mjson_print_fn_t)(const char *buf, int len, void *userdata);
 typedef int (*mjson_vprint_fn_t)(mjson_print_fn_t, void *, va_list *);
 struct mjson_fixedbuf {
  char *ptr;
  int size, len;
 };
 int mjson_printf(mjson_print_fn_t, void *, const char *fmt, ...);
 int mjson_vprintf(mjson_print_fn_t, void *, const char *fmt, va_list ap);
 int mjson_print_str(mjson_print_fn_t, void *, const char *s, int len);
 int mjson_print_int(mjson_print_fn_t, void *, int value, int is_signed);
 int mjson_print_long(mjson_print_fn_t, void *, long value, int is_signed);
 int mjson_print_buf(mjson_print_fn_t fn, void *, const char *buf, int len);
 int mjson_print_null(const char *ptr, int len, void *userdata);
 int mjson_print_file(const char *ptr, int len, void *userdata);
 int mjson_print_fixed_buf(const char *ptr, int len, void *userdata);
 int mjson_print_dynamic_buf(const char *ptr, int len, void *userdata);
 #if MJSON_ENABLE_PRETTY
 int mjson_pretty(const char *, int, const char *, mjson_print_fn_t, void *);
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *, int, const char *, int, mjson_print_fn_t, void *);
 #endif
 #endif  // MJSON_ENABLE_PRINT
 #if MJSON_ENABLE_RPC
 void jsonrpc_init(mjson_print_fn_t, void *userdata);
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2);
 struct jsonrpc_request {
  const char *frame;    // Points to the whole frame
  int frame_len;        // Frame length
  const char *params;   // Points to the "params" in the request frame
  int params_len;       // Length of the "params"
  const char *id;       // Points to the "id" in the request frame
  int id_len;           // Length of the "id"
  const char *method;   // Points to the "method" in the request frame
  int method_len;       // Length of the "method"
  mjson_print_fn_t fn;  // Printer function
  void *fndata;         // Printer function data
  void *userdata;       // Callback's user data as specified at export time
 };
 struct jsonrpc_method {
  const char *method;
  int method_sz;
  void (*cb)(struct jsonrpc_request *);
  void *cbdata;
  struct jsonrpc_method *next;
 };
 // Main RPC context, stores current request information and a list of
 // exported RPC methods.
 struct jsonrpc_ctx {
  struct jsonrpc_method *methods;
  void *userdata;
  mjson_print_fn_t response_cb;
  int in_len;
  char in[MJSON_RPC_IN_BUF_SIZE];
 };
 // Registers function fn under the given name within the given RPC context
 #define jsonrpc_ctx_export(ctx, name, fn, ud)                                \
  do {                                                                       \
    static struct jsonrpc_method m = {(name), sizeof(name) - 1, (fn), 0, 0}; \
    m.cbdata = (ud);                                                         \
    m.next = (ctx)->methods;                                                 \
    (ctx)->methods = &m;                                                     \
  } while (0)
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t, void *);
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...);
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...);
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata);
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *fndata);
 extern struct jsonrpc_ctx jsonrpc_default_context;
 #define jsonrpc_export(name, fn, ud) \
  jsonrpc_ctx_export(&jsonrpc_default_context, (name), (fn), (ud))
 #define jsonrpc_process(buf, len, fn, data) \
  jsonrpc_ctx_process(&jsonrpc_default_context, (buf), (len), (fn), (data))
 #define jsonrpc_process_byte(x, fn, data) \
  jsonrpc_ctx_process_byte(&jsonrpc_default_context, (x), (fn), (data))
 #define JSONRPC_ERROR_INVALID -32700    /* Invalid JSON was received */
 #define JSONRPC_ERROR_NOT_FOUND -32601  /* The method does not exist */
 #define JSONRPC_ERROR_BAD_PARAMS -32602 /* Invalid params passed */
 #define JSONRPC_ERROR_INTERNAL -32603   /* Internal JSON-RPC error */
 #endif  // MJSON_ENABLE_RPC
 #ifdef __cplusplus
 }
 #endif
 #endif  // MJSON_H
@@ -0,0 +1,312 @@
 const {h, render, Component} = preact;
 const html = htm.bind(h);
 class Login extends Component {
  state = {user: '', pass: ''};
  onclick = (app) => {
    const authhdr = 'Basic ' + btoa(this.state.user + ':' + this.state.pass);
    const headers = {Authorization: authhdr};
    return axios.get('/api/login', {headers})
        .then(res => app.setUser(res.data.token))
        .catch(err => alert('Login failed'));
  };
  onpassinput = (ev) => this.setState({pass: ev.target.value});
  onuserinput = (ev) => this.setState({user: ev.target.value});
  render({app}, {user, pass, signup}) {
    return html`
      <div class='mx-auto bg-light rounded border my-5' style='max-width: 480px;'>
        <div class='form p-5 rounded form-sm'>
          <h4 class="text-muted mb-4">Login </h4>
          <input type='email' placeholder='Email' class='my-2 form-control'
            oninput=${this.onuserinput} value=${user} />
          <input type="password" placeholder="Password" class="my-2 form-control"
            oninput=${this.onpassinput} value=${pass}
            onchange=${ev => this.onclick(app)} />
          <div class="mb-4">
            <button class="btn btn-info btn-block" 
    disabled=${!user || !pass} onclick="${ev => this.onclick(app)}"
            > Login </button>
          </div>
          <div class="text-muted small">
            Valid logins: admin:admin, user1:pass1, user2:pass2
          </div>
        </div>
      </div>
    `
  }
 };
 class Dropdown extends Component {
  state = {show: false};
  render(props, state) {
    const onclick = x => this.setState({show: x});
    const show = state.show ? 'show' : '';
    return html`
      <div class="dropdown autoexpand ${props.cls}">
        <div type="buttonx" onclick=${() => onclick(!state.show)}
          class="dropdown-toggle my-0 ${props.bcls}"
          data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
          ${props.title}
        </div>
        <div onclick=${() => onclick(false)} style=${props.dstyle}
          class="dropdown-menu ${props.dcls} ${show}">
          ${props.children}
        </div>
      </div>`;
  }
 };
 const NavLink = ({href, title, url}) => html`<a class="nav-item nav-link
    ${url == href ? 'active' : ''}"
    target=${href.match(/^http/) ? '_blank' : ''}
    href="${href.match(/^http/) ? '' : '#'}${href}">${title}</a>`;
 class Header extends Component {
  state = {expanded: false};
  ontoggle = () => this.setState({expanded: !this.state.expanded});
  render(props, state) {
    const u = props.app.state.user || {};
    return html`
      <nav class="navbar navbar-expand-md navbar-dark bg-dark">
        <a class="navbar-brand" href="#">
          <img src="images/logo.png" width="26" height="26" alt="" class="mr-2" />
          MyProduct
        </a>
          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation" 
            onclick=${() => this.ontoggle()} >
          <span class="navbar-toggler-icon"></span>
        </button>
        <div class="navbar-collapse ${state.expanded ? '' : 'collapse'}"
            id="navbarNav">
          <div class="nav navbar-nav mr-auto">
            <${NavLink} href="/" title="Dashboard" url=${props.url} />
            <${NavLink} href="/logs" title="Logs" url=${props.url} />
          </div>
        </div>
        <form class="form-inline">
          <${Dropdown} title="${u.user}" cls="mr-2" 
          bcls="btn btn-sm btn-outline-light pointer" dcls="m-0 dropdown-menu-right">
            <div onclick=${() => props.app.setUser('')}
              class="dropdown-item small pointer text-center">logout</div>
          </${Dropdown}>
          <img src="images/user.png" class="rounded-circle nav-item mr-2" width="30" />
        </form>
      </nav>
    `
  }
 };
 const Info = () => html`<div class="alert alert-secondary my-3">
  This dashboard shows values kept in server memory. Many clients
  can open this page. As soon as any client changes any value,
  all clients update automatically.
  The JS code that watches state changes, reconnects on network failures.
  That means if server restarts, dashboard on all connected clients
  refresh automatically.
  You can use <code>curl</code> command-line utility:
  <br/><code>curl localhost:8000/api/config/get</code>
  <br/><code>curl localhost:8000/api/config/watch</code>
  <br/><code>curl localhost:8000/api/config/set -d '{"a":123}'</code>
  <br/><span class="badge badge-danger">NOTE:</span> administrators
  can change settings values, whilst users cannot.
 </div>`;
 class DashVideo extends Component {
  render(props, state) {
    const onclick = ev => axios.post(
        '/api/config/set', {value1: +state.value1, value2: state.value2});
    // alert(JSON.stringify(state));
    return html`<div id="form">
      <div><b>Change values</b></div>
      <table>
        <tr><td>Value 1 (number):</td><td><input value=${state.value1}
          onInput=${linkState(this, 'value1')} /></td></tr>
        <tr><td>Value 2 (string):</td><td><input value=${state.value2}
            onInput=${linkState(this, 'value2')}/></td></tr>
        <tr><td></td>
          <td><button onClick=${onclick}>Save values</button></td></tr>
      </table>
    </div>`
  }
 };
 class DashForm extends Component {
  render(props, state) {
    const onclick = ev => axios.post(
        '/api/config/set', {value1: +state.value1, value2: state.value2});
    // alert(JSON.stringify(state));
    return html`<div id="form">
      <div><b>Change values</b></div>
      <table>
        <tr><td>Value 1 (number):</td><td><input class="form-control form-control-sm"
          value=${state.value1}
          onInput=${linkState(this, 'value1')} /></td></tr>
        <tr><td>Value 2 (string):</td><td><input class="form-control form-control-sm"
            value=${state.value2}
            onInput=${linkState(this, 'value2')}/></td></tr>
        <tr><td></td>
          <td><button class="btn btn-primary btn-block"
            onClick=${onclick}>Save values</button></td></tr>
      </table>
    </div>`
  }
 };
 class DashSettings extends Component {
  state = {value1: null, value2: null};
  componentDidMount() {
    axios.get('/api/config/get')
        .then(r => this.setState(r.data))
        .catch(e => console.log(e));
    var self = this;
    var f = function(reader) {
      return reader.read().then(function(result) {
        var data = String.fromCharCode.apply(null, result.value);
        self.setState(JSON.parse(data));
        // console.log(JSON.parse(data));
        if (!result.done) return f(reader);
      });
    };
    fetch('/api/config/watch')
        .then(r => r.body.getReader())
        .then(f)
        .catch(e => setTimeout(x => self.componentDidMount(), 1000));
  }
  render(props, state) {
    return html
    `<div id="dashboard" style="display: flex; justify-content: flex-evenly;">
        <div style="width:50%;text-align:center;">Value 1 (number):
          <div style="font-size:140%;"><b>${state.value1}</b></div></div>
        <div style="width:50%;text-align:center;">Value 2 (string):
          <div style="font-size:140%;"><b>${state.value2}</b></div></div>
    </div>`
  }
 };
 class AdminDashboard extends Component {
  render(props, state) {
    return html`<div class="container-fluid">
      <${Info} />
      <div class="card-deck">
        <div class="card">
          <div class="card-header">Settings</div>
          <div class="card-body"><${DashSettings} /></div>
        </div>
        <div class="card">
          <div class="card-header">Video stream</div>
          <div class="card-body"><img src="/api/video1" class="mw-100" /></div>
        </div>
        <div class="card">
          <div class="card-header">Change settings</div>
          <div class="card-body"><${DashForm} /></div>
        </div>
      </div>
    </div>`
  }
 }
 class UserDashboard extends Component {
  render(props, state) {
    return html`<div class="container-fluid">
      <${Info} />
      <div class="card-deck">
        <div class="card">
          <div class="card-header">Settings</div>
          <div class="card-body"><${DashSettings} /></div>
        </div>
        <div class="card">
          <div class="card-header">Video stream</div>
          <div class="card-body"><img src="/api/video1" class="mw-100" /></div>
        </div>
      </div>
    </div>`
  }
 }
 class Logs extends Component {
  state = {live: '', static: ''};
  componentDidMount() {
    var self = this;
    var f = function(r) {
      return r.read().then(function(result) {
        var data = String.fromCharCode.apply(null, result.value);
        var live = self.state.live + data;
        self.setState({live});   // Append live log
        if (!result.done) f(r);  // Read next chunk
      });
    };
    fetch('/api/log/static')
        .then(r => r.text())
        .then(r => {
          self.setState({static: r});
        })
        .then(r => fetch('/api/log/live'))
        .then(r => r.body.getReader())
        .then(f);
  }
  render(props, state) {
    return html`<div class="container-fluid">
      <div class="alert alert-secondary my-3">
        A div below shows file log.txt, which is produced by the server.
        The server appends a new log message to that file every second,
        and a div below also shows that, implementing a "live log" feature.
        JS code on this page first fetches /api/log/static that returns
        log.txt contents, then fetches /api/log/live that does not return,
        but feeds chunks of data as they arrive (live log).
        <br/><br/>
        You can also use <code>curl</code> command-line utility to see
        live logs:
        <br/><code>curl localhost:8000/api/log/live</code>
      </div>
      <div class="card-deck">
        <div class="card">
          <div class="card-header">Static</div>
          <div class="card-body"><pre class="log">${state.static}</pre></div>
        </div>
        <div class="card">
          <div class="card-header">Live</div>
          <div class="card-body"><pre class="log">${state.live}</pre></div>
        </div>
      </div>
    </div>`
  }
 }
 class App extends Component {
  state = {user: null, url: '/'};
  setUser(token) {
    const maxAge = token ? 86400 : 0;
    document.cookie = `access_token=${token};path=/;max-age=${maxAge}`;
    // this.setState({token});
    return axios.get('/api/login')
        .then(res => this.setState({user: res.data}))
        .catch(err => this.setState({user: {}}));
  }
  componentDidMount() {
    const getCookie = name => {
      var v = document.cookie.match('(^|;) ?' + name + '=([^;]*)(;|$)');
      return v ? v[2] : '';
    };
    this.setUser(getCookie('access_token'));  // Move from state1 to 2 or 3
  }
  render(props, state) {
    // We have three states:
    // 1. Beginning. We don't know if we have a valid auth token or not
    // 2. We sent an /api/login request, and failed to login
    // 3. We sent an /api/login request, and succeeded to login
    if (!state.user) return '';                          // State 1
    if (!state.user.user) return h(Login, {app: this});  // State 2
    return h(                                            // State 3
        'div', {}, h(Header, {url: state.url, app: this}),
        h(preactRouter.Router, {
          history: History.createHashHistory(),
          onChange: ev => this.setState({url: ev.url}),
        },
          h(state.user.user == 'admin' ? AdminDashboard : UserDashboard,
            {default: true, app: this}),
          h(Logs, {path: 'logs', app: this})));
  }
 };
 window.onload = () => render(h(App), document.body);
@@ -0,0 +1,3 @@
 /* axios v0.21.1 | (c) 2020 by Matt Zabriskie */
 !function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t():"function"==typeof define&&define.amd?define([],t):"object"==typeof exports?exports.axios=t():e.axios=t()}(this,function(){return function(e){function t(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return e[r].call(o.exports,o,o.exports,t),o.loaded=!0,o.exports}var n={};return t.m=e,t.c=n,t.p="",t(0)}([function(e,t,n){e.exports=n(1)},function(e,t,n){"use strict";function r(e){var t=new i(e),n=s(i.prototype.request,t);return o.extend(n,i.prototype,t),o.extend(n,t),n}var o=n(2),s=n(3),i=n(4),a=n(22),u=n(10),c=r(u);c.Axios=i,c.create=function(e){return r(a(c.defaults,e))},c.Cancel=n(23),c.CancelToken=n(24),c.isCancel=n(9),c.all=function(e){return Promise.all(e)},c.spread=n(25),c.isAxiosError=n(26),e.exports=c,e.exports.default=c},function(e,t,n){"use strict";function r(e){return"[object Array]"===R.call(e)}function o(e){return"undefined"==typeof e}function s(e){return null!==e&&!o(e)&&null!==e.constructor&&!o(e.constructor)&&"function"==typeof e.constructor.isBuffer&&e.constructor.isBuffer(e)}function i(e){return"[object ArrayBuffer]"===R.call(e)}function a(e){return"undefined"!=typeof FormData&&e instanceof FormData}function u(e){var t;return t="undefined"!=typeof ArrayBuffer&&ArrayBuffer.isView?ArrayBuffer.isView(e):e&&e.buffer&&e.buffer instanceof ArrayBuffer}function c(e){return"string"==typeof e}function f(e){return"number"==typeof e}function p(e){return null!==e&&"object"==typeof e}function d(e){if("[object Object]"!==R.call(e))return!1;var t=Object.getPrototypeOf(e);return null===t||t===Object.prototype}function l(e){return"[object Date]"===R.call(e)}function h(e){return"[object File]"===R.call(e)}function m(e){return"[object Blob]"===R.call(e)}function y(e){return"[object Function]"===R.call(e)}function g(e){return p(e)&&y(e.pipe)}function v(e){return"undefined"!=typeof URLSearchParams&&e instanceof URLSearchParams}function x(e){return e.replace(/^\s*/,"").replace(/\s*$/,"")}function w(){return("undefined"==typeof navigator||"ReactNative"!==navigator.product&&"NativeScript"!==navigator.product&&"NS"!==navigator.product)&&("undefined"!=typeof window&&"undefined"!=typeof document)}function b(e,t){if(null!==e&&"undefined"!=typeof e)if("object"!=typeof e&&(e=[e]),r(e))for(var n=0,o=e.length;n<o;n++)t.call(null,e[n],n,e);else for(var s in e)Object.prototype.hasOwnProperty.call(e,s)&&t.call(null,e[s],s,e)}function E(){function e(e,n){d(t[n])&&d(e)?t[n]=E(t[n],e):d(e)?t[n]=E({},e):r(e)?t[n]=e.slice():t[n]=e}for(var t={},n=0,o=arguments.length;n<o;n++)b(arguments[n],e);return t}function j(e,t,n){return b(t,function(t,r){n&&"function"==typeof t?e[r]=S(t,n):e[r]=t}),e}function C(e){return 65279===e.charCodeAt(0)&&(e=e.slice(1)),e}var S=n(3),R=Object.prototype.toString;e.exports={isArray:r,isArrayBuffer:i,isBuffer:s,isFormData:a,isArrayBufferView:u,isString:c,isNumber:f,isObject:p,isPlainObject:d,isUndefined:o,isDate:l,isFile:h,isBlob:m,isFunction:y,isStream:g,isURLSearchParams:v,isStandardBrowserEnv:w,forEach:b,merge:E,extend:j,trim:x,stripBOM:C}},function(e,t){"use strict";e.exports=function(e,t){return function(){for(var n=new Array(arguments.length),r=0;r<n.length;r++)n[r]=arguments[r];return e.apply(t,n)}}},function(e,t,n){"use strict";function r(e){this.defaults=e,this.interceptors={request:new i,response:new i}}var o=n(2),s=n(5),i=n(6),a=n(7),u=n(22);r.prototype.request=function(e){"string"==typeof e?(e=arguments[1]||{},e.url=arguments[0]):e=e||{},e=u(this.defaults,e),e.method?e.method=e.method.toLowerCase():this.defaults.method?e.method=this.defaults.method.toLowerCase():e.method="get";var t=[a,void 0],n=Promise.resolve(e);for(this.interceptors.request.forEach(function(e){t.unshift(e.fulfilled,e.rejected)}),this.interceptors.response.forEach(function(e){t.push(e.fulfilled,e.rejected)});t.length;)n=n.then(t.shift(),t.shift());return n},r.prototype.getUri=function(e){return e=u(this.defaults,e),s(e.url,e.params,e.paramsSerializer).replace(/^\?/,"")},o.forEach(["delete","get","head","options"],function(e){r.prototype[e]=function(t,n){return this.request(u(n||{},{method:e,url:t,data:(n||{}).data}))}}),o.forEach(["post","put","patch"],function(e){r.prototype[e]=function(t,n,r){return this.request(u(r||{},{method:e,url:t,data:n}))}}),e.exports=r},function(e,t,n){"use strict";function r(e){return encodeURIComponent(e).replace(/%3A/gi,":").replace(/%24/g,"$").replace(/%2C/gi,",").replace(/%20/g,"+").replace(/%5B/gi,"[").replace(/%5D/gi,"]")}var o=n(2);e.exports=function(e,t,n){if(!t)return e;var s;if(n)s=n(t);else if(o.isURLSearchParams(t))s=t.toString();else{var i=[];o.forEach(t,function(e,t){null!==e&&"undefined"!=typeof e&&(o.isArray(e)?t+="[]":e=[e],o.forEach(e,function(e){o.isDate(e)?e=e.toISOString():o.isObject(e)&&(e=JSON.stringify(e)),i.push(r(t)+"="+r(e))}))}),s=i.join("&")}if(s){var a=e.indexOf("#");a!==-1&&(e=e.slice(0,a)),e+=(e.indexOf("?")===-1?"?":"&")+s}return e}},function(e,t,n){"use stricLine truncated
 //# sourceMappingURL=axios.min.map
@@ -0,0 +1,7 @@
 /*!
 * Bootstrap v4.3.1 (https://getbootstrap.com/)
 * Copyright 2011-2019 The Bootstrap Authors
 * Copyright 2011-2019 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 */:root{--blue:#007bff;--indigo:#6610f2;--purple:#6f42c1;--pink:#e83e8c;--red:#dc3545;--orange:#fd7e14;--yellow:#ffc107;--green:#28a745;--teal:#20c997;--cyan:#17a2b8;--white:#fff;--gray:#6c757d;--gray-dark:#343a40;--primary:#007bff;--secondary:#6c757d;--success:#28a745;--info:#17a2b8;--warning:#ffc107;--danger:#dc3545;--light:#f8f9fa;--dark:#343a40;--breakpoint-xs:0;--breakpoint-sm:576px;--breakpoint-md:768px;--breakpoint-lg:992px;--breakpoint-xl:1200px;--font-family-sans-serif:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-family-monospace:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier 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 //# sourceMappingURL=preact.min.js.map
@@ -0,0 +1,7 @@
 html, body { margin: 0; padding: 0; height: 100%; }
 select, input, label::before, textarea { outline: none; box-shadow:none !important; border: 1px solid #ccc !important; }
 .btn:focus,.btn:active:focus,.btn.active:focus,
 .btn.focus,.btn:active.focus,.btn.active.focus { outline: none; box-shadow:none !important; }
 .dropdown.autoexpand:hover>.dropdown-menu { display: block; }
 .pointer { cursor: pointer; }
 .log { max-height: 10em; overflow: auto; height: 100%; }
@@ -1,12 +0,0 @@
 # Copyright (c) 2014 Cesanta Software
 # All rights reserved
 PROG = cookie_auth
 CFLAGS = -W -Wall -I../.. -pthread -g -O0 $(CFLAGS_EXTRA)
 SOURCES = $(PROG).c ../../mongoose.c
 $(PROG): $(SOURCES)
 	$(CC) -o $(PROG) $(SOURCES) $(CFLAGS)
 clean:
 	rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib
@@ -1,96 +0,0 @@
 // Copyright (c) 2014 Cesanta Software
 // All rights reserved
 #include <stdio.h>
 #include <string.h>
 #include <time.h>
 #include "mongoose.h"
 static const char *s_login_uri = "/login.html";
 static const char *s_secret = ":-)";  // Must be known only to server
 static void generate_ssid(const char *user_name, const char *expiration_date,
                          char *ssid, size_t ssid_size) {
  char hash[33];
  mg_md5(hash, user_name, ":", expiration_date, ":", s_secret, NULL);
  snprintf(ssid, ssid_size, "%s|%s|%s", user_name, expiration_date, hash);
 }
 static int check_auth(struct mg_connection *conn) {
  char ssid[100], calculated_ssid[100], name[100], expire[100];
  // Always authenticate requests to login page
  if (strcmp(conn->uri, s_login_uri) == 0) {
    return MG_TRUE;
  }
  // Look for session ID in the Cookie.
  // That session ID can be validated against the database that stores
  // current active sessions.
  mg_parse_header(mg_get_header(conn, "Cookie"), "ssid", ssid, sizeof(ssid));
  if (sscanf(ssid, "%[^|]|%[^|]|", name, expire) == 2) {
    generate_ssid(name, expire, calculated_ssid, sizeof(calculated_ssid));
    if (strcmp(ssid, calculated_ssid) == 0) {
      return MG_TRUE;  // Authenticate
    }
  }
  // Auth failed, do NOT authenticate, redirect to login page
  mg_printf(conn, "HTTP/1.1 302 Moved\r\nLocation: %s\r\n\r\n", s_login_uri);
  return MG_FALSE;
 }
 static int check_login_form_submission(struct mg_connection *conn) {
  char name[100], password[100], ssid[100], expire[100], expire_epoch[100];
  mg_get_var(conn, "name", name, sizeof(name));
  mg_get_var(conn, "password", password, sizeof(password));
  // A real authentication mechanism should be employed here.
  // Also, the whole site should be served through HTTPS.
  if (strcmp(name, "Joe") == 0 && strcmp(password, "Doe") == 0) {
    // Generate expiry date
    time_t t = time(NULL) + 3600;  // Valid for 1 hour
    snprintf(expire_epoch, sizeof(expire_epoch), "%lu", (unsigned long) t);
    strftime(expire, sizeof(expire), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&t));
    generate_ssid(name, expire_epoch, ssid, sizeof(ssid));
    // Set "session id" cookie, there could be some data encoded in it.
    mg_printf(conn,
              "HTTP/1.1 302 Moved\r\n"
              "Set-Cookie: ssid=%s; expire=\"%s\"; http-only; HttpOnly;\r\n"
              "Location: /\r\n\r\n",
              ssid, expire);
    return MG_TRUE;
  }
  return MG_FALSE;
 }
 static int serve_request(struct mg_connection *conn) {
  if (strcmp(conn->uri, s_login_uri) == 0 &&
      strcmp(conn->request_method, "POST") == 0) {
    return check_login_form_submission(conn);
  }
  return MG_FALSE;  // Serve files in the document_root
 }
 static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
  switch (ev) {
    case MG_AUTH: return check_auth(conn);
    case MG_REQUEST: return serve_request(conn);
    default: return MG_FALSE;
  }
 }
 int main(void) {
  struct mg_server *server = mg_create_server(NULL, ev_handler);
  mg_set_option(server, "listening_port", "8080");
  mg_set_option(server, "document_root", ".");
  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
  for (;;) {
    mg_poll_server(server, 1000);
  }
  mg_destroy_server(&server);
  return 0;
 }
@@ -1,33 +0,0 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
  <meta charset="utf-8" />
  <title>WebSocket Test</title>
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <style type="text/css">
    body {
      background-color: #cde; margin: 0;
      padding: 0; font: 14px Helvetica, Arial, sans-serif;
    }
    * { outline: none; }
    div.content {
      width: 800px; margin: 2em auto; padding: 20px 50px;
      background-color: #fff; border-radius: 1em;
    }
    label { display: inline-block; min-width: 7em; }
    input { border: 1px solid #ccc; padding: 0.4em; margin: 0 0 10px 0; }
    a:link, a:visited { color: #69c; text-decoration: none; }
    @media (max-width: 700px) {
      body { background-color: #fff; }
      div.content {
        width: auto; margin: 0 auto; border-radius: 0; padding: 1em;
      }
    }
 </style>
 <body>
  <div class="content">
    <h1>Mongoose Cookie Base Authentication</h1>
    <p>This is an index page. Authentication succeeded.</p>
 </body>
 </html>
@@ -1,44 +0,0 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
  <meta charset="utf-8" />
  <title>WebSocket Test</title>
  <meta name="viewport" content="width=device-width, initial-scale=1" />
  <style type="text/css">
    body {
      background-color: #cde; margin: 0;
      padding: 0; font: 14px Helvetica, Arial, sans-serif;
    }
    * { outline: none; }
    div.content {
      width: 800px; margin: 2em auto; padding: 20px 50px;
      background-color: #fff; border-radius: 1em;
    }
    label { display: inline-block; min-width: 7em; }
    input { border: 1px solid #ccc; padding: 0.4em; margin: 0 0 10px 0; }
    a:link, a:visited { color: #69c; text-decoration: none; }
    @media (max-width: 700px) {
      body { background-color: #fff; }
      div.content {
        width: auto; margin: 0 auto; border-radius: 0; padding: 1em;
      }
    }
 </style>
 <body>
  <div class="content">
    <h1>Mongoose Cookie Based Authentication</h1>
    <p>Use name "Joe", password "Doe" to login.</p>
    <form method="POST">
      <div>
        <label>Name:</label>
        <input type="text" name="name"/>
      </div><div>
        <label>Password:</label>
        <input type="password" name="password"/>
      </div><div>
        <input type="submit" value="Login"/>
      </div>
    </form>
 </body>
 </html>
@@ -1,43 +0,0 @@
 // This file is part of mongoose web server project,
 // https://github.com/cesanta/mongoose
 using System;
 public class Program {
  static private int EventHandler(IntPtr conn_ptr, int ev) {
 		MongooseConnection conn = (MongooseConnection)
 			System.Runtime.InteropServices.Marshal.PtrToStructure(
 				conn_ptr , typeof(MongooseConnection));
 		if (ev == 102) {
 			// MG_AUTH
 			return 1;
 		} else if (ev == 103) {
 			// MG_REQUEST
 	    Mongoose.send_data(conn_ptr, "Hello from C#!\n");
 			Mongoose.send_data(conn_ptr, "URI: " + conn.uri + "\n");
 			Mongoose.send_data(conn_ptr, "HTTP Headers:\n");
 			for (int i = 0; i < conn.num_headers; i++) {
 				IntPtr name = conn.http_headers[i].name;
 				IntPtr val = conn.http_headers[i].value;
 				System.Runtime.InteropServices.Marshal.PtrToStringAnsi(name);
 				Mongoose.send_data(conn_ptr, "  " +
 					System.Runtime.InteropServices.Marshal.PtrToStringAnsi(name) + ": " +
 						System.Runtime.InteropServices.Marshal.PtrToStringAnsi(val) + "\n");
 			}			
      return 1;
 		}
 		return 0;
  }
  static void Main() {
    Mongoose web_server = new Mongoose(".", "9001",
        new MongooseEventHandler(EventHandler));
    Console.WriteLine("Mongoose started, press Ctrl-C to exit.");
 		for (;;) {
 			web_server.poll(1000);
 		}
  }
 }
@@ -1,68 +0,0 @@
 // This file is part of mongoose web server project,
 // https://github.com/cesanta/mongoose
 using System;
 using System.Runtime.InteropServices;
 [StructLayout(LayoutKind.Sequential)] public struct MongooseHeader {
  [MarshalAs(UnmanagedType.LPTStr)] public IntPtr name;
  [MarshalAs(UnmanagedType.LPTStr)] public IntPtr value;
 };
 // mongoose.h :: struct mg_connection
 [StructLayout(LayoutKind.Sequential)] public struct MongooseConnection {
  [MarshalAs(UnmanagedType.LPTStr)] public string request_method;
  [MarshalAs(UnmanagedType.LPTStr)] public string uri;
  [MarshalAs(UnmanagedType.LPTStr)] public string http_version;
  [MarshalAs(UnmanagedType.LPTStr)] public string query_string;
 	[MarshalAs(UnmanagedType.ByValArray,SizeConst=48)] public char[] remote_ip;
 	[MarshalAs(UnmanagedType.LPTStr)] public string local_ip;
 	[MarshalAs(UnmanagedType.U2)] public short remote_port;
 	[MarshalAs(UnmanagedType.U2)] public short local_port;
 	[MarshalAs(UnmanagedType.SysInt)] public int num_headers;
  [MarshalAs(UnmanagedType.ByValArray,SizeConst=30)]
    public MongooseHeader[] http_headers;
 	[MarshalAs(UnmanagedType.LPTStr)] public IntPtr content;
 	[MarshalAs(UnmanagedType.SysInt)] public int content_len;
 	[MarshalAs(UnmanagedType.SysInt)] public int is_websocket;
 	[MarshalAs(UnmanagedType.SysInt)] public int status_code;
 	[MarshalAs(UnmanagedType.SysInt)] public int wsbits;
 };
 public delegate int MongooseEventHandler(IntPtr c, int ev);
 public class Mongoose {
  public const string dll_ = "mongoose";
  private IntPtr server_;
 	[DllImport(dll_)] private static extern IntPtr
 		mg_create_server(IntPtr user_data, MongooseEventHandler eh);
 	[DllImport(dll_)] private static extern int
 		mg_poll_server(IntPtr server, int milli);
  [DllImport(dll_)] private static extern IntPtr
 		mg_set_option(IntPtr server, string name, string value);
 	[DllImport(dll_)] public static extern int
 		mg_send_data(IntPtr conn, string data, int length);	
  public Mongoose(string document_root,
                  string listening_port,
                  MongooseEventHandler event_handler) {
    server_ = mg_create_server(IntPtr.Zero, event_handler);
 		mg_set_option(server_, "document_root", document_root);
 		mg_set_option(server_, "listening_port", listening_port);
  }
  public static int send_data(IntPtr conn, string data) {
    return mg_send_data(conn, data, data.Length);
  }
 	public void poll(int milli) {
    mg_poll_server(server_, milli);
  }
 	// TODO: add destructor and call mg_destroy_server()
 }
@@ -0,0 +1,10 @@
 PROG ?= example
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG)
 $(PROG):
 	$(CC) ../../mongoose.c -I../.. $(CFLAGS) $(EXTRA) -o $(PROG) main.c mjson.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt
@@ -0,0 +1,82 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "mjson.h"  // JSON parsing and printing
 #include "mongoose.h"
 // This is a configuration structure we're going to show on a dashboard
 static struct config {
  int value1;
  char *value2;
 } s_config = {123, NULL};
 // Stringifies the config. A caller must free() it.
 static char *stringify_config(struct config *cfg) {
  char *s = NULL;
  mjson_printf(mjson_print_dynamic_buf, &s, "{%Q:%d,%Q:%Q}", "value1",
               cfg->value1, "value2", cfg->value2);
  return s;
 }
 // Update config structure. Return true if changed, false otherwise
 static bool update_config(struct mg_http_message *hm, struct config *cfg) {
  bool changed = false;
  char buf[256];
  double dv;
  if (mjson_get_number(hm->body.ptr, hm->body.len, "$.value1", &dv)) {
    s_config.value1 = dv;
    changed = true;
  }
  if (mjson_get_string(hm->body.ptr, hm->body.len, "$.value2", buf,
                       sizeof(buf)) > 0) {
    free(s_config.value2);
    s_config.value2 = strdup(buf);
    changed = true;
  }
  return changed;
 }
 // Notify all config watchers about the config change
 static void notify_config_change(struct mg_mgr *mgr) {
  struct mg_connection *c;
  char *s = stringify_config(&s_config);
  for (c = mgr->conns; c != NULL; c = c->next) {
    if (c->label[0] == 'W') mg_http_printf_chunk(c, "%s\n", s);
  }
  free(s);
 }
 // HTTP request handler function. It implements the following endpoints:
 //   /api/config/get - returns current config
 //   /api/config/set - updates current config
 //   /api/config/watch - does not return. Sends config as it changes in
 //   chunks all other URI - serves web_root/ directory
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    if (mg_http_match_uri(hm, "/api/config/get")) {
      char *s = stringify_config(&s_config);
      mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: %d\r\n\r\n%s\n",
                (int) strlen(s) + 1, s);
      free(s);
    } else if (mg_http_match_uri(hm, "/api/config/set")) {
      if (update_config(hm, &s_config)) notify_config_change(fn_data);
      mg_printf(c, "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
    } else if (mg_http_match_uri(hm, "/api/config/watch")) {
      c->label[0] = 'W';  // Mark ourselves as a config watcher
      mg_printf(c, "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
    } else {
      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
      mg_http_serve_dir(c, ev_data, &opts);
    }
  }
 }
 int main(void) {
  struct mg_mgr mgr;
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, "http://localhost:8000", cb, &mgr);
  for (;;) mg_mgr_poll(&mgr, 1000);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1,981 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #include "mjson.h"
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
 #else
 #define va_copy(x, y) (x) = (y)
 #define snprintf _snprintf
 #define alloca _alloca
 #endif
 static int mjson_esc(int c, int esc) {
  const char *p, *esc1 = "\b\f\n\r\t\\\"", *esc2 = "bfnrt\\\"";
  for (p = esc ? esc1 : esc2; *p != '\0'; p++) {
    if (*p == c) return esc ? esc2[p - esc1] : esc1[p - esc2];
  }
  return 0;
 }
 static int mjson_pass_string(const char *s, int len) {
  int i;
  for (i = 0; i < len; i++) {
    if (s[i] == '\\' && i + 1 < len && mjson_esc(s[i + 1], 1)) {
      i++;
    } else if (s[i] == '\0') {
      return MJSON_ERROR_INVALID_INPUT;
    } else if (s[i] == '"') {
      return i;
    }
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud) {
  enum { S_VALUE, S_KEY, S_COLON, S_COMMA_OR_EOO } expecting = S_VALUE;
  unsigned char nesting[MJSON_MAX_DEPTH];
  int i, depth = 0;
 #define MJSONCALL(ev) \
  if (cb != NULL && cb(ev, s, start, i - start + 1, ud)) return i + 1;
 // In the ascii table, the distance between `[` and `]` is 2.
 // Ditto for `{` and `}`. Hence +2 in the code below.
 #define MJSONEOO()                                                     \
  do {                                                                 \
    if (c != nesting[depth - 1] + 2) return MJSON_ERROR_INVALID_INPUT; \
    depth--;                                                           \
    if (depth == 0) {                                                  \
      MJSONCALL(tok);                                                  \
      return i + 1;                                                    \
    }                                                                  \
  } while (0)
  for (i = 0; i < len; i++) {
    int start = i;
    unsigned char c = ((unsigned char *) s)[i];
    int tok = c;
    if (c == ' ' || c == '\t' || c == '\n' || c == '\r') continue;
    // printf("- %c [%.*s] %d %d\n", c, i, s, depth, expecting);
    switch (expecting) {
      case S_VALUE:
        if (c == '{') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          expecting = S_KEY;
          break;
        } else if (c == '[') {
          if (depth >= (int) sizeof(nesting)) return MJSON_ERROR_TOO_DEEP;
          nesting[depth++] = c;
          break;
        } else if (c == ']' && depth > 0) {  // Empty array
          MJSONEOO();
        } else if (c == 't' && i + 3 < len && memcmp(&s[i], "true", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_TRUE;
        } else if (c == 'n' && i + 3 < len && memcmp(&s[i], "null", 4) == 0) {
          i += 3;
          tok = MJSON_TOK_NULL;
        } else if (c == 'f' && i + 4 < len && memcmp(&s[i], "false", 5) == 0) {
          i += 4;
          tok = MJSON_TOK_FALSE;
        } else if (c == '-' || ((c >= '0' && c <= '9'))) {
          char *end = NULL;
          strtod(&s[i], &end);
          if (end != NULL) i += end - &s[i] - 1;
          tok = MJSON_TOK_NUMBER;
        } else if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_STRING;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        if (depth == 0) {
          MJSONCALL(tok);
          return i + 1;
        }
        expecting = S_COMMA_OR_EOO;
        break;
      case S_KEY:
        if (c == '"') {
          int n = mjson_pass_string(&s[i + 1], len - i - 1);
          if (n < 0) return n;
          i += n + 1;
          tok = MJSON_TOK_KEY;
          expecting = S_COLON;
        } else if (c == '}') {  // Empty object
          MJSONEOO();
          expecting = S_COMMA_OR_EOO;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COLON:
        if (c == ':') {
          expecting = S_VALUE;
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
      case S_COMMA_OR_EOO:
        if (depth <= 0) return MJSON_ERROR_INVALID_INPUT;
        if (c == ',') {
          expecting = (nesting[depth - 1] == '{') ? S_KEY : S_VALUE;
        } else if (c == ']' || c == '}') {
          MJSONEOO();
        } else {
          return MJSON_ERROR_INVALID_INPUT;
        }
        break;
    }
    MJSONCALL(tok);
  }
  return MJSON_ERROR_INVALID_INPUT;
 }
 struct msjon_get_data {
  const char *path;     // Lookup json path
  int pos;              // Current path index
  int d1;               // Current depth of traversal
  int d2;               // Expected depth of traversal
  int i1;               // Index in an array
  int i2;               // Expected index in an array
  int obj;              // If the value is array/object, offset where it starts
  const char **tokptr;  // Destination
  int *toklen;          // Destination length
  int tok;              // Returned token
 };
 static int mjson_plen(const char *s) {
  int i = 0;
  while (s[i] != '\0' && s[i] != '.' && s[i] != '[') i++;
  return i;
 }
 static int mjson_get_cb(int tok, const char *s, int off, int len, void *ud) {
  struct msjon_get_data *data = (struct msjon_get_data *) ud;
  // printf("--> %2x %2d %2d %2d %2d\t'%s'\t'%.*s'\t\t'%.*s'\n", tok, data->d1,
  // data->d2, data->i1, data->i2, data->path + data->pos, off, s, len,
  // s + off);
  if (data->tok != MJSON_TOK_INVALID) return 1;  // Found
  if (tok == '{') {
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == '[') {
    if (data->d1 == data->d2 && data->path[data->pos] == '[') {
      data->i1 = 0;
      data->i2 = (int) strtod(&data->path[data->pos + 1], NULL);
      if (data->i1 == data->i2) {
        data->d2++;
        data->pos += 3;
      }
    }
    if (!data->path[data->pos] && data->d1 == data->d2) data->obj = off;
    data->d1++;
  } else if (tok == ',') {
    if (data->d1 == data->d2 + 1) {
      data->i1++;
      if (data->i1 == data->i2) {
        while (data->path[data->pos] != ']') data->pos++;
        data->pos++;
        data->d2++;
      }
    }
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2 + 1 &&
             data->path[data->pos] == '.' && s[off] == '"' &&
             s[off + len - 1] == '"' &&
             mjson_plen(&data->path[data->pos + 1]) == len - 2 &&
             !memcmp(s + off + 1, &data->path[data->pos + 1], len - 2)) {
    data->d2++;
    data->pos += len - 1;
  } else if (tok == MJSON_TOK_KEY && data->d1 == data->d2) {
    return 1;  // Exhausted path, not found
  } else if (tok == '}' || tok == ']') {
    data->d1--;
    // data->d2--;
    if (!data->path[data->pos] && data->d1 == data->d2 && data->obj != -1) {
      data->tok = tok - 2;
      if (data->tokptr) *data->tokptr = s + data->obj;
      if (data->toklen) *data->toklen = off - data->obj + 1;
      return 1;
    }
  } else if (MJSON_TOK_IS_VALUE(tok)) {
    // printf("TOK --> %d\n", tok);
    if (data->d1 == data->d2 && !data->path[data->pos]) {
      data->tok = tok;
      if (data->tokptr) *data->tokptr = s + off;
      if (data->toklen) *data->toklen = len;
      return 1;
    }
  }
  return 0;
 }
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen) {
  struct msjon_get_data data = {jp, 1,  0,      0,      0,
                                0,  -1, tokptr, toklen, MJSON_TOK_INVALID};
  if (jp[0] != '$') return MJSON_TOK_INVALID;
  if (mjson(s, len, mjson_get_cb, &data) < 0) return MJSON_TOK_INVALID;
  return (enum mjson_tok) data.tok;
 }
 int mjson_get_number(const char *s, int len, const char *path, double *v) {
  const char *p;
  int tok, n;
  if ((tok = mjson_find(s, len, path, &p, &n)) == MJSON_TOK_NUMBER) {
    if (v != NULL) *v = strtod(p, NULL);
  }
  return tok == MJSON_TOK_NUMBER ? 1 : 0;
 }
 int mjson_get_bool(const char *s, int len, const char *path, int *v) {
  int tok = mjson_find(s, len, path, NULL, NULL);
  if (tok == MJSON_TOK_TRUE && v != NULL) *v = 1;
  if (tok == MJSON_TOK_FALSE && v != NULL) *v = 0;
  return tok == MJSON_TOK_TRUE || tok == MJSON_TOK_FALSE ? 1 : 0;
 }
 static int mjson_unescape(const char *s, int len, char *to, int n) {
  int i, j;
  for (i = 0, j = 0; i < len && j < n; i++, j++) {
    if (s[i] == '\\' && i + 1 < len) {
      int c = mjson_esc(s[i + 1], 0);
      if (c == 0) return -1;
      to[j] = c;
      i++;
    } else {
      to[j] = s[i];
    }
  }
  if (j >= n) return -1;
  if (n > 0) to[j] = '\0';
  return j;
 }
 int mjson_get_string(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return -1;
  return mjson_unescape(p + 1, sz - 2, to, n);
 }
 int mjson_get_hex(const char *s, int len, const char *x, char *to, int n) {
  const char *p;
  int i, j, sz;
  if (mjson_find(s, len, x, &p, &sz) != MJSON_TOK_STRING) return -1;
  for (i = j = 0; i < sz - 3 && j < n; i += 2, j++) {
 #define HEXTOI(x) (x >= '0' && x <= '9' ? x - '0' : x - 'W')
    unsigned char a = *(const unsigned char *) (p + i + 1);
    unsigned char b = *(const unsigned char *) (p + i + 2);
    ((unsigned char *) to)[j] = (HEXTOI(a) << 4) | HEXTOI(b);
  }
  if (j < n) to[j] = '\0';
  return j;
 }
 #if MJSON_ENABLE_BASE64
 static int mjson_base64rev(int c) {
  if (c >= 'A' && c <= 'Z') {
    return c - 'A';
  } else if (c >= 'a' && c <= 'z') {
    return c + 26 - 'a';
  } else if (c >= '0' && c <= '9') {
    return c + 52 - '0';
  } else if (c == '+') {
    return 62;
  } else if (c == '/') {
    return 63;
  } else {
    return 64;
  }
 }
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen) {
  const char *end = src + n;
  int len = 0;
  while (src + 3 < end && len < dlen) {
    int a = mjson_base64rev(src[0]), b = mjson_base64rev(src[1]),
        c = mjson_base64rev(src[2]), d = mjson_base64rev(src[3]);
    dst[len++] = (a << 2) | (b >> 4);
    if (src[2] != '=' && len < dlen) {
      dst[len++] = (b << 4) | (c >> 2);
      if (src[3] != '=' && len < dlen) {
        dst[len++] = (c << 6) | d;
      }
    }
    src += 4;
  }
  if (len < dlen) dst[len] = '\0';
  return len;
 }
 int mjson_get_base64(const char *s, int len, const char *path, char *to,
                     int n) {
  const char *p;
  int sz;
  if (mjson_find(s, len, path, &p, &sz) != MJSON_TOK_STRING) return 0;
  return mjson_base64_dec(p + 1, sz - 2, to, n);
 }
 #endif  // MJSON_ENABLE_BASE64
 #if MJSON_ENABLE_NEXT
 struct nextdata {
  int off, len, depth, t, vo, arrayindex;
  int *koff, *klen, *voff, *vlen, *vtype;
 };
 static int next_cb(int tok, const char *s, int off, int len, void *ud) {
  struct nextdata *d = (struct nextdata *) ud;
  // int i;
  switch (tok) {
    case '{':
    case '[':
      if (d->depth == 0 && tok == '[') d->arrayindex = 0;
      if (d->depth == 1 && off > d->off) {
        d->vo = off;
        d->t = tok == '{' ? MJSON_TOK_OBJECT : MJSON_TOK_ARRAY;
        if (d->voff) *d->voff = off;
        if (d->vtype) *d->vtype = d->t;
      }
      d->depth++;
      break;
    case '}':
    case ']':
      d->depth--;
      if (d->depth == 1 && d->vo) {
        d->len = off + len;
        if (d->vlen) *d->vlen = d->len - d->vo;
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->depth == 1 && d->arrayindex >= 0) d->arrayindex++;
      break;
    case ',':
    case ':':
      break;
    case MJSON_TOK_KEY:
      if (d->depth == 1 && d->off < off) {
        if (d->koff) *d->koff = off;  // And report back to the user
        if (d->klen) *d->klen = len;  // If we have to
      }
      break;
    default:
      if (d->depth != 1) break;
      // If we're iterating over the array
      if (off > d->off) {
        d->len = off + len;
        if (d->vlen) *d->vlen = len;    // value length
        if (d->voff) *d->voff = off;    // value offset
        if (d->vtype) *d->vtype = tok;  // value type
        if (d->arrayindex >= 0) {
          if (d->koff) *d->koff = d->arrayindex;  // koff holds array index
          if (d->klen) *d->klen = 0;              // klen holds 0
        }
        return 1;
      }
      if (d->arrayindex >= 0) d->arrayindex++;
      break;
  }
  (void) s;
  return 0;
 }
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype) {
  struct nextdata d = {off, 0, 0, 0, 0, -1, koff, klen, voff, vlen, vtype};
  mjson(s, n, next_cb, &d);
  return d.len;
 }
 #endif
 #if MJSON_ENABLE_PRINT
 int mjson_print_fixed_buf(const char *ptr, int len, void *fndata) {
  struct mjson_fixedbuf *fb = (struct mjson_fixedbuf *) fndata;
  int i, left = fb->size - 1 - fb->len;
  if (left < len) len = left;
  for (i = 0; i < len; i++) fb->ptr[fb->len + i] = ptr[i];
  fb->len += len;
  fb->ptr[fb->len] = '\0';
  return len;
 }
 int mjson_print_dynamic_buf(const char *ptr, int len, void *fndata) {
  char *s, *buf = *(char **) fndata;
  int curlen = buf == NULL ? 0 : strlen(buf);
  if ((s = (char *) realloc(buf, curlen + len + 1)) == NULL) {
    return 0;
  } else {
    memcpy(s + curlen, ptr, len);
    s[curlen + len] = '\0';
    *(char **) fndata = s;
    return len;
  }
 }
 int mjson_print_null(const char *ptr, int len, void *userdata) {
  (void) ptr;
  (void) userdata;
  return len;
 }
 int mjson_print_file(const char *ptr, int len, void *userdata) {
  return fwrite(ptr, 1, len, (FILE *) userdata);
 }
 int mjson_print_buf(mjson_print_fn_t fn, void *fndata, const char *buf,
                    int len) {
  return fn(buf, len, fndata);
 }
 int mjson_print_int(mjson_print_fn_t fn, void *fndata, int value,
                    int is_signed) {
  char buf[20];
  int len = snprintf(buf, sizeof(buf), is_signed ? "%d" : "%u", value);
  return fn(buf, len, fndata);
 }
 int mjson_print_long(mjson_print_fn_t fn, void *fndata, long value,
                     int is_signed) {
  char buf[20];
  const char *fmt = (is_signed ? "%ld" : "%lu");
  int len = snprintf(buf, sizeof(buf), fmt, value);
  return fn(buf, len, fndata);
 }
 int mjson_print_dbl(mjson_print_fn_t fn, void *fndata, double d,
                    const char *fmt) {
  char buf[40];
  int n = snprintf(buf, sizeof(buf), fmt, d);
  return fn(buf, n, fndata);
 }
 int mjson_print_str(mjson_print_fn_t fn, void *fndata, const char *s, int len) {
  int i, n = fn("\"", 1, fndata);
  for (i = 0; i < len; i++) {
    char c = mjson_esc(s[i], 1);
    if (c) {
      n += fn("\\", 1, fndata);
      n += fn(&c, 1, fndata);
    } else {
      n += fn(&s[i], 1, fndata);
    }
  }
  return n + fn("\"", 1, fndata);
 }
 #if MJSON_ENABLE_BASE64
 int mjson_print_b64(mjson_print_fn_t fn, void *fndata, const unsigned char *s,
                    int n) {
  const char *t =
      "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  int i, len = fn("\"", 1, fndata);
  for (i = 0; i < n; i += 3) {
    int a = s[i], b = i + 1 < n ? s[i + 1] : 0, c = i + 2 < n ? s[i + 2] : 0;
    char buf[4] = {t[a >> 2], t[(a & 3) << 4 | (b >> 4)], '=', '='};
    if (i + 1 < n) buf[2] = t[(b & 15) << 2 | (c >> 6)];
    if (i + 2 < n) buf[3] = t[c & 63];
    len += fn(buf, sizeof(buf), fndata);
  }
  return len + fn("\"", 1, fndata);
 }
 #endif /* MJSON_ENABLE_BASE64 */
 int mjson_vprintf(mjson_print_fn_t fn, void *fndata, const char *fmt,
                  va_list xap) {
  int i = 0, n = 0;
  va_list ap;
  va_copy(ap, xap);
  while (fmt[i] != '\0') {
    if (fmt[i] == '%') {
      char fc = fmt[++i];
      int is_long = 0;
      if (fc == 'l') {
        is_long = 1;
        fc = fmt[i + 1];
      }
      if (fc == 'Q') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf ? buf : "", buf ? strlen(buf) : 0);
      } else if (strncmp(&fmt[i], ".*Q", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_str(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'd' || fc == 'u') {
        int is_signed = (fc == 'd');
        if (is_long) {
          long val = va_arg(ap, long);
          n += mjson_print_long(fn, fndata, val, is_signed);
          i++;
        } else {
          int val = va_arg(ap, int);
          n += mjson_print_int(fn, fndata, val, is_signed);
        }
      } else if (fc == 'B') {
        const char *s = va_arg(ap, int) ? "true" : "false";
        n += mjson_print_buf(fn, fndata, s, strlen(s));
      } else if (fc == 's') {
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, strlen(buf));
      } else if (strncmp(&fmt[i], ".*s", 3) == 0) {
        int len = va_arg(ap, int);
        char *buf = va_arg(ap, char *);
        n += mjson_print_buf(fn, fndata, buf, len);
        i += 2;
      } else if (fc == 'g') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%g");
      } else if (fc == 'f') {
        n += mjson_print_dbl(fn, fndata, va_arg(ap, double), "%f");
 #if MJSON_ENABLE_BASE64
      } else if (fc == 'V') {
        int len = va_arg(ap, int);
        const char *buf = va_arg(ap, const char *);
        n += mjson_print_b64(fn, fndata, (unsigned char *) buf, len);
 #endif
      } else if (fc == 'H') {
        const char *hex = "0123456789abcdef";
        int i, len = va_arg(ap, int);
        const unsigned char *p = va_arg(ap, const unsigned char *);
        n += fn("\"", 1, fndata);
        for (i = 0; i < len; i++) {
          n += fn(&hex[(p[i] >> 4) & 15], 1, fndata);
          n += fn(&hex[p[i] & 15], 1, fndata);
        }
        n += fn("\"", 1, fndata);
      } else if (fc == 'M') {
        mjson_vprint_fn_t vfn = va_arg(ap, mjson_vprint_fn_t);
        n += vfn(fn, fndata, &ap);
      }
      i++;
    } else {
      n += mjson_print_buf(fn, fndata, &fmt[i++], 1);
    }
  }
  va_end(xap);
  va_end(ap);
  return n;
 }
 int mjson_printf(mjson_print_fn_t fn, void *fndata, const char *fmt, ...) {
  va_list ap;
  int len;
  va_start(ap, fmt);
  len = mjson_vprintf(fn, fndata, fmt, ap);
  va_end(ap);
  return len;
 }
 #endif /* MJSON_ENABLE_PRINT */
 #if MJSON_IMPLEMENT_STRTOD
 static inline int is_digit(int c) {
  return c >= '0' && c <= '9';
 }
 /* NOTE: strtod() implementation by Yasuhiro Matsumoto. */
 double strtod(const char *str, char **end) {
  double d = 0.0;
  int sign = 1, n = 0;
  const char *p = str, *a = str;
  /* decimal part */
  if (*p == '-') {
    sign = -1;
    ++p;
  } else if (*p == '+')
    ++p;
  if (is_digit(*p)) {
    d = (double) (*p++ - '0');
    while (*p && is_digit(*p)) {
      d = d * 10.0 + (double) (*p - '0');
      ++p;
      ++n;
    }
    a = p;
  } else if (*p != '.')
    goto done;
  d *= sign;
  /* fraction part */
  if (*p == '.') {
    double f = 0.0;
    double base = 0.1;
    ++p;
    if (is_digit(*p)) {
      while (*p && is_digit(*p)) {
        f += base * (*p - '0');
        base /= 10.0;
        ++p;
        ++n;
      }
    }
    d += f * sign;
    a = p;
  }
  /* exponential part */
  if ((*p == 'E') || (*p == 'e')) {
    int e = 0;
    ++p;
    sign = 1;
    if (*p == '-') {
      sign = -1;
      ++p;
    } else if (*p == '+')
      ++p;
    if (is_digit(*p)) {
      while (*p == '0') ++p;
      e = (int) (*p++ - '0');
      while (*p && is_digit(*p)) {
        e = e * 10 + (int) (*p - '0');
        ++p;
      }
      e *= sign;
    } else if (!is_digit(*(a - 1))) {
      a = str;
      goto done;
    } else if (*p == 0)
      goto done;
    if (d == 2.2250738585072011 && e == -308) {
      d = 0.0;
      a = p;
      goto done;
    }
    if (d == 2.2250738585072012 && e <= -308) {
      d *= 1.0e-308;
      a = p;
      goto done;
    }
    {
      int i;
      for (i = 0; i < 10; i++) d *= 10;
    }
    a = p;
  } else if (p > str && !is_digit(*(p - 1))) {
    a = str;
    goto done;
  }
 done:
  if (end) *end = (char *) a;
  return d;
 }
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *s, int n, const char *s2, int n2,
                mjson_print_fn_t fn, void *userdata) {
  int koff, klen, voff, vlen, t, t2, k, off = 0, len = 0, comma = 0;
  if (n < 2) return len;
  len += fn("{", 1, userdata);
  while ((off = mjson_next(s, n, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s + koff + 1, klen - 2);
    path[klen] = '\0';
    if ((t2 = mjson_find(s2, n2, path, &val, &k)) != MJSON_TOK_INVALID) {
      if (t2 == MJSON_TOK_NULL) continue;  // null deletes the key
    } else {
      val = s + voff;  // Key is not found in the update. Copy the old value.
    }
    if (comma) len += fn(",", 1, userdata);
    len += fn(s + koff, klen, userdata);
    len += fn(":", 1, userdata);
    if (t == MJSON_TOK_OBJECT && t2 == MJSON_TOK_OBJECT) {
      len += mjson_merge(s + voff, vlen, val, k, fn, userdata);
    } else {
      if (t2 != MJSON_TOK_INVALID) vlen = k;
      len += fn(val, vlen, userdata);
    }
    comma = 1;
  }
  // Add missing keys
  off = 0;
  while ((off = mjson_next(s2, n2, off, &koff, &klen, &voff, &vlen, &t)) != 0) {
 #if !defined(_MSC_VER) || _MSC_VER >= 1700
    char path[klen + 1];
 #else
    char *path = (char *) alloca(klen + 1);
 #endif
    const char *val;
    if (t == MJSON_TOK_NULL) continue;
    memcpy(path, "$.", 2);
    memcpy(path + 2, s2 + koff + 1, klen - 2);
    path[klen] = '\0';
    if (mjson_find(s, n, path, &val, &vlen) != MJSON_TOK_INVALID) continue;
    if (comma) len += fn(",", 1, userdata);
    len += fn(s2 + koff, klen, userdata);
    len += fn(":", 1, userdata);
    len += fn(s2 + voff, vlen, userdata);
    comma = 1;
  }
  len += fn("}", 1, userdata);
  return len;
 }
 #endif  // MJSON_ENABLE_MERGE
 #if MJSON_ENABLE_PRETTY
 struct prettydata {
  int level;
  int len;
  int prev;
  const char *pad;
  int padlen;
  mjson_print_fn_t fn;
  void *userdata;
 };
 static int pretty_cb(int ev, const char *s, int off, int len, void *ud) {
  struct prettydata *d = (struct prettydata *) ud;
  int i;
  switch (ev) {
    case '{':
    case '[':
      d->level++;
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case '}':
    case ']':
      d->level--;
      if (d->prev != '[' && d->prev != '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    case ',':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      break;
    case ':':
      d->len += d->fn(s + off, len, d->userdata);
      if (d->padlen > 0) d->len += d->fn(" ", 1, d->userdata);
      break;
    case MJSON_TOK_KEY:
      if (d->prev == '{' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
    default:
      if (d->prev == '[' && d->padlen > 0) {
        d->len += d->fn("\n", 1, d->userdata);
        for (i = 0; i < d->level; i++)
          d->len += d->fn(d->pad, d->padlen, d->userdata);
      }
      d->len += d->fn(s + off, len, d->userdata);
      break;
  }
  d->prev = ev;
  return 0;
 }
 int mjson_pretty(const char *s, int n, const char *pad, mjson_print_fn_t fn,
                 void *userdata) {
  struct prettydata d = {0, 0, 0, pad, strlen(pad), fn, userdata};
  if (mjson(s, n, pretty_cb, &d) < 0) return -1;
  return d.len;
 }
 #endif  // MJSON_ENABLE_PRETTY
 #if MJSON_ENABLE_RPC
 struct jsonrpc_ctx jsonrpc_default_context;
 struct jsonrpc_userdata {
  mjson_print_fn_t fn;
  void *fndata;
 };
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2) {
  int i = 0, j = 0, ni = 0, nj = 0;
  while (i < n1 || j < n2) {
    if (i < n1 && j < n2 && (s1[i] == '?' || s2[j] == s1[i])) {
      i++, j++;
    } else if (i < n1 && (s1[i] == '*' || s1[i] == '#')) {
      ni = i, nj = j + 1, i++;
    } else if (nj > 0 && nj <= n2 && (s1[i - 1] == '#' || s2[j] != '/')) {
      i = ni, j = nj;
    } else {
      return 0;
    }
  }
  return 1;
 }
 static int jsonrpc_printer(const char *buf, int len, void *userdata) {
  struct jsonrpc_userdata *u = (struct jsonrpc_userdata *) userdata;
  return u->fn(buf, len, u->fndata);
 }
 void jsonrpc_return_errorv(struct jsonrpc_request *r, int code,
                           const char *message, const char *data_fmt,
                           va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata,
               "{\"id\":%.*s,\"error\":{\"code\":%d,\"message\":%Q", r->id_len,
               r->id, code, message == NULL ? "" : message);
  if (data_fmt != NULL) {
  	mjson_printf(r->fn, r->fndata, ",\"data\":");
    mjson_vprintf(r->fn, r->fndata, data_fmt, ap);
  }
  mjson_printf(r->fn, r->fndata, "}}\n");
 }
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...) {
  va_list ap;
  va_start(ap, data_fmt);
  jsonrpc_return_errorv(r, code, message, data_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_return_successv(struct jsonrpc_request *r, const char *result_fmt,
                             va_list ap) {
  if (r->id_len == 0) return;
  mjson_printf(r->fn, r->fndata, "{\"id\":%.*s,\"result\":", r->id_len, r->id);
  if (result_fmt != NULL) {
    mjson_vprintf(r->fn, r->fndata, result_fmt, ap);
  } else {
    mjson_printf(r->fn, r->fndata, "%s", "null");
  }
  mjson_printf(r->fn, r->fndata, "}\n");
 }
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...) {
  va_list ap;
  va_start(ap, result_fmt);
  jsonrpc_return_successv(r, result_fmt, ap);
  va_end(ap);
 }
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata) {
  const char *result = NULL, *error = NULL;
  int result_sz = 0, error_sz = 0;
  struct jsonrpc_method *m = NULL;
  struct jsonrpc_userdata d;
  struct jsonrpc_request r = {req, req_sz,           0,    0,   0, 0, 0,
                              0,   &jsonrpc_printer, NULL, NULL};
  d.fn = fn;
  d.fndata = fndata;
  r.fndata = &d;
  // Is is a response frame?
  mjson_find(req, req_sz, "$.result", &result, &result_sz);
  if (result == NULL) mjson_find(req, req_sz, "$.error", &error, &error_sz);
  if (result_sz > 0 || error_sz > 0) {
    if (ctx->response_cb != NULL) ctx->response_cb(req, req_sz, ctx->userdata);
    return;
  }
  // Method must exist and must be a string
  if (mjson_find(req, req_sz, "$.method", &r.method, &r.method_len) !=
      MJSON_TOK_STRING) {
    mjson_printf(fn, fndata, "{\"error\":{\"code\":-32700,\"message\":%.*Q}}\n",
                 req_sz, req);
    ctx->in_len = 0;
    return;
  }
  // id and params are optional
  mjson_find(req, req_sz, "$.id", &r.id, &r.id_len);
  mjson_find(req, req_sz, "$.params", &r.params, &r.params_len);
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (mjson_globmatch(m->method, m->method_sz, r.method + 1,
                        r.method_len - 2) > 0) {
      if (r.params == NULL) r.params = "";
      r.userdata = m->cbdata;
      m->cb(&r);
      break;
    }
  }
  if (m == NULL) {
    jsonrpc_return_error(&r, JSONRPC_ERROR_NOT_FOUND, "method not found", NULL);
  }
 }
 static int jsonrpc_print_methods(mjson_print_fn_t fn, void *fndata,
                                 va_list *ap) {
  struct jsonrpc_ctx *ctx = va_arg(*ap, struct jsonrpc_ctx *);
  struct jsonrpc_method *m;
  int len = 0;
  for (m = ctx->methods; m != NULL; m = m->next) {
    if (m != ctx->methods) len += mjson_print_buf(fn, fndata, ",", 1);
    len += mjson_print_str(fn, fndata, m->method, strlen(m->method));
  }
  return len;
 }
 static void rpclist(struct jsonrpc_request *r) {
  jsonrpc_return_success(r, "[%M]", jsonrpc_print_methods, r->userdata);
 }
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t response_cb,
                      void *userdata) {
  ctx->response_cb = response_cb;
  ctx->userdata = userdata;
  jsonrpc_ctx_export(ctx, MJSON_RPC_LIST_NAME, rpclist, ctx);
 }
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *p) {
  if (ctx->in_len >= (int) sizeof(ctx->in)) ctx->in_len = 0;  // Overflow
  if (ch == '\n') {  // If new line, parse frame
    if (ctx->in_len > 1) jsonrpc_ctx_process(ctx, ctx->in, ctx->in_len, fn, p);
    ctx->in_len = 0;
  } else {
    ctx->in[ctx->in_len] = ch;  // Append to the buffer
    ctx->in_len++;
  }
 }
 void jsonrpc_init(mjson_print_fn_t response_cb, void *userdata) {
  jsonrpc_ctx_init(&jsonrpc_default_context, response_cb, userdata);
 }
 #endif  // MJSON_ENABLE_RPC
@@ -0,0 +1,220 @@
 // Copyright (c) 2018-2020 Cesanta Software Limited
 // All rights reserved
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
 // in the Software without restriction, including without limitation the rights
 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 // copies of the Software, and to permit persons to whom the Software is
 // furnished to do so, subject to the following conditions:
 //
 // The above copyright notice and this permission notice shall be included in
 // all copies or substantial portions of the Software.
 //
 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 // SOFTWARE.
 #ifndef MJSON_H
 #define MJSON_H
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #ifndef MJSON_ENABLE_PRINT
 #define MJSON_ENABLE_PRINT 1
 #endif
 #ifndef MJSON_ENABLE_RPC
 #define MJSON_ENABLE_RPC 1
 #endif
 #ifndef MJSON_ENABLE_BASE64
 #define MJSON_ENABLE_BASE64 1
 #endif
 #ifndef MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_MERGE 0
 #elif MJSON_ENABLE_MERGE
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_PRETTY 0
 #elif MJSON_ENABLE_PRETTY
 #define MJSON_ENABLE_NEXT 1
 #endif
 #ifndef MJSON_ENABLE_NEXT
 #define MJSON_ENABLE_NEXT 0
 #endif
 #ifndef MJSON_RPC_IN_BUF_SIZE
 #define MJSON_RPC_IN_BUF_SIZE 256
 #endif
 #ifndef MJSON_RPC_LIST_NAME
 #define MJSON_RPC_LIST_NAME "rpc.list"
 #endif
 #ifdef __cplusplus
 extern "C" {
 #endif
 enum {
  MJSON_ERROR_INVALID_INPUT = -1,
  MJSON_ERROR_TOO_DEEP = -2,
 };
 enum mjson_tok {
  MJSON_TOK_INVALID = 0,
  MJSON_TOK_KEY = 1,
  MJSON_TOK_STRING = 11,
  MJSON_TOK_NUMBER = 12,
  MJSON_TOK_TRUE = 13,
  MJSON_TOK_FALSE = 14,
  MJSON_TOK_NULL = 15,
  MJSON_TOK_ARRAY = 91,
  MJSON_TOK_OBJECT = 123,
 };
 #define MJSON_TOK_IS_VALUE(t) ((t) > 10 && (t) < 20)
 typedef int (*mjson_cb_t)(int ev, const char *s, int off, int len, void *ud);
 #ifndef MJSON_MAX_DEPTH
 #define MJSON_MAX_DEPTH 20
 #endif
 int mjson(const char *s, int len, mjson_cb_t cb, void *ud);
 enum mjson_tok mjson_find(const char *s, int len, const char *jp,
                          const char **tokptr, int *toklen);
 int mjson_get_number(const char *s, int len, const char *path, double *v);
 int mjson_get_bool(const char *s, int len, const char *path, int *v);
 int mjson_get_string(const char *s, int len, const char *path, char *to, int n);
 int mjson_get_hex(const char *s, int len, const char *path, char *to, int n);
 #if MJSON_ENABLE_NEXT
 int mjson_next(const char *s, int n, int off, int *koff, int *klen, int *voff,
               int *vlen, int *vtype);
 #endif
 #if MJSON_ENABLE_BASE64
 int mjson_get_base64(const char *s, int len, const char *path, char *to, int n);
 int mjson_base64_dec(const char *src, int n, char *dst, int dlen);
 #endif
 #if MJSON_ENABLE_PRINT
 typedef int (*mjson_print_fn_t)(const char *buf, int len, void *userdata);
 typedef int (*mjson_vprint_fn_t)(mjson_print_fn_t, void *, va_list *);
 struct mjson_fixedbuf {
  char *ptr;
  int size, len;
 };
 int mjson_printf(mjson_print_fn_t, void *, const char *fmt, ...);
 int mjson_vprintf(mjson_print_fn_t, void *, const char *fmt, va_list ap);
 int mjson_print_str(mjson_print_fn_t, void *, const char *s, int len);
 int mjson_print_int(mjson_print_fn_t, void *, int value, int is_signed);
 int mjson_print_long(mjson_print_fn_t, void *, long value, int is_signed);
 int mjson_print_buf(mjson_print_fn_t fn, void *, const char *buf, int len);
 int mjson_print_null(const char *ptr, int len, void *userdata);
 int mjson_print_file(const char *ptr, int len, void *userdata);
 int mjson_print_fixed_buf(const char *ptr, int len, void *userdata);
 int mjson_print_dynamic_buf(const char *ptr, int len, void *userdata);
 #if MJSON_ENABLE_PRETTY
 int mjson_pretty(const char *, int, const char *, mjson_print_fn_t, void *);
 #endif
 #if MJSON_ENABLE_MERGE
 int mjson_merge(const char *, int, const char *, int, mjson_print_fn_t, void *);
 #endif
 #endif  // MJSON_ENABLE_PRINT
 #if MJSON_ENABLE_RPC
 void jsonrpc_init(mjson_print_fn_t, void *userdata);
 int mjson_globmatch(const char *s1, int n1, const char *s2, int n2);
 struct jsonrpc_request {
  const char *frame;    // Points to the whole frame
  int frame_len;        // Frame length
  const char *params;   // Points to the "params" in the request frame
  int params_len;       // Length of the "params"
  const char *id;       // Points to the "id" in the request frame
  int id_len;           // Length of the "id"
  const char *method;   // Points to the "method" in the request frame
  int method_len;       // Length of the "method"
  mjson_print_fn_t fn;  // Printer function
  void *fndata;         // Printer function data
  void *userdata;       // Callback's user data as specified at export time
 };
 struct jsonrpc_method {
  const char *method;
  int method_sz;
  void (*cb)(struct jsonrpc_request *);
  void *cbdata;
  struct jsonrpc_method *next;
 };
 // Main RPC context, stores current request information and a list of
 // exported RPC methods.
 struct jsonrpc_ctx {
  struct jsonrpc_method *methods;
  void *userdata;
  mjson_print_fn_t response_cb;
  int in_len;
  char in[MJSON_RPC_IN_BUF_SIZE];
 };
 // Registers function fn under the given name within the given RPC context
 #define jsonrpc_ctx_export(ctx, name, fn, ud)                                \
  do {                                                                       \
    static struct jsonrpc_method m = {(name), sizeof(name) - 1, (fn), 0, 0}; \
    m.cbdata = (ud);                                                         \
    m.next = (ctx)->methods;                                                 \
    (ctx)->methods = &m;                                                     \
  } while (0)
 void jsonrpc_ctx_init(struct jsonrpc_ctx *ctx, mjson_print_fn_t, void *);
 void jsonrpc_return_error(struct jsonrpc_request *r, int code,
                          const char *message, const char *data_fmt, ...);
 void jsonrpc_return_success(struct jsonrpc_request *r, const char *result_fmt,
                            ...);
 void jsonrpc_ctx_process(struct jsonrpc_ctx *ctx, const char *req, int req_sz,
                         mjson_print_fn_t fn, void *fndata);
 void jsonrpc_ctx_process_byte(struct jsonrpc_ctx *ctx, unsigned char ch,
                              mjson_print_fn_t fn, void *fndata);
 extern struct jsonrpc_ctx jsonrpc_default_context;
 #define jsonrpc_export(name, fn, ud) \
  jsonrpc_ctx_export(&jsonrpc_default_context, (name), (fn), (ud))
 #define jsonrpc_process(buf, len, fn, data) \
  jsonrpc_ctx_process(&jsonrpc_default_context, (buf), (len), (fn), (data))
 #define jsonrpc_process_byte(x, fn, data) \
  jsonrpc_ctx_process_byte(&jsonrpc_default_context, (x), (fn), (data))
 #define JSONRPC_ERROR_INVALID -32700    /* Invalid JSON was received */
 #define JSONRPC_ERROR_NOT_FOUND -32601  /* The method does not exist */
 #define JSONRPC_ERROR_BAD_PARAMS -32602 /* Invalid params passed */
 #define JSONRPC_ERROR_INTERNAL -32603   /* Internal JSON-RPC error */
 #endif  // MJSON_ENABLE_RPC
 #ifdef __cplusplus
 }
 #endif
 #endif  // MJSON_H
@@ -0,0 +1,76 @@
 const {h, render, Component} = preact;
 const html = htm.bind(h);
 const Info = () => html`<div id="info">
  This dashboard shows values kept in server memory. Many clients
  can open this page. As soon as any client changes any value,
  all clients update automatically.
  <br/><br/>
  The JS code that watches state changes, reconnects on network failures.
  That means if server restarts, dashboard on all connected clients
  refresh automatically.
  <br/><br/>
  You can use <code>curl</code> command-line utility:
  <br/><code>curl localhost:8000/api/config/get</code>
  <br/><code>curl localhost:8000/api/config/watch</code>
  <br/><code>curl localhost:8000/api/config/set -d '{"a":123}'</code>
 </div>`;
 class Dashboard extends Component {
  state = {value1: null, value2: null};
  componentDidMount() {
    axios.get('/api/config/get')
        .then(r => this.setState(r.data))
        .catch(e => console.log(e));
    var self = this;
    var f = function(reader) {
      return reader.read().then(function(result) {
        var data = String.fromCharCode.apply(null, result.value);
        self.setState(JSON.parse(data));
        // console.log(JSON.parse(data));
        if (!result.done) return f(reader);
      });
    };
    fetch('/api/config/watch')
        .then(r => r.body.getReader())
        .then(f)
        .catch(e => setTimeout(x => self.componentDidMount(), 1000));
  }
  render(props, state) {
    return html
    `<div id="dashboard" style="display: flex; justify-content: flex-evenly;">
        <div style="width:50%;text-align:center;">Value 1 (number):
          <div style="font-size:140%;"><b>${state.value1}</b></div></div>
        <div style="width:50%;text-align:center;">Value 2 (string):
          <div style="font-size:140%;"><b>${state.value2}</b></div></div>
    </div>`
  }
 };
 class Form extends Component {
  render(props, state) {
    const onclick = ev => axios.post(
        '/api/config/set', {value1: +state.value1, value2: state.value2});
    // alert(JSON.stringify(state));
    return html`<div id="form">
      <div><b>Change values</b></div>
      <table>
        <tr><td>Value 1 (number):</td><td><input value=${state.value1}
          onInput=${linkState(this, 'value1')} /></td></tr>
        <tr><td>Value 2 (string):</td><td><input value=${state.value2}
            onInput=${linkState(this, 'value2')}/></td></tr>
        <tr><td></td>
          <td><button onClick=${onclick}>Save values</button></td></tr>
      </table>
    </div>`
  }
 };
 const App = () => html`<div id="container">
  <${Info} />
  <${Dashboard} />
  <${Form} />
 </div>`;
 window.onload = () => render(h(App), document.body);
@@ -0,0 +1,3 @@
 /* axios v0.21.1 | (c) 2020 by Matt Zabriskie */
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@@ -0,0 +1,16 @@
 <!DOCTYPE html>
 <html lang="en">
  <head>
    <title>example</title>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="style.css" />
    <script src="preact.min.js"></script>
    <script src="htm.min.js"></script>
    <script src="linkstate.min.js"></script>
    <script src="axios.min.js"></script>
    <script src="app.js"></script>
  </head>
  <body></body>
 </html>
@@ -0,0 +1,18 @@
 function linkState(component, key, eventPath) {
  let path = key.split('.'), cache = component.__lsc || (component.__lsc = {});
  return cache[key + eventPath] || (cache[key + eventPath] = function(e) {
           let t = e && e.target || this, state = {}, obj = state,
               v = typeof eventPath === 'string' ?
               delve(e, eventPath) :
               t.nodeName ? (t.type.match(/^che|rad/) ? t.checked : t.value) :
                            e,
               i = 0;
           for (; i < path.length - 1; i++) {
             obj = obj[path[i]] ||
                 (obj[path[i]] = !i && component.state[path[i]] || {});
           }
           obj[path[i]] = v;
           component.setState(state);
         });
 }
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@@ -0,0 +1,6 @@
 #container { margin-right: auto; margin-left: auto; max-width: 480px; }
 #info { background: #d0f0f0; border-radius: .5em; padding: 2em;  }
 #dashboard { background: #f0f0f0; border-radius: .5em; padding: 0.5em; max-height: 10em; overflow: auto; height: 100%; margin-top: 1em; }
 #form { background: #d0c0f0; border-radius: .5em; padding: 0.5em; max-height: 10em; overflow: auto; height: 100%; margin-top: 1em; }
 button { width: 100%; }
 button, select, input, label::before, textarea { outline: none; box-shadow:none !important; border: 1px solid #ccc !important; }
@@ -1,12 +0,0 @@
 # Copyright (c) 2014 Cesanta Software
 # All rights reserved
 PROG = digest_auth
 CFLAGS = -W -Wall -I../.. -pthread -g -O0 $(CFLAGS_EXTRA)
 SOURCES = $(PROG).c ../../mongoose.c
 $(PROG): $(SOURCES)
 	$(CC) -o $(PROG) $(SOURCES) $(CFLAGS)
 clean:
 	rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib
@@ -1,36 +0,0 @@
 #include <stdio.h>
 #include <string.h>
 #include "mongoose.h"
 static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
  if (ev == MG_AUTH) {
    int result = MG_FALSE; // Not authorized
    FILE *fp;
    // To populate passwords file, do
    // mongoose -A my_passwords.txt mydomain.com admin admin
    if ((fp = fopen("my_passwords.txt", "r")) != NULL) {
      result = mg_authorize_digest(conn, fp);
      fclose(fp);
    }
    return result;
  }
  return MG_FALSE;
 }
 int main(void) {
  struct mg_server *server = mg_create_server(NULL, ev_handler);
  mg_set_option(server, "listening_port", "8080");
  mg_set_option(server, "document_root", ".");
  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
  for (;;) {
    mg_poll_server(server, 1000);
  }
  mg_destroy_server(&server);
  return 0;
 }
@@ -0,0 +1,6 @@
 # The following lines of boilerplate have to be in your project's
 # CMakeLists in this exact order for cmake to work correctly
 cmake_minimum_required(VERSION 3.5)
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
 project(mongoose-esp32-example)
@@ -0,0 +1,15 @@
 THISDIR = $(realpath $(CURDIR))
 ROOTDIR = $(realpath $(CURDIR)/../..)
 all: example
 example: main/main.c Makefile
 	docker run --rm -v $(ROOTDIR):$(ROOTDIR) -w $(THISDIR) espressif/idf idf.py build
 COMPORT ?= /dev/cu.SLAB_USBtoUART
 ESPTOOL ?= esptool.py
 flash:
 	cd build && $(ESPTOOL) --chip esp32 -p $(COMPORT) -b 460800 --before=default_reset --after=hard_reset write_flash --flash_mode dio --flash_freq 40m --flash_size 2MB 0x8000 partition_table/partition-table.bin 0x1000 bootloader/bootloader.bin 0x100000 mongoose-esp32-example.bin
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb mongoose mongoose_* mongoose.* build sdkconfig
@@ -0,0 +1,28 @@
 # An example ESP32 application
 To build this application, follow these steps:
 1. Make sure you have Docker installed
 2. Clone whole mongoose repository on your machine:
  ```sh
  git clone --depth 1 https://github.com/cesanta/mongoose.git
  ```
 3. Start command line or terminal, and go into the example's directory:
  ```sh
  cd mongoose/examples/esp32
  ```
 4. Run `make`. This invokes a Docker-based build. A firmware will be built
  in the `build/` directory:
  ```sh
  make
  ```
 # Flashing built firmware
 If you have a real board to flash to, you can flash a built firmware.
 First, make sure to have `esptool.py` script installed on your workstation.
 Then, connect the board to your workstation and run the following command:
 ```sh
 make flash COMPORT=YOUR_USB_PORT
 ```
@@ -0,0 +1,5 @@
 idf_component_register(SRCS "main.c"
                            "wifi.c"
                            "../../../mongoose.c"
                       INCLUDE_DIRS "../../..")
 component_compile_options(-DMG_ENABLE_DIRECTORY_LISTING=1 -DMG_ENABLE_LINES)
@@ -0,0 +1,53 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "esp_spiffs.h"
 #include "freertos/FreeRTOS.h"
 #include "mongoose.h"
 #define WIFI_SSID "WIFI_NETWORK"   // SET THIS!
 #define WIFI_PASS "WIFI_PASSWORD"  // SET THIS!
 #define FS_ROOT "/spiffs"
 // Event handler for an server (accepted) connection. Implemented endpoints:
 //    /api/stats  - return JSON object with ESP32 stats (free RAM)
 //    any other   - serve files from the filesystem
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = ev_data;
    if (mg_http_match_uri(hm, "/api/stats")) {
      mg_http_reply(c, 200, "", "{\"ram\": %lu}\n", xPortGetFreeHeapSize());
    } else {
      struct mg_http_serve_opts opts = {.root_dir = FS_ROOT};
      mg_http_serve_dir(c, hm, &opts);
    }
  }
 }
 // SPIFFS is flat, so tell Mongoose that the FS root is a directory
 // This cludge is not required for filesystems with directory support
 bool mg_is_dir(const char *path) {
  return strcmp(path, FS_ROOT) == 0;
 }
 void app_main(void) {
  // Mount filesystem
  esp_vfs_spiffs_conf_t conf = {
      .base_path = FS_ROOT, .max_files = 20, .format_if_mount_failed = true};
  int res = esp_vfs_spiffs_register(&conf);
  LOG(res == ESP_OK ? LL_INFO : LL_ERROR, ("FS %s, %d", conf.base_path, res));
  mg_file_printf(FS_ROOT "/hello.txt", "%s", "hello from ESP");
  // Setup wifi. This function is implemented in wifi.c
  // It blocks until connected to the configured WiFi network
  void wifi_init(const char *ssid, const char *pass);
  wifi_init(WIFI_SSID, WIFI_PASS);
  // Connected to WiFi, now start HTTP server
  struct mg_mgr mgr;
  mg_log_set("3");
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, "http://0.0.0.0:80", cb, &mgr);  // Listening server
  LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
  for (;;) mg_mgr_poll(&mgr, 1000);  // Infinite event loop
 }
@@ -0,0 +1,104 @@
 // Code taken from the ESP32 IDF WiFi station Example
 #include <string.h>
 #include "esp_event.h"
 #include "esp_log.h"
 #include "esp_system.h"
 #include "esp_wifi.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/event_groups.h"
 #include "freertos/task.h"
 #include "nvs_flash.h"
 #include "lwip/err.h"
 #include "lwip/sys.h"
 #include "mongoose.h"
 static EventGroupHandle_t s_wifi_event_group;
 /* The event group allows multiple bits for each event, but we only care about
 * two events:
 * - we are connected to the AP with an IP
 * - we failed to connect after the maximum amount of retries */
 #define WIFI_CONNECTED_BIT BIT0
 #define WIFI_FAIL_BIT BIT1
 static int s_retry_num = 0;
 static void event_handler(void *arg, esp_event_base_t event_base,
                          int32_t event_id, void *event_data) {
  if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
    esp_wifi_connect();
  } else if (event_base == WIFI_EVENT &&
             event_id == WIFI_EVENT_STA_DISCONNECTED) {
    if (s_retry_num < 3) {
      esp_wifi_connect();
      s_retry_num++;
      LOG(LL_INFO, ("retry to connect to the AP"));
    } else {
      xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
    }
    LOG(LL_ERROR, ("connect to the AP fail"));
  } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
    ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data;
    LOG(LL_INFO, ("got ip:" IPSTR, IP2STR(&event->ip_info.ip)));
    s_retry_num = 0;
    xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
  }
 }
 void wifi_init(const char *ssid, const char *pass) {
  esp_err_t ret = nvs_flash_init();
  if (ret == ESP_ERR_NVS_NO_FREE_PAGES ||
      ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
    ESP_ERROR_CHECK(nvs_flash_erase());
    ret = nvs_flash_init();
  }
  ESP_ERROR_CHECK(ret);
  s_wifi_event_group = xEventGroupCreate();
  ESP_ERROR_CHECK(esp_netif_init());
  ESP_ERROR_CHECK(esp_event_loop_create_default());
  esp_netif_create_default_wifi_sta();
  wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
  ESP_ERROR_CHECK(esp_wifi_init(&cfg));
  esp_event_handler_instance_t instance_any_id;
  esp_event_handler_instance_t instance_got_ip;
  ESP_ERROR_CHECK(esp_event_handler_instance_register(
      WIFI_EVENT, ESP_EVENT_ANY_ID, &event_handler, NULL, &instance_any_id));
  ESP_ERROR_CHECK(esp_event_handler_instance_register(
      IP_EVENT, IP_EVENT_STA_GOT_IP, &event_handler, NULL, &instance_got_ip));
  wifi_config_t c = {.sta = {.threshold = {.authmode = WIFI_AUTH_WPA2_PSK},
                             .pmf_cfg = {.capable = true, .required = false}}};
  snprintf((char *) c.sta.ssid, sizeof(c.sta.ssid), "%s", ssid);
  snprintf((char *) c.sta.password, sizeof(c.sta.password), "%s", pass);
  ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
  ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &c));
  ESP_ERROR_CHECK(esp_wifi_start());
  LOG(LL_DEBUG, ("wifi_init_sta finished."));
  EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
                                         WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
                                         pdFALSE, pdFALSE, portMAX_DELAY);
  if (bits & WIFI_CONNECTED_BIT) {
    LOG(LL_INFO, ("connected to ap SSID:%s password:%s", ssid, pass));
  } else if (bits & WIFI_FAIL_BIT) {
    LOG(LL_ERROR, ("Failed to connect to SSID:%s, password:%s", ssid, pass));
  } else {
    LOG(LL_ERROR, ("UNEXPECTED EVENT"));
  }
  /* The event will not be processed after unregister */
  ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
      IP_EVENT, IP_EVENT_STA_GOT_IP, instance_got_ip));
  ESP_ERROR_CHECK(esp_event_handler_instance_unregister(
      WIFI_EVENT, ESP_EVENT_ANY_ID, instance_any_id));
  vEventGroupDelete(s_wifi_event_group);
 }
@@ -0,0 +1,5 @@
 # Name,   Type, SubType, Offset,  Size, Flags
 nvs,      data, nvs,     0x9000,  0x6000,
 phy_init, data, phy,     0xf000,  0x1000,
 storage,  data, spiffs,  0x10000, 0x10000,
 factory,  app,  factory, 0x100000, 1M,
@@ -0,0 +1,3 @@
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions.csv"
 CONFIG_PARTITION_TABLE_FILENAME="partitions.csv"
@@ -0,0 +1,10 @@
 THISDIR = $(realpath $(CURDIR))
 ROOTDIR = $(realpath $(CURDIR)/../..)
 all: example
 example: src/main/main.c src/main/wifi.c Makefile
 	docker run --rm -v $(ROOTDIR):$(ROOTDIR) -w $(THISDIR) docker.io/mdashnet/8266 make -C src defconfig app
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb mongoose mongoose_* mongoose.* src/build src/sdkconfig
@@ -0,0 +1,18 @@
 # An example ESP8266 application
 To build this application, follow these steps:
 1. Make sure you have Docker installed
 2. Clone whole mongoose repository on your machine:
  ```sh
  git clone https://github.com/cesanta/mongoose.git
  ```
 3. Start command line or terminal, and go into the example's directory:
  ```sh
  cd mongoose/examples/esp8266
  ```
 4. Run `make`. This invokes a Docker-based build. A firmware will be built
  in the `src/build/` directory:
  ```sh
  make example
  ```
@@ -0,0 +1,9 @@
 #
 # This is a project Makefile. It is assumed the directory this Makefile resides in is a
 # project subdirectory.
 #
 PROJECT_NAME := mongoose-example
 include $(IDF_PATH)/make/project.mk
@@ -0,0 +1,10 @@
  #
  # Main component makefile.
  #
  # This Makefile can be left empty. By default, it will take the sources in the 
  # src/ directory, compile them and link them into lib(subdirectory_name).a 
  # in the build directory. This behaviour is entirely configurable,
  # please read the ESP-IDF documents if you need to do this.
 #
 COMPONENT_INCLUDES += ../../../../..
@@ -0,0 +1,54 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "mongoose.h"
 #define WIFI_SSID "WIFI_NETWORK"   // SET THIS!
 #define WIFI_PASS "WIFI_PASSWORD"  // SET THIS!
 #define SERVER_URL "http://0.0.0.0:80"
 #define CLIENT_URL "http://info.cern.ch"
 // Event handler for an server (accepted) connection
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    mg_http_reply(c, 200, "", "Hello from ESP!\n");
  }
 }
 // Event handler for a client connection - fetch the first web page in history
 // To enable TLS for HTTP,
 //   1. Copy "ca.pem" file to the ESP32 flash FS
 //   2. Add TLS init snippet for the connection, see examples/http-client
 static void cb2(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_CONNECT) {
    struct mg_str s = mg_url_host(CLIENT_URL);
    mg_printf(c, "GET / HTTP/1.0\r\nHost: %.*s\r\n\r\n", (int) s.len, s.ptr);
  } else if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = ev_data;  // Print HTTP response
    LOG(LL_INFO, ("Fetched:\n%.*s", (int) hm->message.len, hm->message.ptr));
    c->is_closing = 1;
  }
 }
 // Called after we're connected to WiFi network
 static void run_mongoose(void) {
  struct mg_mgr mgr;
  mg_log_set("3");
  mg_mgr_init(&mgr);
  mg_http_listen(&mgr, SERVER_URL, cb, &mgr);    // Listening server
  mg_http_connect(&mgr, CLIENT_URL, cb2, &mgr);  // Example client
  LOG(LL_INFO, ("Starting Mongoose web server v%s", MG_VERSION));
  for (;;) mg_mgr_poll(&mgr, 1000);
  mg_mgr_free(&mgr);
 }
 void app_main(void) {
  // Setup wifi. This function is implemented in wifi.c
  // It blocks until connected to the configured WiFi network
  void wifi_init(const char *ssid, const char *pass);
  wifi_init(WIFI_SSID, WIFI_PASS);
  // Done connecting to WiFi, now start HTTP server
  run_mongoose();
 }
@@ -0,0 +1 @@
 ../../../../mongoose.c
@@ -0,0 +1,86 @@
 #include <string.h>
 #include "esp_event.h"
 #include "esp_log.h"
 #include "esp_system.h"
 #include "esp_wifi.h"
 #include "freertos/FreeRTOS.h"
 #include "freertos/event_groups.h"
 #include "freertos/task.h"
 #include "nvs_flash.h"
 #include "lwip/err.h"
 #include "lwip/sys.h"
 #include "mongoose.h"
 static EventGroupHandle_t s_wifi_event_group;
 /* The event group allows multiple bits for each event, but we only care about
 * two events:
 * - we are connected to the AP with an IP
 * - we failed to connect after the maximum amount of retries */
 #define WIFI_CONNECTED_BIT BIT0
 #define WIFI_FAIL_BIT BIT1
 static int s_retry_num = 0;
 static void event_handler(void *arg, esp_event_base_t event_base,
                          int32_t event_id, void *event_data) {
  if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
    esp_wifi_connect();
  } else if (event_base == WIFI_EVENT &&
             event_id == WIFI_EVENT_STA_DISCONNECTED) {
    if (s_retry_num < 3) {
      esp_wifi_connect();
      s_retry_num++;
      LOG(LL_DEBUG, ("retry to connect to the AP"));
    } else {
      xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
    }
    LOG(LL_ERROR, ("connect to the AP fail"));
  } else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
    ip_event_got_ip_t *event = (ip_event_got_ip_t *) event_data;
    LOG(LL_INFO, ("got ip:%s", ip4addr_ntoa(&event->ip_info.ip)));
    s_retry_num = 0;
    xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
  }
 }
 void wifi_init(const char *ssid, const char *pass) {
  s_wifi_event_group = xEventGroupCreate();
  tcpip_adapter_init();
  ESP_ERROR_CHECK(esp_event_loop_create_default());
  wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
  ESP_ERROR_CHECK(esp_wifi_init(&cfg));
  ESP_ERROR_CHECK(esp_event_handler_register(WIFI_EVENT, ESP_EVENT_ANY_ID,
                                             &event_handler, NULL));
  ESP_ERROR_CHECK(esp_event_handler_register(IP_EVENT, IP_EVENT_STA_GOT_IP,
                                             &event_handler, NULL));
  wifi_config_t c = {};
  snprintf((char *) c.sta.ssid, sizeof(c.sta.ssid), "%s", ssid);
  snprintf((char *) c.sta.password, sizeof(c.sta.password), "%s", pass);
  if (pass != NULL && pass[0] != '\0') {
    c.sta.threshold.authmode = WIFI_AUTH_WPA2_PSK;
  }
  ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA));
  ESP_ERROR_CHECK(esp_wifi_set_config(ESP_IF_WIFI_STA, &c));
  ESP_ERROR_CHECK(esp_wifi_start());
  EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
                                         WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
                                         pdFALSE, pdFALSE, portMAX_DELAY);
  if (bits & WIFI_CONNECTED_BIT) {
    LOG(LL_INFO, ("connected to ap SSID:%s password:%s", ssid, pass));
  } else if (bits & WIFI_FAIL_BIT) {
    LOG(LL_ERROR, ("Failed to connect to SSID:%s, password:%s", ssid, pass));
  } else {
    LOG(LL_ERROR, ("UNEXPECTED EVENT"));
  }
  ESP_ERROR_CHECK(esp_event_handler_unregister(IP_EVENT, IP_EVENT_STA_GOT_IP,
                                               &event_handler));
  ESP_ERROR_CHECK(esp_event_handler_unregister(WIFI_EVENT, ESP_EVENT_ANY_ID,
                                               &event_handler));
  vEventGroupDelete(s_wifi_event_group);
 }
@@ -0,0 +1,10 @@
 PROG ?= example
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG)
 $(PROG):
 	$(CC) ../../mongoose.c -I../.. $(CFLAGS) $(EXTRA) -o $(PROG) main.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb log.txt
@@ -0,0 +1,33 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 #include "mongoose.h"
 // HTTP request handler function. It implements the following endpoints:
 //   /upload - Saves the next file chunk
 //   all other URI - serves web_root/ directory
 static void cb(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    if (mg_http_match_uri(hm, "/upload")) {
      mg_http_upload(c, hm, "/tmp");
    } else {
      struct mg_http_serve_opts opts = {.root_dir = "web_root"};
      mg_http_serve_dir(c, ev_data, &opts);
    }
  }
 }
 int main(void) {
  struct mg_mgr mgr;
  struct mg_timer t1;
  mg_mgr_init(&mgr);
  mg_log_set("3");
  mg_http_listen(&mgr, "http://localhost:8000", cb, NULL);
  for (;;) mg_mgr_poll(&mgr, 50);
  mg_mgr_free(&mgr);
  return 0;
 }
@@ -0,0 +1,41 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 // Helper function to display upload status
 var setStatus = function(text) {
  document.getElementById('el3').innerText = text;
 };
 // When user clicks on a button, trigger file selection dialog
 var button = document.getElementById('el2');
 button.onclick = function(ev) {
  input.click();
 };
 // Send a large blob of data chunk by chunk
 var sendFileData = function(name, data, chunkSize) {
  var sendChunk = function(offset) {
    var chunk = data.subarray(offset, offset + chunkSize) || '';
    var opts = {method: 'POST', body: chunk};
    var url = '/upload?offset=' + offset + '&name=' + encodeURIComponent(name);
    setStatus(
        'sending bytes ' + offset + '..' + (offset + chunk.length) + ' of ' +
        data.length);
    fetch(url, opts).then(function(res) {
      if (chunk.length > 0) sendChunk(offset + chunk.length);
    });
  };
  sendChunk(0);
 };
 // If user selected a file, read it into memory and trigger sendFileData()
 var input = document.getElementById('el1');
 input.onchange = function(ev) {
  if (!ev.target.files[0]) return;
  var f = ev.target.files[0], r = new FileReader();
  r.readAsArrayBuffer(f);
  r.onload = function() {
    ev.target.value = '';
    sendFileData(f.name, new Uint8Array(r.result), 4096);
  };
 };
@@ -0,0 +1,36 @@
 <!DOCTYPE html>
 <html lang="en">
  <head>
    <title>example</title>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <style>
      #container { margin-right: auto; margin-left: auto; max-width: 480px; }
      #info { background: #e0f0f0; border-radius: .5em; padding: 2em;  }
      #wrapper { margin-top: 1em; }
    </style>
  </head>
  <body>
    <div id="container">
      <div id="info">
        Mongoose always buffers a full HTTP message before invoking
        MG_EV_HTTP_MSG event. Big POST request require of lot
        of RAM to buffer everything. Therefore, in order to upload large
        files on memory-constrained system, a large file should be send
        in small chunks.
        <br/><br/>
        In this example, JavaScript code on this page sends uploaded
        file in 2k chunks using an <code>/upload</code> endpoint.
        Uploaded file is stored in <code>/tmp</code> directory by the helper
 				API function <code>mg_http_upload()</code>
      </div>
      <div id="wrapper">
        <input type="file" id="el1" style="display: none"/>
        <button id="el2">choose file...</button>
        <div id="el3"></div>
      </div>
    </div>
  </body>
  <script src="app.js"></script>
 </html>
@@ -1,20 +0,0 @@
 # Copyright (c) 2014 Cesanta Software
 # All rights reserved
 PROG = file_upload
 CFLAGS = -W -Wall -I../.. -pthread -g -O0 $(CFLAGS_EXTRA)
 SOURCES = $(PROG).c ../../mongoose.c
 all: $(PROG)
 run: $(PROG)
 	./$(PROG)
 $(PROG): $(SOURCES) Makefile
 	$(CC) -o $(PROG) $(SOURCES) $(CFLAGS)
 win:
 	wine cl $(SOURCES) /MD /nologo /DNDEBUG /O1 /I../.. /Fe$(PROG).exe
 clean:
 	rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib *.gc*
@@ -1,59 +0,0 @@
 // Copyright (c) 2004-2012 Sergey Lyubka
 // This file is a part of mongoose project, http://github.com/valenok/mongoose
 #include <stdio.h>
 #include <string.h>
 #include "mongoose.h"
 static int send_index_page(struct mg_connection *conn) {
  const char *data;
  int data_len, ofs = 0;
  char var_name[100], file_name[100];
  mg_printf_data(conn, "%s",
                 "<html><body>Upload example."
                 "<form method=\"POST\" action=\"/handle_post_request\" "
                 "  enctype=\"multipart/form-data\">"
                 "<input type=\"file\" name=\"file\" /> <br/>"
                 "<input type=\"submit\" value=\"Upload\" />"
                 "</form>");
  while ((ofs = mg_parse_multipart(conn->content + ofs, conn->content_len - ofs,
                                   var_name, sizeof(var_name),
                                   file_name, sizeof(file_name),
                                   &data, &data_len)) > 0) {
    mg_printf_data(conn, "var: %s, file_name: %s, size: %d bytes<br>",
                   var_name, file_name, data_len);
  }
  mg_printf_data(conn, "%s", "</body></html>");
  return MG_TRUE;
 }
 static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
  switch (ev) {
    case MG_AUTH:     return MG_TRUE;
    case MG_REQUEST:  return send_index_page(conn);
    default:          return MG_FALSE;
  }
 }
 int main(void) {
  struct mg_server *server;
  // Create and configure the server
  server = mg_create_server(NULL, ev_handler);
  mg_set_option(server, "listening_port", "8080");
  // Serve request. Hit Ctrl-C to terminate the program
  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
  for (;;) {
    mg_poll_server(server, 1000);
  }
  // Cleanup, and free server instance
  mg_destroy_server(&server);
  return 0;
 }
@@ -1,12 +0,0 @@
 # Copyright (c) 2014 Cesanta Software
 # All rights reserved
 PROG = form_submit
 CFLAGS = -W -Wall -I../.. -pthread -g -O0 $(CFLAGS_EXTRA)
 SOURCES = $(PROG).c ../../mongoose.c
 $(PROG): $(SOURCES)
 	$(CC) -o $(PROG) $(SOURCES) $(CFLAGS)
 clean:
 	rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib
@@ -1,62 +0,0 @@
 #include <stdio.h>
 #include <string.h>
 #include "mongoose.h"
 static const char *html_form =
  "<html><body>POST example."
  "<form method=\"POST\" action=\"/handle_post_request\">"
  "Input 1: <input type=\"text\" name=\"input_1\" /> <br/>"
  "Input 2: <input type=\"text\" name=\"input_2\" /> <br/>"
  "<input type=\"submit\" />"
  "</form></body></html>";
 static void send_reply(struct mg_connection *conn) {
  char var1[500], var2[500];
  if (strcmp(conn->uri, "/handle_post_request") == 0) {
    // User has submitted a form, show submitted data and a variable value
    // Parse form data. var1 and var2 are guaranteed to be NUL-terminated
    mg_get_var(conn, "input_1", var1, sizeof(var1));
    mg_get_var(conn, "input_2", var2, sizeof(var2));
    // Send reply to the client, showing submitted form values.
    // POST data is in conn->content, data length is in conn->content_len
    mg_send_header(conn, "Content-Type", "text/plain");
    mg_printf_data(conn,
                   "Submitted data: [%.*s]\n"
                   "Submitted data length: %d bytes\n"
                   "input_1: [%s]\n"
                   "input_2: [%s]\n",
                   conn->content_len, conn->content,
                   conn->content_len, var1, var2);
  } else {
    // Show HTML form.
    mg_send_data(conn, html_form, strlen(html_form));
  }
 }
 static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
  if (ev == MG_REQUEST) {
    send_reply(conn);
    return MG_TRUE;
  } else if (ev == MG_AUTH) {
    return MG_TRUE;
  } else {
    return MG_FALSE;
  }
 }
 int main(void) {
  struct mg_server *server = mg_create_server(NULL, ev_handler);
  mg_set_option(server, "listening_port", "8080");
  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
  for (;;) {
    mg_poll_server(server, 1000);
  }
  mg_destroy_server(&server);
  return 0;
 }
@@ -1,21 +0,0 @@
 # Copyright (c) 2014 Cesanta Software
 # All rights reserved
 PROG = hello_world
 CFLAGS = -W -Wall -I../.. -pthread -g -O0 $(CFLAGS_EXTRA)
 SOURCES = $(PROG).c ../../mongoose.c
 all: $(PROG)
 run: $(PROG)
 	./$(PROG)
 $(PROG): $(SOURCES) Makefile
 	$(CC) -o $(PROG) $(SOURCES) $(CFLAGS)
 win:
 	wine cl $(SOURCES) /MD /nologo /DNDEBUG /O1 /I../.. /Fe$(PROG).exe
 	wine $(PROG).exe
 clean:
 	rm -rf $(PROG) *.exe *.dSYM *.obj *.exp .*o *.lib *.gc*
@@ -1,38 +0,0 @@
 // Copyright (c) 2014 Cesanta Software
 // All rights reserved
 //
 // This example demostrates basic use of Mongoose embedded web server.
 // $Date: 2014-09-09 22:20:23 UTC $
 #include <stdio.h>
 #include <string.h>
 #include "mongoose.h"
 static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
  switch (ev) {
    case MG_AUTH: return MG_TRUE;
    case MG_REQUEST:
      mg_printf_data(conn, "Hello! Requested URI is [%s]", conn->uri);
      return MG_TRUE;
    default: return MG_FALSE;
  }
 }
 int main(void) {
  struct mg_server *server;
  // Create and configure the server
  server = mg_create_server(NULL, ev_handler);
  mg_set_option(server, "listening_port", "8080");
  // Serve request. Hit Ctrl-C to terminate the program
  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
  for (;;) {
    mg_poll_server(server, 1000);
  }
  // Cleanup, and free server instance
  mg_destroy_server(&server);
  return 0;
 }
@@ -0,0 +1,22 @@
 PROG ?= example
 CFLAGS ?= -DMG_ENABLE_LINES $(EXTRA)
 ifneq ($(MBEDTLS),)
 CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS)/include -I/usr/include
 CFLAGS += -L$(MBEDTLS)/lib -lmbedtls -lmbedcrypto -lmbedx509
 endif
 ifneq ($(OPENSSL),)
 CFLAGS += -DMG_ENABLE_OPENSSL=1 -I$(OPENSSL)/include
 CFLAGS += -L$(OPENSSL)/lib -lssl -lcrypto
 endif
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG) $(ARGS)
 $(PROG): main.c
 	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb
@@ -0,0 +1,507 @@
 Subject: O=Digital Signature Trust Co., CN=DST Root CA X3
 Not Before: Sep 30 21:12:19 2000 GMT
 Not After : Sep 30 14:01:15 2021 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=IE, O=Baltimore, OU=CyberTrust, CN=Baltimore CyberTrust Root
 Not Before: May 12 18:46:00 2000 GMT
 Not After : May 12 23:59:00 2025 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=GeoTrust Inc., CN=GeoTrust Global CA
 Not Before: May 21 04:00:00 2002 GMT
 Not After : May 21 04:00:00 2022 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 ECC 256 bit SSL CA - G2
 Not Before: May 12 00:00:00 2015 GMT
 Not After : May 11 23:59:59 2025 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. - For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority - G5
 Not Before: Nov  8 00:00:00 2006 GMT
 Not After : Jul 16 23:59:59 2036 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=The Go Daddy Group, Inc., OU=Go Daddy Class 2 Certification Authority
 Not Before: Jun 29 17:06:20 2004 GMT
 Not After : Jun 29 17:06:20 2034 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 # Note: Amazon ATS endpoint uses this (2018/12/18)
 Subject: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2 Certification Authority
 Not Before: Jun 29 17:39:16 2004 GMT
 Not After : Jun 29 17:39:16 2034 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: Sep  1 00:00:00 2009 GMT
 Not After : Dec 31 23:59:59 2037 GMT
 Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Root Certificate Authority - G2
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2
 Not Before: Sep  1 00:00:00 2009 GMT
 Not After : Dec 31 23:59:59 2037 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: OU=GlobalSign Root CA - R2, O=GlobalSign, CN=GlobalSign
 Not Before: Dec 15 08:00:00 2006 GMT
 Not After : Dec 15 08:00:00 2021 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert High Assurance EV Root CA
 Not Before: Nov 10 00:00:00 2006 GMT
 Not After : Nov 10 00:00:00 2031 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert Global Root CA
 Not Before: Nov 10 00:00:00 2006 GMT
 Not After : Nov 10 00:00:00 2031 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 # *.azure-devices.de use this root.
 Subject: C = DE, O = D-Trust GmbH, CN = D-TRUST Root Class 3 CA 2 2009
 Not Before: Nov  5 08:35:58 2009 GMT
 Not After : Nov  5 08:35:58 2029 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 # https://www.amazontrust.com/repository/
 Subject: C = US, O = Amazon, CN = Amazon Root CA 1
 Not Before: May 26 00:00:00 2015 GMT
 Not After : Jan 17 00:00:00 2038 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C = US, O = Amazon, CN = Amazon Root CA 2
 Not Before: May 26 00:00:00 2015 GMT
 Not After : May 26 00:00:00 2040 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: May 26 00:00:00 2015 GMT
 Not After : May 26 00:00:00 2040 GMT
 Subject: C = US, O = Amazon, CN = Amazon Root CA 3
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: May 26 00:00:00 2015 GMT
 Not After : May 26 00:00:00 2040 GMT
 Subject: C = US, O = Amazon, CN = Amazon Root CA 4
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: Nov 10 00:00:00 2006 GMT
 Not After : Nov 10 00:00:00 2031 GMT
 Subject: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: Nov 13 00:00:00 2012 GMT
 Not After : Jan 19 03:14:07 2038 GMT
 Subject: OU = GlobalSign ECC Root CA - R4, O = GlobalSign, CN = GlobalSign
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 -----END CERTIFICATE-----
 Not Before: Nov  1 00:00:42 2018 GMT
 Not After : Nov  1 00:00:42 2042 GMT
 Subject: C = US, O = Google Trust Services LLC, CN = GTS LTSR
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
@@ -0,0 +1,56 @@
 // Copyright (c) 2021 Cesanta Software Limited
 // All rights reserved
 //
 // Example HTTP client. Connect to `s_url`, send request, wait for a response,
 // print the response and exit.
 // You can change `s_url` from the command line by executing: ./example YOUR_URL
 //
 // To enable SSL/TLS for this client, build it like this:
 //    make MBEDTLS=/path/to/your/mbedtls/installation
 //    make OPENSSL=/path/to/your/openssl/installation
 #include "mongoose.h"
 // The very first web page in history. You can replace it from command line
 static const char *s_url = "http://info.cern.ch";
 // Print HTTP response and signal that we're done
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  if (ev == MG_EV_CONNECT) {
    // Connected to server. Extract host name from URL
    struct mg_str host = mg_url_host(s_url);
    // If s_url is https://, tell client connection to use TLS
    if (mg_url_is_ssl(s_url)) {
      struct mg_tls_opts opts = {.ca = "ca.pem", .srvname = host};
      mg_tls_init(c, &opts);
    }
    // Send request
    mg_printf(c,
              "GET %s HTTP/1.0\r\n"
              "Host: %.*s\r\n"
              "\r\n",
              mg_url_uri(s_url), (int) host.len, host.ptr);
  } else if (ev == MG_EV_HTTP_MSG) {
    // Response is received. Print it
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    printf("%.*s", (int) hm->message.len, hm->message.ptr);
    c->is_closing = 1;         // Tell mongoose to close this connection
    *(bool *) fn_data = true;  // Tell event loop to stop
  } else if (ev == MG_EV_ERROR) {
    *(bool *) fn_data = true;  // Error, tell event loop to stop
  }
 }
 int main(int argc, char *argv[]) {
  struct mg_mgr mgr;                        // Event manager
  bool done = false;                        // Event handler flips it to true
  if (argc > 1) s_url = argv[1];            // Use URL from command line
  mg_log_set("3");                          // Set to 0 to disable debug
  mg_mgr_init(&mgr);                        // Initialise event manager
  mg_http_connect(&mgr, s_url, fn, &done);  // Create client connection
  while (!done) mg_mgr_poll(&mgr, 1000);    // Infinite event loop
  mg_mgr_free(&mgr);                        // Free resources
  return 0;
 }
@@ -0,0 +1,19 @@
 PROG ?= example
 ARGS ?= http://www.ladyada.net/
 MBEDTLS_DIR ?=
 ifeq "$(MBEDTLS_DIR)" ""
 else
 CFLAGS += -DMG_ENABLE_MBEDTLS=1 -I$(MBEDTLS_DIR)/include -I/usr/include
 CFLAGS += -L$(MBEDTLS_DIR)/lib -lmbedtls -lmbedcrypto -lmbedx509
 endif
 all: $(PROG)
 	$(DEBUGGER) ./$(PROG) $(ARGS)
 $(PROG): main.c
 	$(CC) ../../mongoose.c -I../.. -W -Wall $(CFLAGS) -o $(PROG) main.c
 clean:
 	rm -rf $(PROG) *.o *.dSYM *.gcov *.gcno *.gcda *.obj *.exe *.ilk *.pdb
@@ -0,0 +1,507 @@
 Subject: O=Digital Signature Trust Co., CN=DST Root CA X3
 Not Before: Sep 30 21:12:19 2000 GMT
 Not After : Sep 30 14:01:15 2021 GMT
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 -----END CERTIFICATE-----
 Subject: C=IE, O=Baltimore, OU=CyberTrust, CN=Baltimore CyberTrust Root
 Not Before: May 12 18:46:00 2000 GMT
 Not After : May 12 23:59:00 2025 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=GeoTrust Inc., CN=GeoTrust Global CA
 Not Before: May 21 04:00:00 2002 GMT
 Not After : May 21 04:00:00 2022 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=Symantec Corporation, OU=Symantec Trust Network, CN=Symantec Class 3 ECC 256 bit SSL CA - G2
 Not Before: May 12 00:00:00 2015 GMT
 Not After : May 11 23:59:59 2025 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. - For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority - G5
 Not Before: Nov  8 00:00:00 2006 GMT
 Not After : Jul 16 23:59:59 2036 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=The Go Daddy Group, Inc., OU=Go Daddy Class 2 Certification Authority
 Not Before: Jun 29 17:06:20 2004 GMT
 Not After : Jun 29 17:06:20 2034 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 # Note: Amazon ATS endpoint uses this (2018/12/18)
 Subject: C=US, O=Starfield Technologies, Inc., OU=Starfield Class 2 Certification Authority
 Not Before: Jun 29 17:39:16 2004 GMT
 Not After : Jun 29 17:39:16 2034 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: Sep  1 00:00:00 2009 GMT
 Not After : Dec 31 23:59:59 2037 GMT
 Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Root Certificate Authority - G2
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, ST=Arizona, L=Scottsdale, O=Starfield Technologies, Inc., CN=Starfield Services Root Certificate Authority - G2
 Not Before: Sep  1 00:00:00 2009 GMT
 Not After : Dec 31 23:59:59 2037 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: OU=GlobalSign Root CA - R2, O=GlobalSign, CN=GlobalSign
 Not Before: Dec 15 08:00:00 2006 GMT
 Not After : Dec 15 08:00:00 2021 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert High Assurance EV Root CA
 Not Before: Nov 10 00:00:00 2006 GMT
 Not After : Nov 10 00:00:00 2031 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert Global Root CA
 Not Before: Nov 10 00:00:00 2006 GMT
 Not After : Nov 10 00:00:00 2031 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 # *.azure-devices.de use this root.
 Subject: C = DE, O = D-Trust GmbH, CN = D-TRUST Root Class 3 CA 2 2009
 Not Before: Nov  5 08:35:58 2009 GMT
 Not After : Nov  5 08:35:58 2029 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 # https://www.amazontrust.com/repository/
 Subject: C = US, O = Amazon, CN = Amazon Root CA 1
 Not Before: May 26 00:00:00 2015 GMT
 Not After : Jan 17 00:00:00 2038 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Subject: C = US, O = Amazon, CN = Amazon Root CA 2
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 Not After : May 26 00:00:00 2040 GMT
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: May 26 00:00:00 2015 GMT
 Not After : May 26 00:00:00 2040 GMT
 Subject: C = US, O = Amazon, CN = Amazon Root CA 3
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: May 26 00:00:00 2015 GMT
 Not After : May 26 00:00:00 2040 GMT
 Subject: C = US, O = Amazon, CN = Amazon Root CA 4
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: Nov 10 00:00:00 2006 GMT
 Not After : Nov 10 00:00:00 2031 GMT
 Subject: C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: Nov 13 00:00:00 2012 GMT
 Not After : Jan 19 03:14:07 2038 GMT
 Subject: OU = GlobalSign ECC Root CA - R4, O = GlobalSign, CN = GlobalSign
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----
 Not Before: Nov  1 00:00:42 2018 GMT
 Not After : Nov  1 00:00:42 2042 GMT
 Subject: C = US, O = Google Trust Services LLC, CN = GTS LTSR
 -----BEGIN CERTIFICATE-----
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@@ -0,0 +1,64 @@
 // Copyright (c) 2020 Cesanta Software Limited
 // All rights reserved
 //
 // Example HTTP client that uses a proxy server. Usage:
 //    make
 //    ./example PROXY:PORT http://www.ladyada.net
 //
 // To enable SSL/TLS for this client, build it like this:
 //    make MBEDTLS_DIR=/path/to/your/mbedtls/installation
 #include "mongoose.h"
 // Print HTTP response and signal that we're done
 static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
  const char *url = fn_data;
  static bool connected;
  if (ev == MG_EV_HTTP_MSG) {
    struct mg_http_message *hm = (struct mg_http_message *) ev_data;
    printf("%.*s", (int) hm->message.len, hm->message.ptr);
    exit(EXIT_SUCCESS);
  } else if (ev == MG_EV_CONNECT) {
    // Proxy TCP connection established. Send CONNECT request
    struct mg_str host = mg_url_host(url);
    // c->is_hexdumping = 1;
    mg_printf(c, "CONNECT %.*s:%hu HTTP/1.1\r\nHost: %.*s:%hu\r\n\r\n",
              (int) host.len, host.ptr, mg_url_port(url), (int) host.len,
              host.ptr, mg_url_port(url));
    // If target URL is SSL/TLS, command client connection to use TLS
    if (mg_url_is_ssl(url)) {
      struct mg_tls_opts opts = {.ca = "ca.pem"};
      mg_tls_init(c, &opts);
    }
  } else if (!connected && ev == MG_EV_READ) {
    struct mg_http_message hm;
    int n = mg_http_parse((char *) c->recv.buf, c->recv.len, &hm);
    if (n > 0) {
      struct mg_str host = mg_url_host(url);
      // CONNECT response - tunnel is established
      connected = true;
      LOG(LL_DEBUG,
          ("Connected to proxy, status: %.*s", (int) hm.uri.len, hm.uri.ptr));
      mg_iobuf_delete(&c->recv, n);
      // Send request to the target server
      mg_printf(c, "GET / HTTP/1.0\r\nHost: %.*s\r\n\r\n", (int) host.len,
                host.ptr);
    }
  }
 }
 int main(int argc, char *argv[]) {
  struct mg_mgr mgr;
  if (argc != 3) {
    fprintf(stderr, "Usage: %s PROXY_URL URL\n", argv[0]);
    return EXIT_FAILURE;
  }
  mg_mgr_init(&mgr);                            // Initialise event manager
  mg_http_connect(&mgr, argv[1], fn, argv[2]);  // Connect to the proxy
  for (;;) mg_mgr_poll(&mgr, 1000);             // Event loop
  mg_mgr_free(&mgr);
  return 0;
 }
		`@@ -0,0 +1 @@`
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