Mongoose rebrand changes

PUBLISHED_FROM=50497043e8d0c10487804263cdcb1cbb260d5a26

LICENSE

@@ -1,16 +1,16 @@
 Copyright (c) 2004-2013 Sergey Lyubka <valenok@gmail.com>
-Copyright (c) 2013 Cesanta Software Limited
+Copyright (c) 2013-2015 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
-license, as set out in <http://cesanta.com/>.
+Alternatively, you can license this software under a commercial
+license, as set out in <https://www.cesanta.com/license>.

README.md

@@ -1,63 +1,101 @@
-# 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
+
+[![Join the chat at https://gitter.im/cesanta/mongoose](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/cesanta/mongoose?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+![](https://img.shields.io/badge/license-GPL_2-green.svg "License")
+
+
+Mongoose is ideal for embedded environments, it has been designed as an open
+source platform for connecting devices and bringing them online.
+[Mongoose](https://www.cesanta.com/products)
+has been on the market since 2004 and attracted
+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/H0150FK0)
+
+> Nothing overdone. Nothing less. So unbelievably easy to use.
+> Just how good software should be!
+> - Pritin Tyagaraj, SAP
 
-Mongoose is easy to use, powerful, embeddable web server.
-   * [Mailing list](http://groups.google.com/group/mongoose-users)
-   * [Downloads & Documentation](http://cesanta.com/mongoose.shtml)
-    * [How to use Lua Server Pages](http://cesanta.com/docs/Lua.shtml)
-    * [How to create basic website with Mongoose](http://cesanta.com/docs/BasicWebsite.shtml)
-    * [How to create PHP website with Mongoose](http://cesanta.com/docs/PhpWebsite.shtml)
-    * [Embedding Guide](http://cesanta.com/docs/Embed.shtml)
 
 # Features
 
-- Works on Windows, Mac, UNIX/Linux, iPhone, Android, and many other platforms
-- CGI, SSI, SSL, Digest auth, Websocket, WEbDAV, Resumed download, URL rewrite, file blacklist, Custom error pages, Virtual hosts, IP-based ACL, Windows service
-- Scripting and database support ([Lua](http://lua.org) +
-[Sqlite](http://sqlite.org), see
-[dirscan.lp](https://github.com/cesanta/mongoose/blob/master/examples/lua/dirscan.lp) ),
-  which provides ready to go, powerful web development platform in
-  one single-click executable with no dependencies
-- Simple and clean
-  [embedding API](https://github.com/cesanta/mongoose/blob/master/mongoose.h).
-  The source is in single
-  [mongoose.c](https://github.com/cesanta/mongoose/blob/master/mongoose.c) file
-  to make embedding easy
-- Extremely lightweight, has a core of under 40kB and tiny runtime footprint
-- Asyncronouns, non-blocking core supporting single- or multi-threaded usage
-- On the market since 2004, stable, mature and tested,
-  has several man-years invested in continuous improvement and refinement
-- Professional support and consultancy available from
-[Cesanta Software](http://cesanta.com), developer of Mongoose
+* Cross-platform: works on Linux/UNIX, QNX, eCos, Windows, Android, iPhone, etc
+* Single-threaded, asynchronous, non-blocking core with simple event-based API
+* Builtin protocols:
+   - plain TCP, plain UDP, SSL/TLS (over TCP, one-way or two-way)
+   - HTTP client, HTTP server
+   - Websocket client, Websocket server
+   - JSON-RPC client, JSON-RPC server
+   - MQTT client, MQTT broker
+   - CoAP client, CoAP server
+   - DNS client, DNS server, async DNS resolver
+* Tiny static and run-time footprint
+* Source code is both ISO C and ISO C++ compliant
+* Very easy to integrate: just copy
+  [mongoose.c](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.c) and
+  [mongoose.h](https://raw.githubusercontent.com/cesanta/mongoose/master/mongoose.h)
+  files to your build tree
+* Extensively tested and production-ready, trusted by many blue chip businesses
 
-# Acknowledgements
+# Examples & Documentation
 
-Mongoose made better thanks to the contribution of following people:
+- [User Guide](https://docs.cesanta.com/mongoose) - Detailed User Guide and API reference
+- [examples](examples) - Collection of well-commented examples. To build any example,
+go into respective directory and type `make`
+
+# 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)
 
-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
-[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).
+You are using Mongoose under
+[GPLv2](http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html)
+and until you commercialize your
+application, can continue to use Mongoose free of charge.
 
-[Frozen JSON parser](https://github.com/cesanta/frozen),
-[Super Light Regular Expression library](https://github.com/cesanta/slre),
-[Super Light DNS Resolver](https://github.com/cesanta/sldr)
-are other projects by Cesanta Software, developed with the same philosophy
-of functionality and simplicity.
+Once you commercialize your product, in order to comply with GPLv2
+you need to either open the source code of your product fully or
+alternatively purchase a commercial license.
+We offer [three levels of commercial licensing](https://www.cesanta.com/products):
+
+- Mongoose Lite: cross platform integration, SSL/TLS, HTTP support
+- Mongoose: Mongoose Lite + HTTP CGI, HTTP SSI, HTTP Digest Auth,
+  WebSocket support
+- Mongoose Premium: Mongoose + Plain TCP, UDP, JSON-RPC, MQTT, DNS,
+  CoAP support
+
+
+[Enquire about commercial licensing here](https://www.cesanta.com/contact)
+
+# Mongoose Binary
+
+This is our easy to use web server for web developers (PHP, Ruby, Python, etc)
+and web designers. Available in three editions to suit your needs: free, pro
+(USD 5) and dev edition (from USD 8). To install, simply download, double-click
+to start and run browser - that's all!
+
+[Download Mongoose Binary here](https://www.cesanta.com/mongoose)
+
+# Other products by Cesanta
+
+- [Smart.js](https://github.com/cesanta/smart.js) -
+    Generic, hardware independent, full-stack IoT software platform
+- [V7](https://github.com/cesanta/v7) - Embedded JavaScript engine
+- [Frozen](https://github.com/cesanta/frozen) - JSON parser and generator
+- [SLRE](https://github.com/cesanta/slre) - Super Light Regular Expression
+  library

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/Makefile

@@ -1,62 +1,15 @@
-CFLAGS = -W -Wall -I.. -pthread -g -pipe $(CFLAGS_EXTRA)
-RM = rm -rf
-OUT = -o $@
+# Copyright (c) 2014 Cesanta Software
+# All rights reserved
 
-ifeq ($(OS),Windows_NT)
-  MSVC = ../../vc6
-  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)
+SUBDIRS = $(sort $(dir $(wildcard */)))
+X = $(SUBDIRS)
 
-  ifeq ($(UNAME_S),Linux)
-    CFLAGS += -ldl
-  endif
+.PHONY: $(SUBDIRS)
 
-  ifeq ($(UNAME_S),Darwin)
-  endif
-endif
+all: $(SUBDIRS)
 
-all: hello websocket server post multi_threaded upload auth
-
-# 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 $(CFLAGS_EXTRA) && ./a.out
+$(SUBDIRS):
+	@$(MAKE) -C $@
 
 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_STR("GET");
+static const struct mg_str s_put_method = MG_STR("PUT");
+static const struct mg_str s_delele_method = MG_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_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 dmg_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(dmg_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 dmg_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(dmg_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/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 +1,82 @@
+/*
+ * 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_dmg_message *msg;
+  struct mg_dmg_resource_record *rr;
+  struct mg_dmg_reply reply;
+  int i;
+
+  switch (ev) {
+    case MG_DNS_MESSAGE:
+      msg = (struct mg_dmg_message *) ev_data;
+      reply = mg_dmg_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_dmg_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_dmg_send_reply(nc, &reply);
+      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">
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-    </div>
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-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 +1,72 @@
+/*
+ * 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, 1);
+  }
+
+  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 +1,73 @@
+/*
+ * 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, 1);
+  }
+
+  printf("Exiting on signal %d\n", s_sig_received);
+
+  mg_mgr_free(&mgr);
+  return 0;
+}

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/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 +1,637 @@
+/*
+ * 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;
+
+    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->host_port);
+
+  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 {
+      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 $?

examples/lua/dirscan.lp

@@ -1,15 +0,0 @@
-HTTP/1.0 200 OK
-Content-Type: text/plain
-
-<?
-  -- Directory scanning example
-
-  function scandir(dir)
-    local t = {}
-    for f in io.popen('dir ' .. dir):lines() do table.insert(t, f) end
-    return t
-  end
-
-  local tab = scandir('C:\\')
-  for k,v in pairs(tab) do mg.write(v, '\n') end
-?>

examples/lua/prime_numbers.lp

@@ -1,42 +0,0 @@
-HTTP/1.0 200 OK
-Content-Type: text/html
-
-<html>
-  <p>Prime numbers from 0 to 100, calculated by Lua:</p>
- <?
-    function is_prime(n)
-      if n <= 0 then return false end
-      if n <= 2 then return true end
-      if (n % 2 == 0) then return false end
-      for i = 3, n / 2, 2 do
-        if (n % i == 0) then return false end
-      end
-      return true
-    end
-
-    for i = 1, 100 do
-      if is_prime(i) then mg.write('<span>' .. i .. '</span>&nbsp;') end
-    end
-
- ?>
-
- <p>Reading POST data from Lua (click submit):</p>
- <form method="POST" ><input type="text" name="t1"/><input type="submit"></form>
-
-<pre>
-POST data: [<?  mg.write(mg.request_info.content) ?>]
-request method: [<? mg.write(mg.request_info.request_method) ?>]
-IP/port: [<?mg.write(mg.request_info.remote_ip, ':',
-                    mg.request_info.remote_port) ?>]
-URI: [<? mg.write(mg.request_info.uri) ?>]
-HTTP version [<? mg.write(mg.request_info.http_version) ?>]
-Content Len: [<? mg.write(mg.request_info.content_len) ?>]
-HEADERS:
-<?
- for name, value in pairs(mg.request_info.http_headers) do
-   mg.write(name, ':', value, '\n')
- end
-?>
-
-</pre>
-</html>

examples/lua_dll.c

@@ -1,17 +0,0 @@
-#include <stdio.h>
-#include "lua_5.2.1.h"
-
-static int smile(lua_State *L) {
-  (void) L;  // Unused
-  printf("%s\n", ":-)");
-  return 0;
-}
-
-int LUA_API luaopen_lua_dll(lua_State *L) {
-  static const struct luaL_Reg api[] = {
-    {"smile", smile},
-    {NULL, NULL},
-  };
-  luaL_openlib(L, "lua_dll", api, 0);
-  return 1;
-}

examples/mjpg.c

@@ -1,94 +0,0 @@
-#include <sys/stat.h>
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <time.h>
-#include "mongoose.h"
-
-static void send_file(struct mg_connection *conn, const char *path) {
-  char buf[1024];
-  struct stat st;
-  int n;
-  FILE *fp;
-
-  if (stat(path, &st) == 0 && (fp = fopen(path, "rb")) != NULL) {
-    mg_printf(conn, "--myboundary\r\nContent-Type: image/jpeg\r\n"
-              "Content-Length: %zu\r\n\r\n", st.st_size);
-    while ((n = fread(buf, 1, sizeof(buf), fp)) > 0) {
-      mg_write(conn, buf, n);
-    }
-    fclose(fp);
-    mg_write(conn, "\r\n", 2);
-  }
-}
-
-struct conn_state {
-  int file_index;
-  time_t last_poll;
-};
-
-static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
-  const char **file_names = (const char **) conn->server_param;
-  struct conn_state *state;
-  int result = MG_FALSE;
-
-  if (ev == MG_REQUEST) {
-    mg_printf(conn, "%s",
-              "HTTP/1.0 200 OK\r\n" "Cache-Control: no-cache\r\n"
-              "Pragma: no-cache\r\nExpires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
-              "Connection: close\r\nContent-Type: multipart/x-mixed-replace; "
-              "boundary=--myboundary\r\n\r\n");
-
-    send_file(conn, file_names[0]);
-
-    state = (struct conn_state *) malloc(sizeof(*state));
-    conn->connection_param = state;
-    state->file_index = 1;  // First file is already sent
-    state->last_poll = time(NULL);
-    result = MG_MORE;
-
-  } else if (ev == MG_POLL) {
-
-    time_t now = time(NULL);
-    state = (struct conn_state *) conn->connection_param;
-
-    if (state != NULL && now > state->last_poll) {
-      if (file_names[state->file_index] != NULL) {
-        send_file(conn, file_names[state->file_index]);
-        state->file_index++;
-        if (file_names[state->file_index] == NULL) {
-          result = MG_TRUE;  // No more images, close connection
-        }
-      }
-      state->last_poll = now;
-    }
-
-  } else if (ev == MG_CLOSE) {
-    free(conn->connection_param);
-    conn->connection_param = NULL;
-  } else if (ev == MG_AUTH) {
-    result = MG_TRUE;
-  }
-
-  return result;
-}
-
-int main(int argc, char *argv[]) {
-  struct mg_server *server;
-
-  if (argc < 3) {
-    printf("Usage: %s image1.jpg image2.jpg ...\n", argv[0]);
-    return 1;
-  }
-
-  server = mg_create_server(&argv[1], ev_handler);
-  mg_set_option(server, "listening_port", "8080");
-
-  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
-  for (;;) {
-    mg_poll_server(server, 1000);
-  }
-  mg_destroy_server(&server);
-
-  return 0;
-}

examples/mkdata.pl

@@ -1,53 +0,0 @@
-# This program is used to embed arbitrary data into a C binary. It takes
-# a list of files as an input, and produces a .c data file that contains
-# contents of all these files as collection of char arrays.
-#
-# Usage: perl <this_file> <file1> [file2, ...] > embedded_data.c
-
-foreach my $i (0 .. $#ARGV) {
-  open FD, '<:raw', $ARGV[$i] or die "Cannot open $ARGV[$i]: $!\n";
-  printf("static const unsigned char v%d[] = {", $i);
-  my $byte;
-  my $j = 0;
-  while (read(FD, $byte, 1)) {
-    if (($j % 12) == 0) {
-      print "\n";
-    }
-    printf ' %#04x,', ord($byte);
-    $j++;
-  }
-  print " 0x00\n};\n";
-  close FD;
-}
-
-print <<EOS;
-
-#include <stddef.h>
-#include <string.h>
-
-static const struct embedded_file {
-  const char *name;
-  const unsigned char *data;
-  size_t size;
-} embedded_files[] = {
-EOS
-
-foreach my $i (0 .. $#ARGV) {
-  print "  {\"$ARGV[$i]\", v$i, sizeof(v$i) - 1},\n";
-}
-
-print <<EOS;
-  {NULL, NULL, 0}
-};
-
-const char *find_embedded_file(const char *name, size_t *size) {
-  const struct embedded_file *p;
-  for (p = embedded_files; p->name != NULL; p++) {
-    if (!strcmp(p->name, name)) {
-      if (size != NULL) { *size = p->size; }
-      return (const char *) p->data;
-    }
-  }
-  return NULL;
-}
-EOS

examples/mqtt_broker/Makefile

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

examples/mqtt_broker/mqtt_broker.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ * 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/>.
+ *
+ * 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 software under a commercial
+ * license, as set out in <https://www.cesanta.com/license>.
+ */
+
+#include "../../mongoose.h"
+
+int main(void) {
+  struct mg_mgr mgr;
+  const char *address = "0.0.0.0:1883";
+  struct mg_connection *nc;
+  struct mg_mqtt_broker brk;
+
+  mg_mgr_init(&mgr, NULL);
+  mg_mqtt_broker_init(&brk, NULL);
+
+  if ((nc = mg_bind(&mgr, address, mg_mqtt_broker)) == NULL) {
+    fprintf(stderr, "mg_bind(%s) failed\n", address);
+    exit(EXIT_FAILURE);
+  }
+  nc->user_data = &brk;
+
+  /*
+   * TODO: Add a HTTP status page that shows current sessions
+   * and subscriptions
+   */
+
+  for(;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+}

examples/mqtt_client/Makefile

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

examples/mqtt_client/mqtt_client.c

@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ * 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/>.
+ *
+ * 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 software under a commercial
+ * license, as set out in <https://www.cesanta.com/license>.
+ */
+
+#include "mongoose.h"
+
+struct mg_mqtt_topic_expression topic_expressions[] = {
+  {"/stuff", 0}
+};
+
+static void ev_handler(struct mg_connection *nc, int ev, void *p) {
+  struct mg_mqtt_message *msg = (struct mg_mqtt_message *)p;
+  (void) nc;
+
+#if 0
+  if (ev != MG_EV_POLL)
+    printf("USER HANDLER GOT %d\n", ev);
+#endif
+
+  switch (ev) {
+    case MG_EV_CONNECT:
+      mg_set_protocol_mqtt(nc);
+      mg_send_mqtt_handshake(nc, "dummy");
+      break;
+    case MG_EV_MQTT_CONNACK:
+      if (msg->connack_ret_code != MG_EV_MQTT_CONNACK_ACCEPTED) {
+        printf("Got mqtt connection error: %d\n", msg->connack_ret_code);
+        exit(1);
+      }
+      printf("Subscribing to '/stuff'\n");
+      mg_mqtt_subscribe(nc, topic_expressions, sizeof(topic_expressions)/sizeof(*topic_expressions), 42);
+      break;
+    case MG_EV_MQTT_PUBACK:
+      printf("Message publishing acknowledged (msg_id: %d)\n", msg->message_id);
+      break;
+    case MG_EV_MQTT_SUBACK:
+      printf("Subscription acknowledged, forwarding to '/test'\n");
+      break;
+    case MG_EV_MQTT_PUBLISH:
+      {
+#if 0
+        char hex[1024] = {0};
+        mg_hexdump(nc->recv_mbuf.buf, msg->payload.len, hex, sizeof(hex));
+        printf("Got incoming message %s:\n%s", msg->topic, hex);
+#else
+        printf("Got incoming message %s: %.*s\n", msg->topic, (int)msg->payload.len, msg->payload.p);
+#endif
+
+        printf("Forwarding to /test\n");
+        mg_mqtt_publish(nc, "/test", 65, MG_MQTT_QOS(0), msg->payload.p, msg->payload.len);
+      }
+      break;
+    case MG_EV_CLOSE:
+      printf("Connection closed\n");
+      exit(1);
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  const char *address = "localhost:1883";
+
+  mg_mgr_init(&mgr, NULL);
+
+  if (mg_connect(&mgr, address, ev_handler) == NULL) {
+    fprintf(stderr, "mg_connect(%s) failed\n", address);
+    exit(EXIT_FAILURE);
+  }
+
+  for(;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+}

examples/multi_threaded.c

@@ -1,40 +0,0 @@
-#include "mongoose.h"
-
-// Start a browser and hit refresh couple of times. The replies will
-// come from both server instances.
-static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
-  if (ev == MG_REQUEST) {
-    mg_send_header(conn, "Content-Type", "text/plain");
-    mg_printf_data(conn, "This is a reply from server instance # %s",
-                   (char *) conn->server_param);
-    return MG_TRUE;
-  } else if (ev == MG_AUTH) {
-    return MG_TRUE;
-  } else {
-    return MG_FALSE;
-  }
-}
-
-static void *serve(void *server) {
-  for (;;) mg_poll_server((struct mg_server *) server, 1000);
-  return NULL;
-}
-
-int main(void) {
-  struct mg_server *server1, *server2;
-
-  server1 = mg_create_server((void *) "1", ev_handler);
-  server2 = mg_create_server((void *) "2", ev_handler);
-
-  // Make both server1 and server2 listen on the same socket
-  mg_set_option(server1, "listening_port", "8080");
-  mg_set_listening_socket(server2, mg_get_listening_socket(server1));
-
-  // server1 goes to separate thread, server 2 runs in main thread.
-  // IMPORTANT: NEVER LET DIFFERENT THREADS HANDLE THE SAME SERVER.
-  mg_start_thread(serve, server1);
-  mg_start_thread(serve, server2);
-  getchar();
-
-  return 0;
-}

examples/multithreaded_restful_server/Makefile

@@ -0,0 +1,18 @@
+PROG = multithreaded_restful_server
+SOURCES = $(PROG).c ../../mongoose.c
+APP_FLAGS = -DMG_ENABLE_THREADS $(CFLAGS_EXTRA)
+
+ifeq ($(OS), Windows_NT)
+APP_FLAGS += advapi32.lib
+endif
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ -W -Wall -I../.. -pthread $(APP_FLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /Fe$@ $(APP_FLAGS)
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/multithreaded_restful_server/multithreaded_restful_server.c

@@ -0,0 +1,52 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+// This example shows how to handle long, blocking requests by
+// handing off computation to different threads. Here, each
+// request spawns a new thread. In a production scenario, a thread
+// pools can be used for efficiency, if required.
+// Long computation is simulated by sleeping for a random interval.
+
+#include "mongoose.h"
+
+static const char *s_http_port = "8000";
+
+static void ev_handler(struct mg_connection *c, int ev, void *p) {
+  if (ev == MG_EV_HTTP_REQUEST) {
+    struct http_message *hm = (struct http_message *) p;
+    char reply[100];
+
+    /* Simulate long calculation */
+    sleep(3);
+
+    /* Send the reply */
+    snprintf(reply, sizeof(reply), "{ \"uri\": \"%.*s\" }\n",
+             (int) hm->uri.len, hm->uri.p);
+    mg_printf(c, "HTTP/1.1 200 OK\r\n"
+              "Content-Type: application/json\r\n"
+              "Content-Length: %d\r\n"
+              "\r\n"
+              "%s",
+              (int) strlen(reply), reply);
+  }
+}
+
+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);
+
+  /* For each new connection, execute ev_handler in a separate thread */
+  mg_enable_multithreading(nc);
+
+  printf("Starting multi-threaded server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 3000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/netcat/Makefile

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

examples/netcat/nc.c

@@ -0,0 +1,140 @@
+// Copyright (c) 2014 Cesanta Software Limited
+// All rights reserved
+//
+// 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/>.
+//
+// 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 software under a commercial
+// license, as set out in <https://www.cesanta.com/license>.
+//
+// $Date: 2014-09-28 05:04:41 UTC $
+
+// This file implements "netcat" utility with SSL and traffic hexdump.
+
+#include "mongoose.h"
+
+static sig_atomic_t s_received_signal = 0;
+
+static void signal_handler(int sig_num) {
+  signal(sig_num, signal_handler);
+  s_received_signal = sig_num;
+}
+
+static void show_usage_and_exit(const char *prog_name) {
+  fprintf(stderr, "%s\n", "Copyright (c) 2014 CESANTA SOFTWARE");
+  fprintf(stderr, "%s\n", "Usage:");
+  fprintf(stderr, "  %s\n [-d debug_file] [-l] [tcp|ssl]://[ip:]port[:cert][:ca_cert]",
+          prog_name);
+  fprintf(stderr, "%s\n", "Examples:");
+  fprintf(stderr, "  %s\n -d hexdump.txt ssl://google.com:443", prog_name);
+  fprintf(stderr, "  %s\n -l ssl://443:ssl_cert.pem", prog_name);
+  fprintf(stderr, "  %s\n -l tcp://8080", prog_name);
+  exit(EXIT_FAILURE);
+}
+
+static void on_stdin_read(struct mg_connection *nc, int ev, void *p) {
+  int ch = * (int *) p;
+
+  (void) ev;
+
+  if (ch < 0) {
+    // EOF is received from stdin. Schedule the connection to close
+    nc->flags |= MG_F_SEND_AND_CLOSE;
+    if (nc->send_mbuf.len <= 0) {
+      nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+    }
+  } else {
+    // A character is received from stdin. Send it to the connection.
+    unsigned char c = (unsigned char) ch;
+    mg_send(nc, &c, 1);
+  }
+}
+
+static void *stdio_thread_func(void *param) {
+  struct mg_mgr *mgr = (struct mg_mgr *) param;
+  int ch;
+
+  // Read stdin until EOF character by character, sending them to the mgr
+  while ((ch = getchar()) != EOF) {
+    mg_broadcast(mgr, on_stdin_read, &ch, sizeof(ch));
+  }
+  s_received_signal = 1;
+
+  return NULL;
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *p) {
+  (void) p;
+
+  switch (ev) {
+    case MG_EV_ACCEPT:
+    case MG_EV_CONNECT:
+      mg_start_thread(stdio_thread_func, nc->mgr);
+      break;
+
+    case MG_EV_CLOSE:
+      s_received_signal = 1;
+      break;
+
+    case MG_EV_RECV:
+      fwrite(nc->recv_mbuf.buf, 1, nc->recv_mbuf.len, stdout);
+      mbuf_remove(&nc->recv_mbuf, nc->recv_mbuf.len);
+      break;
+
+    default:
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  int i, is_listening = 0;
+  const char *address = NULL;
+
+  mg_mgr_init(&mgr, NULL);
+
+  // Parse command line options
+  for (i = 1; i < argc && argv[i][0] == '-'; i++) {
+    if (strcmp(argv[i], "-l") == 0) {
+      is_listening = 1;
+    } else if (strcmp(argv[i], "-d") == 0 && i + 1 < argc) {
+      mgr.hexdump_file = argv[++i];
+    } else {
+      show_usage_and_exit(argv[0]);
+    }
+  }
+
+  if (i + 1 == argc) {
+    address = argv[i];
+  } else {
+    show_usage_and_exit(argv[0]);
+  }
+
+  signal(SIGTERM, signal_handler);
+  signal(SIGINT, signal_handler);
+  signal(SIGPIPE, SIG_IGN);
+
+  if (is_listening) {
+    if (mg_bind(&mgr, address, ev_handler) == NULL) {
+      fprintf(stderr, "mg_bind(%s) failed\n", address);
+      exit(EXIT_FAILURE);
+    }
+  } else if (mg_connect(&mgr, address, ev_handler) == NULL) {
+    fprintf(stderr, "mg_connect(%s) failed\n", address);
+    exit(EXIT_FAILURE);
+  }
+
+  while (s_received_signal == 0) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return EXIT_SUCCESS;
+}

examples/post.c

@@ -1,62 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include "mongoose.h"
-
-static const char *html_form =
-  "<html><body>POST example."
-  "<form method=\"POST\" action=\"/handle_post_request\">"
-  "Input 1: <input type=\"text\" name=\"input_1\" /> <br/>"
-  "Input 2: <input type=\"text\" name=\"input_2\" /> <br/>"
-  "<input type=\"submit\" />"
-  "</form></body></html>";
-
-static void send_reply(struct mg_connection *conn) {
-  char var1[500], var2[500];
-
-  if (strcmp(conn->uri, "/handle_post_request") == 0) {
-    // User has submitted a form, show submitted data and a variable value
-    // Parse form data. var1 and var2 are guaranteed to be NUL-terminated
-    mg_get_var(conn, "input_1", var1, sizeof(var1));
-    mg_get_var(conn, "input_2", var2, sizeof(var2));
-
-    // Send reply to the client, showing submitted form values.
-    // POST data is in conn->content, data length is in conn->content_len
-    mg_send_header(conn, "Content-Type", "text/plain");
-    mg_printf_data(conn,
-                   "Submitted data: [%.*s]\n"
-                   "Submitted data length: %d bytes\n"
-                   "input_1: [%s]\n"
-                   "input_2: [%s]\n",
-                   conn->content_len, conn->content,
-                   conn->content_len, var1, var2);
-  } else {
-    // Show HTML form.
-    mg_send_data(conn, html_form, strlen(html_form));
-  }
-}
-
-static int ev_handler(struct mg_connection *conn, enum mg_event ev) {
-  if (ev == MG_REQUEST) {
-    send_reply(conn);
-    return MG_TRUE;
-  } else if (ev == MG_AUTH) {
-    return MG_TRUE;
-  } else {
-    return MG_FALSE;
-  }
-}
-
-int main(void) {
-  struct mg_server *server = mg_create_server(NULL, ev_handler);
-
-  mg_set_option(server, "listening_port", "8080");
-
-  printf("Starting on port %s\n", mg_get_option(server, "listening_port"));
-  for (;;) {
-    mg_poll_server(server, 1000);
-  }
-
-  mg_destroy_server(&server);
-
-  return 0;
-}

examples/publish_subscribe/Makefile

@@ -0,0 +1,14 @@
+PROG = publish_subscribe
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. -DMG_ENABLE_THREADS -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/publish_subscribe/publish_subscribe.c

@@ -0,0 +1,112 @@
+// Copyright (c) 2014 Cesanta Software Limited
+// All rights reserved
+//
+// 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/>.
+//
+// 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 software under a commercial
+// license, as set out in <https://www.cesanta.com/license>.
+//
+// $Date: 2014-09-28 05:04:41 UTC $
+
+#include "mongoose.h"
+
+static void *stdin_thread(void *param) {
+  int ch, sock = * (int *) param;
+  while ((ch = getchar()) != EOF) {
+    unsigned char c = (unsigned char) ch;
+    send(sock, &c, 1, 0);  // Forward all types characters to the socketpair
+  }
+  return NULL;
+}
+
+static void server_handler(struct mg_connection *nc, int ev, void *p) {
+  (void) p;
+  if (ev == MG_EV_RECV) {
+    // Push received message to all ncections
+    struct mbuf *io = &nc->recv_mbuf;
+    struct mg_connection *c;
+
+    for (c = mg_next(nc->mgr, NULL); c != NULL; c = mg_next(nc->mgr, c)) {
+      mg_send(c, io->buf, io->len);
+    }
+    mbuf_remove(io, io->len);
+  }
+}
+
+static void client_handler(struct mg_connection *conn, int ev, void *p) {
+  struct mbuf *io = &conn->recv_mbuf;
+  (void) p;
+
+  if (ev == MG_EV_CONNECT) {
+    if (conn->flags & MG_F_CLOSE_IMMEDIATELY) {
+      printf("%s\n", "Error connecting to server!");
+      exit(EXIT_FAILURE);
+    }
+    printf("%s\n", "Connected to server. Type a message and press enter.");
+  } else if (ev == MG_EV_RECV) {
+    if (conn->flags & MG_F_USER_1) {
+      // Received data from the stdin, forward it to the server
+      struct mg_connection *c = (struct mg_connection *) conn->user_data;
+      mg_send(c, io->buf, io->len);
+      mbuf_remove(io, io->len);
+    } else {
+      // Received data from server connection, print it
+      fwrite(io->buf, io->len, 1, stdout);
+      mbuf_remove(io, io->len);
+    }
+  } else if (ev == MG_EV_CLOSE) {
+    // Connection has closed, most probably cause server has stopped
+    exit(EXIT_SUCCESS);
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+
+  if (argc != 3) {
+    fprintf(stderr, "Usage: %s <port> <client|server>\n", argv[0]);
+    exit(EXIT_FAILURE);
+  } else if (strcmp(argv[2], "client") == 0) {
+    int fds[2];
+    struct mg_connection *ioconn, *server_conn;
+
+    mg_mgr_init(&mgr, NULL);
+
+    // Connect to the pubsub server
+    server_conn = mg_connect(&mgr, argv[1], client_handler);
+    if (server_conn == NULL) {
+      fprintf(stderr, "Cannot connect to port %s\n", argv[1]);
+      exit(EXIT_FAILURE);
+    }
+
+    // Create a socketpair and give one end to the thread that reads stdin
+    mg_socketpair(fds, SOCK_STREAM);
+    mg_start_thread(stdin_thread, &fds[1]);
+
+    // The other end of a pair goes inside the server
+    ioconn = mg_add_sock(&mgr, fds[0], client_handler);
+    ioconn->flags |= MG_F_USER_1;    // Mark this so we know this is a stdin
+    ioconn->user_data = server_conn;
+
+  } else {
+    // Server code path
+    mg_mgr_init(&mgr, NULL);
+    mg_bind(&mgr, argv[1], server_handler);
+    printf("Starting pubsub server on port %s\n", argv[1]);
+  }
+
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return EXIT_SUCCESS;
+}

examples/raspberry_pi_mjpeg_led/Makefile

@@ -0,0 +1,18 @@
+NS=../../mongoose.c
+FLAGS = ../../mongoose.c -I../..
+CFLAGS=-W -Wall -DMG_ENABLE_THREADS -pthread $(CFLAGS_EXTRA)
+PROGS = device_side cloud_side
+
+all: $(PROGS)
+
+device_side: Makefile device_side.c $(NS)
+	$(CC) device_side.c $(FLAGS) -o $@ $(CFLAGS)
+
+cloud_side: Makefile cloud_side.c $(NS)
+	$(CC) cloud_side.c $(FLAGS) -o $@ $(CFLAGS)
+
+device_side.exe: Makefile device_side.c $(NS)
+	cl device_side.c $(FLAGS) /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROGS)

examples/raspberry_pi_mjpeg_led/README.adoc

@@ -0,0 +1,72 @@
+= Raspberry Pi camera/LED demo
+
+== Overview
+
+The link:/[demo] consists of web app providing access to a webcam and a LED attached to a RaspberryPi.
+The device is assumed to have a limited bandwidth towards the server hosting the web app.
+
+== Objective
+
+The demo shows how to use websockets to communicate bidirectionally with an embedded device using standard protocols.
+
+It also shows that it's possible to use Smart.c to develop also the cloud endpoint and expose WebSocket and RESTful APIs
+easy to integreate with modern web stacks.
+
+== How it works
+
+image::docs/arch.png[]
+
+There are two components, once with runs on the device (`device_side`) and one that runs on a stronger machine
+and with more bandwidth (`cloud_side`).
+
+The device app connects to the cloud app via websocket and sends a new jpeg frame as fast as the underlying `raspistill` camera
+grabbing application can handle. The device automatically attempts reconnecting.
+
+The cloud side serves the webapp static pages and serves an MPJEG image on `/mpjg`.
+The MPJEG image handler blocks all the clients until a JPEG frame arrives via websocket
+and then every client will recieve a copy of the frame.
+
+The web app can turn on and off the LED via a RESTful api accessible via the `/api` handler.
+
+== Installation
+
+=== Server side
+
+----
+git clone https://github.com/cesanta/mongoose
+cd mongoose/examples/web_demo
+make cloud_side && ./cloud_side 0.0.0.0:8080
+----
+
+=== Raspberry Pi
+
+The instructions provided here are tailored for the Raspbian distribution.
+
+==== Dependencies
+
+jpegoptim::
+apt-get install jpegoptim
+
+camera::
+run raspi-config and enable camera
+
+==== LED
+
+In order to access the led on your link:http://www.qdh.org.uk/wordpress/?page_id=15[HotPi]
+board you need to export the gpio pins:
+
+----
+for i in 22 23 24; do
+  echo $i >/sys/class/gpio/export
+  echo out >/sys/class/gpio/gpio$i/direction
+  chgrp pi /sys/class/gpio/gpio$i/value
+done
+----
+
+==== Build and run
+
+----
+git clone https://github.com/cesanta/mongoose
+cd mongoose/examples/web_demo
+make device_side && ./device_side yourserver:8080
+----

examples/raspberry_pi_mjpeg_led/cloud_side.c

@@ -0,0 +1,143 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+/*
+ * This is the cloud endpoint of the Raspberry Pi camera/LED example
+ * of the Mongoose networking library.
+ * It is a simple web server, serving both static files, a REST API handler,
+ * and a WebSocket handler.
+ */
+#include "mongoose.h"
+
+static struct mg_serve_http_opts web_root_opts;
+
+/*
+ * Forwards the jpeg frame data to all open mjpeg connections.
+ *
+ * Incoming messages follow a very simple binary frame format:
+ * 4 bytes: timestamp (in network byte order)
+ * n bytes: jpeg payload
+ *
+ * The timestamp is used to compute a lag.
+ * It's done in a quite stupid way as it requires the device clock
+ * to be synchronized with the cloud endpoint.
+ */
+static void push_frame_to_clients(struct mg_mgr *mgr,
+                                  const struct websocket_message *wm) {
+  struct mg_connection *nc;
+  /*
+   * mjpeg connections are tagged with the MG_F_USER_2 flag so we can find them
+   * my scanning the connection list provided by the mongoose manager.
+   */
+  for (nc = mg_next(mgr, NULL); nc != NULL; nc = mg_next(mgr, nc)) {
+    if (!(nc->flags & MG_F_USER_2)) continue;  // Ignore un-marked requests
+
+    mg_printf(nc, "--w00t\r\nContent-Type: image/jpeg\r\n"
+              "Content-Length: %lu\r\n\r\n", (unsigned long) wm->size);
+    mg_send(nc, wm->data, wm->size);
+    mg_send(nc, "\r\n", 2);
+    printf("Image pushed to %p\n", nc);
+  }
+}
+
+/*
+ * Forwards API payload to the device, by scanning through
+ * all the connections to find those that are tagged as WebSocket.
+ */
+static void send_command_to_the_device(struct mg_mgr *mgr,
+                                       const struct mg_str *cmd) {
+  struct mg_connection *nc;
+  for (nc = mg_next(mgr, NULL); nc != NULL; nc = mg_next(mgr, nc)) {
+    if (!(nc->flags & MG_F_IS_WEBSOCKET)) continue;  // Ignore non-websocket requests
+
+    mg_send_websocket_frame(nc, WEBSOCKET_OP_TEXT, cmd->p, cmd->len);
+    printf("Sent API command [%.*s] to %p\n", (int) cmd->len, cmd->p, nc);
+  }
+}
+
+/*
+ * Main event handler. Receives data events and dispatches to
+ * the appropriate handler function.
+ *
+ * 1. RESTful API requests are handled by send_command_to_the_device.
+ * 2. requests to /mpeg are established and left open waiting for data to arrive
+ *    from WebSocket.
+ * 3. WebSocket frames are handled by push_frame_to_clients.
+ * 4. All other connections are passed to the mg_serve_http handler
+ *    which serves static files.
+ */
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct websocket_message *wm = (struct websocket_message *) ev_data;
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (mg_vcmp(&hm->uri, "/mjpg") == 0) {
+        nc->flags |= MG_F_USER_2;   /* Set a mark on image requests */
+        mg_printf(nc, "%s",
+                "HTTP/1.0 200 OK\r\n"
+                "Cache-Control: no-cache\r\n"
+                "Pragma: no-cache\r\n"
+                "Expires: Thu, 01 Dec 1994 16:00:00 GMT\r\n"
+                "Connection: close\r\n"
+                "Content-Type: multipart/x-mixed-replace; "
+                "boundary=--w00t\r\n\r\n");
+      } else if (mg_vcmp(&hm->uri, "/api") == 0 && hm->body.len > 0) {
+        /*
+         * RESTful API call. HTTP message body should be a JSON message.
+         * We should parse it and take appropriate action.
+         * In our case, simply forward that call to the device.
+         */
+        printf("API CALL: [%.*s] [%.*s]\n", (int) hm->method.len, hm->method.p,
+               (int) hm->body.len, hm->body.p);
+        send_command_to_the_device(nc->mgr, &hm->body);
+        mg_printf(nc, "HTTP/1.0 200 OK\nContent-Length: 0\n\n");
+      } else {
+        /* Delegate to the static web server handler for all other paths. */
+        mg_serve_http(nc, hm, web_root_opts);
+      }
+      break;
+    case MG_EV_WEBSOCKET_FRAME:
+      printf("Got websocket frame, size %lu\n", (unsigned long) wm->size);
+      push_frame_to_clients(nc->mgr, wm);
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s <listening_addr>\n", argv[0]);
+    exit(EXIT_FAILURE);
+  }
+
+  printf("Listening on: [%s]\n", argv[1]);
+  mg_mgr_init(&mgr, NULL);
+
+  /*
+   * mg_bind() creates a listening connection on a given ip:port and
+   * with an attached event handler.
+   * The event handler will only trigger TCP events until the http
+   * protocol handler is installed.
+   */
+  if ((nc = mg_bind(&mgr, argv[1], ev_handler)) == NULL) {
+    fprintf(stderr, "Error binding to %s\n", argv[1]);
+    exit(EXIT_FAILURE);
+  }
+  mg_set_protocol_http_websocket(nc);
+  web_root_opts.document_root =  "./web_root";
+
+  /*
+   * We explicitly hand over control to the Mongoose manager
+   * in this event loop and we can easily multiplex other activities.
+   */
+  for(;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+
+  return EXIT_SUCCESS;
+}

examples/raspberry_pi_mjpeg_led/device_side.c

@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+/*
+ * This is the device endpoint of the Raspberry Pi camera/LED example
+ * of the Mongoose networking library.
+ * It is a simple websocket client, sending jpeg frames obtained from the
+ * RPi camera and receiving JSON commands through the same WebSocket channel
+ */
+
+#include <unistd.h>
+#include "mongoose.h"
+
+static int s_poll_interval_ms = 100;
+static int s_still_period = 100;
+static int s_vertical_flip = 0;
+static int s_width = 320;
+static int s_height = 180;
+static const char *s_mjpg_file = "/var/run/shm/cam.jpg";
+
+static struct mg_connection *client;
+
+/*
+ * Check if there is a new image available and
+ * send it to the cloud endpoint if the send buffer is not too full.
+ * The image is moved in a new file by the jpeg optimizer function;
+ * this ensures that we will detect a new frame when raspistill writes
+ * it's output file.
+ */
+static void send_mjpg_frame(struct mg_connection *nc, const char *file_path) {
+  static int skipped_frames = 0;
+  struct stat st;
+  FILE *fp;
+
+  /* Check file modification time. */
+  if (stat(file_path, &st) == 0) {
+    /* Skip the frame if there is too much unsent data. */
+    if (nc->send_mbuf.len > 256) skipped_frames++;
+
+    /* Read new mjpg frame into a buffer */
+    fp = fopen(file_path, "rb");
+    char buf[st.st_size];
+    fread(buf, 1, sizeof(buf), fp);
+    fclose(fp);
+
+    /*
+     * Delete the file so we can detect when raspistill creates a new one.
+     * mtime granularity is only 1s.
+     */
+    unlink(file_path);
+
+    /* Send those buffer through the websocket connection */
+    mg_send_websocket_frame(nc, WEBSOCKET_OP_BINARY, buf, sizeof(buf));
+    printf("Sent mjpg frame, %lu bytes after skippping %d frames\n", (unsigned long) sizeof(buf), skipped_frames);
+    skipped_frames = 0;
+  }
+}
+
+/*
+ * Turn on or off the LED.
+ * The LED in this example is an RGB led, so all the colors have to be set.
+ */
+static void set_led(int v) {
+  char cmd[512];
+  snprintf(cmd, sizeof(cmd), "for i in 22 23 24; do"
+           " echo %d >/sys/class/gpio/gpio$i/value; done", v);
+  system(cmd);
+}
+
+/*
+ * Parse control JSON and perform command:
+ * for now only LED on/off is supported.
+ */
+static void perform_control_command(const char* data, size_t len) {
+  struct json_token toks[200], *onoff;
+  parse_json(data, len, toks, sizeof(toks));
+  onoff = find_json_token(toks, "onoff");
+  set_led(strncmp("[\"on\"]", onoff->ptr, onoff->len) == 0);
+}
+
+/* Main event handler. Sends websocket frames and receives control commands */
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct websocket_message *wm = (struct websocket_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_CONNECT:
+      printf("Reconnect: %s\n", * (int *) ev_data == 0 ? "ok" : "failed");
+      if (* (int *) ev_data == 0) {
+        /*
+         * Tune the tcp send buffer size, so that we can skip frames
+         * when the connection is congested. This helps maintaining a
+         * reasonable latency.
+         */
+        int sndbuf_size = 512;
+        if(setsockopt(nc->sock, SOL_SOCKET, SO_SNDBUF,
+                      (void *) &sndbuf_size, sizeof(int)) == -1) {
+          perror("failed to tune TCP send buffer size\n");
+        }
+
+        mg_send_websocket_handshake(nc, "/stream", NULL);
+      }
+      break;
+    case MG_EV_CLOSE:
+      printf("Connection %p closed\n", nc);
+      client = NULL;
+      break;
+    case MG_EV_POLL:
+      send_mjpg_frame(nc, s_mjpg_file);
+      break;
+    case MG_EV_WEBSOCKET_FRAME:
+      printf("Got control command: [%.*s]\n", (int) wm->size, wm->data);
+      perform_control_command((const char*)wm->data, wm->size);
+      break;
+  }
+}
+
+/*
+ * This thread regenerates s_mjpg_file every s_poll_interval_ms milliseconds.
+ * It is Raspberry PI specific, change this function on other systems.
+ */
+static void *generate_mjpg_data_thread_func(void *param) {
+  char cmd[400];
+  (void) param;
+
+  snprintf(cmd, sizeof(cmd), "raspistill -w %d -h %d -n -q 100 -tl %d "
+                "-t 999999999 -v %s -o %s >/dev/null 2>&1", s_width, s_height,
+                s_still_period, s_vertical_flip ? "-vf" : "", s_mjpg_file);
+
+  for(;;) {
+    int ret = system(cmd);
+    if (WIFSIGNALED(ret)) exit(1);
+    sleep(1);
+  }
+  return NULL;
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  char *addr = argv[1];
+
+  if (argc < 2) {
+    fprintf(stderr, "Usage: %s <server_address>\n", argv[0]);
+    exit(EXIT_FAILURE);
+  }
+
+  /* Start separate thread that generates MJPG data */
+  mg_start_thread(generate_mjpg_data_thread_func, NULL);
+
+  printf("Streaming [%s] to [%s]\n", s_mjpg_file, addr);
+
+  mg_mgr_init(&mgr, NULL);
+
+  for(;;) {
+    mg_mgr_poll(&mgr, s_poll_interval_ms);
+
+    /* Reconnect if disconnected */
+    if (!client) {
+      sleep(1); /* limit reconnections frequency */
+      printf("Reconnecting to %s...\n", addr);
+      client = mg_connect(&mgr, addr, ev_handler);
+      if (client) mg_set_protocol_http_websocket(client);
+    }
+  }
+
+  return EXIT_SUCCESS;
+}

examples/raspberry_pi_mjpeg_led/web_root/doc.html

@@ -0,0 +1,533 @@
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+<html lang="en">
+<head>
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+<title>Raspberry Pi camera/LED demo</title>
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+</head>
+<body class="article">
+<div id="header">
+<h1>Raspberry Pi camera/LED demo</h1>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_overview">Overview</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <a href="/">demo</a> consists of web app providing access to a webcam and a LED attached to a RaspberryPi.
+The device is assumed to have a limited bandwidth towards the server hosting the web app.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_objective">Objective</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The demo shows how to use websockets to communicate bidirectionally with an embedded device using standard protocols.</p>
+</div>
+<div class="paragraph">
+<p>It also shows that it&#8217;s possible to use Smart.c to develop also the cloud endpoint and expose WebSocket and RESTful APIs
+easy to integreate with modern web stacks.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_how_it_works">How it works</h2>
+<div class="sectionbody">
+<div class="imageblock">
+<div class="content">
+<img src="docs/arch.png" alt="arch">
+</div>
+</div>
+<div class="paragraph">
+<p>There are two components, once with runs on the device (<code>device_side</code>) and one that runs on a stronger machine
+and with more bandwidth (<code>cloud_side</code>).</p>
+</div>
+<div class="paragraph">
+<p>The device app connects to the cloud app via websocket and sends a new jpeg frame as fast as the underlying <code>raspistill</code> camera
+grabbing application can handle. The device automatically attempts reconnecting.</p>
+</div>
+<div class="paragraph">
+<p>The cloud side serves the webapp static pages and serves an MPJEG image on <code>/mpjg</code>.
+The MPJEG image handler blocks all the clients until a JPEG frame arrives via websocket
+and then every client will recieve a copy of the frame.</p>
+</div>
+<div class="paragraph">
+<p>The web app can turn on and off the LED via a RESTful api accessible via the <code>/api</code> handler.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_installation">Installation</h2>
+<div class="sectionbody">
+<div class="sect2">
+<h3 id="_server_side">Server side</h3>
+<div class="listingblock">
+<div class="content">
+<pre>git clone https://github.com/cesanta/mongoose
+cd mongoose/examples/web_demo
+make cloud_side &amp;&amp; ./cloud_side 0.0.0.0:8080</pre>
+</div>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_raspberry_pi">Raspberry Pi</h3>
+<div class="paragraph">
+<p>The instructions provided here are tailored for the Raspbian distribution.</p>
+</div>
+<div class="sect3">
+<h4 id="_dependencies">Dependencies</h4>
+<div class="dlist">
+<dl>
+<dt class="hdlist1">jpegoptim</dt>
+<dd>
+<p>apt-get install jpegoptim</p>
+</dd>
+<dt class="hdlist1">camera</dt>
+<dd>
+<p>run raspi-config and enable camera</p>
+</dd>
+</dl>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_led">LED</h4>
+<div class="paragraph">
+<p>In order to access the led on your <a href="http://www.qdh.org.uk/wordpress/?page_id=15">HotPi</a>
+board you need to export the gpio pins:</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre>for i in 22 23 24; do
+  echo $i &gt;/sys/class/gpio/export
+  echo out &gt;/sys/class/gpio/gpio$i/direction
+  chgrp pi /sys/class/gpio/gpio$i/value
+done</pre>
+</div>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_build_and_run">Build and run</h4>
+<div class="listingblock">
+<div class="content">
+<pre>git clone https://github.com/cesanta/mongoose
+cd mongoose/examples/web_demo
+make device_side &amp;&amp; ./device_side yourserver:8080</pre>
+</div>
+</div>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div id="footer">
+<div id="footer-text">
+Last updated 2014-11-03 21:30:06 GMT
+</div>
+</div>
+</body>
+</html>

examples/raspberry_pi_mjpeg_led/web_root/docs/arch.png

@@ -0,0 +1 @@
+../../docs/arch.png

examples/raspberry_pi_mjpeg_led/web_root/framework7.min.css

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+ * Framework7 0.9.6
+ * Full Featured HTML Framework For Building iOS 7 Apps
+ *
+ * http://www.idangero.us/framework7
+ *
+ * Copyright 2014, Vladimir Kharlampidi
+ * The iDangero.us
+ * http://www.idangero.us/
+ *
+ * Licensed under MIT
+ *
+ * Released on: September 13, 2014
+*/
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examples/raspberry_pi_mjpeg_led/web_root/framework7.min.js

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+ *
+ * Copyright 2014, Vladimir Kharlampidi
+ * The iDangero.us
+ * http://www.idangero.us/
+ *
+ * Licensed under MIT
+ *
+ * Released on: September 13, 2014
+*/
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examples/raspberry_pi_mjpeg_led/web_root/index.html

@@ -0,0 +1,108 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <!-- Required meta tags-->
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, minimal-ui">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <meta name="apple-mobile-web-app-status-bar-style" content="black">
+
+    <link rel="stylesheet" href="framework7.min.css">
+
+    <title>Smart.c mjpg example</title>
+    <style type="text/css">
+     .image img {
+       display: block;
+       margin-left: auto;
+       margin-right: auto;
+     }
+    </style>
+  </head>
+  <body>
+
+    <!-- Status bar overlay for full screen mode (PhoneGap) -->
+    <div class="statusbar-overlay"></div>
+
+    <!-- Views -->
+    <div class="views">
+      <!-- Your main view, should have "view-main" class -->
+      <div class="view view-main">
+        <!-- Top Navbar-->
+        <div class="navbar">
+          <div class="navbar-inner">
+            <!-- We need cool sliding animation on title element, so we have additional "sliding" class -->
+            <div class="left">
+              <a href="docs/docs/doc.html" class="link" onclick="location='docs/docs/doc.html'">
+                <span>About</span>
+              </a>
+            </div>
+            <div class="center sliding">Remote Camera</div>
+            <div class="right sliding">
+              <a href="https://github.com/cesanta/mongoose/tree/master/examples/raspberry_pi_mjpeg_led" class="link" onclick="location='https://github.com/cesanta/mongoose/tree/master/examples/raspberry_pi_mjpeg_led'">
+                <span>Github</span>
+                <i class="icon icon-next"></i>
+              </a>
+            </div>
+          </div>
+        </div>
+        <!-- Pages container, because we use fixed-through navbar and toolbar, it has additional appropriate classes-->
+        <div class="pages navbar-through toolbar-through">
+          <!-- Page, "data-page" contains page name -->
+          <div data-page="index" class="page">
+            <!-- Scrollable page content -->
+            <div class="page-content">
+              <div class="content-block-title">Camera View</div>
+              <div class="content-block image">
+                <img src="/mjpg">
+              </div>
+
+              <div class="content-block-title">Device Control</div>
+              <div class="list-block">
+
+                <form action="/api" method="GET" enctype="application/json"
+                      id="form-control">
+                  <ul>
+
+                    <!-- Switch (Checkbox) -->
+                    <li>
+                      <div class="item-content">
+                        <div class="item-inner">
+                          <div class="item-title label">LED on/off</div>
+                          <div class="item-input">
+                            <label class="label-switch">
+                              <input type="checkbox" name="onoff">
+                              <div class="checkbox"></div>
+                            </label>
+                          </div>
+                        </div>
+                      </div>
+                    </li>
+                  </ul>
+                </form>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <script type="text/javascript" src="framework7.min.js"></script>
+    <script type="text/javascript">
+      var myApp = new Framework7({
+        pushState: true,
+        swipePanel: 'left',
+        // ... other parameters
+      });
+      Dom7(document).on('change', '#form-control', function(ev) {
+        var data = myApp.formToJSON('#form-control');
+        var json = JSON.stringify(data);
+        Dom7.ajax({
+          url: '/api',
+          method: 'POST',
+          contentType: 'application/json',
+          data: json
+        });
+      });
+    </script>
+  </body>
+</html>

examples/restful_client/Makefile

@@ -0,0 +1,14 @@
+PROG = restful_client
+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/restful_client/restful_client.c

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "mongoose.h"
+
+/* RESTful server host and request URI */
+static const char *s_target_address = "ajax.googleapis.com:80";
+static const char *s_request = "/ajax/services/search/web?v=1.0&q=cesanta";
+
+static int s_exit_flag = 0;
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+  int connect_status;
+
+  switch (ev) {
+    case MG_EV_CONNECT:
+      connect_status = * (int *) ev_data;
+      if (connect_status == 0) {
+        printf("Connected to %s, sending request...\n", s_target_address);
+        mg_printf(nc, "GET %s HTTP/1.0\r\nHost: %s\r\n\r\n",
+                  s_request, s_target_address);
+      } else {
+        printf("Error connecting to %s: %s\n",
+               s_target_address, strerror(connect_status));
+        s_exit_flag = 1;
+      }
+      break;
+    case MG_EV_HTTP_REPLY:
+      printf("Got reply:\n%.*s\n", (int) hm->body.len, hm->body.p);
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      s_exit_flag = 1;
+      break;
+    default:
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_connect(&mgr, s_target_address, ev_handler);
+  mg_set_protocol_http_websocket(nc);
+
+  printf("Starting RESTful client against %s\n", s_target_address);
+  while (s_exit_flag == 0) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/restful_server/Makefile

@@ -0,0 +1,20 @@
+PROG = restful_server
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. $(CFLAGS_EXTRA)
+
+ifeq ($(SSL), openssl)
+	CFLAGS += -DMG_ENABLE_SSL -lssl -lcrypto -lcrypto
+else ifeq ($(SSL), krypton)
+	CFLAGS += -DMG_ENABLE_SSL ../../../krypton/krypton.c
+endif
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /DMG_ENABLE_THREADS /Fe$@ advapi32.lib
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/restful_server/index.html

@@ -0,0 +1,67 @@
+<!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="//code.jquery.com/jquery-1.11.0.min.js"></script>
+<script language="javascript" type="text/javascript">
+  jQuery(function() {
+
+    $(document).on('keyup', '#n1, #n2', function() {
+      $.ajax({
+        url: '/api/v1/sum',
+        method: 'POST',
+        dataType: 'json',
+        data: { n1: $('#n1').val(), n2: $('#n2').val() },
+        success: function(json) {
+          $('#result').html(json.result);
+        }
+      });
+    });
+
+  });
+</script>
+</head>
+<body>
+  <div class="content">
+    <h1>RESTful API demo.</h1>
+
+    <p>
+      This page demonstrates how Mongoose could be used to implement
+      RESTful APIs. Start typing numbers into the text fields below.
+      Browser sends two numbers to <tt>/api/v1/sum</tt> URI.
+      Web server calclulates the sum and returns the result.
+    </p>
+
+    <div>
+      <label>Number 1:</label> <input type="text" id="n1" />
+    </div><div>
+      <label>Number 2:</label> <input type="text" id="n2" />
+    </div><div>
+     <label>Result:</label> <span id="result">&nbsp;</span>
+    </div><div>
+
+  </div>
+</body>
+</html>

examples/restful_server/restful_server.c

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2014 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 handle_sum_call(struct mg_connection *nc, struct http_message *hm) {
+  char n1[100], n2[100];
+  double result;
+
+  /* Get form variables */
+  mg_get_http_var(&hm->body, "n1", n1, sizeof(n1));
+  mg_get_http_var(&hm->body, "n2", n2, sizeof(n2));
+
+  /* Send headers */
+  mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
+
+  /* Compute the result and send it back as a JSON object */
+  result = strtod(n1, NULL) + strtod(n2, NULL);
+  mg_printf_http_chunk(nc, "{ \"result\": %lf }", result);
+  mg_send_http_chunk(nc, "", 0);  /* Send empty chunk, the end of response */
+}
+
+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, "/api/v1/sum") == 0) {
+        handle_sum_call(nc, hm);                    /* Handle RESTful call */
+      } else if (mg_vcmp(&hm->uri, "/printcontent") == 0) {
+        char buf[100] = {0};
+        memcpy(buf, hm->body.p,
+               sizeof(buf) - 1 < hm->body.len? sizeof(buf) - 1 : hm->body.len);
+        printf("%s\n", buf);
+      } 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;
+  char *cp;
+#ifdef MG_ENABLE_SSL
+  const char *ssl_cert = NULL;
+#endif
+
+  mg_mgr_init(&mgr, NULL);
+
+  /* Process command line options to customize HTTP server */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-D") == 0 && i + 1 < argc) {
+      mgr.hexdump_file = argv[++i];
+    } else if (strcmp(argv[i], "-d") == 0 && i + 1 < argc) {
+      s_http_server_opts.document_root = argv[++i];
+    } else if (strcmp(argv[i], "-p") == 0 && i + 1 < argc) {
+      s_http_port = argv[++i];
+    } else if (strcmp(argv[i], "-a") == 0 && i + 1 < argc) {
+      s_http_server_opts.auth_domain = argv[++i];
+    } else if (strcmp(argv[i], "-P") == 0 && i + 1 < argc) {
+      s_http_server_opts.global_auth_file = argv[++i];
+    } else if (strcmp(argv[i], "-p") == 0 && i + 1 < argc) {
+      s_http_server_opts.per_directory_auth_file = argv[++i];
+    } else if (strcmp(argv[i], "-r") == 0 && i + 1 < argc) {
+      s_http_server_opts.url_rewrites = argv[++i];
+#ifndef MG_DISABLE_CGI
+    } else if (strcmp(argv[i], "-i") == 0 && i + 1 < argc) {
+      s_http_server_opts.cgi_interpreter = argv[++i];
+#endif
+#ifdef MG_ENABLE_SSL
+    } else if (strcmp(argv[i], "-s") == 0 && i + 1 < argc) {
+      ssl_cert = argv[++i];
+#endif
+    }
+  }
+
+  /* Set HTTP server options */
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Error starting server on port %s\n", s_http_port);
+    exit(1);
+  }
+
+#ifdef MG_ENABLE_SSL
+  if (ssl_cert != NULL) {
+    const char *err_str = mg_set_ssl(nc, 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);
+  s_http_server_opts.document_root = ".";
+  s_http_server_opts.enable_directory_listing = "yes";
+
+  /* Use current binary directory as document root */
+  if (argc > 0 && ((cp = strrchr(argv[0], '/')) != NULL ||
+      (cp = strrchr(argv[0], '/')) != NULL)) {
+    *cp = '\0';
+    s_http_server_opts.document_root = argv[0];
+  }
+
+  printf("Starting RESTful server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/restful_server_s3/Makefile

@@ -0,0 +1,20 @@
+PROG = restful_server_s3
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. $(CFLAGS_EXTRA)
+
+ifeq ($(SSL), openssl)
+	CFLAGS += -DMG_ENABLE_SSL -lssl -lcrypto -lcrypto
+else ifeq ($(SSL), krypton)
+	CFLAGS += -DMG_ENABLE_SSL ../../../krypton/krypton.c
+endif
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /DMG_ENABLE_THREADS /Fe$@ advapi32.lib
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/restful_server_s3/README.md

@@ -0,0 +1,31 @@
+RESTful server with Amazon S3 upload example
+============================================
+
+This example demonstrates how Mongoose could be used to implement a RESTful
+service that uses another RESTful service to handle it's own API call.
+This example takes form data and uploads it as a file to Amazon S3.
+
+## Prerequisites
+
+- Amazon S3 account security credentials: Access Key ID and Secret Access
+  Key ID. Get them from the Amazon IAM console.
+- Amazon S3 bucket.
+
+## Building and running the example
+
+    $ git clone https://github.com/cesanta/mongoose.git
+    $ cd mongoose/examples/restful_server_s3
+    $ make
+    $ ./restful_server_s3 -a ACCESS_KEY_ID -s SECRET_ACCESS_KEY_ID
+    Starting RESTful server on port 8000
+
+Then, open a browser on `http://localhost:8000`
+
+Note: If you're getting a *Temporary Redirect* error, look what is the
+Endpoint value is. It's likely that you have something like
+`BUCKET_NAME.S3_ZONE.amazonaws.com`.
+Change the *Host* field to `S3_ZONE.amazonaws.com and retry`.
+
+## Screenshot
+
+![](https://docs.cesanta.com/images/mongoose_s3_example.png)

examples/restful_server_s3/index.html

@@ -0,0 +1,97 @@
+<!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: 12em; }
+    input { border: 1px solid #ccc; padding: 0.2em; min-width: 20em; }
+    a:link, a:visited { color: #69c; text-decoration: none; }
+    #result {
+      background: #ffc; min-height: 3em; border: 1px solid #ccc;
+      white-space: pre-wrap; font-size: 85%;
+    }
+    @media (max-width: 700px) {
+      body { background-color: #fff; }
+      div.content { width: auto; margin: 0 auto; padding: 1em; }
+    }
+</style>
+
+<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
+<script language="javascript" type="text/javascript">
+  jQuery(function() {
+
+    $(document).on('click', '#upload', function() {
+      var data = {};
+      $('#upload_form [name]').each(function(index, el) {
+        data[$(el).attr('name')] = $(el).val();
+      });
+      $('#result').text('');
+      $.ajax({
+        url: '/upload',
+        method: 'POST',
+        dataType: 'html',
+        data: data,
+        success: function(data) {
+          $('#result').text(data);
+        }
+      });
+    });
+
+  });
+</script>
+</head>
+<body>
+  <div class="content">
+    <h1>RESTful server with Amazon S3 integration demo.</h1>
+
+    <p>
+      This page demonstrates how Mongoose could be used to implement
+      a RESTful service that uses another RESTful service to handle
+      it's own API call. This example takes form data and uploads it as a file
+      to Amazon S3.
+      Open S3 console and create a bucket for testing. Fill out correct
+      bucket name in the fields below.
+    </p>
+
+    <p>If you're getting a "Temporary Redirect" error, look what is the
+      <b>Endpoint</b> value is. It's likely that you have something like
+      <b>BUCKET_NAME.S3_ZONE.amazonaws.com</b>. Change
+      the <b>Host</b> field to <b>S3_ZONE.amazonaws.com</b> and retry.
+    </p>
+
+    <div id="upload_form">
+    <div>
+      <label>Bucket name:</label> <input type="text" name="bucket"
+        value="my_uploads"/>
+    </div><div>
+      <label>File name:</label> <input type="text" name="file_name"
+        value="myfile.txt"/>
+    </div><div>
+      <label>File content:</label> <input type="text" name="file_data"
+        value=":-)"/>
+    </div><div>
+      <label>Host:</label> <input type="text" name="host"
+        value="s3.amazonaws.com"/>
+    </div><div>
+      <label></label>
+      <button id="upload">Upload</button>
+    </div><div>
+      <label>Result:</label> <pre id="result">&nbsp;</pre>
+    </div>
+    </div>
+
+  </div>
+</body>
+</html>

examples/restful_server_s3/restful_server_s3.c

@@ -0,0 +1,183 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "mongoose.h"
+
+static const char *s_http_port = "8000";
+static const char *s_access_key_id = NULL;
+static const char *s_secret_access_key = NULL;
+static struct mg_serve_http_opts s_http_server_opts;
+
+static void send_error_result(struct mg_connection *nc, const char *msg) {
+  mg_printf_http_chunk(nc, "Error: %s", msg);
+  mg_send_http_chunk(nc, "", 0); /* Send empty chunk, the end of response */
+}
+
+static void link_conns(struct mg_connection *nc1, struct mg_connection *nc2) {
+  nc1->user_data = nc2;
+  nc2->user_data = nc1;
+}
+
+static void unlink_conns(struct mg_connection *nc1) {
+  struct mg_connection *nc2 = (struct mg_connection *) nc1->user_data;
+  if (nc1->user_data != NULL) {
+    nc1->user_data = NULL;
+    nc2->user_data = NULL;
+  }
+}
+
+/* S3 client handler */
+static void s3_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+  struct mg_connection *nc2 = (struct mg_connection *) nc->user_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REPLY:
+      if (nc2 != NULL) {
+        mg_printf_http_chunk(nc2, "Error: %.*s", (int) hm->message.len,
+                             hm->message.p);
+        mg_send_http_chunk(nc2, "", 0);
+      }
+      unlink_conns(nc);
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      break;
+    case MG_EV_CLOSE:
+      unlink_conns(nc);
+      break;
+    default:
+      break;
+  }
+}
+
+static void send_s3_request(struct mg_connection *nc, const char *file_name,
+                            const char *file_data, const char *host,
+                            const char *bucket) {
+  char host_port[100];
+  struct mg_connection *s3_conn;
+
+  snprintf(host_port, sizeof(host_port), "%s:80", host);
+  s3_conn = mg_connect(nc->mgr, host_port, s3_handler);
+
+  if (s3_conn == NULL) {
+    send_error_result(nc, "s3 connection failed");
+  } else {
+    const char *content_type = "text/plain", *method = "PUT";
+    char date[100], to_sign[500], signature[100], sha1[20], req[1000];
+    time_t now = time(NULL);
+
+    link_conns(nc, s3_conn);
+    strftime(date, sizeof(date), "%a, %d %b %Y %H:%M:%S GMT", gmtime(&now));
+    mg_set_protocol_http_websocket(s3_conn);
+
+    /* Prepare S3 authorization header */
+    snprintf(to_sign, sizeof(to_sign), "%s\n\n%s\n%s\n/%s/%s", method,
+             content_type, date, bucket, file_name);
+    cs_hmac_sha1((unsigned char *) s_secret_access_key,
+                 strlen(s_secret_access_key), (unsigned char *) to_sign,
+                 strlen(to_sign), (unsigned char *) sha1);
+    mg_base64_encode((unsigned char *) sha1, sizeof(sha1), signature);
+    snprintf(req, sizeof(req),
+             "%s /%s HTTP/1.1\r\n"
+             "Host: %s.%s\r\n"
+             "Date: %s\r\n"
+             "Content-Type: %s\r\n"
+             "Content-Length: %lu\r\n"
+             "Authorization: AWS %s:%s\r\n"
+             "\r\n",
+             method, file_name, bucket, host, date, content_type,
+             (unsigned long) strlen(file_data), s_access_key_id, signature);
+    mg_printf(s3_conn, "%s%s", req, file_data);
+    /* S3 request sent, wait for a reply */
+  }
+}
+
+static void handle_api_call(struct mg_connection *nc, struct http_message *hm) {
+  char file_name[100], file_data[100], host[100], bucket[100];
+
+  /* Get form variables */
+  mg_get_http_var(&hm->body, "file_name", file_name, sizeof(file_name));
+  mg_get_http_var(&hm->body, "file_data", file_data, sizeof(file_data));
+  mg_get_http_var(&hm->body, "host", host, sizeof(host));
+  mg_get_http_var(&hm->body, "bucket", bucket, sizeof(bucket));
+
+  /* Send headers */
+  mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
+
+  /* Send body */
+  if (file_name[0] == '\0' || file_data[0] == '\0' || bucket[0] == '\0') {
+    send_error_result(nc, "bad input");
+  } else {
+    send_s3_request(nc, file_name, file_data, host, bucket);
+  }
+}
+
+/* Server handler */
+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, "/upload") == 0) {
+        handle_api_call(nc, hm); /* Handle RESTful call */
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts); /* Serve static content */
+      }
+      break;
+    case MG_EV_CLOSE:
+      unlink_conns(nc);
+      break;
+    default:
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  int i;
+  char *cp;
+
+  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 = ".";
+  s_http_server_opts.enable_directory_listing = "yes";
+
+  /* Use current binary directory as document root */
+  if (argc > 0 && ((cp = strrchr(argv[0], '/')) != NULL ||
+                   (cp = strrchr(argv[0], '/')) != NULL)) {
+    *cp = '\0';
+    s_http_server_opts.document_root = argv[0];
+  }
+
+  /* Process command line options to customize HTTP server */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-D") == 0 && i + 1 < argc) {
+      mgr.hexdump_file = argv[++i];
+    } else if (strcmp(argv[i], "-p") == 0 && i + 1 < argc) {
+      s_http_port = argv[++i];
+    } else if (strcmp(argv[i], "-a") == 0 && i + 1 < argc) {
+      s_access_key_id = argv[++i];
+    } else if (strcmp(argv[i], "-s") == 0 && i + 1 < argc) {
+      s_secret_access_key = argv[++i];
+    }
+  }
+
+  if (s_access_key_id == NULL || s_secret_access_key == NULL) {
+    fprintf(stderr,
+            "Usage: %s -a access_key_id -s s_secret_access_key "
+            "[-p port] [-D hexdump_file]\n",
+            argv[0]);
+    exit(1);
+  }
+
+  printf("Starting RESTful server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}

examples/rules.mk

@@ -0,0 +1,13 @@
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. -pthread -DMG_ENABLE_SSL -DMG_ENABLE_IPV6 -DMG_ENABLE_THREADS -lssl -lcrypto $(CFLAGS_EXTRA) $(MODULE_CFLAGS)
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /DMG_ENABLE_SSL /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/server.c

@@ -1,484 +0,0 @@
-// Copyright (c) 2004-2013 Sergey Lyubka
-// Copyright (c) 2013-2014 Cesanta Software Limited
-//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
-//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
-
-#undef UNICODE                    // Use ANSI WinAPI functions
-#undef _UNICODE                   // Use multibyte encoding on Windows
-#define _MBCS                     // Use multibyte encoding on Windows
-#define _WIN32_WINNT 0x500        // Enable MIIM_BITMAP
-#define _CRT_SECURE_NO_WARNINGS   // Disable deprecation warning in VS2005
-#define _XOPEN_SOURCE 600         // For PATH_MAX on linux
-#undef WIN32_LEAN_AND_MEAN        // Let windows.h always include winsock2.h
-
-#include <sys/stat.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <string.h>
-#include <errno.h>
-#include <limits.h>
-#include <stddef.h>
-#include <stdarg.h>
-#include <ctype.h>
-#include <time.h>
-
-#include "mongoose.h"
-
-#ifdef _WIN32
-#include <windows.h>
-#include <direct.h>  // For chdir()
-#include <winsvc.h>
-#include <shlobj.h>
-
-#ifndef PATH_MAX
-#define PATH_MAX MAX_PATH
-#endif
-
-#ifndef S_ISDIR
-#define S_ISDIR(x) ((x) & _S_IFDIR)
-#endif
-
-#define DIRSEP '\\'
-#define snprintf _snprintf
-#define vsnprintf _vsnprintf
-#define sleep(x) Sleep((x) * 1000)
-#define abs_path(rel, abs, abs_size) _fullpath((abs), (rel), (abs_size))
-#define SIGCHLD 0
-typedef struct _stat file_stat_t;
-#define stat(x, y) _stat((x), (y))
-#else
-typedef struct stat file_stat_t;
-#include <sys/wait.h>
-#include <unistd.h>
-#define DIRSEP '/'
-#define __cdecl
-#define abs_path(rel, abs, abs_size) realpath((rel), (abs))
-#endif // _WIN32
-
-#define MAX_OPTIONS 100
-#define MAX_CONF_FILE_LINE_SIZE (8 * 1024)
-
-static int exit_flag;
-static char server_name[50];        // Set by init_server_name()
-static char config_file[PATH_MAX];  // Set by process_command_line_arguments()
-static struct mg_server *server;    // Set by start_mongoose()
-static const char *s_default_document_root = ".";
-static const char *s_default_listening_port = "8080";
-
-#if !defined(CONFIG_FILE)
-#define CONFIG_FILE "mongoose.conf"
-#endif /* !CONFIG_FILE */
-
-static void __cdecl signal_handler(int sig_num) {
-  // Reinstantiate signal handler
-  signal(sig_num, signal_handler);
-
-#ifndef _WIN32
-  // Do not do the trick with ignoring SIGCHLD, cause not all OSes (e.g. QNX)
-  // reap zombies if SIGCHLD is ignored. On QNX, for example, waitpid()
-  // fails if SIGCHLD is ignored, making system() non-functional.
-  if (sig_num == SIGCHLD) {
-    do {} while (waitpid(-1, &sig_num, WNOHANG) > 0);
-  } else
-#endif
-  { exit_flag = sig_num; }
-}
-
-static void vnotify(const char *fmt, va_list ap, int must_exit) {
-  char msg[200];
-
-  vsnprintf(msg, sizeof(msg), fmt, ap);
-  fprintf(stderr, "%s\n", msg);
-
-  if (must_exit) {
-    exit(EXIT_FAILURE);
-  }
-}
-
-static void notify(const char *fmt, ...) {
-  va_list ap;
-  va_start(ap, fmt);
-  vnotify(fmt, ap, 0);
-  va_end(ap);
-}
-
-static void die(const char *fmt, ...) {
-  va_list ap;
-  va_start(ap, fmt);
-  vnotify(fmt, ap, 1);
-  va_end(ap);
-}
-
-static void show_usage_and_exit(void) {
-  const char **names;
-  int i;
-
-  fprintf(stderr, "Mongoose version %s (c) Sergey Lyubka, built on %s\n",
-          MONGOOSE_VERSION, __DATE__);
-  fprintf(stderr, "Usage:\n");
-#ifndef MONGOOSE_NO_AUTH
-  fprintf(stderr, "  mongoose -A <htpasswd_file> <realm> <user> <passwd>\n");
-#endif
-  fprintf(stderr, "  mongoose [config_file]\n");
-  fprintf(stderr, "  mongoose [-option value ...]\n");
-  fprintf(stderr, "\nOPTIONS:\n");
-
-  names = mg_get_valid_option_names();
-  for (i = 0; names[i] != NULL; i += 2) {
-    fprintf(stderr, "  -%s %s\n",
-            names[i], names[i + 1] == NULL ? "<empty>" : names[i + 1]);
-  }
-  exit(EXIT_FAILURE);
-}
-
-#define EV_HANDLER NULL
-
-static char *sdup(const char *str) {
-  char *p;
-  if ((p = (char *) malloc(strlen(str) + 1)) != NULL) {
-    strcpy(p, str);
-  }
-  return p;
-}
-
-static void set_option(char **options, const char *name, const char *value) {
-  int i;
-
-  for (i = 0; i < MAX_OPTIONS - 3; i++) {
-    if (options[i] == NULL) {
-      options[i] = sdup(name);
-      options[i + 1] = sdup(value);
-      options[i + 2] = NULL;
-      break;
-    } else if (!strcmp(options[i], name)) {
-      free(options[i + 1]);
-      options[i + 1] = sdup(value);
-      break;
-    }
-  }
-
-  if (i == MAX_OPTIONS - 3) {
-    die("%s", "Too many options specified");
-  }
-}
-
-static void process_command_line_arguments(char *argv[], char **options) {
-  char line[MAX_CONF_FILE_LINE_SIZE], opt[sizeof(line)], val[sizeof(line)], *p;
-  FILE *fp = NULL;
-  size_t i, cmd_line_opts_start = 1, line_no = 0;
-
-  // Should we use a config file ?
-  if (argv[1] != NULL && argv[1][0] != '-') {
-    snprintf(config_file, sizeof(config_file), "%s", argv[1]);
-    cmd_line_opts_start = 2;
-  } else if ((p = strrchr(argv[0], DIRSEP)) == NULL) {
-    // No command line flags specified. Look where binary lives
-    snprintf(config_file, sizeof(config_file), "%s", CONFIG_FILE);
-  } else {
-    snprintf(config_file, sizeof(config_file), "%.*s%c%s",
-             (int) (p - argv[0]), argv[0], DIRSEP, CONFIG_FILE);
-  }
-
-  fp = fopen(config_file, "r");
-
-  // If config file was set in command line and open failed, die
-  if (cmd_line_opts_start == 2 && fp == NULL) {
-    die("Cannot open config file %s: %s", config_file, strerror(errno));
-  }
-
-  // Load config file settings first
-  if (fp != NULL) {
-    fprintf(stderr, "Loading config file %s\n", config_file);
-
-    // Loop over the lines in config file
-    while (fgets(line, sizeof(line), fp) != NULL) {
-      line_no++;
-
-      // Ignore empty lines and comments
-      for (i = 0; isspace(* (unsigned char *) &line[i]); ) i++;
-      if (line[i] == '#' || line[i] == '\0') {
-        continue;
-      }
-
-      if (sscanf(line, "%s %[^\r\n#]", opt, val) != 2) {
-        printf("%s: line %d is invalid, ignoring it:\n %s",
-               config_file, (int) line_no, line);
-      } else {
-        set_option(options, opt, val);
-      }
-    }
-
-    fclose(fp);
-  }
-
-  // If we're under MacOS and started by launchd, then the second
-  // argument is process serial number, -psn_.....
-  // In this case, don't process arguments at all.
-  if (argv[1] == NULL || memcmp(argv[1], "-psn_", 5) != 0) {
-    // Handle command line flags.
-    // They override config file and default settings.
-    for (i = cmd_line_opts_start; argv[i] != NULL; i += 2) {
-      if (argv[i][0] != '-' || argv[i + 1] == NULL) {
-        show_usage_and_exit();
-      }
-      set_option(options, &argv[i][1], argv[i + 1]);
-    }
-  }
-}
-
-static void init_server_name(void) {
-  const char *descr = "";
-  snprintf(server_name, sizeof(server_name), "Mongoose web server v.%s%s",
-           MONGOOSE_VERSION, descr);
-}
-
-static int is_path_absolute(const char *path) {
-#ifdef _WIN32
-  return path != NULL &&
-    ((path[0] == '\\' && path[1] == '\\') ||  // UNC path, e.g. \\server\dir
-     (isalpha(path[0]) && path[1] == ':' && path[2] == '\\'));  // E.g. X:\dir
-#else
-  return path != NULL && path[0] == '/';
-#endif
-}
-
-static char *get_option(char **options, const char *option_name) {
-  int i;
-
-  for (i = 0; options[i] != NULL; i++)
-    if (!strcmp(options[i], option_name))
-      return options[i + 1];
-
-  return NULL;
-}
-
-static int path_exists(const char *path, int is_dir) {
-  file_stat_t st;
-  return path == NULL || (stat(path, &st) == 0 &&
-                          ((S_ISDIR(st.st_mode) ? 1 : 0) == is_dir));
-}
-
-static void verify_existence(char **options, const char *name, int is_dir) {
-  const char *path = get_option(options, name);
-  if (!path_exists(path, is_dir)) {
-    notify("Invalid path for %s: [%s]: (%s). Make sure that path is either "
-           "absolute, or it is relative to mongoose executable.",
-           name, path, strerror(errno));
-  }
-}
-
-static void set_absolute_path(char *options[], const char *option_name,
-                              const char *path_to_mongoose_exe) {
-  char path[PATH_MAX], abs[PATH_MAX], *option_value;
-  const char *p;
-
-  // Check whether option is already set
-  option_value = get_option(options, option_name);
-
-  // If option is already set and it is an absolute path,
-  // leave it as it is -- it's already absolute.
-  if (option_value != NULL && !is_path_absolute(option_value)) {
-    // Not absolute. Use the directory where mongoose executable lives
-    // be the relative directory for everything.
-    // Extract mongoose executable directory into path.
-    if ((p = strrchr(path_to_mongoose_exe, DIRSEP)) == NULL) {
-      getcwd(path, sizeof(path));
-    } else {
-      snprintf(path, sizeof(path), "%.*s", (int) (p - path_to_mongoose_exe),
-               path_to_mongoose_exe);
-    }
-
-    strncat(path, "/", sizeof(path) - 1);
-    strncat(path, option_value, sizeof(path) - 1);
-
-    // Absolutize the path, and set the option
-    abs_path(path, abs, sizeof(abs));
-    set_option(options, option_name, abs);
-  }
-}
-
-#ifndef MONGOOSE_NO_AUTH
-int modify_passwords_file(const char *fname, const char *domain,
-                          const char *user, const char *pass) {
-  int found;
-  char line[512], u[512], d[512], ha1[33], tmp[PATH_MAX];
-  FILE *fp, *fp2;
-
-  found = 0;
-  fp = fp2 = NULL;
-
-  // Regard empty password as no password - remove user record.
-  if (pass != NULL && pass[0] == '\0') {
-    pass = NULL;
-  }
-
-  (void) snprintf(tmp, sizeof(tmp), "%s.tmp", fname);
-
-  // Create the file if does not exist
-  if ((fp = fopen(fname, "a+")) != NULL) {
-    fclose(fp);
-  }
-
-  // Open the given file and temporary file
-  if ((fp = fopen(fname, "r")) == NULL) {
-    return 0;
-  } else if ((fp2 = fopen(tmp, "w+")) == NULL) {
-    fclose(fp);
-    return 0;
-  }
-
-  // Copy the stuff to temporary file
-  while (fgets(line, sizeof(line), fp) != NULL) {
-    if (sscanf(line, "%[^:]:%[^:]:%*s", u, d) != 2) {
-      continue;
-    }
-
-    if (!strcmp(u, user) && !strcmp(d, domain)) {
-      found++;
-      if (pass != NULL) {
-        mg_md5(ha1, user, ":", domain, ":", pass, NULL);
-        fprintf(fp2, "%s:%s:%s\n", user, domain, ha1);
-      }
-    } else {
-      fprintf(fp2, "%s", line);
-    }
-  }
-
-  // If new user, just add it
-  if (!found && pass != NULL) {
-    mg_md5(ha1, user, ":", domain, ":", pass, NULL);
-    fprintf(fp2, "%s:%s:%s\n", user, domain, ha1);
-  }
-
-  // Close files
-  fclose(fp);
-  fclose(fp2);
-
-  // Put the temp file in place of real file
-  remove(fname);
-  rename(tmp, fname);
-
-  return 1;
-}
-#endif
-
-static void start_mongoose(int argc, char *argv[]) {
-  char *options[MAX_OPTIONS];
-  int i;
-
-  if ((server = mg_create_server(NULL, EV_HANDLER)) == NULL) {
-    die("%s", "Failed to start Mongoose.");
-  }
-
-#ifndef MONGOOSE_NO_AUTH
-  // Edit passwords file if -A option is specified
-  if (argc > 1 && !strcmp(argv[1], "-A")) {
-    if (argc != 6) {
-      show_usage_and_exit();
-    }
-    exit(modify_passwords_file(argv[2], argv[3], argv[4], argv[5]) ?
-         EXIT_SUCCESS : EXIT_FAILURE);
-  }
-#endif
-
-  // Show usage if -h or --help options are specified
-  if (argc == 2 && (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))) {
-    show_usage_and_exit();
-  }
-
-  options[0] = NULL;
-  set_option(options, "document_root", s_default_document_root);
-  set_option(options, "listening_port", s_default_listening_port);
-
-  // Update config based on command line arguments
-  process_command_line_arguments(argv, options);
-
-  // Make sure we have absolute paths for files and directories
-  // https://github.com/valenok/mongoose/issues/181
-  set_absolute_path(options, "document_root", argv[0]);
-  set_absolute_path(options, "dav_auth_file", argv[0]);
-  set_absolute_path(options, "cgi_interpreter", argv[0]);
-  set_absolute_path(options, "access_log_file", argv[0]);
-  set_absolute_path(options, "global_auth_file", argv[0]);
-  set_absolute_path(options, "ssl_certificate", argv[0]);
-
-  if (!path_exists(get_option(options, "document_root"), 1)) {
-    set_option(options, "document_root", s_default_document_root);
-    set_absolute_path(options, "document_root", argv[0]);
-    notify("Setting document_root to [%s]",
-           mg_get_option(server, "document_root"));
-  }
-
-  // Make extra verification for certain options
-  verify_existence(options, "document_root", 1);
-  verify_existence(options, "cgi_interpreter", 0);
-  verify_existence(options, "ssl_certificate", 0);
-
-  for (i = 0; options[i] != NULL; i += 2) {
-    const char *msg = mg_set_option(server, options[i], options[i + 1]);
-    if (msg != NULL) {
-      notify("Failed to set option [%s] to [%s]: %s",
-             options[i], options[i + 1], msg);
-      if (!strcmp(options[i], "listening_port")) {
-        mg_set_option(server, "listening_port", s_default_listening_port);
-        notify("Setting %s to [%s]", options[i], s_default_listening_port);
-      }
-    }
-    free(options[i]);
-    free(options[i + 1]);
-  }
-
-  // Change current working directory to document root. This way,
-  // scripts can use relative paths.
-  chdir(mg_get_option(server, "document_root"));
-
-  // Add an ability to pass listening socket to mongoose
-  {
-    const char *env = getenv("MONGOOSE_LISTENING_SOCKET");
-    if (env != NULL && atoi(env) > 0 ) {
-      mg_set_listening_socket(server, atoi(env));
-    }
-  }
-
-  // Setup signal handler: quit on Ctrl-C
-  signal(SIGTERM, signal_handler);
-  signal(SIGINT, signal_handler);
-#ifndef _WIN32
-  signal(SIGCHLD, signal_handler);
-#endif
-}
-
-int main(int argc, char *argv[]) {
-  init_server_name();
-  start_mongoose(argc, argv);
-  printf("%s serving [%s] on port %s\n",
-         server_name, mg_get_option(server, "document_root"),
-         mg_get_option(server, "listening_port"));
-  fflush(stdout);  // Needed, Windows terminals might not be line-buffered
-  while (exit_flag == 0) {
-    mg_poll_server(server, 1000);
-  }
-  printf("Exiting on signal %d ...", exit_flag);
-  fflush(stdout);
-  mg_destroy_server(&server);
-  printf("%s\n", " done.");
-
-  return EXIT_SUCCESS;
-}

examples/settings_panel_for_a_device/Makefile

@@ -0,0 +1,11 @@
+PROG = settings_panel
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. -DMG_ENABLE_SSL -lssl -lcrypto $(CFLAGS_EXTRA)
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)

examples/settings_panel_for_a_device/settings_panel.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, "HTTP/1.1 200 OK\r\nContent-Length: %lu\r\n\r\n%.*s",
+            (unsigned long) hm->body.len, (int) hm->body.len, hm->body.p);
+}
+
+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);                    /* Handle RESTful call */
+      } 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(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  char *p, path[512];
+
+  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";
+  s_http_server_opts.auth_domain = "example.com";
+  //mgr.hexdump_file = "/dev/stdout";
+
+  /* If our current directory */
+  if (argc > 0 && (p = strrchr(argv[0], '/'))) {
+    snprintf(path, sizeof(path), "%.*s/web_root", (int)(p - argv[0]), argv[0]);
+    s_http_server_opts.document_root = path;
+  }
+
+  printf("Starting device configurator on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}