Mongoose MSVC2015 warnings cleanup, part1

PUBLISHED_FROM=9e173215ed69464d1aa421d43a8fda814f36f96d

CONTRIBUTING.md

@@ -0,0 +1,8 @@
+People who have agreed to the
+[Cesanta CLA](https://docs.cesanta.com/contributors_la.shtml)
+can make contributions. Note that the CLA isn't a copyright
+_assigment_ but rather a copyright _license_.
+You retain the copyright on your contributions.
+
+We follow the Google C/C++ style guide: https://google.github.io/styleguide/cppguide.html
+We'd appreciate if your contribution follows the same style guide.

LICENSE

@@ -1,16 +1,16 @@
 Copyright (c) 2004-2013 Sergey Lyubka <valenok@gmail.com>
-Copyright (c) 2013 Cesanta Software Limited
+Copyright (c) 2013-2016 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>.

README.md

@@ -1,63 +1,78 @@
-# Mongoose Web Server
+# <img src="http://www.cesanta.com/hubfs/www.cesanta.com/Images/mongoose_library.png" width="64" height="64"> Mongoose - Embedded Web Server / Embedded Networking Library
 
-Mongoose is easy to use, powerful, embeddable web server.
+![](https://img.shields.io/badge/license-GPL_2-green.svg "License")
-   * [Mailing list](http://groups.google.com/group/mongoose-users)
+
-   * [Downloads & Documentation](http://cesanta.com/mongoose.shtml)
+Mongoose is ideal for embedded environments. It has been designed
-    * [How to use Lua Server Pages](http://cesanta.com/docs/Lua.shtml)
+for connecting devices and bringing them online.
-    * [How to create basic website with Mongoose](http://cesanta.com/docs/BasicWebsite.shtml)
+[Mongoose](https://www.cesanta.com/products)
-    * [How to create PHP website with Mongoose](http://cesanta.com/docs/PhpWebsite.shtml)
+has been on the market since 2004 and attracted
-    * [Embedding Guide](http://cesanta.com/docs/Embed.shtml)
+over 1 million cumulative downloads.
+
+It provides easy to use event-driven interface that allows to implement
+network protocols or scalable network applications  with little effort.
+Mongoose helps developers to manage the complexity of network programming
+and let them concentrate on the logic, saving time and money.
+
+- [Download Mongoose Source Code here](http://hubs.ly/H01bWvx0)
+- [Check our latest releases] (https://github.com/cesanta/mongoose/releases)
+- [Read User Guide and API reference](https://docs.cesanta.com/mongoose)
+- [Study mongoose example code](https://github.com/cesanta/mongoose/tree/master/examples)
+
+> Nothing overdone. Nothing less. So unbelievably easy to use.
+> Just how good software should be! -- Pritin Tyagaraj, SAP
+
+If you are looking for a complete IoT platform with firmware and cloud compotent, check out [Smart.js.] (https://github.com/cesanta/smart.js)
+
+# Support
+- [Support Forum - Ask your technical questions here] (http://forum.cesanta.com/index.php?p=/categories/smart-js)
+- [Chat - Visit www.cesanta.com for our live chat] (http://www.cesanta.com)
+- [Commercial one-to-one support - Available to all commercial license holders] (https://www.cesanta.com/services-support)
 
 # Features
 
-- Works on Windows, Mac, UNIX/Linux, iPhone, Android, and many other platforms
+* Cross-platform: works on Linux/UNIX, MacOS, QNX, eCos, Windows, Android,
-- CGI, SSI, SSL, Digest auth, Websocket, WEbDAV, Resumed download, URL rewrite, file blacklist, Custom error pages, Virtual hosts, IP-based ACL, Windows service
+  iPhone, FreeRTOS (TI CC3200, ESP8266), etc
-- Scripting and database support ([Lua](http://lua.org) +
+* Single-threaded, asynchronous, non-blocking core with simple event-based API
-[Sqlite](http://sqlite.org), see
+* Native support for [PicoTCP embedded TCP/IP stack](http://www.picotcp.com),
-[dirscan.lp](https://github.com/cesanta/mongoose/blob/master/examples/lua/dirscan.lp) ),
+  [LWIP embedded TCP/IP stack](https://en.wikipedia.org/wiki/LwIP)
-  which provides ready to go, powerful web development platform in
+* Builtin protocols:
-  one single-click executable with no dependencies
+   - plain TCP, plain UDP, SSL/TLS (over TCP, one-way or two-way)
-- Simple and clean
+   - HTTP client, HTTP server
-  [embedding API](https://github.com/cesanta/mongoose/blob/master/mongoose.h).
+   - WebSocket client, WebSocket server
-  The source is in single
+   - JSON-RPC client, JSON-RPC server
-  [mongoose.c](https://github.com/cesanta/mongoose/blob/master/mongoose.c) file
+   - MQTT client, MQTT broker
-  to make embedding easy
+   - CoAP client, CoAP server
-- Extremely lightweight, has a core of under 40kB and tiny runtime footprint
+   - DNS client, DNS server, async DNS resolver
-- Asyncronouns, non-blocking core supporting single- or multi-threaded usage
+* Tiny static and run-time footprint
-- On the market since 2004, stable, mature and tested,
+* Source code is both ISO C and ISO C++ compliant
-  has several man-years invested in continuous improvement and refinement
+* Very easy to integrate: just copy
-- Professional support and consultancy available from
+  [mongoose.c](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.c) and
-[Cesanta Software](http://cesanta.com), developer of Mongoose
+  [mongoose.h](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.h)
-
+  files to your build tree
-# Acknowledgements
-
-Mongoose made better thanks to the contribution of following people:
-
-Arnout Vandecappelle, Benoît Amiaux, Boris Pek, Cody Hanson, Colin Leitner,
-Daniel Oaks, Eric Bakan, Erik Oomen, Filipp Kovalev, Ger Hobbelt,
-Hendrik Polczynski, Igor Okulist, Jay, Joe Mucchiello, John Safranek,
-José Miguel Gonçalves, Shueng Chuan, Katerina Blinova, Konstantin Sorokin,
-Marin Atanasov, Matt Healy, Mitch Hendrickson, Nigel Stewart, Pavel Khlebovich,
-Sebastian Reinhard, Stefan Doehla, abadc0de, nullable.type,
-T.Barmann, D.Hughes, J.C.Sloan, R.Romeo, L.E.Spencer, S.Kotay, R.M.Shorter,
-W.Mar, J.Wilander, Santa from Memphis, S.Davies, C.Beck,
-O.M.Vilhunen, C.Radik, G.Woodcock, M.Szczepkowski,
-Eternal Lands Dev Team, T.Tollet, C.Tangerino, G.Karsai, A.Bourgett,
-C.Blakemore, D.Fonaryov, T.Andrle, O.IJsselmuiden, R.Womack, M.Tomlinson,
-A.Slåttå, L.Farrell, J.D.P.Ballestero, V.Albaev, B.Harker, T.Scheffel, H.Klein,
-R.Merit, T.Bennett, H.Solis, A.Zincenko, M.S., S.Krul, K.Cooke, S.McCallum,
-F.Morenius, and 10 others.
 
 # Licensing
 
-Mongoose is released under
+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).
-Businesses have an option to get non-restrictive, royalty-free commercial
-license and professional support from
-[Cesanta Software](http://cesanta.com).
 
-[Frozen JSON parser](https://github.com/cesanta/frozen),
+Commercial Projects:
-[Super Light Regular Expression library](https://github.com/cesanta/slre),
+Once your project becomes commercialised GPLv2 licensing dictates that you need to either open your source fully or purchase a commercial license. Cesanta offer full, royalty-free commercial licenses without any GPL restrictions. If your needs require a custom license, we’d be happy to work on a solution with you. [Contact us for pricing.] (https://www.cesanta.com/contact)
-[Super Light DNS Resolver](https://github.com/cesanta/sldr)
+
-are other projects by Cesanta Software, developed with the same philosophy
+Prototyping:
-of functionality and simplicity.
+While your project is still in prototyping stage and not for sale, you can use Mongoose’s open source code without license restrictions.
+
+# Dashboard Example
+
+Mongoose is often used to implement device dashboards and real-time
+data exchange over Websocket. Here is a dashboard example that illustrates
+the functionality:
+
+![](http://www.cesanta.com/hubfs/www.cesanta.com/diagrams/dash_mongoose_diagram.png)
+
+[Developing a new product? Contact us today to discuss how Mongoose can help
+](https://www.cesanta.com/contact)
+
+# Contributions
+
+People who have agreed to the [Cesanta CLA] (https://docs.cesanta.com/contributors_la.shtml) can make contributions. Note that the CLA isn't a copyright assigment but rather a copyright license. You retain the copyright on your contributions.
+
+[![Analytics](https://ga-beacon.appspot.com/UA-42732794-5/project-page)](https://github.com/cesanta/mongoose)

docs/API.md

@@ -1,241 +0,0 @@
-# Mongoose API Reference
-
-    struct mg_server *mg_create_server(void *server_param);
-
-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.
-
-    void 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 send `MG_POLL` events on each iteration of `mg_poll_server()`
-
-      `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 only to those connections which returned `MG_MORE`.
-      Event handler should try to complete the reply. If reply is completed,
-      then event handler should return `MG_TRUE`. Otherwise, it should
-      return `MG_FALSE`, and polling will continue until
-      handler returns `MG_TRUE`.
-   * `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.
-
-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.
-   * `MG_REPLY` is sent when response has been received from the remote host.
-   * `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.
-
-
-    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_iterate_over_connections(struct mg_server *, mg_handler_t func);
-
-This is an interface primarily designed to push arbitrary data to websocket
-connections at any time. This function could be called from the Mongoose thread
-only.  When it returns, Mongoose thread calls `func()` for each active
-connection.
-It is allowed to call `mg_send_data()` or `mg_websocket_write()` within a
-callback, cause `func` is executed in the context of the Mongoose thread.
-
-    void mg_wakeup_server(struct mg_server *);
-
-Makes `mg_poll_server()` that could be sleeping in the `select()` syscall
-to break the call and return. This function can be called from any thread.
-It is designed to let other threads wake up Mongoose thread from the sleep
-and let it do a fresh new IO iteration over all connection. Usually it is done
-when other threads decides there is new data ready to be sent by Mongoose.
-
-    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.
-
-<!-- -->
-
-    int mg_websocket_write(struct mg_connection* conn, int opcode,
-                           const char *data, size_t data_len);
-
-Similar to `mg_write()`, 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. For another,
-cookie-based way please refer to the examples/chat.c in the source tree.  
-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.

docs/AndroidBuild.md

@@ -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/examples`
-  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.

docs/BasicWebsite.md

@@ -1,34 +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_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 "Start browser" 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)

docs/Embed.md

@@ -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 send `MG_POLL` events on each iteration of `mg_poll_server()`
-
-      `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 only to those connections which returned `MG_MORE`.
-      Event handler should try to complete the reply. If reply is completed,
-      then event handler should return `MG_TRUE`. Otherwise, it should
-      return `MG_FALSE`, and polling will continue until
-      handler returns `MG_TRUE`.
-   * `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 a well-commented example code, listed below:
-
-   * [hello.c](https://github.com/cesanta/mongoose/blob/master/examples/hello.c)
-   a minimalistic hello world example
-   * [post.c](https://github.com/cesanta/mongoose/blob/master/examples/post.c)
-   shows how to handle form input
-   * [upload.c](https://github.com/cesanta/mongoose/blob/master/examples/post.c)
-   shows how to upload files
-   * [websocket.c](https://github.com/cesanta/mongoose/blob/master/examples/websocket.c) demonstrates websocket usage
-   * [auth.c](https://github.com/cesanta/mongoose/blob/master/examples/websocket.c) demonstrates API-controlled Digest authorization
-   * [mjpg.c](https://github.com/cesanta/mongoose/blob/master/examples/mjpg.c) demonstrates MJPEG streaming implementation
-
-## 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_NO_THREADS
-    -DMONGOOSE_NO_WEBSOCKET     Disable WebSocket support
-
-    -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

docs/FAQ.md

@@ -1,23 +0,0 @@
-# Mongoose FAQ
-
-### 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.

docs/FileSharing.md

@@ -1,19 +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. 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 and choose "Start browser" menu:
-![screenshot](http://cesanta.com/images/tut_sharing/tut3.png)
-
-## 4. A browser will popup displaying files. That's all! To access those files from another computer, start a browser and type `http://<your_machine_ip_address>:8080/` in the address bar.
-
-![screenshot](http://cesanta.com/images/tut_sharing/tut4.png)
-
-## Tip: to find out what is your machine IP address, take a look at http://windows.microsoft.com/en-us/windows/find-computers-ip-address

docs/Internals.md

@@ -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.

docs/LuaSqlite.md

@@ -1,51 +0,0 @@
-# Mongoose Lua Server Pages
-
-Pre-built Windows and Mac mongoose binaries support Lua Server Pages
-functionality.
-That means it is possible to write PHP-like scripts with mongoose
-using Lua programming language instead of PHP. Lua is known
-for it's speed and small size. Mongoose uses Lua version 5.2.3, the
-documentation for it can be found at
-[Lua 5.2 reference manual](http://www.lua.org/manual/5.2/).
-
-To create a Lua Page, make a file that is called `ANY_NAME.lp`. For example,
-`my_page.lp`. It is important to have a file
-name that ends up with `.lp`, cause this is the way mongoose recognises
-Lua Page file. The contents of the file, just like
-with PHP, is HTML with embedded Lua code. Lua code must be enclosed within
-`<?  ?>` blocks, and can appear anywhere on the page.
-
-Mongoose does not send HTTP headers for Lua pages. Therefore,
-every Lua Page must begin with HTTP status line and headers, like this:
-
-    <? mg.write('HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n') ?>
-    <html><body>
-      <span>Today is:</span> <? mg.write(os.date("%A")) ?>
-    </body></html>
-
-Note that this example uses function `mg.write()`, which prints data to the
-web page. Using function `mg.write()` is the way to generate web content from
-inside Lua code. In addition to `mg.write()`, all standard library functions
-are accessible from the Lua code (please check reference manual for details).
-Information about the request is available via the `mg.request_info` object.
-I contains request method, all headers, etcetera. Please refer to
-`struct mg_request_info` definition in
-[mongoose.h](https://github.com/cesanta/mongoose/blob/master/mongoose.h)
-to see what is available via the `mg.request_info` object.
-Check out [prime_numbers.lp](https://github.com/cesanta/mongoose/blob/master/examples/lua/prime_numbers.lp) for some example.
-
-Mongoose exports the following to the Lua Server Page:
-
-    mg.write(str)     -- writes string to the client
-    mg.onerror(msg)   -- error handler, can be overridden
-    mg.request_info   -- a table with request information
-
-Using Lua scripting it is easy to emulate SSI functionality. For example,
-to include the content of another file, one can write:
-
-    <? mg.write(io.open('MY_FILE.TXT'):read('*all')) ?>
-
-To serve a Lua Page, mongoose creates Lua context. That context is used for
-all Lua blocks within the page. That means, all Lua blocks on the same page
-share the same context. If one block defines a variable, for example, that
-variable is visible in all following blocks.

docs/Options.md

@@ -1,147 +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. 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`.
-
-### 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.
-
-### idle\_timeout\_ms
-Timeout for idle connections in milliseconds. Default: `30000` (30 seconds)
-
-### 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`
-
-### ssl_certificate
-Path to SSL certificate file. The file must be in PEM format,
-and it must have both private key and certificate, see for example
-[ssl_cert.pem](https://github.com/cesanta/mongoose/blob/master/build/ssl_cert.pem). If this option is set, then Mongoose serves SSL connections on
-`listening_port`. Default: not set.
-
-### 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.  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.

docs/PhpWebsite.md

@@ -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 "Start browser" 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)

docs/SSL.md

@@ -1,75 +0,0 @@
-# Mongoose SSL guide
-
-SSL is a protocol that makes web communication secure. To enable SSL
-in mongoose, 3 steps are required:
-
-   1. Valid certificate file must be created
-   2. `ssl_certificate` options must be set to contain path to the
-       certificate file.
-   3. `listening_ports` option must contain a port number with letter `s`
-        appended to it, which instructs Mongoose to use SSL for all connections
-        made to that port.
-
-Below is the `mongoose.conf` file snippet for typical SSL setup:
-
-    document_root     www_root        # Serve files in www_root directory
-    listening_ports   80r,443s        # Redirect all HTTP requests to HTTPS
-    ssl_certificate   ssl_cert.pem    # Location of certificate file
-
-## 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.

docs/Usage.md

@@ -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

examples/.gitignore

@@ -0,0 +1 @@
+*.exe

examples/ESP8266_RTOS/Makefile

@@ -0,0 +1,118 @@
+#############################################################
+# Required variables for each makefile
+# Discard this section from all parent makefiles
+# Expected variables (with automatic defaults):
+#   CSRCS (all "C" files in the dir)
+#   SUBDIRS (all subdirs with a Makefile)
+#   GEN_LIBS - list of libs to be generated ()
+#   GEN_IMAGES - list of object file images to be generated ()
+#   GEN_BINS - list of binaries to be generated ()
+#   COMPONENTS_xxx - a list of libs/objs in the form
+#     subdir/lib to be extracted and rolled up into
+#     a generated lib/image xxx.a ()
+#
+TARGET = eagle
+#FLAVOR = release
+FLAVOR = debug
+
+EXTRA_CCFLAGS += -Wall -Werror
+
+ifndef PDIR # {
+GEN_IMAGES= eagle.app.v6.out
+GEN_BINS= eagle.app.v6.bin
+SPECIAL_MKTARGETS=$(APP_MKTARGETS)
+SUBDIRS=user
+
+endif # } PDIR
+
+LDDIR = $(SDK_PATH)/ld
+
+CCFLAGS += -Os
+
+TARGET_LDFLAGS =		\
+	-nostdlib		\
+	-Wl,-EL \
+	--longcalls \
+	--text-section-literals
+
+ifeq ($(FLAVOR),debug)
+    TARGET_LDFLAGS += -g -O2
+endif
+
+ifeq ($(FLAVOR),release)
+    TARGET_LDFLAGS += -g -O0
+endif
+
+COMPONENTS_eagle.app.v6 = \
+	user/libuser.a
+
+LINKFLAGS_eagle.app.v6 = \
+	-L$(SDK_PATH)/lib        \
+	-Wl,--gc-sections   \
+	-nostdlib	\
+    -T$(LD_FILE)   \
+	-Wl,--no-check-sections	\
+    -u call_user_start	\
+	-Wl,-static						\
+	-Wl,--start-group					\
+	-lc \
+	-lgcc					\
+	-lhal					\
+	-lphy	\
+	-lpp	\
+	-lnet80211	\
+	-lwpa	\
+	-lcrypto    \
+	-lmain	\
+	-lfreertos	\
+	-llwip	\
+	$(DEP_LIBS_eagle.app.v6)					\
+	-Wl,--end-group
+
+DEPENDS_eagle.app.v6 = \
+                $(LD_FILE) \
+                $(LDDIR)/eagle.rom.addr.v6.ld
+
+#############################################################
+# Configuration i.e. compile options etc.
+# Target specific stuff (defines etc.) goes in here!
+# Generally values applying to a tree are captured in the
+#   makefile at its root level - these are then overridden
+#   for a subtree within the makefile rooted therein
+#
+
+#UNIVERSAL_TARGET_DEFINES =		\
+
+# Other potential configuration flags include:
+#	-DTXRX_TXBUF_DEBUG
+#	-DTXRX_RXBUF_DEBUG
+#	-DWLAN_CONFIG_CCX
+CONFIGURATION_DEFINES =	-DICACHE_FLASH
+
+DEFINES +=				\
+	$(UNIVERSAL_TARGET_DEFINES)	\
+	$(CONFIGURATION_DEFINES)
+
+DDEFINES +=				\
+	$(UNIVERSAL_TARGET_DEFINES)	\
+	$(CONFIGURATION_DEFINES)
+
+
+#############################################################
+# Recursion Magic - Don't touch this!!
+#
+# Each subtree potentially has an include directory
+#   corresponding to the common APIs applicable to modules
+#   rooted at that subtree. Accordingly, the INCLUDE PATH
+#   of a module can only contain the include directories up
+#   its parent path, and not its siblings
+#
+# Required for each makefile to inherit from the parent
+#
+
+INCLUDES := $(INCLUDES) -I $(PDIR)include
+sinclude $(SDK_PATH)/Makefile
+
+.PHONY: FORCE
+FORCE:
+

examples/ESP8266_RTOS/README.md

@@ -0,0 +1,36 @@
+This is a Mongoose "Hello, world" that can be compiled under ESP8266 RTOS SDK.
+
+It sets up an AP (SSID `Mongoose`) and serves a "hello world" page on http://192.168.4.1/
+
+Most of the the boilerplate comes from [project_template](https://github.com/espressif/ESP8266_RTOS_SDK/tree/master/examples/project_template) (@ [3ca6af5](https://github.com/espressif/ESP8266_RTOS_SDK/tree/3ca6af5da68678d809b34c7cd98bee71e0235039/examples/project_template)) with minimal changes.
+
+To build with no changes to the SDK, you will need a module with 1MB (8Mb) flash or more.
+
+Compile (for NodeMCU 1.0):
+
+```
+$ export SDK_PATH=/path/to/ESP8266_RTOS_SDK
+$ export BIN_PATH=./bin
+$ make clean; make BOOT=new APP=1 SPI_SPEED=40 SPI_MODE=dio SPI_SIZE_MAP=6
+```
+
+Flash (using [esptool](https://github.com/themadinventor/esptool)):
+
+```
+$ esptool.py --port /dev/ttyUSB0 --baud 230400 \
+    write_flash --flash_mode=dio --flash_size=32m \
+    0x00000 ${SDK_PATH}/bin/boot_v1.4\(b1\).bin \
+    0x01000 ${BIN_PATH}/upgrade/user1.4096.new.6.bin
+```
+
+
+The output can be made to fit in 512KB (4Mb), but stock linker scripts do not reserve enough space for code.
+Custom linker script is provided for that, so you can use it for smaller devices like so (example that will work with ESP-01):
+
+```
+  $ make clean; make BOOT=none APP=0 SPI_SPEED=40 SPI_MODE=qio SPI_SIZE_MAP=0 LD_FILE=ld/eagle.app.v6.512.compact.ld
+  $ esptool.py --port /dev/ttyUSB0 --baud 230400 \
+      write_flash --flash_mode=qio --flash_size=4m \
+      0x00000 ${BIN_PATH}/eagle.flash.bin \
+      0x10000 ${BIN_PATH}/eagle.irom0text.bin
+```

examples/ESP8266_RTOS/gen_misc.sh

@@ -0,0 +1,173 @@
+#!/bin/bash
+
+:<<!
+******NOTICE******
+MUST set SDK_PATH & BIN_PATH firstly!!!
+example:
+export SDK_PATH=~/ESP8266_RTOS_SDK
+export BIN_PATH=~/esp8266_bin
+!
+
+echo "gen_misc.sh version 20150911"
+echo ""
+
+if [ $SDK_PATH ]; then
+    echo "SDK_PATH:"
+    echo "$SDK_PATH"
+    echo ""
+else
+    echo "ERROR: Please export SDK_PATH in gen_misc.sh firstly, exit!!!"
+    exit
+fi
+
+if [ $BIN_PATH ]; then
+    echo "BIN_PATH:"
+    echo "$BIN_PATH"
+    echo ""
+else
+    echo "ERROR: Please export BIN_PATH in gen_misc.sh firstly, exit!!!"
+    exit
+fi
+
+echo "Please check SDK_PATH & BIN_PATH, enter (Y/y) to continue:"
+read input
+
+if [[ $input != Y ]] && [[ $input != y ]]; then
+    exit
+fi
+
+echo ""
+
+echo "Please follow below steps(1-5) to generate specific bin(s):"
+echo "STEP 1: use boot_v1.2+ by default"
+boot=new
+
+echo "boot mode: $boot"
+echo ""
+
+echo "STEP 2: choose bin generate(0=eagle.flash.bin+eagle.irom0text.bin, 1=user1.bin, 2=user2.bin)"
+echo "enter (0/1/2, default 0):"
+read input
+
+if [ -z "$input" ]; then
+    if [ $boot != none ]; then
+    	boot=none
+	echo "ignore boot"
+    fi
+    app=0
+    echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+elif [ $input == 1 ]; then
+    if [ $boot == none ]; then
+    	app=0
+	echo "choose no boot before"
+	echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+    else
+	app=1
+        echo "generate bin: user1.bin"
+    fi
+elif [ $input == 2 ]; then
+    if [ $boot == none ]; then
+    	app=0
+	echo "choose no boot before"
+	echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+    else
+    	app=2
+    	echo "generate bin: user2.bin"
+    fi
+else
+    if [ $boot != none ]; then
+    	boot=none
+	echo "ignore boot"
+    fi
+    app=0
+    echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+fi
+
+echo ""
+
+echo "STEP 3: choose spi speed(0=20MHz, 1=26.7MHz, 2=40MHz, 3=80MHz)"
+echo "enter (0/1/2/3, default 2):"
+read input
+
+if [ -z "$input" ]; then
+    spi_speed=40
+elif [ $input == 0 ]; then
+    spi_speed=20
+elif [ $input == 1 ]; then
+    spi_speed=26.7
+elif [ $input == 3 ]; then
+    spi_speed=80
+else
+    spi_speed=40
+fi
+
+echo "spi speed: $spi_speed MHz"
+echo ""
+
+echo "STEP 4: choose spi mode(0=QIO, 1=QOUT, 2=DIO, 3=DOUT)"
+echo "enter (0/1/2/3, default 0):"
+read input
+
+if [ -z "$input" ]; then
+    spi_mode=QIO
+elif [ $input == 1 ]; then
+    spi_mode=QOUT
+elif [ $input == 2 ]; then
+    spi_mode=DIO
+elif [ $input == 3 ]; then
+    spi_mode=DOUT
+else
+    spi_mode=QIO
+fi
+
+echo "spi mode: $spi_mode"
+echo ""
+
+echo "STEP 5: choose spi size and map"
+echo "    0= 512KB( 256KB+ 256KB)"
+echo "    2=1024KB( 512KB+ 512KB)"
+echo "    3=2048KB( 512KB+ 512KB)"
+echo "    4=4096KB( 512KB+ 512KB)"
+echo "    5=2048KB(1024KB+1024KB)"
+echo "    6=4096KB(1024KB+1024KB)"
+echo "enter (0/2/3/4/5/6, default 0):"
+read input
+
+if [ -z "$input" ]; then
+    spi_size_map=0
+    echo "spi size: 512KB"
+    echo "spi ota map:  256KB + 256KB"
+elif [ $input == 2 ]; then
+    spi_size_map=2
+    echo "spi size: 1024KB"
+    echo "spi ota map:  512KB + 512KB"
+elif [ $input == 3 ]; then
+    spi_size_map=3
+    echo "spi size: 2048KB"
+    echo "spi ota map:  512KB + 512KB"
+elif [ $input == 4 ]; then
+    spi_size_map=4
+    echo "spi size: 4096KB"
+    echo "spi ota map:  512KB + 512KB"
+elif [ $input == 5 ]; then
+    spi_size_map=5
+    echo "spi size: 2048KB"
+    echo "spi ota map:  1024KB + 1024KB"
+elif [ $input == 6 ]; then
+    spi_size_map=6
+    echo "spi size: 4096KB"
+    echo "spi ota map:  1024KB + 1024KB"
+else
+    spi_size_map=0
+    echo "spi size: 512KB"
+    echo "spi ota map:  256KB + 256KB"
+fi
+
+echo ""
+
+echo "start..."
+echo ""
+
+make clean
+
+make BOOT=$boot APP=$app SPI_SPEED=$spi_speed SPI_MODE=$spi_mode SPI_SIZE_MAP=$spi_size_map

examples/ESP8266_RTOS/ld/eagle.app.v6.512.compact.ld

@@ -0,0 +1,20 @@
+/* eagle.flash.bin     @ 0x00000 */
+/* eagle.irom0text.bin @ 0x10000 */
+
+/*
+ * Flash map for 512KB flash.
+ *
+ * There is 0x8000 (32KB) available between 0x8000 and 0x10000.
+ *
+ * Note: IROM images starts at 0x10000 (ignore Makefile output which says 0x40000.
+ */
+
+MEMORY
+{
+  dport0_0_seg :                      	org = 0x3FF00000, len = 0x10
+  dram0_0_seg :                       	org = 0x3FFE8000, len = 0x18000
+  iram1_0_seg :                       	org = 0x40100000, len = 0x8000
+  irom0_0_seg :                       	org = 0x40210000, len = 0x6C000
+}
+
+INCLUDE "../ld/eagle.app.v6.common.ld"

examples/ESP8266_RTOS/readme.txt

@@ -0,0 +1,56 @@
+This is a simple project template.
+
+sample_lib is an example for multi-level folder Makefile, notice the folder structure and each Makefile, you can get the clue.
+
+
+HOWTO:
+1. Copy this folder to anywhere.
+Example:
+   Copy to ~/workspace/project_template
+   You can rename this folder as you like.
+
+2. Export SDK_PATH and BIN_PATH.
+Example:
+   Your SDK path is ~/esp_iot_rtos_sdk, and want generate bin at ~/esp8266_bin.
+   Do follow steps:
+     1>. export SDK_PATH=~/esp_iot_rtos_sdk
+     2>. export BIN_PATH=~/esp8266_bin
+   SDK and project are seperate, you can update SDK without change your project.
+
+3. Enter project_template folder, run ./gen_misc.sh, and follow the tips and steps.
+
+
+Compile Options:
+(1) COMPILE
+    Possible value: xcc
+    Default value:
+    If not set, use gcc by default.
+
+(2) BOOT
+    Possible value: none/old/new
+      none: no need boot
+      old: use boot_v1.1
+      new: use boot_v1.2
+    Default value: new
+
+(3) APP
+    Possible value: 0/1/2
+      0: original mode, generate eagle.app.v6.flash.bin and eagle.app.v6.irom0text.bin
+      1: generate user1
+      2: generate user2
+    Default value: 0
+
+(3) SPI_SPEED
+    Possible value: 20/26.7/40/80
+    Default value: 40
+
+(4) SPI_MODE
+    Possible value: QIO/QOUT/DIO/DOUT
+    Default value: QIO
+
+(4) SPI_SIZE_MAP
+    Possible value: 0/2/3/4/5/6
+    Default value: 0
+
+For example:
+    make COMPILE=gcc BOOT=new APP=1 SPI_SPEED=40 SPI_MODE=QIO SPI_SIZE_MAP=0

examples/ESP8266_RTOS/user/Makefile

@@ -0,0 +1,50 @@
+
+#############################################################
+# Required variables for each makefile
+# Discard this section from all parent makefiles
+# Expected variables (with automatic defaults):
+#   CSRCS (all "C" files in the dir)
+#   SUBDIRS (all subdirs with a Makefile)
+#   GEN_LIBS - list of libs to be generated ()
+#   GEN_IMAGES - list of images to be generated ()
+#   COMPONENTS_xxx - a list of libs/objs in the form
+#     subdir/lib to be extracted and rolled up into
+#     a generated lib/image xxx.a ()
+#
+ifndef PDIR
+GEN_LIBS = libuser.a
+endif
+
+
+#############################################################
+# Configuration i.e. compile options etc.
+# Target specific stuff (defines etc.) goes in here!
+# Generally values applying to a tree are captured in the
+#   makefile at its root level - these are then overridden
+#   for a subtree within the makefile rooted therein
+#
+DEFINES += -DMG_LOCALS \
+           -DMG_NO_BSD_SOCKETS \
+           -DMG_DISABLE_FILESYSTEM \
+           -DMG_DISABLE_STDIO \
+           -DMG_MAX_HTTP_HEADERS=20 -DMG_MAX_HTTP_REQUEST_SIZE=1024 \
+           -DMG_MAX_PATH=40 -DMG_MAX_HTTP_SEND_MBUF=1024 \
+           -DRTOS_SDK -DMG_LWIP -DLWIP_TIMEVAL_PRIVATE=0 \
+           -DMG_INTERNAL=
+
+#############################################################
+# Recursion Magic - Don't touch this!!
+#
+# Each subtree potentially has an include directory
+#   corresponding to the common APIs applicable to modules
+#   rooted at that subtree. Accordingly, the INCLUDE PATH
+#   of a module can only contain the include directories up
+#   its parent path, and not its siblings
+#
+# Required for each makefile to inherit from the parent
+#
+
+INCLUDES += -I ./
+PDIR := ../$(PDIR)
+sinclude $(PDIR)Makefile
+

examples/ESP8266_RTOS/user/esp_libc.c

@@ -0,0 +1,59 @@
+/*
+* Copyright (c) 2015 Cesanta Software Limited
+* All rights reserved
+*/
+
+#include <ctype.h>
+#include <sys/time.h>
+#include <stdint.h>
+
+#include <math.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "esp_common.h"
+
+/* Makes fprintf(stdout) and stderr work. */
+/*
+_ssize_t _write_r(struct _reent *r, int fd, void *buf, size_t len) {
+  if (fd == 1 || fd == 2) {
+    size_t i;
+    for (i = 0; i < len; i++) {
+      os_putc(((char *) buf)[i]);
+    }
+    return len;
+  }
+  return -1;
+}
+*/
+
+/*
+ * You'll need to implement _open_r and friends if you want file operations. See
+ * https://github.com/cesanta/smart.js/blob/master/platforms/esp8266/user/esp_fs.c
+ * for SPIFFS-based implementation.
+ */
+
+void abort(void) __attribute__((no_instrument_function));
+void abort(void) {
+  /* cause an unaligned access exception, that will drop you into gdb */
+  *(int *) 1 = 1;
+  while (1)
+    ; /* avoid gcc warning because stdlib abort() has noreturn attribute */
+}
+
+void _exit(int status) {
+  abort();
+}
+
+int _gettimeofday_r(struct _reent *r, struct timeval *tp, void *tzp) {
+  uint32_t time = system_get_time();
+  tp->tv_sec = time / 1000000;
+  tp->tv_usec = time % 1000000;
+  return 0;
+}
+
+long int random(void) {
+  return os_random();
+}

examples/ESP8266_RTOS/user/mongoose.c

@@ -0,0 +1 @@
+../../../mongoose.c

examples/ESP8266_RTOS/user/mongoose.h

@@ -0,0 +1 @@
+../../../mongoose.h

examples/ESP8266_RTOS/user/user_main.c

@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "esp_common.h"
+
+#include "mongoose.h"
+
+#define AP_SSID "Mongoose"
+#define AP_PASS "Mongoose"
+#define AP_CHAN 9
+#define MG_LISTEN_ADDR "80"
+
+#define MG_TASK_STACK_SIZE 2048
+#define MG_TASK_PRIORITY 1
+
+void uart_div_modify(int uart_no, unsigned int freq);
+
+void ev_handler(struct mg_connection *nc, int ev, void *p) {
+  static const char *reply_fmt =
+      "HTTP/1.0 200 OK\r\n"
+      "Connection: close\r\n"
+      "Content-Type: text/plain\r\n"
+      "\r\n"
+      "Hello %s\n";
+  LOG(LL_DEBUG, ("conn %p ev %d", nc, ev));
+
+  switch (ev) {
+    case MG_EV_ACCEPT: {
+      char addr[32];
+      mg_sock_addr_to_str(&nc->sa, addr, sizeof(addr),
+                          MG_SOCK_STRINGIFY_IP | MG_SOCK_STRINGIFY_PORT);
+      LOG(LL_INFO, ("Connection %p from %s", nc, addr));
+      break;
+    }
+    case MG_EV_HTTP_REQUEST: {
+      char addr[32];
+      struct http_message *hm = (struct http_message *) p;
+      (void) hm;
+      mg_sock_addr_to_str(&nc->sa, addr, sizeof(addr),
+                          MG_SOCK_STRINGIFY_IP | MG_SOCK_STRINGIFY_PORT);
+      LOG(LL_INFO,
+          ("HTTP request from %s: %.*s %.*s", addr, (int) hm->method.len,
+           hm->method.p, (int) hm->uri.len, hm->uri.p));
+      mg_printf(nc, reply_fmt, addr);
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      break;
+    }
+    case MG_EV_CLOSE: {
+      LOG(LL_INFO, ("Connection %p closed", nc));
+      break;
+    }
+  }
+}
+
+void setup_ap() {
+  struct softap_config cfg;
+
+  wifi_set_opmode_current(SOFTAP_MODE);
+  memset(&cfg, 0, sizeof(cfg));
+  strcpy((char *) cfg.ssid, AP_SSID);
+  strcpy((char *) cfg.password, AP_PASS);
+  cfg.ssid_len = strlen((const char *) cfg.ssid);
+  cfg.authmode =
+      strlen((const char *) cfg.password) ? AUTH_WPA2_PSK : AUTH_OPEN;
+  cfg.channel = AP_CHAN;
+  cfg.ssid_hidden = 0;
+  cfg.max_connection = 10;
+  cfg.beacon_interval = 100; /* ms */
+
+  LOG(LL_INFO, ("Setting up AP '%s' on channel %d", cfg.ssid, cfg.channel));
+  wifi_softap_set_config_current(&cfg);
+}
+
+static void mg_task(void *arg) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  cs_log_set_level(LL_INFO);
+
+  LOG(LL_INFO, ("SDK version: %s", system_get_sdk_version()));
+  setup_ap();
+
+  mg_mgr_init(&mgr, NULL);
+
+  nc = mg_bind(&mgr, MG_LISTEN_ADDR, ev_handler);
+  if (nc == NULL) {
+    LOG(LL_ERROR, ("Error setting up listener!"));
+    return;
+  }
+  mg_set_protocol_http_websocket(nc);
+
+  while (1) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+}
+
+xTaskHandle s_mg_task_handle;
+
+void user_init(void) {
+  uart_div_modify(0, UART_CLK_FREQ / 115200);
+
+//  setvbuf(stdout, NULL, _IONBF, 0);
+//  setvbuf(stderr, NULL, _IONBF, 0);
+
+  xTaskCreate(mg_task, (const signed char *) "mongoose", MG_TASK_STACK_SIZE,
+              NULL, MG_TASK_PRIORITY, &s_mg_task_handle);
+}
+
+void call_user_start(void) {
+  user_init();
+}

examples/Makefile

@@ -1,62 +1,15 @@
-CFLAGS = -W -Wall -I.. -pthread -g -pipe $(CFLAGS_EXTRA)
+# Copyright (c) 2014 Cesanta Software
-RM = rm -rf
+# All rights reserved
-OUT = -o $@
 
-ifeq ($(OS),Windows_NT)
+SUBDIRS = $(sort $(dir $(wildcard */)))
-  MSVC = ../../vc6
+X = $(SUBDIRS)
-  RM = del /q /f
-  OUT =
-  CC = $(MSVC)/bin/cl
-  CFLAGS = /MD /TC /nologo /W3 /I$(MSVC)/include /I..
-  CFLAGS += /link /incremental:no /libpath:$(MSVC)/lib /machine:IX86
-  CFLAGS += $(CFLAGS_EXTRA)
-else
-  UNAME_S := $(shell uname -s)
 
-  ifeq ($(UNAME_S),Linux)
+.PHONY: $(SUBDIRS)
-    CFLAGS += -ldl
-  endif
 
-  ifeq ($(UNAME_S),Darwin)
+all: $(SUBDIRS)
-  endif
-endif
 
-all: hello websocket server post multi_threaded upload auth
+$(SUBDIRS):
-
+	@$(MAKE) -C $@
-# To enable Lua in a server, uncomment following lines
-LUA    = ../lua-5.2.3/src
-#CFLAGS += -I$(LUA) -L$(LUA) -llua -DMONGOOSE_USE_LUA
-
-server: server.c ../mongoose.c
-	$(CC) server.c ../mongoose.c $(OUT)  $(CFLAGS)
-
-hello: hello.c ../mongoose.c
-	$(CC) hello.c ../mongoose.c $(OUT) $(CFLAGS)
-
-websocket: websocket_html.c websocket.c ../mongoose.c
-	$(CC) websocket.c websocket_html.c ../mongoose.c $(OUT)  $(CFLAGS)
-
-post: post.c ../mongoose.c
-	$(CC) post.c ../mongoose.c $(OUT) $(CFLAGS)
-
-multi_threaded: multi_threaded.c ../mongoose.c
-	$(CC) multi_threaded.c ../mongoose.c $(OUT) $(CFLAGS)
-
-upload: upload.c ../mongoose.c
-	$(CC) upload.c ../mongoose.c $(OUT) $(CFLAGS)
-
-auth: auth.c ../mongoose.c
-	$(CC) auth.c ../mongoose.c $(OUT) $(CFLAGS)
-
-mjpg: mjpg.c ../mongoose.c
-	$(CC) mjpg.c ../mongoose.c $(OUT) $(CFLAGS)
-
-
-websocket_html.c: websocket.html
-	perl mkdata.pl $< > $@
-
-u:
-	g++ unit_test.c -Wall -W -pedantic -lssl -g -O0 $(CFLAGS_EXTRA) && ./a.out
 
 clean:
-	-@$(RM) hello mjpg upload post websocket auth server multi_threaded websocket_html.c *.exe *.dSYM *.obj .*o
+	for d in $(SUBDIRS) ; do $(MAKE) -C $$d clean ; done

examples/api_server/Makefile

@@ -0,0 +1,25 @@
+PROG = api_server
+SOURCES = $(PROG).c sqlite3.c db_plugin_sqlite.c ../../mongoose.c
+CFLAGS = -W -Wall -pthread $(CFLAGS_EXTRA)
+
+ifeq ($(OS), Windows_NT)
+else
+  UNAME_S := $(shell uname -s)
+  ifeq ($(UNAME_S), Linux)
+    CFLAGS += -ldl -lm
+  endif
+endif
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I.. /MD /Fe$@
+
+test: $(PROG)
+	sh unit_test.sh $$(pwd)/$(PROG)
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/api_server/api_server.c

@@ -0,0 +1,104 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "db_plugin.h"
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+static int s_sig_num = 0;
+static void *s_db_handle = NULL;
+static const char *s_db_path = "api_server.db";
+static const struct mg_str s_get_method = MG_MK_STR("GET");
+static const struct mg_str s_put_method = MG_MK_STR("PUT");
+static const struct mg_str s_delele_method = MG_MK_STR("DELETE");
+
+static void signal_handler(int sig_num) {
+  signal(sig_num, signal_handler);
+  s_sig_num = sig_num;
+}
+
+static int has_prefix(const struct mg_str *uri, const struct mg_str *prefix) {
+  return uri->len > prefix->len && memcmp(uri->p, prefix->p, prefix->len) == 0;
+}
+
+static int is_equal(const struct mg_str *s1, const struct mg_str *s2) {
+  return s1->len == s2->len && memcmp(s1->p, s2->p, s2->len) == 0;
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  static const struct mg_str api_prefix = MG_MK_STR("/api/v1");
+  struct http_message *hm = (struct http_message *) ev_data;
+  struct mg_str key;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (has_prefix(&hm->uri, &api_prefix)) {
+        key.p = hm->uri.p + api_prefix.len;
+        key.len = hm->uri.len - api_prefix.len;
+        if (is_equal(&hm->method, &s_get_method)) {
+          db_op(nc, hm, &key, s_db_handle, API_OP_GET);
+        } else if (is_equal(&hm->method, &s_put_method)) {
+          db_op(nc, hm, &key, s_db_handle, API_OP_SET);
+        } else if (is_equal(&hm->method, &s_delele_method)) {
+          db_op(nc, hm, &key, s_db_handle, API_OP_DEL);
+        } else {
+          mg_printf(nc, "%s",
+                    "HTTP/1.0 501 Not Implemented\r\n"
+                    "Content-Length: 0\r\n\r\n");
+        }
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts); /* Serve static content */
+      }
+      break;
+    default:
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  int i;
+
+  /* Open listening socket */
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";
+
+  /* Parse command line arguments */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-D") == 0) {
+      mgr.hexdump_file = argv[++i];
+    } else if (strcmp(argv[i], "-f") == 0) {
+      s_db_path = argv[++i];
+    } else if (strcmp(argv[i], "-r") == 0) {
+      s_http_server_opts.document_root = argv[++i];
+    }
+  }
+
+  signal(SIGINT, signal_handler);
+  signal(SIGTERM, signal_handler);
+
+  /* Open database */
+  if ((s_db_handle = db_open(s_db_path)) == NULL) {
+    fprintf(stderr, "Cannot open DB [%s]\n", s_db_path);
+    exit(EXIT_FAILURE);
+  }
+
+  /* Run event loop until signal is received */
+  printf("Starting RESTful server on port %s\n", s_http_port);
+  while (s_sig_num == 0) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+
+  /* Cleanup */
+  mg_mgr_free(&mgr);
+  db_close(&s_db_handle);
+
+  printf("Exiting on signal %d\n", s_sig_num);
+
+  return 0;
+}

examples/api_server/db_plugin.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#ifndef DB_PLUGIN_HEADER_DEFINED
+#define DB_PLUGIN_HEADER_DEFINED
+
+#include "../../mongoose.h"
+
+void *db_open(const char *db_path);
+void db_close(void **db_handle);
+
+enum { API_OP_GET, API_OP_SET, API_OP_DEL };
+
+void db_op(struct mg_connection *nc, const struct http_message *hm,
+           const struct mg_str *key, void *db, int op);
+
+#endif /* DB_PLUGIN_HEADER_DEFINED */

examples/api_server/db_plugin_sqlite.c

@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "db_plugin.h"
+#include "sqlite3.h"
+
+void *db_open(const char *db_path) {
+  sqlite3 *db = NULL;
+  if (sqlite3_open_v2(db_path, &db, SQLITE_OPEN_READWRITE |
+      SQLITE_OPEN_CREATE | SQLITE_OPEN_FULLMUTEX, NULL) == SQLITE_OK) {
+    sqlite3_exec(db, "CREATE TABLE IF NOT EXISTS kv(key PRIMARY KEY, val);",
+                 0, 0, 0);
+  }
+  return db;
+}
+
+void db_close(void **db_handle) {
+  if (db_handle != NULL && *db_handle != NULL) {
+    sqlite3_close(*db_handle);
+    *db_handle = NULL;
+  }
+}
+
+static void op_set(struct mg_connection *nc, const struct http_message *hm,
+                   const struct mg_str *key, void *db) {
+  sqlite3_stmt *stmt = NULL;
+  char value[200];
+  const struct mg_str *body = hm->query_string.len > 0 ?
+    &hm->query_string : &hm->body;
+
+  mg_get_http_var(body, "value", value, sizeof(value));
+  if (sqlite3_prepare_v2(db, "INSERT OR REPLACE INTO kv VALUES (?, ?);",
+      -1, &stmt, NULL) == SQLITE_OK) {
+    sqlite3_bind_text(stmt, 1, key->p, key->len, SQLITE_STATIC);
+    sqlite3_bind_text(stmt, 2, value, strlen(value), SQLITE_STATIC);
+    sqlite3_step(stmt);
+    sqlite3_finalize(stmt);
+  }
+  mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
+}
+
+static void op_get(struct mg_connection *nc, const struct http_message *hm,
+                   const struct mg_str *key, void *db) {
+  sqlite3_stmt *stmt = NULL;
+  const char *data = NULL;
+  int result;
+  (void) hm;
+
+  if (sqlite3_prepare_v2(db, "SELECT val FROM kv WHERE key = ?;",
+      -1, &stmt, NULL) == SQLITE_OK) {
+    sqlite3_bind_text(stmt, 1, key->p, key->len, SQLITE_STATIC);
+    result = sqlite3_step(stmt);
+    data = (char *) sqlite3_column_text(stmt, 0);
+    if ((result == SQLITE_OK || result == SQLITE_ROW) && data != NULL) {
+      mg_printf(nc, "HTTP/1.1 200 OK\r\n"
+                "Content-Type: text/plain\r\n"
+                "Content-Length: %d\r\n\r\n%s",
+                (int) strlen(data), data);
+    } else {
+      mg_printf(nc, "%s", "HTTP/1.1 404 Not Found\r\n"
+                "Content-Length: 0\r\n\r\n");
+    }
+    sqlite3_finalize(stmt);
+  } else {
+    mg_printf(nc, "%s", "HTTP/1.1 500 Server Error\r\n"
+              "Content-Length: 0\r\n\r\n");
+  }
+}
+
+static void op_del(struct mg_connection *nc, const struct http_message *hm,
+                   const struct mg_str *key, void *db) {
+  sqlite3_stmt *stmt = NULL;
+  int result;
+  (void) hm;
+
+  if (sqlite3_prepare_v2(db, "DELETE FROM kv WHERE key = ?;",
+      -1, &stmt, NULL) == SQLITE_OK) {
+    sqlite3_bind_text(stmt, 1, key->p, key->len, SQLITE_STATIC);
+    result = sqlite3_step(stmt);
+    if (result == SQLITE_OK || result == SQLITE_ROW) {
+      mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n");
+    } else {
+      mg_printf(nc, "%s", "HTTP/1.1 404 Not Found\r\n"
+                "Content-Length: 0\r\n\r\n");
+    }
+    sqlite3_finalize(stmt);
+  } else {
+    mg_printf(nc, "%s", "HTTP/1.1 500 Server Error\r\n"
+              "Content-Length: 0\r\n\r\n");
+  }
+}
+
+void db_op(struct mg_connection *nc, const struct http_message *hm,
+           const struct mg_str *key, void *db, int op) {
+  switch (op) {
+    case API_OP_GET: op_get(nc, hm, key, db); break;
+    case API_OP_SET: op_set(nc, hm, key, db); break;
+    case API_OP_DEL: op_del(nc, hm, key, db); break;
+    default:
+      mg_printf(nc, "%s", "HTTP/1.0 501 Not Implemented\r\n"
+                "Content-Length: 0\r\n\r\n");
+      break;
+  }
+}
+

examples/api_server/unit_test.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+PROG=$1
+PORT=${2:-8000}  # If second param is given, this is load balancer port
+DB_FILE=/tmp/_$$.db
+URL=http://127.0.0.1:$PORT/api/v1
+
+cleanup() {
+  rm -rf $DB_FILE
+  kill -9 $PID >/dev/null 2>&1
+}
+
+#set -x
+trap cleanup EXIT
+
+cleanup
+$PROG -f $DB_FILE &
+PID=$!
+
+#sleep 1
+curl -s -X PUT -d 'value=123' $URL/foo
+curl -s -X PUT -d 'value=success' $URL/bar/baz
+
+# Fetch existing key
+RESULT=$(curl -s $URL/bar/baz)
+test "$RESULT" = "success" || exit 1
+
+# Delete it
+curl -s -X DELETE $URL/bar/baz
+
+# Make sure it's deleted - GET must result in 404
+RESULT=$(curl -s -i $URL/bar/baz | head -1 | tr -d '\r')
+test "$RESULT" = "HTTP/1.1 404 Not Found" || exit 1
+
+exit 0

examples/api_server/web_root/index.html

@@ -0,0 +1,38 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>RESTful API demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <style type="text/css">
+    * { outline: none; }
+    body {
+      background-color: #789; margin: 0;
+      padding: 0; font: 16px/1.4 Helvetica, Arial, sans-serif;
+      font: 16px/1.4 Helvetica, Arial, sans-serif;
+    }
+    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: 0.2em; }
+    a:link, a:visited { color: #69c; text-decoration: none; }
+    @media (max-width: 700px) {
+      body { background-color: #fff; }
+      div.content { width: auto; margin: 0 auto; padding: 1em; }
+    }
+</style>
+
+<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
+<script language="javascript" type="text/javascript">
+  jQuery(function() {
+  });
+</script>
+</head>
+<body>
+  <div class="content">
+    <h1>API server</h1>
+  </div>
+</body>
+</html>

examples/arduino_restful_client/Makefile

@@ -0,0 +1,2 @@
+# This "makefile" is only intended to prevent errors during main makefile execution
+all:

examples/arduino_restful_client/README.md

@@ -0,0 +1,46 @@
+# Arduino Restful Client
+
+This example demonstrates how to use [Mongoose](https://www.cesanta.com/mongoose) to send HTTP commands from Arduino.
+
+Example sends free memory size and current board uptime, but it can be modified to send any user-specific data.
+
+At the moment this example supports [Arduino Mega 2560](http://arduino.cc/en/Main/ArduinoBoardMega2560) board (and compatible) with either W5100-based
+network shield (like [Arduino Ethernet Shield](http://arduino.cc/en/Main/ArduinoEthernetShield)) or [CC3000](http://www.ti.com/product/cc3000)-based WIFI Shield.
+
+## Build and run instructions:
+
+###To run with Arduino Ethernet (W5100) shield:
+1. Add (Sketch->Add file...) the following files to sketch:
+     - /mongoose/mongoose.h
+     - /mongoose/mongoose.c
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+3. Buils and start (in console) /Users/alex/Projects/mongoose/examples/restful_server example
+4. Make `board_ip` and `board_mac` variables suitable for your network and board
+5. Change IP address in `s_target_address` variable to IP address of host running restful_server
+6. Uncomment line `#include <Ethernet.h>`
+7. Compile and flash sketch
+8. restful_server will start to show current uptime and free memory size (with 5 seconds interval)
+
+###To run with Adafruit WiFi (CC3000) shield:
+1. Add (Sketch->Add files...) the following files to sketch:
+     - /mongoose/mongoose.h
+     - /mongoose/mongoose.c
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+2. Import Adafruit CC3000 library for mongoose
+    (select Sketch->Import Library...->Add library... and point
+     /mongoose/platforms/arduino_wifi_CC3000/adafruit_CC3000_lib_mongoose folder)
+3. Buils and start (in console) /Users/alex/Projects/mongoose/examples/restful_server example
+4. Make the following variables suitable for your network
+     - `board_ip`
+     - `subnet_mask`
+     - `gateway`
+     - `dns`
+     - `wlan_ssid`
+     - `wlan_pwd`
+     - `wlan_security`
+5. Change IP address in `s_target_address` variable to IP address of host running restful_server
+6. Uncomment line `#include <Adafruit_CC3000.h>`
+8. Compile and flash sketch
+9. restful_server will start to show current uptime and free memory size (with 5 seconds interval)

examples/arduino_restful_client/arduino_restful_client.ino

@@ -0,0 +1,141 @@
+
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ * 
+ * Build and run instructions:
+ * To run with Arduino Ethernet (W5100) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add file...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Buils and run in console /Users/alex/Projects/mongoose/examples/restful_server example
+ *  3. Make board_ip and board_mac variables suitable for your network and board
+ *  4. Uncomment line #include <Ethernet.h>
+ *  5. Change IP address in s_target_address variable to IP address of host running restful_server
+ *  6. Compile & flash sketch
+ *  7. restful_server server will start to show current uptime and free memory size (with 5 second interval) 
+ *
+ * To run with Adafruit WiFi (CC3000) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add files...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Import Adafruit CC3000 library for mongoose (select Sketch->Import Library...->Add library... and point 
+ *     /mongoose/platforms/arduino_wifi_CC3000/adafruit_CC3000_lib_mongoose folder
+ *  3. Buils and run in console /Users/alex/Projects/mongoose/examples/restful_server example
+ *  4. Make the following variables suitable for your network
+ *     - board_ip
+ *     - subnet_mask
+ *     - gateway
+ *     - dns 
+ *     - wlan_ssid
+ *     - wlan_pwd
+ *     - wlan_security
+ *  5. Uncomment line #include <Adafruit_CC3000.h>
+ *  6. Compile & flash sketch
+ *  7. restful_server server will start to show current uptime and free memory size (with 5 second interval) *
+ *
+ */
+
+ 
+//#include <Ethernet.h>
+//#include <Adafruit_CC3000.h>
+#include <SPI.h>
+#include "mongoose.h"
+
+// CHANGE THESE VARIABLES
+// NB: Devices with the same address must not end up on the same network.
+// Use MAC address provided by device manufacturer (e.g. on a sticker).
+// If there isn't one, use a random one from the locally administered range.
+// See http://en.wikipedia.org/wiki/MAC_address for details.
+static uint8_t board_mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+static uint8_t board_ip[] = {192, 168, 10, 177};
+
+#ifdef WIFI_CC3000
+static uint8_t subnet_mask[] = {255, 255, 255, 0};
+static uint8_t gateway[] = {192, 168, 10, 254};
+static uint8_t dns_ip[] = {192, 168, 10, 254};
+
+static const char *wlan_ssid = "mynetwork";     
+static const char *wlan_pwd = "mypassword";
+static int wlan_security = WLAN_SEC_WPA2;
+#endif
+
+static const char *s_target_address = "192.168.10.3:8000";
+
+/////////////////////////////////////////////
+
+static const char *s_request = "/printcontent";
+
+static uint32_t IP2U32(uint8_t* iparr) {
+  return ((uint32_t)iparr[0] << 24) | ((uint32_t)iparr[1] << 16) | (iparr[2] << 8) | (iparr[3]);
+}
+
+static int get_data_to_send(char* buf, int buf_size) {
+  // Adding data to send
+  // It could be any sensor data, now just put uptime & free memory size here
+  return snprintf(buf, buf_size, "Uptime: %lus Free memory: %db",
+                  millis()/1000, get_freememsize());
+}
+static void rfc_ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  int connect_status;
+
+  switch (ev) {
+    case NS_CONNECT:
+      connect_status = * (int *) ev_data;
+
+      if (connect_status == 0) {
+        char buf[100];
+        int len = get_data_to_send(buf, sizeof(buf));
+        mg_printf(nc, "POST %s HTTP/1.0\r\nHost: %s\r\nContent-Lenght: %d"
+                  "\r\n\r\n%s", s_request, s_target_address, len, buf);
+        nc->flags |= MG_F_SEND_AND_CLOSE;
+      } else {
+        nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+      }
+      break;
+    default:
+      break;
+  }
+}
+
+static struct mg_mgr mgr;
+static struct mg_connection *nc;
+
+void setup()
+{
+  Serial.begin(9600);
+  Serial.println("Initialization...");
+#if defined(ETHERNET_W5100)
+  avr_netinit(board_mac, board_ip);
+#elif defined(WIFI_CC3000)
+  if (avr_netinit(wlan_ssid, wlan_pwd, wlan_security, IP2U32(board_ip), 
+              IP2U32(subnet_mask), IP2U32(gateway), IP2U32(dns_ip)) != 0) {
+    Serial.println("Initialization error, check network settings");
+    return;
+  };
+#endif
+
+  mg_mgr_init(&mgr, NULL);
+  Serial.println("Initialization done");  
+}
+
+void loop() {
+  nc = mg_connect(&mgr, s_target_address, rfc_ev_handler);
+  if (nc != NULL) {
+    mg_set_protocol_http_websocket(nc);
+  }
+
+  uint32_t time_to_finish = millis() + 5000;
+  while (millis() < time_to_finish) {
+    mg_mgr_poll(&mgr, 1000);  
+  }
+}
+

examples/arduino_restful_server/Makefile

@@ -0,0 +1,2 @@
+# This "makefile" is only intended to prevent errors during main makefile execution
+all:

examples/arduino_restful_server/README.md

@@ -0,0 +1,45 @@
+# Arduino Restful Server
+
+This example demonstrates how to use [Mongoose](https://www.cesanta.com/mongoose) to control Arduino
+using HTTP requests.
+Example just blinks by LED when Mongoose receives HTTP command, but it can be modified to execute any user-specific code.
+
+At the moment this example supports [Arduino Mega 2560](http://arduino.cc/en/Main/ArduinoBoardMega2560) board (and compatible) with either W5100-based
+network shield (like [Arduino Ethernet Shield](http://arduino.cc/en/Main/ArduinoEthernetShield)) or [CC3000](http://www.ti.com/product/cc3000)-based WIFI Shield.
+
+## Build and run instructions:
+
+###To run with Arduino Ethernet (W5100) shield:
+1. Add (Sketch->Add file...) the following files to sketch:
+     - /mongoose/mongoose.h
+     - /mongoose/mongoose.c
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+2. Make `board_ip` and `board_mac` variables suitable for your network and board
+3. Uncomment line `#include <Ethernet.h>`
+4. Compile and flash sketch
+5. Run `curl http://<board_ip/blink`
+   LED attached to PIN 13 will blink and board free memory size and board uptime will be displayed.
+
+
+###To run with Adafruit WiFi (CC3000) shield:
+1. Add (Sketch->Add files...) the following files to sketch:
+     - /mongoose/mongoose.h
+     - /mongoose/mongoose.c
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+2. Import Adafruit CC3000 library for mongoose
+    (select Sketch->Import Library...->Add library... and point
+     /mongoose/platforms/arduino_wifi_CC3000/adafruit_CC3000_lib_mongoose folder)
+3. Make the following variables suitable for your network
+     - `board_ip`
+     - `subnet_mask`
+     - `gateway`
+     - `dns`
+     - `wlan_ssid`
+     - `wlan_pwd`
+     - `wlan_security`
+5. Uncomment line `#include <Adafruit_CC3000.h>`
+4. Compile and flash sketch
+5. Run curl `http://<board_ip/blink`
+   LED attached to PIN 13 will blink and board free memory size and board uptime will be displayed.

examples/arduino_restful_server/arduino_restful_server.ino

@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ * 
+ * Build and run instructions:
+ * To run with Arduino Ethernet (W5100) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add file...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Make board_ip and board_mac variables suitable for your network and board
+ *  3. Uncomment line #include <Ethernet.h>
+ *  4. Compile & flash sketch
+ *  5. Run curl http://<board_ip/blink
+ *     LED attached to PIN 13 will blink and board free memory size and uptime will responsed
+ *
+ * To run with Adafruit WiFi (CC3000) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add files...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Import Adafruit CC3000 library for mongoose (select Sketch->Import Library...->Add library... and point 
+ *     /mongoose/platforms/arduino_wifi_CC3000/adafruit_CC3000_lib_mongoose folder
+ *  3. Make the following variables suitable for your network
+ *     - board_ip
+ *     - subnet_mask
+ *     - gateway
+ *     - dns 
+ *     - wlan_ssid
+ *     - wlan_pwd
+ *     - wlan_security
+ *  5. Uncomment line #include <Adafruit_CC3000.h>
+ *  4. Compile & flash sketch
+ *  5. Run curl http://<board_ip/blink
+ *     LED attached to PIN 13 will blink and board free memory size and uptime will responsed
+ *
+ */
+
+//#include <Ethernet.h>
+//#include <Adafruit_CC3000.h>
+#include <SPI.h>
+#include "mongoose.h"
+
+// CHANGE THESE VARIABLES
+// NB: Devices with the same address must not end up on the same network.
+// Use MAC address provided by device manufacturer (e.g. on a sticker).
+// If there isn't one, use a random one from the locally administered range.
+// See http://en.wikipedia.org/wiki/MAC_address for details.
+static uint8_t board_mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+
+static uint8_t board_ip[] = {192, 168, 10, 8};
+
+#ifdef WIFI_CC3000
+static uint8_t subnet_mask[] = {255, 255, 255, 0};
+static uint8_t gateway[] = {192, 168, 10, 254};
+static uint8_t dns_ip[] = {192, 168, 10, 254};
+
+static const char *wlan_ssid = "mynetwork";     
+static const char *wlan_pwd = "mypassword";
+static int wlan_security = WLAN_SEC_WPA2;
+#endif
+
+///////////////////////////////////////////////
+
+static const char *s_http_port = "60000";
+
+static uint32_t IP2U32(uint8_t* iparr) {
+  return ((uint32_t)iparr[0] << 24) | ((uint32_t)iparr[1] << 16) | (iparr[2] << 8) | (iparr[3]);
+}
+
+static void rfs_ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+  char buf[100];
+  int clen;
+
+  switch (ev) {
+    case NS_HTTP_REQUEST:      
+      if (mg_vcmp(&hm->uri, "/blink") == 0) {
+        blink(1, 500);
+      }
+
+      clen = snprintf(buf, sizeof(buf),
+                      "Free memory size: %d Uptime: %d",
+                      (int)get_freememsize(), (int)time(NULL));
+
+      mg_printf_http_chunk(nc, "HTTP/1.1 200 OK\r\n"
+                               "Content-Length: %d\r\n"
+                               "Transfer-Encoding: chunked\r\n\r\n"
+                               "%s",
+                               clen, buf);
+
+      mg_send_http_chunk(nc, "", 0);
+      break;
+    case NS_SEND:
+      nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+      break;
+      
+    default:
+      break;
+  }
+}
+
+static struct mg_connection *nc;
+static struct mg_mgr mgr;
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Initialization...");
+#if defined(ETHERNET_W5100)
+  avr_netinit(board_mac, board_ip);
+#elif defined(WIFI_CC3000)
+  if (avr_netinit(wlan_ssid, wlan_pwd, wlan_security, IP2U32(board_ip), 
+              IP2U32(subnet_mask), IP2U32(gateway), IP2U32(dns_ip)) != 0) {
+    Serial.println("Initialization error, check network settings");
+    return;
+  };
+#endif
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, rfs_ev_handler);
+  mg_set_protocol_http_websocket(nc);
+  Serial.println("Initialization done");
+}
+
+void loop() {
+  mg_mgr_poll(&mgr, 1000);
+}

examples/auth.c

@@ -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;
-}

examples/big_upload/Makefile

@@ -0,0 +1,3 @@
+PROG = big_upload
+MODULE_CFLAGS = -DMG_ENABLE_HTTP_STREAMING_MULTIPART
+include ../examples.mk

examples/big_upload/big_upload.c

@@ -0,0 +1,112 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+//
+// This example demonstrates how to handle very large requests without keeping
+// them in memory.
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "mongoose.h"
+
+static const char *s_http_port = "8000";
+
+struct file_writer_data {
+  FILE *fp;
+  size_t bytes_written;
+};
+
+static void handle_request(struct mg_connection *nc) {
+  // This handler gets for all endpoints but /upload
+  mg_printf(nc, "%s",
+            "HTTP/1.1 200 OK\r\n"
+            "Content-Type: text/html\r\n"
+            "Connection: close\r\n"
+            "\r\n"
+            "<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>");
+  nc->flags |= MG_F_SEND_AND_CLOSE;
+}
+
+static void handle_upload(struct mg_connection *nc, int ev, void *p) {
+  struct file_writer_data *data = (struct file_writer_data *) nc->user_data;
+  struct mg_http_multipart_part *mp = (struct mg_http_multipart_part*)p;
+
+  switch (ev) {
+    case MG_EV_HTTP_PART_BEGIN: {
+      if (data == NULL) {
+        data = calloc(1, sizeof(struct file_writer_data));
+        data->fp = tmpfile();
+        data->bytes_written = 0;
+
+        if (data->fp == NULL) {
+          mg_printf(nc, "%s",
+                    "HTTP/1.1 500 Failed to open a file\r\n"
+                    "Content-Length: 0\r\n\r\n");
+          nc->flags |= MG_F_SEND_AND_CLOSE;
+          return;
+        }
+        nc->user_data = (void *) data;
+      }
+      break;
+    }
+    case MG_EV_HTTP_PART_DATA: {
+      if (fwrite(mp->data.p, 1, mp->data.len, data->fp) != mp->data.len) {
+        mg_printf(nc, "%s",
+                  "HTTP/1.1 500 Failed to write to a file\r\n"
+                  "Content-Length: 0\r\n\r\n");
+        nc->flags |= MG_F_SEND_AND_CLOSE;
+        return;
+      }
+      data->bytes_written += mp->data.len;
+      break;
+    }
+    case MG_EV_HTTP_PART_END: {
+      mg_printf(nc,
+                "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(data->fp));
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      fclose(data->fp);
+      free(data);
+      nc->user_data = NULL;
+      break;
+    }
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  (void) ev_data;
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      // Invoked when the full HTTP request is in the buffer (including body).
+      handle_request(nc);
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+
+  mg_register_http_endpoint(nc, "/upload", handle_upload);
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/c#/example.cs

@@ -1,37 +0,0 @@
-// This file is part of mongoose web server project,
-// https://github.com/cesanta/mongoose
-
-using System;
-using System.Runtime.InteropServices;
-
-public class Program {
-  static private int EventHandler(MongooseEvent ev) {
-    if (ev.type != 1) {
-      return 0; // Mark as unhandled
-    }
-
-    MongooseRequestInfo request_info = (MongooseRequestInfo)
-      Marshal.PtrToStructure(ev.request_info, typeof(MongooseRequestInfo));
-
-    if (request_info.uri != "/test") {
-      return 0; // Mark as unhandled
-    }
-
-    Mongoose.write(ev.conn, "HTTP/1.1 200 OK\r\n\r\n");
-    Mongoose.write(ev.conn, "Hello from C#!\n");
-
-    return 1; // Mark as handled
-  }
-
-  static void Main() {
-    Mongoose web_server = new Mongoose(".", "9000",
-        new MongooseEventHandler(EventHandler));
-
-    Console.WriteLine("Mongoose v." + web_server.version_ + " started.");
-    Console.WriteLine("Press enter to exit program.");
-
-    // Serve requests until user presses "enter" on a keyboard
-    Console.ReadLine();
-    web_server.stop();
-  }
-}

examples/c#/mongoose.cs

@@ -1,93 +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_request_info
-[StructLayout(LayoutKind.Sequential)] public struct MongooseRequestInfo {
-  [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.LPTStr)] public string remote_user;
-  public int remote_ip;
-  public int remote_port;
-  public int is_ssl;
-  [MarshalAs(UnmanagedType.ByValArray,SizeConst=64)]
-    public MongooseHeader[] http_headers;
-};
-
-[StructLayout(LayoutKind.Sequential)] public struct MongooseEvent {
-  public int type;
-  public IntPtr user_data;
-  public IntPtr conn_data;
-  public IntPtr event_param;
-  public IntPtr conn;
-  public IntPtr request_info;
-};
-
-public delegate int MongooseEventHandlerN(ref MongooseEvent ev);
-public delegate int MongooseEventHandler(MongooseEvent ev);
-
-public class Mongoose {
-  public const string dll_name_ = "mongoose";
-  public string version_ = "??";
-
-  // These are here to store a ref to the callbacks
-  // while they are over in unmanaged code, to prevent garbage collection.
-  private event MongooseEventHandlerN delegates;
-
-  private IntPtr ctx_;
-
-  [DllImport(dll_name_)] private static extern
-    IntPtr mg_start([MarshalAs(UnmanagedType.LPArray,
-                     ArraySubType=UnmanagedType.LPTStr)] string[] options,
-                    MongooseEventHandlerN callback,
-                    IntPtr user_data);
-  [DllImport(dll_name_)] private static extern void mg_stop(IntPtr ctx);
-  [DllImport(dll_name_)] private static extern IntPtr mg_version();
-  [DllImport(dll_name_)] public static extern int mg_write(IntPtr conn,
-      string data, int length);
-
-  public Mongoose(string document_root,
-                  string listening_ports,
-                  MongooseEventHandler event_handler) {
-    version_ = Marshal.PtrToStringAnsi(mg_version());
-
-    string[] options = {
-      "document_root", document_root,
-      "listening_ports", listening_ports,
-      null
-    };
-
-    MongooseEventHandlerN cb = delegate(ref MongooseEvent ev) {
-      return event_handler(ev);
-    };
-
-    // Prevent garbage collection
-    delegates += cb;
-
-    ctx_ = mg_start(options, cb, IntPtr.Zero);
-  }
-
-  public static int write(IntPtr conn, string data) {
-    return mg_write(conn, data, data.Length);
-  }
-
-  public void stop() {
-    if (this.ctx_ != IntPtr.Zero) {
-      mg_stop(this.ctx_);
-    }
-    this.ctx_ = IntPtr.Zero;
-  }
-
-  ~Mongoose() {
-    stop();
-  }
-}

examples/captive_dns_server/Makefile

@@ -0,0 +1,4 @@
+PROG = captive_dns_server
+MODULE_CFLAGS=-DMG_ENABLE_DNS_SERVER
+
+include ../rules.mk

examples/captive_dns_server/captive_dns_server.c

@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+/*
+ * Try it out with:
+ * $ dig -t A www.google.com -4 @localhost -p 5533
+ */
+
+#include "../../mongoose.h"
+
+#include <stdio.h>
+
+static int s_exit_flag = 0;
+static in_addr_t s_our_ip_addr;
+static const char *s_listening_addr = "udp://:5533";
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct mg_dns_message *msg;
+  struct mg_dns_resource_record *rr;
+  struct mg_dns_reply reply;
+  int i;
+
+  switch (ev) {
+    case MG_DNS_MESSAGE:
+      msg = (struct mg_dns_message *) ev_data;
+      reply = mg_dns_create_reply(&nc->send_mbuf, msg);
+
+      for (i = 0; i < msg->num_questions; i++) {
+        rr = &msg->questions[i];
+        if (rr->rtype == MG_DNS_A_RECORD) {
+          mg_dns_reply_record(&reply, rr, NULL, rr->rtype, 3600,
+                              &s_our_ip_addr, 4);
+        }
+      }
+
+      /*
+       * We don't set the error flag even if there were no answers
+       * maching the MG_DNS_A_RECORD query type.
+       * This indicates that we have (syntetic) answers for MG_DNS_A_RECORD.
+       * See http://goo.gl/QWvufr for a distinction between NXDOMAIN and NODATA.
+       */
+
+      mg_dns_send_reply(nc, &reply);
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  int i;
+
+  mg_mgr_init(&mgr, NULL);
+  s_our_ip_addr = inet_addr("127.0.0.1");
+
+  /* Parse command line arguments */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-D") == 0) {
+      mgr.hexdump_file = argv[++i];
+    } else if (strcmp(argv[i], "-l") == 0 && i + 1 < argc) {
+      s_listening_addr = argv[++i];
+    } else {
+      s_our_ip_addr = inet_addr(argv[i]);
+    }
+  }
+
+  fprintf(stderr, "Listening on '%s'\n", s_listening_addr);
+  if ((nc = mg_bind(&mgr, s_listening_addr, ev_handler)) == NULL) {
+    fprintf(stderr, "cannot bind to socket\n");
+    exit(1);
+  }
+  mg_set_protocol_dns(nc);
+
+  while (s_exit_flag == 0) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/chat.c

@@ -1,15 +0,0 @@
-#include "mongoose.h"
-
-int main(void) {
-  struct mg_server *server = mg_create_server(NULL);
-  mg_set_option(server, "listening_port", "8080");
-  mg_set_option(server, "document_root", "chat_html_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;
-}

examples/chat_server/web_root/index.html

@@ -1,73 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
-  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
-<html xmlns="http://www.w3.org/1999/xhtml" lang="en" dir="ltr"> 
-  <!-- This file is part of the  Mongoose project,
-    http://code.google.com/p/mongoose -->
-  <head>
-    <title>Mongoose chat server</title>
-    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
-    <link type="text/css" rel="stylesheet" href="style.css"/>
-    <script src="jquery.js"></script>
-    <script src="main.js"></script>
-  </head>
-
-  <body>
-  <div id="header">
-    <div id="logo"></div>
-    <div class="rounded infobox help-message" id="motd">
-      Chat room implemented using
-      <a href="http://code.google.com/p/mongoose" target="_blank">Mongoose</a>
-      embeddable web server.
-      This application was written for educational purposes demonstrating
-      how web interface could be decoupled from the business logic. Not a
-      single line of HTML is generated by the server, instead, server
-      gives data to the client in JSON format.
-    </div>
-  </div>
-  <div>
-
-  <div id="middle">
-    <div><center><span id="error" class="rounded"></span><center></div>
-
-    <div id="menu">
-      <div class="menu-item left-rounded menu-item-selected"
-      	name="chat">Chat</div>
-      <div class="menu-item left-rounded" name="settings">Settings</div>
-    </div>
-
-    <div id="content" class="rounded">
-
-      <div id="chat" class="main">
-        <div class="chat-window">
-          <span class="top-rounded chat-title">Main room</span>
-          <div class="bottom-rounded chat-content">
-            <div class="message-list" id="mml">
-            </div>
-            <input type="text" size="40" class="message-input"></input>
-            <span class="help-message">
-              Type your message here and press enter</span>
-          </div>
-        </div>
-      </div>
-
-      <div id="settings" class="hidden main">
-        <div>
-          <span class="top-rounded chat-title">Settings</span>
-          <div class="bottom-rounded chat-content">
-	    <table>
-	      <tr><td>Max messages to display:</td><td>blah blah</td></tr>
-	      <tr><td>Text color:</td><td>blah blah</td></tr>
-	    </table>
-          </div>
-        </div>
-      </div>
-
-    </div>
-  </div>
-
-  <div id="footer">
-    Copyright &copy; 2004-2010 by Sergey Lyubka
-  </div>
-
-  </body>
-</html>

examples/chat_server/web_root/jquery.js

@@ -1,154 +0,0 @@
-/*!
- * jQuery JavaScript Library v1.4.2
- * http://jquery.com/
- *
- * Copyright 2010, John Resig
- * Dual licensed under the MIT or GPL Version 2 licenses.
- * http://jquery.org/license
- *
- * Includes Sizzle.js
- * http://sizzlejs.com/
- * Copyright 2010, The Dojo Foundation
- * Released under the MIT, BSD, and GPL Licenses.
- *
- * Date: Sat Feb 13 22:33:48 2010 -0500
- */
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-c.fx.stop()},stop:function(){clearInterval(W);W=null},speeds:{slow:600,fast:200,_default:400},step:{opacity:function(a){c.style(a.elem,"opacity",a.now)},_default:function(a){if(a.elem.style&&a.elem.style[a.prop]!=null)a.elem.style[a.prop]=(a.prop==="width"||a.prop==="height"?Math.max(0,a.now):a.now)+a.unit;else a.elem[a.prop]=a.now}}});if(c.expr&&c.expr.filters)c.expr.filters.animated=function(a){return c.grep(c.timers,function(b){return a===b.elem}).length};c.fn.offset="getBoundingClientRect"in s.documentElement?
-function(a){var b=this[0];if(a)return this.each(function(e){c.offset.setOffset(this,a,e)});if(!b||!b.ownerDocument)return null;if(b===b.ownerDocument.body)return c.offset.bodyOffset(b);var d=b.getBoundingClientRect(),f=b.ownerDocument;b=f.body;f=f.documentElement;return{top:d.top+(self.pageYOffset||c.support.boxModel&&f.scrollTop||b.scrollTop)-(f.clientTop||b.clientTop||0),left:d.left+(self.pageXOffset||c.support.boxModel&&f.scrollLeft||b.scrollLeft)-(f.clientLeft||b.clientLeft||0)}}:function(a){var b=
-this[0];if(a)return this.each(function(r){c.offset.setOffset(this,a,r)});if(!b||!b.ownerDocument)return null;if(b===b.ownerDocument.body)return c.offset.bodyOffset(b);c.offset.initialize();var d=b.offsetParent,f=b,e=b.ownerDocument,j,i=e.documentElement,o=e.body;f=(e=e.defaultView)?e.getComputedStyle(b,null):b.currentStyle;for(var k=b.offsetTop,n=b.offsetLeft;(b=b.parentNode)&&b!==o&&b!==i;){if(c.offset.supportsFixedPosition&&f.position==="fixed")break;j=e?e.getComputedStyle(b,null):b.currentStyle;
-k-=b.scrollTop;n-=b.scrollLeft;if(b===d){k+=b.offsetTop;n+=b.offsetLeft;if(c.offset.doesNotAddBorder&&!(c.offset.doesAddBorderForTableAndCells&&/^t(able|d|h)$/i.test(b.nodeName))){k+=parseFloat(j.borderTopWidth)||0;n+=parseFloat(j.borderLeftWidth)||0}f=d;d=b.offsetParent}if(c.offset.subtractsBorderForOverflowNotVisible&&j.overflow!=="visible"){k+=parseFloat(j.borderTopWidth)||0;n+=parseFloat(j.borderLeftWidth)||0}f=j}if(f.position==="relative"||f.position==="static"){k+=o.offsetTop;n+=o.offsetLeft}if(c.offset.supportsFixedPosition&&
-f.position==="fixed"){k+=Math.max(i.scrollTop,o.scrollTop);n+=Math.max(i.scrollLeft,o.scrollLeft)}return{top:k,left:n}};c.offset={initialize:function(){var a=s.body,b=s.createElement("div"),d,f,e,j=parseFloat(c.curCSS(a,"marginTop",true))||0;c.extend(b.style,{position:"absolute",top:0,left:0,margin:0,border:0,width:"1px",height:"1px",visibility:"hidden"});b.innerHTML="<div style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;'><div></div></div><table style='position:absolute;top:0;left:0;margin:0;border:5px solid #000;padding:0;width:1px;height:1px;' cellpadding='0' cellspacing='0'><tr><td></td></tr></table>";
-a.insertBefore(b,a.firstChild);d=b.firstChild;f=d.firstChild;e=d.nextSibling.firstChild.firstChild;this.doesNotAddBorder=f.offsetTop!==5;this.doesAddBorderForTableAndCells=e.offsetTop===5;f.style.position="fixed";f.style.top="20px";this.supportsFixedPosition=f.offsetTop===20||f.offsetTop===15;f.style.position=f.style.top="";d.style.overflow="hidden";d.style.position="relative";this.subtractsBorderForOverflowNotVisible=f.offsetTop===-5;this.doesNotIncludeMarginInBodyOffset=a.offsetTop!==j;a.removeChild(b);
-c.offset.initialize=c.noop},bodyOffset:function(a){var b=a.offsetTop,d=a.offsetLeft;c.offset.initialize();if(c.offset.doesNotIncludeMarginInBodyOffset){b+=parseFloat(c.curCSS(a,"marginTop",true))||0;d+=parseFloat(c.curCSS(a,"marginLeft",true))||0}return{top:b,left:d}},setOffset:function(a,b,d){if(/static/.test(c.curCSS(a,"position")))a.style.position="relative";var f=c(a),e=f.offset(),j=parseInt(c.curCSS(a,"top",true),10)||0,i=parseInt(c.curCSS(a,"left",true),10)||0;if(c.isFunction(b))b=b.call(a,
-d,e);d={top:b.top-e.top+j,left:b.left-e.left+i};"using"in b?b.using.call(a,d):f.css(d)}};c.fn.extend({position:function(){if(!this[0])return null;var a=this[0],b=this.offsetParent(),d=this.offset(),f=/^body|html$/i.test(b[0].nodeName)?{top:0,left:0}:b.offset();d.top-=parseFloat(c.curCSS(a,"marginTop",true))||0;d.left-=parseFloat(c.curCSS(a,"marginLeft",true))||0;f.top+=parseFloat(c.curCSS(b[0],"borderTopWidth",true))||0;f.left+=parseFloat(c.curCSS(b[0],"borderLeftWidth",true))||0;return{top:d.top-
-f.top,left:d.left-f.left}},offsetParent:function(){return this.map(function(){for(var a=this.offsetParent||s.body;a&&!/^body|html$/i.test(a.nodeName)&&c.css(a,"position")==="static";)a=a.offsetParent;return a})}});c.each(["Left","Top"],function(a,b){var d="scroll"+b;c.fn[d]=function(f){var e=this[0],j;if(!e)return null;if(f!==w)return this.each(function(){if(j=wa(this))j.scrollTo(!a?f:c(j).scrollLeft(),a?f:c(j).scrollTop());else this[d]=f});else return(j=wa(e))?"pageXOffset"in j?j[a?"pageYOffset":
-"pageXOffset"]:c.support.boxModel&&j.document.documentElement[d]||j.document.body[d]:e[d]}});c.each(["Height","Width"],function(a,b){var d=b.toLowerCase();c.fn["inner"+b]=function(){return this[0]?c.css(this[0],d,false,"padding"):null};c.fn["outer"+b]=function(f){return this[0]?c.css(this[0],d,false,f?"margin":"border"):null};c.fn[d]=function(f){var e=this[0];if(!e)return f==null?null:this;if(c.isFunction(f))return this.each(function(j){var i=c(this);i[d](f.call(this,j,i[d]()))});return"scrollTo"in
-e&&e.document?e.document.compatMode==="CSS1Compat"&&e.document.documentElement["client"+b]||e.document.body["client"+b]:e.nodeType===9?Math.max(e.documentElement["client"+b],e.body["scroll"+b],e.documentElement["scroll"+b],e.body["offset"+b],e.documentElement["offset"+b]):f===w?c.css(e,d):this.css(d,typeof f==="string"?f:f+"px")}});A.jQuery=A.$=c})(window);

examples/chat_server/web_root/login.html

@@ -1,43 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
-  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
-<html xmlns="http://www.w3.org/1999/xhtml" lang="en" dir="ltr"> 
-  <!-- This file is part of the  Mongoose project,
-    http://code.google.com/p/mongoose -->
-  <head>
-    <title>Mongoose chat: login</title>
-    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
-    <!--
-      Note that this page is self-sufficient, it does not load any other
-      CSS or Javascript file. This is done so because only this page is
-      allowed for non-authorized users. If we want to load other files
-      from the frontend, we need to change backend code to allow those
-      for non-authorized users. See chat.c :: must_authorize() function.
-    -->
-  </head>
-
-  <script>
-    window.onload = function() {
-      // Set correct action for the login form. We assume that the SSL port
-      // is the next one to insecure one.
-      var httpsPort = location.protocol.match(/https/) ? location.port :
-        parseInt(location.port) + 1;
-      document.forms[0].action = 'https://' + location.hostname + ':' +
-        httpsPort + '/authorize';
-    };
-  </script>
-
-  <body>
-    <center>
-      <h2>Mongoose chat server login</h2>
-      <div style="max-width: 30em;">
-        Username and password can be any non-empty strings.
-      </div>
-      <br/>
-      <form>
-        <input type="text" name="user"></input><br/>
-        <input type="text" name="password"></input><br/>
-        <input type="submit" value="Login"></input>
-      </form>
-    </center>
-  </body>
-</html>

examples/chat_server/web_root/main.js

@@ -1,106 +0,0 @@
-// This file is part of Mongoose project, http://code.google.com/p/mongoose
-
-var chat = {
-  // Backend URL, string.
-  // 'http://backend.address.com' or '' if backend is the same as frontend
-  backendUrl: 'api.lp',
-  maxVisibleMessages: 10,
-  errorMessageFadeOutTimeoutMs: 2000,
-  errorMessageFadeOutTimer: null,
-  lastMessageId: 0,
-  getMessagesIntervalMs: 1000,
-};
-
-chat.normalizeText = function(text) {
-  return text.replace('<', '&lt;').replace('>', '&gt;');
-};
-
-chat.refresh = function(data) {
-
-  if (data === undefined) {
-    return;
-  }
-
-  $.each(data, function(index, entry) {
-    var row = $('<div>').addClass('message-row').appendTo('#mml');
-    var timestamp = (new Date(entry.timestamp * 1000)).toLocaleTimeString();
-    $('<span>')
-      .addClass('message-timestamp')
-      .html('[' + timestamp + ']')
-      .prependTo(row);
-    $('<span>')
-      .addClass('message-user')
-      .addClass(entry.user ? '' : 'message-user-server')
-      .html(chat.normalizeText((entry.user || '[server]') + ':'))
-      .appendTo(row);
-    $('<span>')
-      .addClass('message-text')
-      .addClass(entry.user ? '' : 'message-text-server')
-      .html(chat.normalizeText(entry.text))
-      .appendTo(row);
-    chat.lastMessageId = Math.max(chat.lastMessageId, entry.id) + 1;
-  });
-
-  // Keep only chat.maxVisibleMessages, delete older ones.
-  while ($('#mml').children().length > chat.maxVisibleMessages) {
-    $('#mml div:first-child').remove();
-  }
-};
-
-chat.getMessages = function(enter_loop) {
-  $.ajax({
-    data: {last_id: chat.lastMessageId, cmd: 'get_messages'},
-    success: chat.refresh,
-    error: function() {
-    },
-  });
-  if (enter_loop) {
-    window.setTimeout('chat.getMessages(true)', chat.getMessagesIntervalMs);
-  }
-};
-
-chat.handleMenuItemClick = function(ev) {
-  $('.menu-item').removeClass('menu-item-selected');  // Deselect menu buttons
-  $(this).addClass('menu-item-selected');  // Select clicked button
-  $('.main').addClass('hidden');  // Hide all main windows
-  $('#' + $(this).attr('name')).removeClass('hidden');  // Show main window
-};
-
-chat.showError = function(message) {
-  $('#error').html(message).fadeIn('fast');
-  window.clearTimeout(chat.errorMessageFadeOutTimer);
-  chat.errorMessageFadeOutTimer = window.setTimeout(function() {
-      $('#error').fadeOut('slow');
-  }, chat.errorMessageFadeOutTimeoutMs);
-};
-
-chat.handleMessageInput = function(ev) {
-  var input = ev.target;
-  if (ev.keyCode != 13 || !input.value)
-    return;
-  //input.disabled = true;
-  $.ajax({
-    data: { text: input.value, cmd: 'send_message' },
-    success: function(ev) {
-      input.value = '';
-      input.disabled = false;
-      chat.getMessages(false);
-    },
-    error: function(ev) {
-      chat.showError('Error sending message');
-      input.disabled = false;
-    },
-  });
-};
-
-$(document).ready(function() {
-  $.ajaxSetup({
-    dataType: 'json',
-    url: chat.backendUrl
-  });
-  $('.menu-item').click(chat.handleMenuItemClick);
-  $('.message-input').keypress(chat.handleMessageInput);
-  chat.getMessages(true);
-});
-
-// vim:ts=2:sw=2:et

examples/chat_server/web_root/style.css

@@ -1,154 +0,0 @@
-/*
- * vim:ts=2:sw=2:et:ai
- */
-
-body {
-  font: 13px Arial; margin: 0.5em 1em;
-}
-
-#logo {
-  background: url('logo.png') no-repeat ;
-  width: 160px;
-  height: 40px;
-  float: left;
-}
-
-td {
-  text-align: left;
-}
-
-#motd {
-  margin-left: 170px;
-}
-
-.infobox {
-  background: #eed;
-  padding: 1px 1em;
-}
-
-.help-message {
-  color: #aaa;
-}
-
-#middle {
-  margin: 0.5em 0;
-}
-
-#error {
-  background: #c44;
-  color: white;
-  font-weight: bold;
-}
-
-#content, .menu-item-selected, .chat-title, .chat-content {
-  background: #c3d9ff;
-}
-
-#content {
-  overflow: hidden;
-  min-height: 7em;
-  padding: 1em;
-}
-
-.chat-title {
-  padding: 1px 1ex;
-}
-
-.chat-content {
- padding: 1ex;
-}
-
-.chat-window {
-}
-
-.message-row {
-  margin: 2px;
-  border-bottom: 1px solid #bbb;
-}
-
-.message-timestamp {
-  color: #484;
-}
-
-.message-user {
-  margin-left: 0.5em;
-  font-weight: bold;
-}
-
-.message-text {
-  margin-left: 0.5em;
-}
-
-.message-user-server {
-  color: purple;
-}
-
-.message-text-server {
-  font-style: italic;
-}
-
-.main {
-  padding: 0.5em;
-  background: #f0fcff;
-}
-
-#menu {
-  margin-top: 1em;
-  min-width: 7em;
-  float: left;
-}
-
-#footer {
-  position: fixed;
-  bottom: 0;
-  right: 0;
-  color: #ccc;
-  padding: 0.5em;
-}
-
-.section {
-  clear: both;
-}
-
-.hidden {
-  display: none;
-}
-
-.menu-item {
-  cursor: pointer;
-  padding: 0.1em 0.5em;
-}
-
-.menu-item-selected {
-  font-weight: bold;
-}
-
-.message-list {
-  min-height: 1em;
-  background: white;
-  margin: 0.5em 0;
-}
-
-.rounded {
-  border-radius: 6px;
-  -moz-border-radius: 6px;
-  -webkit-border-radius: 6px;
-}
-
-.left-rounded {
-  border-radius: 6px 0 0 6px;
-  -moz-border-radius: 6px 0 0 6px;
-  -webkit-border-radius: 6px 0 0 6px;
-}
-
-.bottom-rounded {
-  border-radius: 0 0 6px 6px;
-  -moz-border-radius: 0 0 6px 6px;
-  -webkit-border-radius: 0 0 6px 6px;
-}
-
-.top-rounded {
-  border-radius: 6px 6px 0 0;
-  -moz-border-radius: 6px 6px 0 0;
-  -webkit-border-radius: 6px 6px 0 0;
-}

examples/coap_client/Makefile

@@ -0,0 +1,14 @@
+PROG = coap_client
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. $(CFLAGS_EXTRA) -DMG_ENABLE_COAP
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/coap_client/coap_client.c

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ *
+ * This program sends CoAP CON-message to server (coap.me by default)
+ * and waits for answer.
+ */
+
+#include "mongoose.h"
+
+static int s_time_to_exit = 0;
+static char *s_default_address = "udp://coap.me:5683";
+
+static void coap_handler(struct mg_connection *nc, int ev, void *p) {
+  switch (ev) {
+    case MG_EV_CONNECT: {
+      struct mg_coap_message cm;
+      uint32_t res;
+
+      memset(&cm, 0, sizeof(cm));
+      cm.msg_id = 1;
+      cm.msg_type = MG_COAP_MSG_CON;
+      printf("Sending CON...\n");
+      res = mg_coap_send_message(nc, &cm);
+      if (res == 0) {
+        printf("Sent CON with msg_id = %d\n", cm.msg_id);
+      } else {
+        printf("Error: %d\n", res);
+        s_time_to_exit = 1;
+      }
+      break;
+    }
+    case MG_EV_COAP_ACK:
+    case MG_EV_COAP_RST: {
+      struct mg_coap_message *cm = (struct mg_coap_message *) p;
+      printf("ACK/RST for message with msg_id = %d received\n", cm->msg_id);
+      s_time_to_exit = 1;
+      break;
+    }
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  char *address = s_default_address;
+
+  if (argc > 1) {
+    address = argv[1];
+  }
+
+  printf("Using %s as CoAP server\n", address);
+
+  mg_mgr_init(&mgr, 0);
+
+  nc = mg_connect(&mgr, address, coap_handler);
+  if (nc == NULL) {
+    printf("Unable to connect to %s\n", address);
+    return -1;
+  }
+
+  mg_set_protocol_coap(nc);
+
+  while (!s_time_to_exit) {
+    mg_mgr_poll(&mgr, 1000000);
+  }
+
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/coap_server/Makefile

@@ -0,0 +1,14 @@
+PROG = coap_server
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. $(CFLAGS_EXTRA) -DMG_ENABLE_COAP
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/coap_server/coap_server.c

@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ *
+ * This program listens on 5683 for CoAP messages,
+ * sends ACK is nessesary and dump everything received.
+ * It is possible to use ../coap_client to send message.
+ */
+
+#include "mongoose.h"
+
+static char *s_default_address = "udp://:5683";
+static int s_sig_received = 0;
+
+static void signal_handler(int sig_num) {
+  signal(sig_num, signal_handler);
+  s_sig_received = sig_num;
+}
+
+static void coap_handler(struct mg_connection *nc, int ev, void *p) {
+  switch (ev) {
+    case MG_EV_COAP_CON: {
+      uint32_t res;
+      struct mg_coap_message *cm = (struct mg_coap_message *) p;
+      printf("CON with msg_id = %d received\n", cm->msg_id);
+      res = mg_coap_send_ack(nc, cm->msg_id);
+      if (res == 0) {
+        printf("Successfully sent ACK for message with msg_id = %d\n",
+               cm->msg_id);
+      } else {
+        printf("Error: %d\n", res);
+      }
+      break;
+    }
+    case MG_EV_COAP_NOC:
+    case MG_EV_COAP_ACK:
+    case MG_EV_COAP_RST: {
+      struct mg_coap_message *cm = (struct mg_coap_message *) p;
+      printf("ACK/RST/NOC with msg_id = %d received\n", cm->msg_id);
+      break;
+    }
+  }
+}
+
+int main() {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  signal(SIGTERM, signal_handler);
+  signal(SIGINT, signal_handler);
+
+  mg_mgr_init(&mgr, 0);
+
+  nc = mg_bind(&mgr, s_default_address, coap_handler);
+  if (nc == NULL) {
+    printf("Unable to start listener at %s\n", s_default_address);
+    return -1;
+  }
+
+  printf("Listening for CoAP messages at %s\n", s_default_address);
+
+  mg_set_protocol_coap(nc);
+
+  while (!s_sig_received) {
+    mg_mgr_poll(&mgr, 1000000);
+  }
+
+  printf("Exiting on signal %d\n", s_sig_received);
+
+  mg_mgr_free(&mgr);
+  return 0;
+}

examples/connected_device_1/Makefile

@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk

examples/connected_device_1/server.c

@@ -0,0 +1,43 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+
+static void ev_handler(struct mg_connection *nc, int ev, void *p) {
+  if (ev == MG_EV_HTTP_REQUEST) {
+    mg_serve_http(nc, p, s_http_server_opts);  // Serves static content
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/connected_device_1/web_root/index.shtml

@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - static content only</h1>
+
+    <p>
+      This page shows initial steps on how to make a device connected.
+      Mongoose serves static content from the <code>web_root</code>
+      directory. Images, CSS, HTML, JavaScript files could be dropped into the
+      <code>web_root</code> directory - and they'll be served happily
+      by Mongoose.
+    </p>
+
+    <p>
+      Below is a placeholder for the
+      settings section, and a real-time dashboard, which will be
+      implemented in the following examples.
+      Both settings section, and a dashboard section, could be organised
+      differently on this UI - for example, in different tabs. But, to
+      make the demonstration clearer, we show everything on one page.
+    </p>
+
+    <h1>Settings section</h1>
+    <p>Nothing here yet</p>
+
+    <h1>Dashboard section</h1>
+    <p>Nothing here yet</p>
+
+  </div>
+</body>
+</html>

examples/connected_device_1/web_root/style.css

@@ -0,0 +1,31 @@
+* {
+  outline: none;
+}
+
+body {
+  background-color: #36c;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}
+  

examples/connected_device_2/Makefile

@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk

examples/connected_device_2/server.c

@@ -0,0 +1,81 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+struct device_settings {
+  char setting1[100];
+  char setting2[100];
+};
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+static struct device_settings s_settings = { "value1", "value2" };
+
+static void handle_save(struct mg_connection *nc, struct http_message *hm) {
+  // Get form variables and store settings values
+  mg_get_http_var(&hm->body, "setting1", s_settings.setting1,
+                  sizeof(s_settings.setting1));
+  mg_get_http_var(&hm->body, "setting2", s_settings.setting2,
+                  sizeof(s_settings.setting2));
+
+  // Send response
+  mg_printf(nc, "%s", "HTTP/1.1 302 OK\r\nLocation: /\r\n\r\n");
+}
+
+static void handle_ssi_call(struct mg_connection *nc, const char *param) {
+  if (strcmp(param, "setting1") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting1);
+  } else if (strcmp(param, "setting2") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting2);
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (mg_vcmp(&hm->uri, "/save") == 0) {
+        handle_save(nc, hm);
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts);  // Serve static content
+      }
+      break;
+    case MG_EV_SSI_CALL:
+      handle_ssi_call(nc, ev_data);
+      break;
+    default:
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/connected_device_2/web_root/index.shtml

@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - settings section</h1>
+
+    <p>
+      This page is one of the series of examples that show how to make
+      devices connected with Mongoose. Here, we create a settings section
+      that expose some internal device variables, and allow user to change
+      them. They could be some stored in a database, in a file, or in
+      firmware RAM. In this example, we store them in RAM, and use two
+      variables, one integer and one string. We use SSI
+      <code>&lt;!--#call parameter_name --&gt;</code> directive to fetch
+      variable values from Mongoose.
+    </p>
+
+    <h1>Settings section</h1>
+    <form method="POST" action="/save">
+      <fieldset>
+        <legend>Device settings</legend>
+        <label>Setting 1:</label> <input type="text"
+          name="setting1" value="<!--#call setting1 -->" >
+        <label>Setting 2:</label> <input type="text"
+          name="setting2" value="<!--#call setting2 -->" >
+
+        <div>
+          <button type="submit">Save Settings</button>
+        </div>
+
+      </fieldset>
+    </form>
+
+    <h1>Dashboard section</h1>
+    <p>Nothing here yet</p>
+
+  </div>
+</body>
+</html>

examples/connected_device_2/web_root/style.css

@@ -0,0 +1,67 @@
+* {
+  outline: none;
+}
+
+body {
+  background: #36c;
+  color: #555;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+fieldset {
+  border: 1px solid #ccc;
+  padding: 1em;
+}
+
+fieldset legend {
+  font-style: italic;
+  color: silver;
+}
+
+fieldset label {
+  text-align: right;
+  padding: 0 1em;
+}
+
+input[type=text] {
+  font-size: 100%;
+  padding: 0.2em;
+  border: 1px solid #ccc;
+}
+
+button {
+  color: #666;
+  background: #eee;
+  border: 1px solid #ccc;
+  padding: 0.2em 2em;
+  font-size: 100%;
+  cursor: pointer;
+  margin-top: 1em;
+}
+
+button:hover {
+  background: #ccc;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}
+  

examples/connected_device_3/Makefile

@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk

examples/connected_device_3/server.c

@@ -0,0 +1,98 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+struct device_settings {
+  char setting1[100];
+  char setting2[100];
+};
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+static struct device_settings s_settings = { "value1", "value2" };
+
+static void handle_save(struct mg_connection *nc, struct http_message *hm) {
+  // Get form variables and store settings values
+  mg_get_http_var(&hm->body, "setting1", s_settings.setting1,
+                  sizeof(s_settings.setting1));
+  mg_get_http_var(&hm->body, "setting2", s_settings.setting2,
+                  sizeof(s_settings.setting2));
+
+  // Send response
+  mg_printf(nc, "%s", "HTTP/1.1 302 OK\r\nLocation: /\r\n\r\n");
+}
+
+static void handle_get_cpu_usage(struct mg_connection *nc) {
+  // Generate random value, as an example of changing CPU usage
+  // Getting real CPU usage depends on the OS.
+  int cpu_usage = (double) rand() / RAND_MAX * 100.0;
+
+  // Use chunked encoding in order to avoid calculating Content-Length
+  mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
+
+  // Output JSON object which holds CPU usage data
+  mg_printf_http_chunk(nc, "{ \"result\": %d }", cpu_usage);
+
+  // Send empty chunk, the end of response
+  mg_send_http_chunk(nc, "", 0);
+}
+
+static void handle_ssi_call(struct mg_connection *nc, const char *param) {
+  if (strcmp(param, "setting1") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting1);
+  } else if (strcmp(param, "setting2") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting2);
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (mg_vcmp(&hm->uri, "/save") == 0) {
+        handle_save(nc, hm);
+      } else if (mg_vcmp(&hm->uri, "/get_cpu_usage") == 0) {
+        handle_get_cpu_usage(nc);
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts);  // Serve static content
+      }
+      break;
+    case MG_EV_SSI_CALL:
+      handle_ssi_call(nc, ev_data);
+      break;
+    default:
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/connected_device_3/web_root/index.shtml

@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+  <script type="text/javascript" src="jquery-1.11.3.min.js"></script>
+  <script type="text/javascript" src="main.js"></script>
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - RESTful call</h1>
+
+    <p>
+      This page is one of the series of examples that show how to make
+      devices connected with Mongoose. Here we add a RESTful call
+      to the Mongoose to show CPU usage stats on a dashboard.
+      RESTful call is done using Jquery's <code>ajax</code> call.
+    </p>
+
+    <h1>Settings section</h1>
+    <form method="POST" action="/save">
+      <fieldset>
+        <legend>Device settings</legend>
+        <label>Setting 1:</label> <input type="text"
+          name="setting1" value="<!--#call setting1 -->" >
+        <label>Setting 2:</label> <input type="text"
+          name="setting2" value="<!--#call setting2 -->" >
+
+        <div>
+          <button type="submit">Save Settings</button>
+        </div>
+
+      </fieldset>
+    </form>
+
+    <h1>Dashboard section</h1>
+    <label>CPU usage:</label> <span id="cpu_usage">&nbsp;</span>
+
+  </div>
+</body>
+</html>

examples/connected_device_3/web_root/jquery-1.11.3.min.js

@@ -0,0 +1,5 @@
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examples/connected_device_3/web_root/main.js

@@ -0,0 +1,12 @@
+$(document).ready(function() {
+  // Start 1-second timer to call RESTful endpoint
+  setInterval(function() {
+    $.ajax({
+      url: '/get_cpu_usage',
+      dataType: 'json',
+      success: function(json) {
+        $('#cpu_usage').text(json.result + '% ');
+      }
+    });
+  }, 1000);
+});

examples/connected_device_3/web_root/style.css

@@ -0,0 +1,66 @@
+* {
+  outline: none;
+}
+
+body {
+  background: #36c;
+  color: #555;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+fieldset {
+  border: 1px solid #ccc;
+  padding: 1em;
+}
+
+fieldset legend {
+  font-style: italic;
+  color: silver;
+}
+
+fieldset label {
+  text-align: right;
+  padding: 0 1em;
+}
+
+input[type=text] {
+  font-size: 100%;
+  padding: 0.2em;
+  border: 1px solid #ccc;
+}
+
+button {
+  color: #666;
+  background: #eee;
+  border: 1px solid #ccc;
+  padding: 0.2em 2em;
+  font-size: 100%;
+  cursor: pointer;
+  margin-top: 1em;
+}
+
+button:hover {
+  background: #ccc;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}

examples/connected_device_4/Makefile

@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk

examples/connected_device_4/server.c

@@ -0,0 +1,115 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+struct device_settings {
+  char setting1[100];
+  char setting2[100];
+};
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+static struct device_settings s_settings = { "value1", "value2" };
+
+static void handle_save(struct mg_connection *nc, struct http_message *hm) {
+  // Get form variables and store settings values
+  mg_get_http_var(&hm->body, "setting1", s_settings.setting1,
+                  sizeof(s_settings.setting1));
+  mg_get_http_var(&hm->body, "setting2", s_settings.setting2,
+                  sizeof(s_settings.setting2));
+
+  // Send response
+  mg_printf(nc, "%s", "HTTP/1.1 302 OK\r\nLocation: /\r\n\r\n");
+}
+
+static void handle_get_cpu_usage(struct mg_connection *nc) {
+  // Generate random value, as an example of changing CPU usage
+  // Getting real CPU usage depends on the OS.
+  int cpu_usage = (double) rand() / RAND_MAX * 100.0;
+
+  // Use chunked encoding in order to avoid calculating Content-Length
+  mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
+
+  // Output JSON object which holds CPU usage data
+  mg_printf_http_chunk(nc, "{ \"result\": %d }", cpu_usage);
+
+  // Send empty chunk, the end of response
+  mg_send_http_chunk(nc, "", 0);
+}
+
+static void handle_ssi_call(struct mg_connection *nc, const char *param) {
+  if (strcmp(param, "setting1") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting1);
+  } else if (strcmp(param, "setting2") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting2);
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (mg_vcmp(&hm->uri, "/save") == 0) {
+        handle_save(nc, hm);
+      } else if (mg_vcmp(&hm->uri, "/get_cpu_usage") == 0) {
+        handle_get_cpu_usage(nc);
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts);  // Serve static content
+      }
+      break;
+    case MG_EV_SSI_CALL:
+      handle_ssi_call(nc, ev_data);
+      break;
+    default:
+      break;
+  }
+}
+
+static void push_data_to_all_websocket_connections(struct mg_mgr *m) {
+  struct mg_connection *c;
+  int memory_usage = (double) rand() / RAND_MAX * 100.0;
+
+  for (c = mg_next(m, NULL); c != NULL; c = mg_next(m, c)) {
+    if (c->flags & MG_F_IS_WEBSOCKET) {
+      mg_printf_websocket_frame(c, WEBSOCKET_OP_TEXT, "%d", memory_usage);
+    }
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    static time_t last_time;
+    time_t now = time(NULL);
+    mg_mgr_poll(&mgr, 1000);
+    if (now - last_time > 0) {
+      push_data_to_all_websocket_connections(&mgr);
+      last_time = now;
+    }
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/connected_device_4/web_root/index.shtml

@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+  <script type="text/javascript" src="jquery-1.11.3.min.js"></script>
+  <script src="jquery.flot.min.js"></script>
+  <script src="jquery.flot.time.js"></script>
+  <script type="text/javascript" src="main.js"></script>
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - Websocket push</h1>
+
+    <p>
+      This page is one of the series of examples that show how to make
+      devices connected with Mongoose. Here we add a real-time Websocket
+      server push, and update dashboard graph as data arrives.
+    </p>
+
+    <h1>Settings section</h1>
+    <form method="POST" action="/save">
+      <fieldset>
+        <legend>Device settings</legend>
+        <label>Setting 1:</label> <input type="text"
+          name="setting1" value="<!--#call setting1 -->" >
+        <label>Setting 2:</label> <input type="text"
+          name="setting2" value="<!--#call setting2 -->" >
+
+        <div>
+          <button type="submit">Save Settings</button>
+        </div>
+
+      </fieldset>
+    </form>
+
+    <h1>Dashboard section</h1>
+    <label>CPU usage:</label> <span id="cpu_usage">&nbsp;</span>
+    <div id="graphs"></div>
+
+  </div>
+</body>
+</html>

examples/connected_device_4/web_root/jquery-1.11.3.min.js

@@ -0,0 +1,5 @@
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examples/connected_device_4/web_root/jquery.flot.min.js

@@ -0,0 +1,8 @@
+/* Javascript plotting library for jQuery, version 0.8.3.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+*/
+(function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<c.length;++i)o[c.charAt(i)]+=d;return o.normalize()};o.scale=function(c,f){for(var i=0;i<c.length;++i)o[c.charAt(i)]*=f;return o.normalize()};o.toString=function(){if(o.a>=1){return"rgb("+[o.r,o.g,o.b].join(",")+")"}else{return"rgba("+[o.r,o.g,o.b,o.a].join(",")+")"}};o.normalize=function(){function clamp(min,value,max){return value<min?min:value>max?max:value}o.r=clamp(0,parseInt(o.r),255);o.g=clamp(0,parseInt(o.g),255);o.b=clamp(0,parseInt(o.b),255);o.a=clamp(0,o.a,1);return o};o.clone=function(){return $.color.make(o.r,o.b,o.g,o.a)};return o.normalize()};$.color.extract=function(elem,css){var c;do{c=elem.css(css).toLowerCase();if(c!=""&&c!="transparent")break;elem=elem.parent()}while(elem.length&&!$.nodeName(elem.get(0),"body"));if(c=="rgba(0, 0, 0, 0)")c="transparent";return $.color.parse(c)};$.color.parse=function(str){var res,m=$.color.make;if(res=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10));if(res=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10),parseFloat(res[4]));if(res=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55);if(res=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55,parseFloat(res[4]));if(res=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1],16),parseInt(res[2],16),parseInt(res[3],16));if(res=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1]+res[1],16),parseInt(res[2]+res[2],16),parseInt(res[3]+res[3],16));var name=$.trim(str).toLowerCase();if(name=="transparent")return m(255,255,255,0);else{res=lookupColors[name]||[0,0,0];return m(res[0],res[1],res[2])}};var lookupColors={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);(function($){var hasOwnProperty=Object.prototype.hasOwnProperty;if(!$.fn.detach){$.fn.detach=function(){return this.each(function(){if(this.parentNode){this.parentNode.removeChild(this)}})}}function Canvas(cls,container){var element=container.children("."+cls)[0];if(element==null){element=document.createElement("canvas");element.className=cls;$(element).css({direction:"ltr",position:"absolute",left:0,top:0}).appendTo(container);if(!element.getContext){if(window.G_vmlCanvasManager){element=window.G_vmlCanvasManager.initElement(element)}else{throw new Error("Canvas is not available. If you're using IE with a fall-back such as Excanvas, then there's either a mistake in your conditional include, or the page has no DOCTYPE and is rendering in Quirks Mode.")}}}this.element=element;var context=this.context=element.getContext("2d");var devicePixelRatio=window.devicePixelRatio||1,backingStoreRatio=context.webkitBackingStorePixelRatio||context.mozBackingStorePixelRatio||context.msBackingStorePixelRatio||context.oBackingStorePixelRatio||context.backingStorePixelRatio||1;this.pixelRatio=devicePixelRatio/backingStoreRatio;this.resize(container.width(),container.height());this.textContainer=null;this.text={};this._textCache={}}Canvas.prototype.resize=function(width,height){if(width<=0||height<=0){throw new Error("Invalid dimensions for plot, width = "+width+", height = "+height)}var element=this.element,context=this.context,pixelRatio=this.pixelRatio;if(this.width!=width){element.width=width*pixelRatio;element.style.width=width+"px";this.width=width}if(this.height!=height){element.height=height*pixelRatio;element.style.height=height+"px";this.height=height}context.restore();context.save();context.scale(pixelRatio,pixelRatio)};Canvas.prototype.clear=function(){this.context.clearRect(0,0,this.width,this.height)};Canvas.prototype.render=function(){vaLine truncated
+if(yrange.from==null)yrange.from=yrange.axis.min;if(yrange.to==null)yrange.to=yrange.axis.max;if(xrange.to<xrange.axis.min||xrange.from>xrange.axis.max||yrange.to<yrange.axis.min||yrange.from>yrange.axis.max)continue;xrange.from=Math.max(xrange.from,xrange.axis.min);xrange.to=Math.min(xrange.to,xrange.axis.max);yrange.from=Math.max(yrange.from,yrange.axis.min);yrange.to=Math.min(yrange.to,yrange.axis.max);var xequal=xrange.from===xrange.to,yequal=yrange.from===yrange.to;if(xequal&&yequal){continue}xrange.from=Math.floor(xrange.axis.p2c(xrange.from));xrange.to=Math.floor(xrange.axis.p2c(xrange.to));yrange.from=Math.floor(yrange.axis.p2c(yrange.from));yrange.to=Math.floor(yrange.axis.p2c(yrange.to));if(xequal||yequal){var lineWidth=m.lineWidth||options.grid.markingsLineWidth,subPixel=lineWidth%2?.5:0;ctx.beginPath();ctx.strokeStyle=m.color||options.grid.markingsColor;ctx.lineWidth=lineWidth;if(xequal){ctx.moveTo(xrange.to+subPixel,yrange.from);ctx.lineTo(xrange.to+subPixel,yrange.to)}else{ctx.moveTo(xrange.from,yrange.to+subPixel);ctx.lineTo(xrange.to,yrange.to+subPixel)}ctx.stroke()}else{ctx.fillStyle=m.color||options.grid.markingsColor;ctx.fillRect(xrange.from,yrange.to,xrange.to-xrange.from,yrange.from-yrange.to)}}}axes=allAxes();bw=options.grid.borderWidth;for(var j=0;j<axes.length;++j){var axis=axes[j],box=axis.box,t=axis.tickLength,x,y,xoff,yoff;if(!axis.show||axis.ticks.length==0)continue;ctx.lineWidth=1;if(axis.direction=="x"){x=0;if(t=="full")y=axis.position=="top"?0:plotHeight;else y=box.top-plotOffset.top+(axis.position=="top"?box.height:0)}else{y=0;if(t=="full")x=axis.position=="left"?0:plotWidth;else x=box.left-plotOffset.left+(axis.position=="left"?box.width:0)}if(!axis.innermost){ctx.strokeStyle=axis.options.color;ctx.beginPath();xoff=yoff=0;if(axis.direction=="x")xoff=plotWidth+1;else yoff=plotHeight+1;if(ctx.lineWidth==1){if(axis.direction=="x"){y=Math.floor(y)+.5}else{x=Math.floor(x)+.5}}ctx.moveTo(x,y);ctx.lineTo(x+xoff,y+yoff);ctx.stroke()}ctx.strokeStyle=axis.options.tickColor;ctx.beginPath();for(i=0;i<axis.ticks.length;++i){var v=axis.ticks[i].v;xoff=yoff=0;if(isNaN(v)||v<axis.min||v>axis.max||t=="full"&&(typeof bw=="object"&&bw[axis.position]>0||bw>0)&&(v==axis.min||v==axis.max))continue;if(axis.direction=="x"){x=axis.p2c(v);yoff=t=="full"?-plotHeight:t;if(axis.position=="top")yoff=-yoff}else{y=axis.p2c(v);xoff=t=="full"?-plotWidth:t;if(axis.position=="left")xoff=-xoff}if(ctx.lineWidth==1){if(axis.direction=="x")x=Math.floor(x)+.5;else y=Math.floor(y)+.5}ctx.moveTo(x,y);ctx.lineTo(x+xoff,y+yoff)}ctx.stroke()}if(bw){bc=options.grid.borderColor;if(typeof bw=="object"||typeof bc=="object"){if(typeof bw!=="object"){bw={top:bw,right:bw,bottom:bw,left:bw}}if(typeof bc!=="object"){bc={top:bc,right:bc,bottom:bc,left:bc}}if(bw.top>0){ctx.strokeStyle=bc.top;ctx.lineWidth=bw.top;ctx.beginPath();ctx.moveTo(0-bw.left,0-bw.top/2);ctx.lineTo(plotWidth,0-bw.top/2);ctx.stroke()}if(bw.right>0){ctx.strokeStyle=bc.right;ctx.lineWidth=bw.right;ctx.beginPath();ctx.moveTo(plotWidth+bw.right/2,0-bw.top);ctx.lineTo(plotWidth+bw.right/2,plotHeight);ctx.stroke()}if(bw.bottom>0){ctx.strokeStyle=bc.bottom;ctx.lineWidth=bw.bottom;ctx.beginPath();ctx.moveTo(plotWidth+bw.right,plotHeight+bw.bottom/2);ctx.lineTo(0,plotHeight+bw.bottom/2);ctx.stroke()}if(bw.left>0){ctx.strokeStyle=bc.left;ctx.lineWidth=bw.left;ctx.beginPath();ctx.moveTo(0-bw.left/2,plotHeight+bw.bottom);ctx.lineTo(0-bw.left/2,0);ctx.stroke()}}else{ctx.lineWidth=bw;ctx.strokeStyle=options.grid.borderColor;ctx.strokeRect(-bw/2,-bw/2,plotWidth+bw,plotHeight+bw)}}ctx.restore()}function drawAxisLabels(){$.each(allAxes(),function(_,axis){var box=axis.box,legacyStyles=axis.direction+"Axis "+axis.direction+axis.n+"Axis",layer="flot-"+axis.direction+"-axis flot-"+axis.direction+axis.n+"-axis "+legacyStyles,font=axis.options.font||"flot-tick-label tickLabel",tick,x,y,halign,valign;surface.removeText(layer);if(!axis.show||axis.ticks.length==0)return;for(var i=0;i<axis.ticks.length;++i){tick=axis.ticks[i];if(!tick.label||tick.v<axis.min||tick.v>axis.max)continue;if(axis.direction=="x"){halign="center";x=plotOffset.left+axis.p2c(tick.v);if(axis.position=="bottom"){y=box.top+box.padding}else{y=box.top+box.height-box.padding;valign="bottom"}}else{valign="middle";y=plotOffset.top+axis.p2c(tick.v);if(axis.position=="left"){x=box.left+box.width-box.padding;halign="right"}else{x=box.left+box.padding}}surface.addText(layer,x,y,tick.label,font,null,null,halign,valign)}})}function drawSeries(series){if(series.lines.show)drawSeriesLines(series);if(series.bars.show)drawSeriesBars(series);if(series.points.show)drawSeriesPoints(series)}function drawSeriesLines(series){function plotLine(datapoints,xoffset,yoffset,axisx,axisy){var points=datapoints.points,ps=datapoints.pointsize,prevx=null,prevy=null;ctx.beginPath();for(var i=ps;i<points.length;i+=ps){var x1=points[i-ps],y1=points[i-ps+1],x2=points[i],y2=points[i+1];if(x1==null||x2==null)continue;if(y1<=y2&&y1<axisy.min){if(y2<axLine truncated

examples/connected_device_4/web_root/jquery.flot.time.js

@@ -0,0 +1,432 @@
+/* Pretty handling of time axes.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+Set axis.mode to "time" to enable. See the section "Time series data" in
+API.txt for details.
+
+*/
+
+(function($) {
+
+	var options = {
+		xaxis: {
+			timezone: null,		// "browser" for local to the client or timezone for timezone-js
+			timeformat: null,	// format string to use
+			twelveHourClock: false,	// 12 or 24 time in time mode
+			monthNames: null	// list of names of months
+		}
+	};
+
+	// round to nearby lower multiple of base
+
+	function floorInBase(n, base) {
+		return base * Math.floor(n / base);
+	}
+
+	// Returns a string with the date d formatted according to fmt.
+	// A subset of the Open Group's strftime format is supported.
+
+	function formatDate(d, fmt, monthNames, dayNames) {
+
+		if (typeof d.strftime == "function") {
+			return d.strftime(fmt);
+		}
+
+		var leftPad = function(n, pad) {
+			n = "" + n;
+			pad = "" + (pad == null ? "0" : pad);
+			return n.length == 1 ? pad + n : n;
+		};
+
+		var r = [];
+		var escape = false;
+		var hours = d.getHours();
+		var isAM = hours < 12;
+
+		if (monthNames == null) {
+			monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
+		}
+
+		if (dayNames == null) {
+			dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
+		}
+
+		var hours12;
+
+		if (hours > 12) {
+			hours12 = hours - 12;
+		} else if (hours == 0) {
+			hours12 = 12;
+		} else {
+			hours12 = hours;
+		}
+
+		for (var i = 0; i < fmt.length; ++i) {
+
+			var c = fmt.charAt(i);
+
+			if (escape) {
+				switch (c) {
+					case 'a': c = "" + dayNames[d.getDay()]; break;
+					case 'b': c = "" + monthNames[d.getMonth()]; break;
+					case 'd': c = leftPad(d.getDate()); break;
+					case 'e': c = leftPad(d.getDate(), " "); break;
+					case 'h':	// For back-compat with 0.7; remove in 1.0
+					case 'H': c = leftPad(hours); break;
+					case 'I': c = leftPad(hours12); break;
+					case 'l': c = leftPad(hours12, " "); break;
+					case 'm': c = leftPad(d.getMonth() + 1); break;
+					case 'M': c = leftPad(d.getMinutes()); break;
+					// quarters not in Open Group's strftime specification
+					case 'q':
+						c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
+					case 'S': c = leftPad(d.getSeconds()); break;
+					case 'y': c = leftPad(d.getFullYear() % 100); break;
+					case 'Y': c = "" + d.getFullYear(); break;
+					case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
+					case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
+					case 'w': c = "" + d.getDay(); break;
+				}
+				r.push(c);
+				escape = false;
+			} else {
+				if (c == "%") {
+					escape = true;
+				} else {
+					r.push(c);
+				}
+			}
+		}
+
+		return r.join("");
+	}
+
+	// To have a consistent view of time-based data independent of which time
+	// zone the client happens to be in we need a date-like object independent
+	// of time zones.  This is done through a wrapper that only calls the UTC
+	// versions of the accessor methods.
+
+	function makeUtcWrapper(d) {
+
+		function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
+			sourceObj[sourceMethod] = function() {
+				return targetObj[targetMethod].apply(targetObj, arguments);
+			};
+		};
+
+		var utc = {
+			date: d
+		};
+
+		// support strftime, if found
+
+		if (d.strftime != undefined) {
+			addProxyMethod(utc, "strftime", d, "strftime");
+		}
+
+		addProxyMethod(utc, "getTime", d, "getTime");
+		addProxyMethod(utc, "setTime", d, "setTime");
+
+		var props = ["Date", "Day", "FullYear", "Hours", "Milliseconds", "Minutes", "Month", "Seconds"];
+
+		for (var p = 0; p < props.length; p++) {
+			addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
+			addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
+		}
+
+		return utc;
+	};
+
+	// select time zone strategy.  This returns a date-like object tied to the
+	// desired timezone
+
+	function dateGenerator(ts, opts) {
+		if (opts.timezone == "browser") {
+			return new Date(ts);
+		} else if (!opts.timezone || opts.timezone == "utc") {
+			return makeUtcWrapper(new Date(ts));
+		} else if (typeof timezoneJS != "undefined" && typeof timezoneJS.Date != "undefined") {
+			var d = new timezoneJS.Date();
+			// timezone-js is fickle, so be sure to set the time zone before
+			// setting the time.
+			d.setTimezone(opts.timezone);
+			d.setTime(ts);
+			return d;
+		} else {
+			return makeUtcWrapper(new Date(ts));
+		}
+	}
+	
+	// map of app. size of time units in milliseconds
+
+	var timeUnitSize = {
+		"second": 1000,
+		"minute": 60 * 1000,
+		"hour": 60 * 60 * 1000,
+		"day": 24 * 60 * 60 * 1000,
+		"month": 30 * 24 * 60 * 60 * 1000,
+		"quarter": 3 * 30 * 24 * 60 * 60 * 1000,
+		"year": 365.2425 * 24 * 60 * 60 * 1000
+	};
+
+	// the allowed tick sizes, after 1 year we use
+	// an integer algorithm
+
+	var baseSpec = [
+		[1, "second"], [2, "second"], [5, "second"], [10, "second"],
+		[30, "second"], 
+		[1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
+		[30, "minute"], 
+		[1, "hour"], [2, "hour"], [4, "hour"],
+		[8, "hour"], [12, "hour"],
+		[1, "day"], [2, "day"], [3, "day"],
+		[0.25, "month"], [0.5, "month"], [1, "month"],
+		[2, "month"]
+	];
+
+	// we don't know which variant(s) we'll need yet, but generating both is
+	// cheap
+
+	var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
+		[1, "year"]]);
+	var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
+		[1, "year"]]);
+
+	function init(plot) {
+		plot.hooks.processOptions.push(function (plot, options) {
+			$.each(plot.getAxes(), function(axisName, axis) {
+
+				var opts = axis.options;
+
+				if (opts.mode == "time") {
+					axis.tickGenerator = function(axis) {
+
+						var ticks = [];
+						var d = dateGenerator(axis.min, opts);
+						var minSize = 0;
+
+						// make quarter use a possibility if quarters are
+						// mentioned in either of these options
+
+						var spec = (opts.tickSize && opts.tickSize[1] ===
+							"quarter") ||
+							(opts.minTickSize && opts.minTickSize[1] ===
+							"quarter") ? specQuarters : specMonths;
+
+						if (opts.minTickSize != null) {
+							if (typeof opts.tickSize == "number") {
+								minSize = opts.tickSize;
+							} else {
+								minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
+							}
+						}
+
+						for (var i = 0; i < spec.length - 1; ++i) {
+							if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]]
+											  + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
+								&& spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
+								break;
+							}
+						}
+
+						var size = spec[i][0];
+						var unit = spec[i][1];
+
+						// special-case the possibility of several years
+
+						if (unit == "year") {
+
+							// if given a minTickSize in years, just use it,
+							// ensuring that it's an integer
+
+							if (opts.minTickSize != null && opts.minTickSize[1] == "year") {
+								size = Math.floor(opts.minTickSize[0]);
+							} else {
+
+								var magn = Math.pow(10, Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
+								var norm = (axis.delta / timeUnitSize.year) / magn;
+
+								if (norm < 1.5) {
+									size = 1;
+								} else if (norm < 3) {
+									size = 2;
+								} else if (norm < 7.5) {
+									size = 5;
+								} else {
+									size = 10;
+								}
+
+								size *= magn;
+							}
+
+							// minimum size for years is 1
+
+							if (size < 1) {
+								size = 1;
+							}
+						}
+
+						axis.tickSize = opts.tickSize || [size, unit];
+						var tickSize = axis.tickSize[0];
+						unit = axis.tickSize[1];
+
+						var step = tickSize * timeUnitSize[unit];
+
+						if (unit == "second") {
+							d.setSeconds(floorInBase(d.getSeconds(), tickSize));
+						} else if (unit == "minute") {
+							d.setMinutes(floorInBase(d.getMinutes(), tickSize));
+						} else if (unit == "hour") {
+							d.setHours(floorInBase(d.getHours(), tickSize));
+						} else if (unit == "month") {
+							d.setMonth(floorInBase(d.getMonth(), tickSize));
+						} else if (unit == "quarter") {
+							d.setMonth(3 * floorInBase(d.getMonth() / 3,
+								tickSize));
+						} else if (unit == "year") {
+							d.setFullYear(floorInBase(d.getFullYear(), tickSize));
+						}
+
+						// reset smaller components
+
+						d.setMilliseconds(0);
+
+						if (step >= timeUnitSize.minute) {
+							d.setSeconds(0);
+						}
+						if (step >= timeUnitSize.hour) {
+							d.setMinutes(0);
+						}
+						if (step >= timeUnitSize.day) {
+							d.setHours(0);
+						}
+						if (step >= timeUnitSize.day * 4) {
+							d.setDate(1);
+						}
+						if (step >= timeUnitSize.month * 2) {
+							d.setMonth(floorInBase(d.getMonth(), 3));
+						}
+						if (step >= timeUnitSize.quarter * 2) {
+							d.setMonth(floorInBase(d.getMonth(), 6));
+						}
+						if (step >= timeUnitSize.year) {
+							d.setMonth(0);
+						}
+
+						var carry = 0;
+						var v = Number.NaN;
+						var prev;
+
+						do {
+
+							prev = v;
+							v = d.getTime();
+							ticks.push(v);
+
+							if (unit == "month" || unit == "quarter") {
+								if (tickSize < 1) {
+
+									// a bit complicated - we'll divide the
+									// month/quarter up but we need to take
+									// care of fractions so we don't end up in
+									// the middle of a day
+
+									d.setDate(1);
+									var start = d.getTime();
+									d.setMonth(d.getMonth() +
+										(unit == "quarter" ? 3 : 1));
+									var end = d.getTime();
+									d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
+									carry = d.getHours();
+									d.setHours(0);
+								} else {
+									d.setMonth(d.getMonth() +
+										tickSize * (unit == "quarter" ? 3 : 1));
+								}
+							} else if (unit == "year") {
+								d.setFullYear(d.getFullYear() + tickSize);
+							} else {
+								d.setTime(v + step);
+							}
+						} while (v < axis.max && v != prev);
+
+						return ticks;
+					};
+
+					axis.tickFormatter = function (v, axis) {
+
+						var d = dateGenerator(v, axis.options);
+
+						// first check global format
+
+						if (opts.timeformat != null) {
+							return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
+						}
+
+						// possibly use quarters if quarters are mentioned in
+						// any of these places
+
+						var useQuarters = (axis.options.tickSize &&
+								axis.options.tickSize[1] == "quarter") ||
+							(axis.options.minTickSize &&
+								axis.options.minTickSize[1] == "quarter");
+
+						var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
+						var span = axis.max - axis.min;
+						var suffix = (opts.twelveHourClock) ? " %p" : "";
+						var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
+						var fmt;
+
+						if (t < timeUnitSize.minute) {
+							fmt = hourCode + ":%M:%S" + suffix;
+						} else if (t < timeUnitSize.day) {
+							if (span < 2 * timeUnitSize.day) {
+								fmt = hourCode + ":%M" + suffix;
+							} else {
+								fmt = "%b %d " + hourCode + ":%M" + suffix;
+							}
+						} else if (t < timeUnitSize.month) {
+							fmt = "%b %d";
+						} else if ((useQuarters && t < timeUnitSize.quarter) ||
+							(!useQuarters && t < timeUnitSize.year)) {
+							if (span < timeUnitSize.year) {
+								fmt = "%b";
+							} else {
+								fmt = "%b %Y";
+							}
+						} else if (useQuarters && t < timeUnitSize.year) {
+							if (span < timeUnitSize.year) {
+								fmt = "Q%q";
+							} else {
+								fmt = "Q%q %Y";
+							}
+						} else {
+							fmt = "%Y";
+						}
+
+						var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);
+
+						return rt;
+					};
+				}
+			});
+		});
+	}
+
+	$.plot.plugins.push({
+		init: init,
+		options: options,
+		name: 'time',
+		version: '1.0'
+	});
+
+	// Time-axis support used to be in Flot core, which exposed the
+	// formatDate function on the plot object.  Various plugins depend
+	// on the function, so we need to re-expose it here.
+
+	$.plot.formatDate = formatDate;
+	$.plot.dateGenerator = dateGenerator;
+
+})(jQuery);

examples/connected_device_4/web_root/main.js

@@ -0,0 +1,75 @@
+$(document).ready(function() {
+  // Start 1-second timer to call RESTful endpoint
+  setInterval(function() {
+    $.ajax({
+      url: '/get_cpu_usage',
+      dataType: 'json',
+      success: function(json) {
+        $('#cpu_usage').text(json.result + '% ');
+      }
+    });
+  }, 1000);
+
+  // Initialize graph
+  var $c = $('<div class="graph"/>').appendTo('#graphs');
+  var dur = 120;
+  var past = Date.now() - dur * 1000;
+  var options = {
+    lines: {
+      fill: true,
+      lineWidth: 0,
+      fillColor: {colors: [ { opacity: 0 }, { opacity: 1 } ] }
+    },
+    grid: { borderWidth: 1, borderColor: '#ccc'},
+    xaxis: { mode: 'time', ticks: 5 },
+    legend: { labelBoxBorderColor: '#fff' },
+    colors: [ '#fec', '#396', '#e39', '9e2' ],
+    hooks: {
+      draw: [function(plot, canvas) {
+        canvas.font = '13px sans-serif';
+        canvas.fillStyle = '#aaa';
+        canvas.fillText('Resource Usage', 35, 25);
+      }]
+    }
+  };
+  var plot = $.plot($c, [], options);
+
+  var updateGraph = function(counter) {
+    var data = plot.getData();
+    var now = Date.now();
+    var oldest = now - dur * 1000;
+    data[0] = {
+      show: false,
+      data: [[oldest, null], [now, null]]
+    };
+
+    console.log(data);
+
+    // Remove old points
+    $.each(data, function(di, d) {
+      while (d.data.length > 0 && d.data[0][0] < oldest) {
+        d.data.shift();
+      }
+    });
+
+    // Add new points
+    var new_datapoint = [now, counter];
+    if (data[1]) {
+      data[1].label = 'memory';
+      data[1].data.push(new_datapoint);
+    } else {
+      data[1] = [{ data: [new_datapoint] }];
+    }
+
+    // Redraw the graph
+    plot.setData(data);
+    plot.setupGrid();
+    plot.draw();
+  };
+
+  // Create Websocket connection. For simplicity, no reconnect logic is here.
+  var ws = new WebSocket('ws://' + location.host);
+  ws.onmessage = function(ev) {
+    updateGraph(ev.data);
+  };
+});

examples/connected_device_4/web_root/style.css

@@ -0,0 +1,87 @@
+* {
+  outline: none;
+}
+
+body {
+  background: #36c;
+  color: #555;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+fieldset {
+  border: 1px solid #ccc;
+  padding: 1em;
+}
+
+fieldset legend {
+  font-style: italic;
+  color: silver;
+}
+
+fieldset label {
+  text-align: right;
+  padding: 0 1em;
+}
+
+input[type=text] {
+  font-size: 100%;
+  padding: 0.2em;
+  border: 1px solid #ccc;
+}
+
+button {
+  color: #666;
+  background: #eee;
+  border: 1px solid #ccc;
+  padding: 0.2em 2em;
+  font-size: 100%;
+  cursor: pointer;
+  margin-top: 1em;
+}
+
+button:hover {
+  background: #ccc;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}
+
+#graphs {
+  margin-top: 1em;
+}
+
+.graph {
+  min-height: 12em;
+  border: 0px solid #ccc;
+  position: relative;
+  margin: 0 1em 1em 0;
+  width: 36em;
+  display: inline-block;
+}
+
+.graph_title {
+  position: absolute;
+  top: 0.5em; left: 1em;
+  color: #ccc;
+  font-weight: bold;
+  z-index: 999;
+}

examples/examples.mk

@@ -0,0 +1,13 @@
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -g -W -Wall -I../.. -Wno-unused-function $(CFLAGS_EXTRA) $(MODULE_CFLAGS)
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/file.c

@@ -1,47 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include "mongoose.h"
-
-
-static int index_html(struct mg_connection *conn) {
-  FILE *fp = (FILE *) conn->connection_param;
-  char buf[200];
-  size_t n = 0;
-
-  if (fp == NULL) {
-    fp = fopen("../mongoose.c", "r");
-    conn->connection_param = (void *) fp;
-  }
-
-  if (fp != NULL) {
-    n = fread(buf, 1, sizeof(buf), fp);
-    mg_send_data(conn, buf, n);
-
-    if (n < sizeof(buf) || conn->wsbits != 0) {
-      fclose(fp);
-      conn->connection_param = NULL;
-    }
-  }
-
-  return n < sizeof(buf) ? MG_REQUEST_PROCESSED : MG_REQUEST_CALL_AGAIN;
-}
-
-int main(void) {
-  struct mg_server *server;
-
-  // Create and configure the server
-  server = mg_create_server(NULL);
-  mg_set_option(server, "listening_port", "8080");
-  mg_set_request_handler(server, index_html);
-
-  // 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;
-}

examples/hello.c

@@ -1,35 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include "mongoose.h"
-
-static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
-  int result = MG_FALSE;
-
-  if (ev == MG_REQUEST) {
-    mg_printf_data(conn, "Hello! Requested URI is [%s]", conn->uri);
-    result = MG_TRUE;
-  } else if (ev == MG_AUTH) {
-    result = MG_TRUE;
-  }
-
-  return result;
-}
-
-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;
-}

examples/http_client/Makefile

@@ -0,0 +1,14 @@
+PROG = http_client
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. -DMG_ENABLE_SSL -lssl -lcrypto -pthread $(CFLAGS_EXTRA)
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/http_client/http_client.c

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ *
+ * This program fetches HTTP URLs.
+ */
+
+#include "mongoose.h"
+
+static int s_exit_flag = 0;
+static int s_show_headers = 0;
+static const char *s_show_headers_opt = "--show-headers";
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_CONNECT:
+      if (* (int *) ev_data != 0) {
+        fprintf(stderr, "connect() failed: %s\n", strerror(* (int *) ev_data));
+        s_exit_flag = 1;
+      }
+      break;
+    case MG_EV_HTTP_REPLY:
+      nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+      if (s_show_headers) {
+        fwrite(hm->message.p, 1, hm->message.len, stdout);
+      } else {
+        fwrite(hm->body.p, 1, hm->body.len, stdout);
+      }
+      putchar('\n');
+      s_exit_flag = 1;
+      break;
+    default:
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  int i;
+
+  mg_mgr_init(&mgr, NULL);
+
+  /* Process command line arguments */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], s_show_headers_opt) == 0) {
+      s_show_headers = 1;
+    } else if (strcmp(argv[i], "--hexdump") == 0 && i + 1 < argc) {
+      mgr.hexdump_file = argv[++i];
+    } else {
+      break;
+    }
+  }
+
+  if (i + 1 != argc) {
+    fprintf(stderr, "Usage: %s [%s] [--hexdump <file>] <URL>\n",
+            argv[0], s_show_headers_opt);
+    exit(EXIT_FAILURE);
+  }
+
+  mg_connect_http(&mgr, ev_handler, argv[i], NULL, NULL);
+
+  while (s_exit_flag == 0) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/http_client/http_client.vcxproj

@@ -0,0 +1,163 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\mongoose.c">
+      <WarningLevel Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">TurnOffAllWarnings</WarningLevel>
+      <WarningLevel Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">TurnOffAllWarnings</WarningLevel>
+    </ClCompile>
+    <ClCompile Include="http_client.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\mongoose.h" />
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{BDF3FC6F-2658-4A27-846D-6A45FB53C602}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>http_client</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;MG_ENABLE_THREADS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>./../../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;MG_ENABLE_THREADS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>./../../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

examples/jni/Android.mk

@@ -1,12 +0,0 @@
-LOCAL_PATH := $(call my-dir)/../..
-include $(CLEAR_VARS)
-
-# To build with lua support, uncomment two lines below:
-#LUA_SOURCES := build/lua_5.2.1.c build/sqlite3.c build/lsqlite3.c
-#LUA_FLAGS := -I$(LOCAL_PATH)/build -DTHREADSAFE=1 -DSQLITE_ENABLE_FTS3 -DSQLITE_ENABLE_FTS3_PARENTHESIS -DUSE_LUA -DUSE_LUA_SQLITE3 -DLUA_COMPAT_ALL -D"getlocaledecpoint() ='.'"
-
-LOCAL_CFLAGS    := -std=c99 -O2 -W -Wall -pthread -pipe $(LUA_FLAGS) $(COPT)
-LOCAL_MODULE    := mongoose
-LOCAL_SRC_FILES := examples/server.c mongoose.c $(LUA_SOURCES)
-
-include $(BUILD_EXECUTABLE)

examples/json_rpc_server/Makefile

@@ -0,0 +1,14 @@
+PROG = json_rpc_server
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. -pthread $(CFLAGS_EXTRA)
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/json_rpc_server/json_rpc_server.c

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ *
+ * To test this server, do
+ *   $ curl -d '{"id":1,method:"sum",params:[22,33]}' 127.0.0.1:8000
+ */
+
+#include "mongoose.h"
+
+static const char *s_http_port = "8000";
+
+static int rpc_sum(char *buf, int len, struct mg_rpc_request *req) {
+  double sum = 0;
+  int i;
+
+  if (req->params[0].type != JSON_TYPE_ARRAY) {
+    return mg_rpc_create_std_error(buf, len, req,
+                                   JSON_RPC_INVALID_PARAMS_ERROR);
+  }
+
+  for (i = 0; i < req->params[0].num_desc; i++) {
+    if (req->params[i + 1].type != JSON_TYPE_NUMBER) {
+      return mg_rpc_create_std_error(buf, len, req,
+                                     JSON_RPC_INVALID_PARAMS_ERROR);
+    }
+    sum += strtod(req->params[i + 1].ptr, NULL);
+  }
+  return mg_rpc_create_reply(buf, len, req, "f", sum);
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+  static const char *methods[] = { "sum", NULL };
+  static mg_rpc_handler_t handlers[] = { rpc_sum, NULL };
+  char buf[100];
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      mg_rpc_dispatch(hm->body.p, hm->body.len, buf, sizeof(buf),
+                      methods, handlers);
+      mg_printf(nc, "HTTP/1.0 200 OK\r\nContent-Length: %d\r\n"
+                "Content-Type: application/json\r\n\r\n%s",
+                (int) strlen(buf), buf);
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      break;
+    default:
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  mg_set_protocol_http_websocket(nc);
+
+  printf("Starting JSON-RPC server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/load_balancer/Dockerfile

@@ -0,0 +1,10 @@
+FROM cesanta/mongoose
+
+COPY load_balancer.c /mongoose/
+WORKDIR /mongoose
+RUN mkdir /mongoose/certs; \
+    sed -i 's:#include "../../mongoose.h":#include "mongoose.h":' load_balancer.c; \
+    cc load_balancer.c mongoose.c -o load_balancer -W -Wall -pthread -DMG_ENABLE_SSL -lssl -lcrypto
+EXPOSE 8000
+VOLUME ["/mongoose/certs"]
+ENTRYPOINT ["/mongoose/load_balancer"]

examples/load_balancer/Makefile

@@ -0,0 +1,39 @@
+# To build with SSL under windows, do:
+# wine make load_balancer.exe SSL=openssl  # OpenSSL build
+# wine make load_balancer.exe SSL=krypton  # Krypton build
+
+PROG = load_balancer
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -pthread $(CFLAGS_EXTRA)
+
+ifeq ($(SSL), openssl)
+  OPENSSL_PATH = ./openssl-0.9.8
+  CFLAGS_EXTRA += -DMG_ENABLE_SSL -I$(OPENSSL_PATH)/include
+	CFLAGS_EXTRA += /link /libpath:$(OPENSSL_PATH)/lib ssleay32.lib libeay32.lib
+endif
+
+ifeq ($(SSL), krypton)
+	KRYPTON_PATH = ../../../krypton
+  CFLAGS_EXTRA += -DMG_ENABLE_SSL $(KRYPTON_PATH)/krypton.c -I$(KRYPTON_PATH)
+endif
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I.. /MD /Fe$@ /DMG_ENABLE_THREADS advapi32.lib $(CFLAGS_EXTRA)
+
+test: $(PROG)
+	$(MAKE) -C ../api_server
+	sh unit_test.sh $$(pwd)/$(PROG)
+
+docker-build:
+	docker build -t cesanta/load_balancer .
+
+docker-push:
+	docker push cesanta/load_balancer
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/load_balancer/README.md

@@ -0,0 +1,44 @@
+# Mongoose-based HTTP load balancer
+
+## Configuration
+
+Load balancer is configured with command-line flags.
+
+### Global flags
+
+* `-p port` – TCP port to listen on. Default: 8000.
+* `-l log_file` – path to the log file. Default: none.
+* `-s ssl_cert` – path to SSL certificate. Default: none.
+
+### Backend configuration
+
+Main flag is `-b uri_prefix host_port` – it adds a new backend for a given
+URI prefix. Example: `-b /stuff/ 127.0.0.1:8080` will route all requests that
+start with '/stuff/' to a backend at port 8080 on localhost. There is a special
+syntax for `uri_prefix` that allows you to change the URIs that get passed to
+backends:
+
+* `-b /stuff/=/ 127.0.0.1:8080` – for '/stuff/thing' backend will see '/thing'.
+* `-b /stuff/=/other/ 127.0.0.1:8080` – '/stuff/thing' => '/other/thing'.
+
+Also there are few per-backend flags that can be placed before `-b` and apply
+only to the next backend:
+
+* `-r` – instead of proxying requests load balancer will reply with 302 
+redirect.
+* `-v vhost` – match not only URI prefix but 'Host:' header as well.
+
+### Example
+
+```
+load_balancer -s path/to/cert.pem \
+  -v example.com -b /site/=/ 127.0.0.1:8080 \
+  -b /static/ 127.0.0.1:8081 \
+  -b /static/ 127.0.0.1:8082
+``` 
+
+In this example requests to 'example.com/site/' will be forwarded to the
+backend on port 8080 with '/site' prefix stripped off and requests to
+'/static/' on any virtual host will be balanced in round-robin fashion between
+backends on ports 8081 and 8082.
+

examples/load_balancer/load_balancer.c

@@ -0,0 +1,645 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "../../mongoose.h"
+#include <sys/queue.h>
+
+#define MAX_IDLE_CONNS 5
+#define CONN_IDLE_TIMEOUT 30
+
+struct http_backend;
+
+struct be_conn {
+  struct http_backend *be;
+  struct mg_connection *nc;
+  time_t idle_deadline;
+
+  STAILQ_ENTRY(be_conn) conns;
+};
+
+STAILQ_HEAD(be_conn_list_head, be_conn);
+struct http_backend {
+  const char *vhost;      /* NULL if any host */
+  const char *uri_prefix; /* URI prefix, e.g. "/api/v1/", "/static/" */
+  const char *uri_prefix_replacement; /* if not NULL, will replace uri_prefix in
+                                         requests to backends */
+  const char *host_port;              /* Backend address */
+  int redirect;                       /* if true redirect instead of proxy */
+  int usage_counter; /* Number of times this backend was chosen */
+
+  struct be_conn_list_head conns;
+  int num_conns;
+};
+
+struct peer {
+  struct mg_connection *nc;
+  int64_t body_len;  /* Size of the HTTP body to forward */
+  int64_t body_sent; /* Number of bytes already forwarded */
+  struct {
+    /* Headers have been sent, no more headers. */
+    unsigned int headers_sent : 1;
+    unsigned int keep_alive : 1;
+  } flags;
+};
+
+struct conn_data {
+  struct be_conn *be_conn; /* Chosen backend */
+  struct peer client;      /* Client peer */
+  struct peer backend;     /* Backend peer */
+  time_t last_activity;
+};
+
+static const char *s_error_500 = "HTTP/1.1 500 Failed\r\n";
+static const char *s_content_len_0 = "Content-Length: 0\r\n";
+static const char *s_connection_close = "Connection: close\r\n";
+static const char *s_http_port = "8000";
+static struct http_backend s_vhost_backends[100], s_default_backends[100];
+static int s_num_vhost_backends = 0, s_num_default_backends = 0;
+static int s_sig_num = 0;
+static int s_backend_keepalive = 0;
+static FILE *s_log_file = NULL;
+#ifdef MG_ENABLE_SSL
+const char *s_ssl_cert = NULL;
+#endif
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data);
+static void write_log(const char *fmt, ...);
+
+static void signal_handler(int sig_num) {
+  signal(sig_num, signal_handler);
+  s_sig_num = sig_num;
+}
+
+static void send_http_err(struct mg_connection *nc, const char *err_line) {
+  mg_printf(nc, "%s%s%s\r\n", err_line, s_content_len_0, s_connection_close);
+}
+
+static void respond_with_error(struct conn_data *conn, const char *err_line) {
+  struct mg_connection *nc = conn->client.nc;
+  int headers_sent = conn->client.flags.headers_sent;
+#ifdef DEBUG
+  write_log("conn=%p nc=%p respond_with_error %d\n", conn, nc, headers_sent);
+#endif
+  if (nc == NULL) return;
+  if (!headers_sent) {
+    send_http_err(nc, err_line);
+    conn->client.flags.headers_sent = 1;
+  }
+  nc->flags |= MG_F_SEND_AND_CLOSE;
+}
+
+static int has_prefix(const struct mg_str *uri, const char *prefix) {
+  size_t prefix_len = strlen(prefix);
+  return uri->len >= prefix_len && memcmp(uri->p, prefix, prefix_len) == 0;
+}
+
+static int matches_vhost(const struct mg_str *host, const char *vhost) {
+  size_t vhost_len;
+  if (vhost == NULL) {
+    return 1;
+  }
+  vhost_len = strlen(vhost);
+  return host->len == vhost_len && memcmp(host->p, vhost, vhost_len) == 0;
+}
+
+static void write_log(const char *fmt, ...) {
+  va_list ap;
+  if (s_log_file != NULL) {
+    va_start(ap, fmt);
+    vfprintf(s_log_file, fmt, ap);
+    fflush(s_log_file);
+    va_end(ap);
+  }
+}
+
+static struct http_backend *choose_backend_from_list(
+    struct http_message *hm, struct http_backend *backends, int num_backends) {
+  int i;
+  struct mg_str vhost = {"", 0};
+  const struct mg_str *host = mg_get_http_header(hm, "host");
+  if (host != NULL) vhost = *host;
+
+  const char *vhost_end = vhost.p;
+
+  while (vhost_end < vhost.p + vhost.len && *vhost_end != ':') {
+    vhost_end++;
+  }
+  vhost.len = vhost_end - vhost.p;
+
+  struct http_backend *chosen = NULL;
+  for (i = 0; i < num_backends; i++) {
+    struct http_backend *be = &backends[i];
+    if (has_prefix(&hm->uri, be->uri_prefix) &&
+        matches_vhost(&vhost, be->vhost) &&
+        (chosen == NULL ||
+         /* Prefer most specific URI prefixes */
+         strlen(be->uri_prefix) > strlen(chosen->uri_prefix) ||
+         /* Among prefixes of the same length chose the least used. */
+         (strlen(be->uri_prefix) == strlen(chosen->uri_prefix) &&
+          be->usage_counter < chosen->usage_counter))) {
+      chosen = be;
+    }
+  }
+
+  return chosen;
+}
+
+static struct http_backend *choose_backend(struct http_message *hm) {
+  struct http_backend *chosen =
+      choose_backend_from_list(hm, s_vhost_backends, s_num_vhost_backends);
+
+  /* Nothing was chosen for this vhost, look for vhost == NULL backends. */
+  if (chosen == NULL) {
+    chosen = choose_backend_from_list(hm, s_default_backends,
+                                      s_num_default_backends);
+  }
+
+  if (chosen != NULL) chosen->usage_counter++;
+
+  return chosen;
+}
+
+static void forward_body(struct peer *src, struct peer *dst) {
+  struct mbuf *src_io = &src->nc->recv_mbuf;
+  if (src->body_sent < src->body_len) {
+    size_t to_send = src->body_len - src->body_sent;
+    if (src_io->len < to_send) {
+      to_send = src_io->len;
+    }
+    mg_send(dst->nc, src_io->buf, to_send);
+    src->body_sent += to_send;
+    mbuf_remove(src_io, to_send);
+  }
+#ifdef DEBUG
+  write_log("forward_body %p (ka=%d) -> %p sent %d of %d\n", src->nc,
+            src->flags.keep_alive, dst->nc, src->body_sent, src->body_len);
+#endif
+}
+
+static void forward(struct conn_data *conn, struct http_message *hm,
+                    struct peer *src_peer, struct peer *dst_peer) {
+  struct mg_connection *src = src_peer->nc;
+  struct mg_connection *dst = dst_peer->nc;
+  struct mbuf *io = &src->recv_mbuf;
+  int i;
+  int is_request = (src_peer == &conn->client);
+  src_peer->body_len = hm->body.len;
+  struct http_backend *be = conn->be_conn->be;
+
+  if (is_request) {
+    /* Write rewritten request line. */
+    size_t trim_len = strlen(be->uri_prefix);
+    mg_printf(dst, "%.*s%s%.*s\r\n", (int) (hm->uri.p - io->buf), io->buf,
+              be->uri_prefix_replacement,
+              (int) (hm->proto.p + hm->proto.len - (hm->uri.p + trim_len)),
+              hm->uri.p + trim_len);
+  } else {
+    /* Reply line goes without modification */
+    mg_printf(dst, "%.*s %d %.*s\r\n", (int) hm->proto.len, hm->proto.p,
+              (int) hm->resp_code, (int) hm->resp_status_msg.len,
+              hm->resp_status_msg.p);
+  }
+
+  /* Headers. */
+  for (i = 0; i < MG_MAX_HTTP_HEADERS && hm->header_names[i].len > 0; i++) {
+    struct mg_str hn = hm->header_names[i];
+    struct mg_str hv = hm->header_values[i];
+#ifdef MG_ENABLE_SSL
+    /*
+     * If we terminate SSL and backend redirects to local HTTP port,
+     * strip protocol to let client use HTTPS.
+     * TODO(lsm): web page content may also contain local HTTP references,
+     * they need to be rewritten too.
+     */
+    if (mg_vcasecmp(&hn, "Location") == 0 && s_ssl_cert != NULL) {
+      size_t hlen = strlen(be->host_port);
+      const char *hp = be->host_port, *p = memchr(hp, ':', hlen);
+
+      if (p == NULL) {
+        p = hp + hlen;
+      }
+
+      if (mg_ncasecmp(hv.p, "http://", 7) == 0 &&
+          mg_ncasecmp(hv.p + 7, hp, (p - hp)) == 0) {
+        mg_printf(dst, "Location: %.*s\r\n", (int) (hv.len - (7 + (p - hp))),
+                  hv.p + 7 + (p - hp));
+        continue;
+      }
+    }
+#endif
+
+    /* We always rewrite the connection header depending on the settings. */
+    if (mg_vcasecmp(&hn, "Connection") == 0) continue;
+
+    /* Don't pass chunked transfer encoding to the client */
+    if (mg_vcasecmp(&hn, "Transfer-encoding") == 0 &&
+        mg_vcasecmp(&hv, "chunked") == 0) {
+      continue;
+    }
+
+    mg_printf(dst, "%.*s: %.*s\r\n", (int) hn.len, hn.p, (int) hv.len, hv.p);
+  }
+
+  /* Emit the connection header. */
+  const char *connection_mode = "close";
+  if (dst_peer == &conn->backend) {
+    if (s_backend_keepalive) connection_mode = "keep-alive";
+  } else {
+    if (conn->client.flags.keep_alive) connection_mode = "keep-alive";
+  }
+  mg_printf(dst, "Connection: %s\r\n", connection_mode);
+
+  mg_printf(dst, "%s", "\r\n");
+
+  mbuf_remove(io, hm->body.p - hm->message.p); /* We've forwarded headers */
+  dst_peer->flags.headers_sent = 1;
+
+  forward_body(src_peer, dst_peer);
+}
+
+struct be_conn *get_conn(struct http_backend *be) {
+  if (STAILQ_EMPTY(&be->conns)) return NULL;
+  struct be_conn *result = STAILQ_FIRST(&be->conns);
+  STAILQ_REMOVE_HEAD(&be->conns, conns);
+  be->num_conns--;
+  return result;
+}
+
+/*
+ * choose_backend parses incoming HTTP request and routes it to the appropriate
+ * backend. It assumes that clients don't do HTTP pipelining, handling only
+ * one request request for each connection. To give a hint to backend about
+ * this it inserts "Connection: close" header into each forwarded request.
+ */
+static int connect_backend(struct conn_data *conn, struct http_message *hm) {
+  struct mg_connection *nc = conn->client.nc;
+  struct http_backend *be = choose_backend(hm);
+
+  write_log("%.*s %.*s backend=%s\n", (int) hm->method.len, hm->method.p,
+            (int) hm->uri.len, hm->uri.p, be ? be->host_port : "not defined");
+
+  if (be == NULL) return 0;
+  if (be->redirect != 0) {
+    mg_printf(nc, "HTTP/1.1 302 Found\r\nLocation: %s\r\n\r\n", be->host_port);
+    return 1;
+  }
+  struct be_conn *bec = get_conn(be);
+  if (bec != NULL) {
+    bec->nc->handler = ev_handler;
+#ifdef DEBUG
+    write_log("conn=%p to %p (%s) reusing bec=%p\n", conn, be, be->host_port,
+              bec);
+#endif
+  } else {
+    bec = malloc(sizeof(*conn->be_conn));
+    memset(bec, 0, sizeof(*bec));
+    bec->nc = mg_connect(nc->mgr, be->host_port, ev_handler);
+#ifdef DEBUG
+    write_log("conn=%p new conn to %p (%s) bec=%p\n", conn, be, be->host_port,
+              bec);
+#endif
+    if (bec->nc == NULL) {
+      free(bec);
+      write_log("Connection to [%s] failed\n", be->host_port);
+      return 0;
+    }
+  }
+  bec->be = be;
+  conn->be_conn = bec;
+  conn->backend.nc = bec->nc;
+  conn->backend.nc->user_data = conn;
+  mg_set_protocol_http_websocket(conn->backend.nc);
+  return 1;
+}
+
+static int is_keep_alive(struct http_message *hm) {
+  const struct mg_str *connection_header = mg_get_http_header(hm, "Connection");
+  if (connection_header == NULL) {
+    /* HTTP/1.1 connections are keep-alive by default. */
+    if (mg_vcasecmp(&hm->proto, "HTTP/1.1") != 0) return 0;
+  } else if (mg_vcasecmp(connection_header, "keep-alive") != 0) {
+    return 0;
+  }
+  // We must also have Content-Length.
+  return mg_get_http_header(hm, "Content-Length") != NULL;
+}
+
+static void idle_backend_handler(struct mg_connection *nc, int ev,
+                                 void *ev_data) {
+  (void) ev_data; /* Unused. */
+  struct be_conn *bec = nc->user_data;
+  const time_t now = time(NULL);
+#ifdef DEBUG
+  write_log("%d idle bec=%p nc=%p ev=%d deadline=%d\n", now, bec, nc, ev,
+            bec->idle_deadline);
+#endif
+  switch (ev) {
+    case MG_EV_POLL: {
+      if (bec->idle_deadline > 0 && now > bec->idle_deadline) {
+#ifdef DEBUG
+        write_log("bec=%p nc=%p closing due to idleness\n", bec, bec->nc);
+#endif
+        bec->nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+      }
+      break;
+    }
+
+    case MG_EV_CLOSE: {
+#ifdef DEBUG
+      write_log("bec=%p closed\n", bec);
+#endif
+      if (bec->idle_deadline > 0) {
+        STAILQ_REMOVE(&bec->be->conns, bec, be_conn, conns);
+      }
+      free(bec);
+      break;
+    }
+  }
+}
+
+void release_backend(struct conn_data *conn) {
+  /* Disassociate the backend, put back on the pool. */
+  struct be_conn *bec = conn->be_conn;
+  conn->be_conn = NULL;
+  if (bec->nc == NULL) {
+    free(bec);
+    memset(&conn->backend, 0, sizeof(conn->backend));
+    return;
+  }
+  struct http_backend *be = bec->be;
+  bec->nc->user_data = bec;
+  bec->nc->handler = idle_backend_handler;
+  if (conn->backend.flags.keep_alive) {
+    bec->idle_deadline = time(NULL) + CONN_IDLE_TIMEOUT;
+    STAILQ_INSERT_TAIL(&be->conns, bec, conns);
+#ifdef DEBUG
+    write_log("bec=%p becoming idle\n", bec);
+#endif
+    be->num_conns++;
+    while (be->num_conns > MAX_IDLE_CONNS) {
+      bec = STAILQ_FIRST(&be->conns);
+      STAILQ_REMOVE_HEAD(&be->conns, conns);
+      be->num_conns--;
+      bec->idle_deadline = 0;
+      bec->nc->flags = MG_F_CLOSE_IMMEDIATELY;
+#ifdef DEBUG
+      write_log("bec=%p evicted\n", bec);
+#endif
+    }
+  } else {
+    bec->idle_deadline = 0;
+    bec->nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+  }
+  memset(&conn->backend, 0, sizeof(conn->backend));
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct conn_data *conn = (struct conn_data *) nc->user_data;
+  const time_t now = time(NULL);
+#ifdef DEBUG
+  write_log("%d conn=%p nc=%p ev=%d ev_data=%p bec=%p bec_nc=%p\n", now, conn,
+            nc, ev, ev_data, conn != NULL ? conn->be_conn : NULL,
+            conn != NULL && conn->be_conn != NULL ? conn->be_conn->nc : NULL);
+#endif
+
+  if (conn == NULL) {
+    if (ev == MG_EV_ACCEPT) {
+      conn = calloc(1, sizeof(*conn));
+      if (conn == NULL) {
+        send_http_err(nc, s_error_500);
+      } else {
+        memset(conn, 0, sizeof(*conn));
+        nc->user_data = conn;
+        conn->client.nc = nc;
+        conn->client.body_len = -1;
+        conn->backend.body_len = -1;
+        conn->last_activity = now;
+      }
+      return;
+    } else {
+      if (ev != MG_EV_POLL) {
+        nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+      }
+      return;
+    }
+  }
+
+  if (ev != MG_EV_POLL) conn->last_activity = now;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST: { /* From client */
+      assert(conn != NULL);
+      assert(conn->be_conn == NULL);
+      struct http_message *hm = (struct http_message *) ev_data;
+      conn->client.flags.keep_alive = is_keep_alive(hm);
+
+      if (!connect_backend(conn, hm)) {
+        respond_with_error(conn, s_error_500);
+        break;
+      }
+
+      if (conn->backend.nc == NULL) {
+        /* This is a redirect, we're done. */
+        conn->client.nc->flags |= MG_F_SEND_AND_CLOSE;
+        break;
+      }
+
+      forward(conn, hm, &conn->client, &conn->backend);
+      break;
+    }
+
+    case MG_EV_CONNECT: { /* To backend */
+      assert(conn != NULL);
+      assert(conn->be_conn != NULL);
+      int status = *(int *) ev_data;
+      if (status != 0) {
+        write_log("Error connecting to %s: %d (%s)\n",
+                  conn->be_conn->be->host_port, status, strerror(status));
+        /* TODO(lsm): mark backend as defunct, try it later on */
+        respond_with_error(conn, s_error_500);
+        conn->be_conn->nc = NULL;
+        release_backend(conn);
+        break;
+      }
+      break;
+    }
+
+    case MG_EV_HTTP_REPLY: { /* From backend */
+      assert(conn != NULL);
+      struct http_message *hm = (struct http_message *) ev_data;
+      conn->backend.flags.keep_alive = s_backend_keepalive && is_keep_alive(hm);
+      forward(conn, hm, &conn->backend, &conn->client);
+      release_backend(conn);
+      if (!conn->client.flags.keep_alive) {
+        conn->client.nc->flags |= MG_F_SEND_AND_CLOSE;
+      } else {
+#ifdef DEBUG
+        write_log("conn=%p remains open\n", conn);
+#endif
+      }
+      break;
+    }
+
+    case MG_EV_POLL: {
+      assert(conn != NULL);
+      if (now - conn->last_activity > CONN_IDLE_TIMEOUT &&
+          conn->backend.nc == NULL /* not waiting for backend */) {
+#ifdef DEBUG
+        write_log("conn=%p has been idle for too long\n", conn);
+        conn->client.nc->flags |= MG_F_SEND_AND_CLOSE;
+#endif
+      }
+      break;
+    }
+
+    case MG_EV_CLOSE: {
+      assert(conn != NULL);
+      if (nc == conn->client.nc) {
+#ifdef DEBUG
+        write_log("conn=%p nc=%p client closed, body_sent=%d\n", conn, nc,
+                  conn->backend.body_sent);
+#endif
+        conn->client.nc = NULL;
+        if (conn->backend.nc != NULL) {
+          conn->backend.nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+        }
+      } else if (nc == conn->backend.nc) {
+#ifdef DEBUG
+        write_log("conn=%p nc=%p backend closed\n", conn, nc);
+#endif
+        conn->backend.nc = NULL;
+        if (conn->client.nc != NULL &&
+            (conn->backend.body_len < 0 ||
+             conn->backend.body_sent < conn->backend.body_len)) {
+          write_log("Backend %s disconnected.\n", conn->be_conn->be->host_port);
+          respond_with_error(conn, s_error_500);
+        }
+      }
+      if (conn->client.nc == NULL && conn->backend.nc == NULL) {
+        free(conn);
+      }
+      break;
+    }
+  }
+}
+
+static void print_usage_and_exit(const char *prog_name) {
+  fprintf(stderr,
+          "Usage: %s [-D debug_dump_file] [-p http_port] [-l log] [-k]"
+#if MG_ENABLE_SSL
+          "[-s ssl_cert] "
+#endif
+          "<[-r] [-v vhost] -b uri_prefix[=replacement] host_port> ... \n",
+          prog_name);
+  exit(EXIT_FAILURE);
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  int i, redirect = 0;
+  const char *vhost = NULL;
+
+  mg_mgr_init(&mgr, NULL);
+
+  /* Parse command line arguments */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-D") == 0) {
+      mgr.hexdump_file = argv[i + 1];
+      i++;
+    } else if (strcmp(argv[i], "-k") == 0) {
+      s_backend_keepalive = 1;
+    } else if (strcmp(argv[i], "-l") == 0 && i + 1 < argc) {
+      if (strcmp(argv[i + 1], "-") == 0) {
+        s_log_file = stdout;
+      } else {
+        s_log_file = fopen(argv[i + 1], "a");
+        if (s_log_file == NULL) {
+          perror("fopen");
+          exit(EXIT_FAILURE);
+        }
+      }
+      i++;
+    } else if (strcmp(argv[i], "-p") == 0) {
+      s_http_port = argv[i + 1];
+      i++;
+    } else if (strcmp(argv[i], "-r") == 0 && i + 1 < argc) {
+      redirect = 1;
+    } else if (strcmp(argv[i], "-v") == 0 && i + 1 < argc) {
+      if (strcmp(argv[i + 1], "") == 0) {
+        vhost = NULL;
+      } else {
+        vhost = argv[i + 1];
+      }
+      i++;
+    } else if (strcmp(argv[i], "-b") == 0 && i + 2 < argc) {
+      struct http_backend *be =
+          vhost != NULL ? &s_vhost_backends[s_num_vhost_backends++]
+                        : &s_default_backends[s_num_default_backends++];
+      STAILQ_INIT(&be->conns);
+      char *r = NULL;
+      be->vhost = vhost;
+      be->uri_prefix = argv[i + 1];
+      be->host_port = argv[i + 2];
+      be->redirect = redirect;
+      be->uri_prefix_replacement = be->uri_prefix;
+      if ((r = strchr(be->uri_prefix, '=')) != NULL) {
+        *r = '\0';
+        be->uri_prefix_replacement = r + 1;
+      }
+      printf(
+          "Adding backend for %s%s : %s "
+          "[redirect=%d,prefix_replacement=%s]\n",
+          be->vhost == NULL ? "" : be->vhost, be->uri_prefix, be->host_port,
+          be->redirect, be->uri_prefix_replacement);
+      vhost = NULL;
+      redirect = 0;
+      i += 2;
+#ifdef MG_ENABLE_SSL
+    } else if (strcmp(argv[i], "-s") == 0 && i + 1 < argc) {
+      s_ssl_cert = argv[++i];
+#endif
+    } else {
+      print_usage_and_exit(argv[0]);
+    }
+  }
+
+  /* Open listening socket */
+  if ((nc = mg_bind(&mgr, s_http_port, ev_handler)) == NULL) {
+    fprintf(stderr, "mg_bind(%s) failed\n", s_http_port);
+    exit(EXIT_FAILURE);
+  }
+
+#if MG_ENABLE_SSL
+  if (s_ssl_cert != NULL) {
+    const char *err_str = mg_set_ssl(nc, s_ssl_cert, NULL);
+    if (err_str != NULL) {
+      fprintf(stderr, "Error loading SSL cert: %s\n", err_str);
+      exit(1);
+    }
+  }
+#endif
+  mg_set_protocol_http_websocket(nc);
+
+  if (s_num_vhost_backends + s_num_default_backends == 0) {
+    print_usage_and_exit(argv[0]);
+  }
+
+  signal(SIGINT, signal_handler);
+  signal(SIGTERM, signal_handler);
+
+  /* Run event loop until signal is received */
+  printf("Starting LB on port %s\n", s_http_port);
+  while (s_sig_num == 0) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+
+  /* Cleanup */
+  mg_mgr_free(&mgr);
+
+  printf("Exiting on signal %d\n", s_sig_num);
+
+  return EXIT_SUCCESS;
+}

examples/load_balancer/unit_test.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+
+PROG=$1
+PORT=8002
+
+cleanup() {
+  kill -9 $PID >/dev/null 2>&1
+}
+
+#set -x
+trap cleanup EXIT
+
+cleanup
+$PROG -p $PORT -b /api/ 127.0.0.1:8000 &
+PID=$!
+
+# Perform api_server unit test through the load balancer by passing
+# load balancer port to the unit test script
+(cd ../api_server && make && sh unit_test.sh ./api_server $PORT)
+
+exit $?