Mongoose 6.0 -> 6.1

PUBLISHED_FROM=22408f9340bbbbf186bd551dd30564efe0c253e3
Add documentation for the mongoose binary
2026-10-26 12:14:56 +00:00 · 2015-11-30 12:27:59 +00:00 · 2015-11-30 12:27:59 +00:00 · 2015-11-30 12:27:58 +00:00 · 2015-11-30 12:27:58 +00:00 · 2015-11-30 12:27:57 +00:00
170 changed files with 166298 additions and 9587 deletions
@@ -1,19 +1,16 @@
-Copyright (c) 2004-2010 Sergey Lyubka
+Copyright (c) 2004-2013 Sergey Lyubka <valenok@gmail.com>
+Copyright (c) 2013-2015 Cesanta Software Limited
+All rights reserved

-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
+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/>.

-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
+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.

-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.
+Alternatively, you can license this software under a commercial
+license, as set out in <https://www.cesanta.com/license>.
@@ -1,163 +0,0 @@
-# This file is part of Mongoose project, http://code.google.com/p/mongoose
-# $Id: Makefile 473 2009-09-02 11:20:06Z valenok $
-
-PROG=	mongoose
-
-all:
-	@echo "make (linux|bsd|solaris|mac|windows|mingw|cygwin)"
-
-# Possible COPT values: (in brackets are rough numbers for 'gcc -O2' on i386)
-# -DHAVE_MD5              - use system md5 library (-2kb)
-# -DNDEBUG                - strip off all debug code (-5kb)
-# -DDEBUG                 - build debug version (very noisy) (+7kb)
-# -DNO_CGI                - disable CGI support (-5kb)
-# -DNO_SSL                - disable SSL functionality (-2kb)
-# -DNO_SSL_DL             - link against system libssl library (-1kb)
-# -DCONFIG_FILE=\"file\"  - use `file' as the default config file
-# -DSSL_LIB=\"libssl.so.<version>\"   - use system versioned SSL shared object
-# -DCRYPTO_LIB=\"libcrypto.so.<version>\" - use system versioned CRYPTO so
-# -DUSE_LUA               - embed Lua in Mongoose (+100kb)
-
-
-##########################################################################
-###                 UNIX build: linux, bsd, mac, rtems
-##########################################################################
-
-# To build with Lua, download and unzip Lua 5.2.1 source code into the
-# mongoose directory, and then add $(LUA_FLAGS) to CFLAGS below
-LUA         = lua-5.2.1/src
-LUA_FLAGS   = -DUSE_LUA -I$(LUA) -L$(LUA) -llua -lm
-
-GCC_WARNS   = -W -Wall -pedantic
-CFLAGS      = -std=c99 -O2 $(GCC_WARNS) $(COPT)
-MAC_SHARED  = -flat_namespace -bundle -undefined suppress
-LINFLAGS    = -ldl -pthread $(CFLAGS)
-LIB         = lib$(PROG).so$(MONGOOSE_LIB_SUFFIX)
-
-# Make sure that the compiler flags come last in the compilation string.
-# If not so, this can break some on some Linux distros which use
-# "-Wl,--as-needed" turned on by default  in cc command.
-# Also, this is turned in many other distros in static linkage builds.
-linux:
-	$(CC) mongoose.c -shared -fPIC -fpic -o $(LIB) -Wl,-soname,$(LIB) $(LINFLAGS)
-	$(CC) mongoose.c main.c -o $(PROG) $(LINFLAGS)
-
-bsd:
-	$(CC) mongoose.c -shared -pthread -fpic -fPIC -o $(LIB) $(CFLAGS)
-	$(CC) mongoose.c main.c -pthread -o $(PROG) $(CFLAGS)
-
-mac:
-	$(CC) mongoose.c -pthread -o $(LIB) $(MAC_SHARED) $(CFLAGS)
-	$(CC) mongoose.c main.c -pthread -o $(PROG) $(CFLAGS)
-
-solaris:
-	$(CC) mongoose.c -pthread -lnsl \
-		-lsocket -fpic -fPIC -shared -o $(LIB) $(CFLAGS)
-	$(CC) mongoose.c main.c -pthread -lnsl -lsocket -o $(PROG) $(CFLAGS)
-
-
-##########################################################################
-###            WINDOWS build: Using Visual Studio or Mingw
-##########################################################################
-
-# Using Visual Studio 6.0. To build Mongoose:
-#  o  Set MSVC variable below to where VS 6.0 is installed on your system
-#  o  Run "PATH_TO_VC6\bin\nmake windows"
-
-MSVC  = e:/vc6
-CYA   = e:/cyassl-2.0.0rc2
-#DBG  = /Zi /DDEBUG /Od
-DBG   = /DNDEBUG /O1
-CL    = $(MSVC)/bin/cl /MD /TC /nologo $(DBG) /Gz /W3 /DNO_SSL_DL \
-        /I$(MSVC)/include /DUSE_LUA /I$(LUA)
-GUILIB= user32.lib shell32.lib
-LINK  = /link /incremental:no /libpath:$(MSVC)/lib /machine:IX86 \
-        /subsystem:windows ws2_32.lib advapi32.lib cyassl.lib lua.lib
-CYAFL = /c /I $(CYA)/include -I $(CYA)/include/openssl /I$(MSVC)/INCLUDE \
-        /I $(CYA)/ctaocrypt/include /D _LIB /D OPENSSL_EXTRA
-
-LUA_SOURCES = $(LUA)/lapi.c $(LUA)/lcode.c $(LUA)/lctype.c \
-              $(LUA)/ldebug.c $(LUA)/ldo.c $(LUA)/ldump.c \
-              $(LUA)/lfunc.c $(LUA)/lgc.c $(LUA)/llex.c \
-              $(LUA)/lmem.c $(LUA)/lobject.c $(LUA)/lopcodes.c \
-              $(LUA)/lparser.c $(LUA)/lstate.c $(LUA)/lstring.c \
-              $(LUA)/ltable.c $(LUA)/ltm.c $(LUA)/lundump.c \
-              $(LUA)/lvm.c $(LUA)/lzio.c $(LUA)/lauxlib.c \
-              $(LUA)/lbaselib.c $(LUA)/lbitlib.c $(LUA)/lcorolib.c \
-              $(LUA)/ldblib.c $(LUA)/liolib.c $(LUA)/lmathlib.c \
-              $(LUA)/loslib.c $(LUA)/lstrlib.c $(LUA)/ltablib.c \
-              $(LUA)/loadlib.c $(LUA)/linit.c
-LUA_OBJECTS = $(LUA_SOURCES:%.c=%.o)
-
-CYA_SOURCES = $(CYA)/src/cyassl_int.c $(CYA)/src/cyassl_io.c \
-              $(CYA)/src/keys.c $(CYA)/src/tls.c $(CYA)/src/ssl.c \
-              $(CYA)/ctaocrypt/src/aes.c $(CYA)/ctaocrypt/src/arc4.c \
-              $(CYA)/ctaocrypt/src/asn.c $(CYA)/ctaocrypt/src/coding.c \
-              $(CYA)/ctaocrypt/src/ctc_asm.c $(CYA)/ctaocrypt/src/ctc_misc.c \
-              $(CYA)/ctaocrypt/src/cyassl_memory.c $(CYA)/ctaocrypt/src/des3.c \
-              $(CYA)/ctaocrypt/src/dh.c $(CYA)/ctaocrypt/src/dsa.c \
-              $(CYA)/ctaocrypt/src/ecc.c $(CYA)/ctaocrypt/src/hc128.c \
-              $(CYA)/ctaocrypt/src/hmac.c $(CYA)/ctaocrypt/src/integer.c \
-              $(CYA)/ctaocrypt/src/md4.c $(CYA)/ctaocrypt/src/md5.c \
-              $(CYA)/ctaocrypt/src/pwdbased.c $(CYA)/ctaocrypt/src/rabbit.c \
-              $(CYA)/ctaocrypt/src/random.c $(CYA)/ctaocrypt/src/ripemd.c \
-              $(CYA)/ctaocrypt/src/rsa.c $(CYA)/ctaocrypt/src/sha.c \
-              $(CYA)/ctaocrypt/src/sha256.c $(CYA)/ctaocrypt/src/sha512.c \
-              $(CYA)/ctaocrypt/src/tfm.c
-
-cyassl.lib:
-	$(CL) /Fo$(CYA)/ $(CYA_SOURCES) $(CYAFL) $(DEF)
-	$(MSVC)/bin/lib $(CYA)/*.obj /out:$@
-
-lua.lib:
-	$(CL) /c /Fo$(LUA)/ $(LUA_SOURCES)
-	$(MSVC)/bin/lib $(LUA_SOURCES:%.c=%.obj) /out:$@
-
-windows: cyassl.lib lua.lib
-	$(MSVC)/bin/rc win32\res.rc
-	$(CL) /I win32 main.c mongoose.c /GA $(LINK) win32\res.res \
-		$(GUILIB) /out:$(PROG).exe
-	$(CL) mongoose.c /GD $(LINK) /DLL /DEF:win32\dll.def /out:$(PROG).dll
-
-# Build for Windows under MinGW
-#MINGWDBG= -DDEBUG -O0 -ggdb
-MINGWDBG= -DNDEBUG -Os
-MINGWOPT=  -W -Wall -mthreads -Wl,--subsystem,console $(MINGWDBG) -DHAVE_STDINT $(GCC_WARNINGS) $(COPT)
-#MINGWOPT= -W -Wall -mthreads -Wl,--subsystem,windows $(MINGWDBG) -DHAVE_STDINT $(GCC_WARNINGS) $(COPT)
-mingw:
-	windres win32\res.rc win32\res.o
-	$(CC) $(MINGWOPT) mongoose.c -lws2_32 \
-		-shared -Wl,--out-implib=$(PROG).lib -o $(PROG).dll
-	$(CC) $(MINGWOPT) -Iwin32 mongoose.c main.c win32\res.o -lws2_32 -ladvapi32 \
-		-o $(PROG).exe
-
-# Build for Windows under Cygwin
-#CYGWINDBG= -DDEBUG -O0 -ggdb
-CYGWINDBG= -DNDEBUG -Os
-CYGWINOPT=  -W -Wall -mthreads -Wl,--subsystem,console $(CYGWINDBG) -DHAVE_STDINT $(GCC_WARNINGS) $(COPT)
-cygwin:
-	windres ./win32/res.rc ./win32/res.o
-	$(CC) $(CYGWINOPT) mongoose.c -lws2_32 \
-		-shared -Wl,--out-implib=$(PROG).lib -o $(PROG).dll
-	$(CC) $(CYGWINOPT) -Iwin32 mongoose.c main.c ./win32/res.o -lws2_32 \
-  -ladvapi32 -o $(PROG).exe
-
-##########################################################################
-###            Manuals, cleanup, test, release
-##########################################################################
-
-man:
-	groff -man -T ascii mongoose.1 | col -b > mongoose.txt
-	groff -man -T ascii mongoose.1 | less
-
-# "TEST=unit make test" - perform unit test only
-# "TEST=embedded" - test embedded API by building and testing test/embed.c
-# "TEST=basic_tests" - perform basic tests only (no CGI, SSI..)
-tests:
-	perl test/test.pl $(TEST)
-
-release: clean
-	F=mongoose-`perl -lne '/define\s+MONGOOSE_VERSION\s+"(\S+)"/ and print $$1' mongoose.c`.tgz ; cd .. && tar -czf x mongoose/{LICENSE,Makefile,bindings,examples,test,win32,mongoose.c,mongoose.h,mongoose.1,main.c} && mv x mongoose/$$F
-
-clean:
-	rm -rf *.o *.core $(PROG) *.obj *.so $(PROG).txt *.dSYM *.tgz $(PROG).exe *.dll *.lib win32/res.o
@@ -1,35 +1,107 @@
-Overview
--------
+# <img src="http://www.cesanta.com/hubfs/www.cesanta.com/Images/mongoose_library.png" width="64" height="64"> Mongoose - Embedded Web Server

-Mongoose is easy to use web server. It also can be used as embedded web server library to provide web interface to applications.  
+[![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)

-Mongoose executable does not depend on any external library or configuration. If it is copied to any directory and launched from there, it starts to serve that directory on port 8080 (so to access files, go to http://localhost:8080). If some additional config is required - for example, different listening port or IP-based access control, that can be done via command line flags or configuration file, which should be created in the same directory where mongoose itself lives. This makes Mongoose perfect for all sorts of demos, quick tests, file sharing, and Web programming.
+![](https://img.shields.io/badge/license-GPL_2-green.svg "License")


-Features
--------
+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.

- Crossplatform - works on Windows, MacOS and most flavors of UNIX
- CGI, SSL, SSI, Digest (MD5) authorization, Websocket, WEbDAV support
- Lua server pages (like PHP, but using Lua as a language instead of PHP)
- Resumed download, URL rewrite, IP-based ACL, Windows service
- Excluding files from serving by URI pattern (file blacklist)
- Download speed limit based on client subnet or URI pattern
- Small footprint: executable size is 50 kB on Linux 2.6 i386 system
- 130 kilobytes Windows executable with all of the above compiled in, and no dependencies
- Embeddable with simple and clean API ([mongoose.h](https://github.com/valenok/mongoose/blob/master/mongoose.h)). The source is in single [mongoose.c](https://github.com/valenok/mongoose/blob/master/mongoose.c) file to make things easy.
- Embedding examples: [hello.c](https://github.com/valenok/mongoose/blob/master/examples/hello.c), [post.c](https://github.com/valenok/mongoose/blob/master/examples/post.c), [upload.c](https://github.com/valenok/mongoose/blob/master/examples/upload.c), [websocket.c](https://github.com/valenok/mongoose/blob/master/examples/websocket.c)
- Super-liberal MIT license, great for commercial users!
+It provides easy to use event-driven interface that allows to implement
+network protocols or scalable network applications  with little effort.
+Mongoose helps developers to manage the complexity of network programming
+and let them concentrate on the logic, saving time and money.
+
+[Download Mongoose Source Code here](http://hubs.ly/H01bWvx0)
+
+> Nothing overdone. Nothing less. So unbelievably easy to use.
+> Just how good software should be! -- Pritin Tyagaraj, SAP


-Mailing list
------------
+# Features

-You can read it online, subscribe to, or send a message at [mongoose-users](http://groups.google.com/group/mongoose-users).
+* 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
+
+# Examples & Documentation
+
+- [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)
+
+# Contributions
+
+People who have agreed to the
+[Cesanta CLA](https://docs.cesanta.com/contributors_la.shtml)
+can make contributions. Note that the CLA isn't a copyright
+_assigment_ but rather a copyright _license_.
+You retain the copyright on your contributions.
+
+# Licensing
+
+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.
+
+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


-Keep Sergey happy
-----------------
+[Enquire about commercial licensing here](https://www.cesanta.com/contact)

-I have a [books wishlist](http://amzn.com/w/1OC2ZCPTQYIEP?sort=priority) on Amazon. If you feel brave, you can buy me a book!
-Many thanks to all who already did so: T.Barmann, D.Hughes, J.C.Sloan and 4 others. Appreciated, guys, you keep my brains going!
+# 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/products#binary)
+
+# 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
@@ -1,52 +0,0 @@
-// This is C# example on how to use Mongoose embeddable web server,
-// http://code.google.com/p/mongoose
-//
-// Before using the mongoose module, make sure that Mongoose shared library is
-// built and present in the current (or system library) directory
-
-using System;
-using System.Runtime.InteropServices;
-
-public class Program {
-
-	// This function is called when user types in his browser http://127.0.0.1:8080/foo
-	static private void UriHandler(MongooseConnection conn, MongooseRequestInfo ri) {
-		conn.write("HTTP/1.1 200 OK\r\n\r\n");
-		conn.write("Hello from C#!\n");
-		conn.write("Your user-agent is: " + conn.get_header("User-Agent") + "\n");
-	}
-
-    static private void UriDumpInfo(MongooseConnection conn, MongooseRequestInfo ri)
-    {
-        conn.write("HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n");
-        conn.write("<html><body><head>Calling Info</head>");
-        conn.write("<p>Request: " + ri.request_method + "</p>");
-        conn.write("<p>URI: " + ri.uri + "</p>");
-        conn.write("<p>Query: " + ri.query_string + "</p>");
-        if (ri.post_data_len > 0) conn.write("<p>Post(" + ri.post_data_len + ")[@" + ri.post_data + "]: '" + Marshal.PtrToStringAnsi(ri.post_data) + "'</p>");
-        conn.write("<p>User:" + ri.remote_user + "</p>");
-        conn.write("<p>IP: " + ri.remote_ip + "</p>");
-        conn.write("<p>HTTP: " + ri.http_version + "</p>");
-        conn.write("<p>Port: " + ri.remote_port + "</p>");
-        conn.write("<p>NUM Headers: " + ri.num_headers + "</p>");
-        for (int i = 0; i < Math.Min(64, ri.num_headers); i++)
-        {
-            conn.write("<p>" + i + ":" + Marshal.PtrToStringAnsi(ri.http_headers[i].name)
-                + ":" + Marshal.PtrToStringAnsi(ri.http_headers[i].value) + "</p>");
-        }
-        conn.write("</body></html>");
-    }
-
-	static void Main() {
-		Mongoose web_server = new Mongoose();
-
-		// Set options and /foo URI handler
-		web_server.set_option("ports", "8080");
-		web_server.set_option("root", "c:\\");
-		web_server.set_uri_callback("/foo", new MongooseCallback(UriHandler));
-        web_server.set_uri_callback("/dumpinfo", new MongooseCallback(UriDumpInfo));
-
-		// Serve requests until user presses "enter" on a keyboard
-		Console.ReadLine();
-	}
-}
@@ -1,134 +0,0 @@
-//  Copyright (c) 2004-2009 Sergey Lyubka
-//
-//  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.
-//
-//  $Id: mongoose.cs 472 2009-08-30 22:40:29Z spsone1 $
-
-using System;
-using System.Runtime.InteropServices;
-
-
-[StructLayout(LayoutKind.Sequential)] public struct MongooseHeader {
-	public IntPtr	name;		// Using IntPtr here because if we use strings here,
-	public IntPtr	value;		// it won't be properly marshalled.
-};
-
-// This is "struct mg_request_info" from mongoose.h header file
-[StructLayout(LayoutKind.Sequential)] public struct MongooseRequestInfo {
-	public string	request_method;
-	public string	uri;
-	public string	http_version;
-	public string	query_string;
-	public IntPtr	post_data;
-	public string	remote_user;
-	public int	remote_ip; //int to match the 32bit declaration in c
-	public int	remote_port;
-	public int	post_data_len;
-	public int	status_code;
-	public int	num_headers;
-	[MarshalAs(UnmanagedType.ByValArray,SizeConst=64)] public MongooseHeader[] http_headers;
-};
-
-// This is a delegate for mg_callback_t from mongoose.h header file
-[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-public delegate void MongooseCallback2(IntPtr conn, ref MongooseRequestInfo ri, IntPtr user_data);
-
-// This is a delegate to be used by the application
-public delegate void MongooseCallback(MongooseConnection conn, MongooseRequestInfo ri);
-
-public class Mongoose {
-	public string version;
-	private IntPtr ctx;
-    	//These two events are here to store a ref to the callbacks while they are over in unmanaged code. 
-    	private event MongooseCallback2 delegates2;
-    	private event MongooseCallback delegates1;
-
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern IntPtr	mg_start();
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern void	mg_stop(IntPtr ctx);
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern string	mg_version();
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern int	mg_set_option(IntPtr ctx, string name, string value);
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern string	mg_get_option(IntPtr ctx, string name);
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern void	mg_set_uri_callback(IntPtr ctx, string uri_regex, MulticastDelegate func, IntPtr data);
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern void	mg_set_log_callback(IntPtr ctx, MulticastDelegate func);
-
-	public Mongoose() {
-		ctx = mg_start();
-		version = mg_version();
-	}
-
-	~Mongoose() {
-		mg_stop(this.ctx);
-		this.ctx = IntPtr.Zero;
-	}
-
-	public int set_option(string option_name, string option_value) {
-		return mg_set_option(this.ctx, option_name, option_value);
-	}
-
-	public string get_option(string option_name) {
-		return mg_get_option(this.ctx, option_name);
-	}
-
-	public void set_uri_callback(string uri_regex, MongooseCallback func) {
-		// Build a closure around user function. Initialize connection object there which wraps
-		// mg_write() and other useful methods, and then call user specified handler.
-		MongooseCallback2 callback = delegate(IntPtr conn, ref MongooseRequestInfo ri, IntPtr user_data) {
-			MongooseConnection connection = new MongooseConnection(conn, this);
-			func(connection, ri);
-		};
-        	// store a reference to the callback so it won't be GC'ed while its over in unmanged code
-        	delegates2 += callback;
-		mg_set_uri_callback(this.ctx, uri_regex, callback, IntPtr.Zero);
-	}
-	
-	public void set_log_callback(MongooseCallback func) {
-		delegates1 += func;
-		mg_set_log_callback(this.ctx, func);
-	}
-}
-
-public class MongooseConnection {
-	public Mongoose	mongoose;
-	private IntPtr conn;
-
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern string	mg_get_header(IntPtr ctx, string name);
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern string	mg_get_var(IntPtr ctx, string name);
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] private static extern void	mg_free(IntPtr ptr);
-	[DllImport("_mongoose",CallingConvention=CallingConvention.Cdecl)] public static extern int	mg_write(IntPtr conn, string data, int length);
-
-	public MongooseConnection(IntPtr conn_, Mongoose mongoose_) {
-		mongoose = mongoose_;
-		conn = conn_;
-	}
-
-	public string get_header(string header_name) {
-		return mg_get_header(this.conn, header_name);
-	}
-
-	public string get_var(string header_name) {
-		string s = mg_get_var(this.conn, header_name);
-		string copy = "" + s;
-		mg_free(Marshal.StringToHGlobalAnsi(s));
-		return copy;
-	}
-
-	public int write(string data) {
-		return mg_write(this.conn, data, data.Length);
-	}
-}
@@ -1,63 +0,0 @@
-# This is Python example on how to use Mongoose embeddable web server,
-# http://code.google.com/p/mongoose
-#
-# Before using the mongoose module, make sure that Mongoose shared library is
-# built and present in the current (or system library) directory
-
-import mongoose
-import sys
-
-# Handle /show and /form URIs.
-def EventHandler(event, conn):
-    info = conn.info
-    if event == mongoose.HTTP_ERROR:
-        conn.write('HTTP/1.0 200 OK\r\n')
-        conn.write('Content-Type: text/plain\r\n\r\n')
-        return True
-    elif event == mongoose.NEW_REQUEST and info.uri == '/show':
-        conn.write('HTTP/1.0 200 OK\r\n')
-        conn.write('Content-Type: text/plain\r\n\r\n')
-        conn.write('[%s] [%s] [%s]\n' % (info.request_method, info.uri,
-          info.query_string))
-        if info.request_method == 'POST':
-            content_len = conn.get_header('Content-Length')
-            post_data = conn.read(int(content_len))
-            my_var = conn.get_var(post_data, 'my_var')
-        else:
-            my_var = conn.get_var(info.query_string, 'my_var')
-        conn.write('my_var: %s\n' % (my_var or '<not set>'))
-        conn.write('HEADERS: \n')
-        for header in info.http_headers[:info.num_headers]:
-            conn.write('  %s: %s\n' % (header.name, header.value))
-        return True
-    elif event == mongoose.NEW_REQUEST and info.uri == '/form':
-        conn.write('HTTP/1.0 200 OK\r\n'
-               'Content-Type: text/html\r\n\r\n'
-               'Use GET: <a href="/show?my_var=hello">link</a>'
-               '<form action="/show" method="POST">'
-               'Use POST: type text and submit: '
-               '<input type="text" name="my_var"/>'
-               '<input type="submit"/>'
-               '</form>')
-        return True
-    elif event == mongoose.NEW_REQUEST and info.uri == '/secret':
-        conn.send_file('/etc/passwd')
-        return True
-    else:
-        return False
-
-
-# Create mongoose object, and register '/foo' URI handler
-# List of options may be specified in the contructor
-server = mongoose.Mongoose(EventHandler,
-                           document_root='/tmp',
-                           listening_ports='8080')
-
-print ('Mongoose started on port %s, press enter to quit'
-       % server.get_option('listening_ports'))
-
-sys.stdin.read(1)
-
-# Deleting server object stops all serving threads
-print 'Stopping server.'
-del server
@@ -1,166 +0,0 @@
-#  Copyright (c) 2004-2009 Sergey Lyubka
-#
-#  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.
-#
-#  $Id: mongoose.py 471 2009-08-30 14:30:21Z valenok $
-
-"""
-This module provides python binding for the Mongoose web server.
-
-There are two classes defined:
-
-  Connection: - wraps all functions that accept struct mg_connection pointer
-  as first argument.
-
-  Mongoose: wraps all functions that accept struct mg_context pointer as
-  first argument.
-
-  Creating Mongoose object automatically starts server, deleting object
-  automatically stops it. There is no need to call mg_start() or mg_stop().
-"""
-
-
-import ctypes
-import os
-
-
-NEW_REQUEST       = 0
-REQUEST_COMPLETE  = 1
-HTTP_ERROR        = 2
-EVENT_LOG         = 3
-INIT_SSL          = 4
-WEBSOCKET_CONNECT = 5
-WEBSOCKET_READY   = 6
-WEBSOCKET_MESSAGE = 7
-WEBSOCKET_CLOSE   = 8
-OPEN_FILE         = 9
-INIT_LUA          = 10
-
-
-class mg_header(ctypes.Structure):
-  """A wrapper for struct mg_header."""
-  _fields_ = [
-    ('name', ctypes.c_char_p),
-    ('value', ctypes.c_char_p),
-  ]
-
-
-class mg_request_info(ctypes.Structure):
-  """A wrapper for struct mg_request_info."""
-  _fields_ = [
-    ('request_method', ctypes.c_char_p),
-    ('uri', ctypes.c_char_p),
-    ('http_version', ctypes.c_char_p),
-    ('query_string', ctypes.c_char_p),
-    ('remote_user', ctypes.c_char_p),
-    ('remote_ip', ctypes.c_long),
-    ('remote_port', ctypes.c_int),
-    ('is_ssl', ctypes.c_int),
-    ('num_headers', ctypes.c_int),
-    ('http_headers', mg_header * 64),
-    ('user_data', ctypes.c_void_p),
-    ('ev_data', ctypes.c_void_p),
-  ]
-
-
-mg_callback_t = ctypes.CFUNCTYPE(ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p)
-
-
-class Connection(object):
-  """A wrapper class for all functions that take
-  struct mg_connection * as the first argument."""
-
-  def __init__(self, mongoose, connection):
-    self.m = mongoose
-    self.conn = ctypes.c_void_p(connection)
-    self.info = self.m.dll.mg_get_request_info(self.conn).contents
-
-  def get_header(self, name):
-    val = self.m.dll.mg_get_header(self.conn, name)
-    return ctypes.c_char_p(val).value
-
-  def get_var(self, data, name):
-    size = data and len(data) or 0
-    buf = ctypes.create_string_buffer(size)
-    n = self.m.dll.mg_get_var(data, size, name, buf, size)
-    return n >= 0 and buf or None
-
-  def printf(self, fmt, *args):
-    val = self.m.dll.mg_printf(self.conn, fmt, *args)
-    return ctypes.c_int(val).value
-
-  def write(self, data):
-    val = self.m.dll.mg_write(self.conn, data, len(data))
-    return ctypes.c_int(val).value
-
-  def read(self, size):
-    buf = ctypes.create_string_buffer(size)
-    n = self.m.dll.mg_read(self.conn, buf, size)
-    return n <= 0 and None or buf[:n]
-
-  def send_file(self, path):
-    self.m.dll.mg_send_file(self.conn, path)
-
-
-class Mongoose(object):
-  """A wrapper class for Mongoose shared library."""
-
-  def __init__(self, callback, **kwargs):
-    if os.name == 'nt':
-      self.dll = ctypes.WinDLL('mongoose.dll')
-    else:
-      self.dll = ctypes.CDLL('libmongoose.so')
-
-    self.dll.mg_start.restype = ctypes.c_void_p
-    self.dll.mg_modify_passwords_file.restype = ctypes.c_int
-    self.dll.mg_read.restype = ctypes.c_int
-    self.dll.mg_write.restype = ctypes.c_int
-    self.dll.mg_printf.restype = ctypes.c_int
-    self.dll.mg_get_header.restype = ctypes.c_char_p
-    self.dll.mg_get_var.restype = ctypes.c_int
-    self.dll.mg_get_cookie.restype = ctypes.c_int
-    self.dll.mg_get_option.restype = ctypes.c_char_p
-    self.dll.mg_get_request_info.restype = ctypes.POINTER(mg_request_info)
-
-    if callback:
-      # Create a closure that will be called by the  shared library.
-      def func(event, connection):
-        # Wrap connection pointer into the connection
-        # object and call Python callback
-        conn = Connection(self, connection)
-        return callback(event, conn) and 1 or 0
-
-      # Convert the closure into C callable object
-      self.callback = mg_callback_t(func)
-      self.callback.restype = ctypes.c_char_p
-    else:
-      self.callback = ctypes.c_void_p(0)
-
-    args = [y for x in kwargs.items() for y in x] + [None]
-    options = (ctypes.c_char_p * len(args))(*args)
-
-    ret = self.dll.mg_start(self.callback, 0, options)
-    self.ctx = ctypes.c_void_p(ret)
-
-  def __del__(self):
-    """Destructor, stop Mongoose instance."""
-    self.dll.mg_stop(self.ctx)
-
-  def get_option(self, name):
-    return self.dll.mg_get_option(self.ctx, name)
@@ -0,0 +1 @@
+*.exe
@@ -0,0 +1,118 @@
+#############################################################
+# Required variables for each makefile
+# Discard this section from all parent makefiles
+# Expected variables (with automatic defaults):
+#   CSRCS (all "C" files in the dir)
+#   SUBDIRS (all subdirs with a Makefile)
+#   GEN_LIBS - list of libs to be generated ()
+#   GEN_IMAGES - list of object file images to be generated ()
+#   GEN_BINS - list of binaries to be generated ()
+#   COMPONENTS_xxx - a list of libs/objs in the form
+#     subdir/lib to be extracted and rolled up into
+#     a generated lib/image xxx.a ()
+#
+TARGET = eagle
+#FLAVOR = release
+FLAVOR = debug
+
+EXTRA_CCFLAGS += -Wall -Werror
+
+ifndef PDIR # {
+GEN_IMAGES= eagle.app.v6.out
+GEN_BINS= eagle.app.v6.bin
+SPECIAL_MKTARGETS=$(APP_MKTARGETS)
+SUBDIRS=user
+
+endif # } PDIR
+
+LDDIR = $(SDK_PATH)/ld
+
+CCFLAGS += -Os
+
+TARGET_LDFLAGS =		\
+	-nostdlib		\
+	-Wl,-EL \
+	--longcalls \
+	--text-section-literals
+
+ifeq ($(FLAVOR),debug)
+    TARGET_LDFLAGS += -g -O2
+endif
+
+ifeq ($(FLAVOR),release)
+    TARGET_LDFLAGS += -g -O0
+endif
+
+COMPONENTS_eagle.app.v6 = \
+	user/libuser.a
+
+LINKFLAGS_eagle.app.v6 = \
+	-L$(SDK_PATH)/lib        \
+	-Wl,--gc-sections   \
+	-nostdlib	\
+    -T$(LD_FILE)   \
+	-Wl,--no-check-sections	\
+    -u call_user_start	\
+	-Wl,-static						\
+	-Wl,--start-group					\
+	-lcirom \
+	-lgcc					\
+	-lhal					\
+	-lphy	\
+	-lpp	\
+	-lnet80211	\
+	-lwpa	\
+	-lcrypto    \
+	-lmain	\
+	-lfreertos	\
+	-llwip	\
+	$(DEP_LIBS_eagle.app.v6)					\
+	-Wl,--end-group
+
+DEPENDS_eagle.app.v6 = \
+                $(LD_FILE) \
+                $(LDDIR)/eagle.rom.addr.v6.ld
+
+#############################################################
+# Configuration i.e. compile options etc.
+# Target specific stuff (defines etc.) goes in here!
+# Generally values applying to a tree are captured in the
+#   makefile at its root level - these are then overridden
+#   for a subtree within the makefile rooted therein
+#
+
+#UNIVERSAL_TARGET_DEFINES =		\
+
+# Other potential configuration flags include:
+#	-DTXRX_TXBUF_DEBUG
+#	-DTXRX_RXBUF_DEBUG
+#	-DWLAN_CONFIG_CCX
+CONFIGURATION_DEFINES =	-DICACHE_FLASH
+
+DEFINES +=				\
+	$(UNIVERSAL_TARGET_DEFINES)	\
+	$(CONFIGURATION_DEFINES)
+
+DDEFINES +=				\
+	$(UNIVERSAL_TARGET_DEFINES)	\
+	$(CONFIGURATION_DEFINES)
+
+
+#############################################################
+# Recursion Magic - Don't touch this!!
+#
+# Each subtree potentially has an include directory
+#   corresponding to the common APIs applicable to modules
+#   rooted at that subtree. Accordingly, the INCLUDE PATH
+#   of a module can only contain the include directories up
+#   its parent path, and not its siblings
+#
+# Required for each makefile to inherit from the parent
+#
+
+INCLUDES := $(INCLUDES) -I $(PDIR)include
+sinclude $(SDK_PATH)/Makefile
+
+.PHONY: FORCE
+FORCE:
+
@@ -0,0 +1,36 @@
+This is a Mongoose "Hello, world" that can be compiled under ESP8266 RTOS SDK.
+
+It sets up an AP (SSID `Mongoose`) and serves a "hello world" page on http://192.168.4.1/
+
+Most of the the boilerplate comes from [project_template](https://github.com/espressif/ESP8266_RTOS_SDK/tree/master/examples/project_template) (@ [3ca6af5](https://github.com/espressif/ESP8266_RTOS_SDK/tree/3ca6af5da68678d809b34c7cd98bee71e0235039/examples/project_template)) with minimal changes.
+
+To build with no changes to the SDK, you will need a module with 1MB (8Mb) flash or more.
+
+Compile (for NodeMCU 1.0):
+
+```
+$ export SDK_PATH=/path/to/ESP8266_RTOS_SDK
+$ export BIN_PATH=./bin
+$ make clean; make BOOT=new APP=1 SPI_SPEED=40 SPI_MODE=dio SPI_SIZE_MAP=6
+```
+
+Flash (using [esptool](https://github.com/themadinventor/esptool)):
+
+```
+$ esptool.py --port /dev/ttyUSB0 --baud 230400 \
+    write_flash --flash_mode=dio --flash_size=32m \
+    0x00000 ${SDK_PATH}/bin/boot_v1.4\(b1\).bin \
+    0x01000 ${BIN_PATH}/upgrade/user1.4096.new.6.bin
+```
+
+
+The output can be made to fit in 512KB (4Mb), but stock linker scripts do not reserve enough space for code.
+Custom linker script is provided for that, so you can use it for smaller devices like so (example that will work with ESP-01):
+
+```
+  $ make clean; make BOOT=none APP=0 SPI_SPEED=40 SPI_MODE=qio SPI_SIZE_MAP=0 LD_FILE=ld/eagle.app.v6.512.compact.ld
+  $ esptool.py --port /dev/ttyUSB0 --baud 230400 \
+      write_flash --flash_mode=qio --flash_size=4m \
+      0x00000 ${BIN_PATH}/eagle.flash.bin \
+      0x10000 ${BIN_PATH}/eagle.irom0text.bin
+```
@@ -0,0 +1,173 @@
+#!/bin/bash
+
+:<<!
+******NOTICE******
+MUST set SDK_PATH & BIN_PATH firstly!!!
+example:
+export SDK_PATH=~/ESP8266_RTOS_SDK
+export BIN_PATH=~/esp8266_bin
+!
+
+echo "gen_misc.sh version 20150911"
+echo ""
+
+if [ $SDK_PATH ]; then
+    echo "SDK_PATH:"
+    echo "$SDK_PATH"
+    echo ""
+else
+    echo "ERROR: Please export SDK_PATH in gen_misc.sh firstly, exit!!!"
+    exit
+fi
+
+if [ $BIN_PATH ]; then
+    echo "BIN_PATH:"
+    echo "$BIN_PATH"
+    echo ""
+else
+    echo "ERROR: Please export BIN_PATH in gen_misc.sh firstly, exit!!!"
+    exit
+fi
+
+echo "Please check SDK_PATH & BIN_PATH, enter (Y/y) to continue:"
+read input
+
+if [[ $input != Y ]] && [[ $input != y ]]; then
+    exit
+fi
+
+echo ""
+
+echo "Please follow below steps(1-5) to generate specific bin(s):"
+echo "STEP 1: use boot_v1.2+ by default"
+boot=new
+
+echo "boot mode: $boot"
+echo ""
+
+echo "STEP 2: choose bin generate(0=eagle.flash.bin+eagle.irom0text.bin, 1=user1.bin, 2=user2.bin)"
+echo "enter (0/1/2, default 0):"
+read input
+
+if [ -z "$input" ]; then
+    if [ $boot != none ]; then
+    	boot=none
+	echo "ignore boot"
+    fi
+    app=0
+    echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+elif [ $input == 1 ]; then
+    if [ $boot == none ]; then
+    	app=0
+	echo "choose no boot before"
+	echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+    else
+	app=1
+        echo "generate bin: user1.bin"
+    fi
+elif [ $input == 2 ]; then
+    if [ $boot == none ]; then
+    	app=0
+	echo "choose no boot before"
+	echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+    else
+    	app=2
+    	echo "generate bin: user2.bin"
+    fi
+else
+    if [ $boot != none ]; then
+    	boot=none
+	echo "ignore boot"
+    fi
+    app=0
+    echo "generate bin: eagle.flash.bin+eagle.irom0text.bin"
+fi
+
+echo ""
+
+echo "STEP 3: choose spi speed(0=20MHz, 1=26.7MHz, 2=40MHz, 3=80MHz)"
+echo "enter (0/1/2/3, default 2):"
+read input
+
+if [ -z "$input" ]; then
+    spi_speed=40
+elif [ $input == 0 ]; then
+    spi_speed=20
+elif [ $input == 1 ]; then
+    spi_speed=26.7
+elif [ $input == 3 ]; then
+    spi_speed=80
+else
+    spi_speed=40
+fi
+
+echo "spi speed: $spi_speed MHz"
+echo ""
+
+echo "STEP 4: choose spi mode(0=QIO, 1=QOUT, 2=DIO, 3=DOUT)"
+echo "enter (0/1/2/3, default 0):"
+read input
+
+if [ -z "$input" ]; then
+    spi_mode=QIO
+elif [ $input == 1 ]; then
+    spi_mode=QOUT
+elif [ $input == 2 ]; then
+    spi_mode=DIO
+elif [ $input == 3 ]; then
+    spi_mode=DOUT
+else
+    spi_mode=QIO
+fi
+
+echo "spi mode: $spi_mode"
+echo ""
+
+echo "STEP 5: choose spi size and map"
+echo "    0= 512KB( 256KB+ 256KB)"
+echo "    2=1024KB( 512KB+ 512KB)"
+echo "    3=2048KB( 512KB+ 512KB)"
+echo "    4=4096KB( 512KB+ 512KB)"
+echo "    5=2048KB(1024KB+1024KB)"
+echo "    6=4096KB(1024KB+1024KB)"
+echo "enter (0/2/3/4/5/6, default 0):"
+read input
+
+if [ -z "$input" ]; then
+    spi_size_map=0
+    echo "spi size: 512KB"
+    echo "spi ota map:  256KB + 256KB"
+elif [ $input == 2 ]; then
+    spi_size_map=2
+    echo "spi size: 1024KB"
+    echo "spi ota map:  512KB + 512KB"
+elif [ $input == 3 ]; then
+    spi_size_map=3
+    echo "spi size: 2048KB"
+    echo "spi ota map:  512KB + 512KB"
+elif [ $input == 4 ]; then
+    spi_size_map=4
+    echo "spi size: 4096KB"
+    echo "spi ota map:  512KB + 512KB"
+elif [ $input == 5 ]; then
+    spi_size_map=5
+    echo "spi size: 2048KB"
+    echo "spi ota map:  1024KB + 1024KB"
+elif [ $input == 6 ]; then
+    spi_size_map=6
+    echo "spi size: 4096KB"
+    echo "spi ota map:  1024KB + 1024KB"
+else
+    spi_size_map=0
+    echo "spi size: 512KB"
+    echo "spi ota map:  256KB + 256KB"
+fi
+
+echo ""
+
+echo "start..."
+echo ""
+
+make clean
+
+make BOOT=$boot APP=$app SPI_SPEED=$spi_speed SPI_MODE=$spi_mode SPI_SIZE_MAP=$spi_size_map
@@ -0,0 +1,20 @@
+/* eagle.flash.bin     @ 0x00000 */
+/* eagle.irom0text.bin @ 0x10000 */
+
+/*
+ * Flash map for 512KB flash.
+ *
+ * There is 0x8000 (32KB) available between 0x8000 and 0x10000.
+ *
+ * Note: IROM images starts at 0x10000 (ignore Makefile output which says 0x40000.
+ */
+
+MEMORY
+{
+  dport0_0_seg :                      	org = 0x3FF00000, len = 0x10
+  dram0_0_seg :                       	org = 0x3FFE8000, len = 0x18000
+  iram1_0_seg :                       	org = 0x40100000, len = 0x8000
+  irom0_0_seg :                       	org = 0x40210000, len = 0x6C000
+}
+
+INCLUDE "../ld/eagle.app.v6.common.ld"
@@ -0,0 +1,56 @@
+This is a simple project template.
+
+sample_lib is an example for multi-level folder Makefile, notice the folder structure and each Makefile, you can get the clue.
+
+
+HOWTO:
+1. Copy this folder to anywhere.
+Example:
+   Copy to ~/workspace/project_template
+   You can rename this folder as you like.
+
+2. Export SDK_PATH and BIN_PATH.
+Example:
+   Your SDK path is ~/esp_iot_rtos_sdk, and want generate bin at ~/esp8266_bin.
+   Do follow steps:
+     1>. export SDK_PATH=~/esp_iot_rtos_sdk
+     2>. export BIN_PATH=~/esp8266_bin
+   SDK and project are seperate, you can update SDK without change your project.
+
+3. Enter project_template folder, run ./gen_misc.sh, and follow the tips and steps.
+
+
+Compile Options:
+(1) COMPILE
+    Possible value: xcc
+    Default value:
+    If not set, use gcc by default.
+
+(2) BOOT
+    Possible value: none/old/new
+      none: no need boot
+      old: use boot_v1.1
+      new: use boot_v1.2
+    Default value: new
+
+(3) APP
+    Possible value: 0/1/2
+      0: original mode, generate eagle.app.v6.flash.bin and eagle.app.v6.irom0text.bin
+      1: generate user1
+      2: generate user2
+    Default value: 0
+
+(3) SPI_SPEED
+    Possible value: 20/26.7/40/80
+    Default value: 40
+
+(4) SPI_MODE
+    Possible value: QIO/QOUT/DIO/DOUT
+    Default value: QIO
+
+(4) SPI_SIZE_MAP
+    Possible value: 0/2/3/4/5/6
+    Default value: 0
+
+For example:
+    make COMPILE=gcc BOOT=new APP=1 SPI_SPEED=40 SPI_MODE=QIO SPI_SIZE_MAP=0
@@ -0,0 +1,47 @@
+
+#############################################################
+# Required variables for each makefile
+# Discard this section from all parent makefiles
+# Expected variables (with automatic defaults):
+#   CSRCS (all "C" files in the dir)
+#   SUBDIRS (all subdirs with a Makefile)
+#   GEN_LIBS - list of libs to be generated ()
+#   GEN_IMAGES - list of images to be generated ()
+#   COMPONENTS_xxx - a list of libs/objs in the form
+#     subdir/lib to be extracted and rolled up into
+#     a generated lib/image xxx.a ()
+#
+ifndef PDIR
+GEN_LIBS = libuser.a
+endif
+
+
+#############################################################
+# Configuration i.e. compile options etc.
+# Target specific stuff (defines etc.) goes in here!
+# Generally values applying to a tree are captured in the
+#   makefile at its root level - these are then overridden
+#   for a subtree within the makefile rooted therein
+#
+DEFINES += -DMG_DISABLE_DAV -DMG_DISABLE_SYNC_RESOLVER -DMG_DISABLE_CGI \
+           -DMG_DISABLE_SOCKETPAIR -DMG_DISABLE_DIRECTORY_LISTING \
+           -DMG_MAX_HTTP_HEADERS=20 -DMG_MAX_HTTP_REQUEST_SIZE=1024 \
+           -DMG_MAX_PATH=40 -DMG_MAX_HTTP_SEND_IOBUF=1024 \
+           -DMG_ESP8266 -DRTOS_SDK -DMG_LWIP
+
+#############################################################
+# Recursion Magic - Don't touch this!!
+#
+# Each subtree potentially has an include directory
+#   corresponding to the common APIs applicable to modules
+#   rooted at that subtree. Accordingly, the INCLUDE PATH
+#   of a module can only contain the include directories up
+#   its parent path, and not its siblings
+#
+# Required for each makefile to inherit from the parent
+#
+
+INCLUDES += -I ./
+PDIR := ../$(PDIR)
+sinclude $(PDIR)Makefile
+
@@ -0,0 +1,54 @@
+/*
+* Copyright (c) 2015 Cesanta Software Limited
+* All rights reserved
+*/
+
+#include <ctype.h>
+#include <sys/time.h>
+#include <stdint.h>
+
+#include <math.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "esp_common.h"
+
+/* Makes fprintf(stdout) and stderr work. */
+_ssize_t _write_r(struct _reent *r, int fd, void *buf, size_t len) {
+  if (fd == 1 || fd == 2) {
+    size_t i;
+    for (i = 0; i < len; i++) {
+      os_putc(((char *) buf)[i]);
+    }
+    return len;
+  }
+  return -1;
+}
+
+/*
+ * You'll need to implement _open_r and friends if you want file operations. See
+ * https://github.com/cesanta/smart.js/blob/master/platforms/esp8266/user/esp_fs.c
+ * for SPIFFS-based implementation.
+ */
+
+void abort(void) __attribute__((no_instrument_function));
+void abort(void) {
+  /* cause an unaligned access exception, that will drop you into gdb */
+  *(int *) 1 = 1;
+  while (1)
+    ; /* avoid gcc warning because stdlib abort() has noreturn attribute */
+}
+
+void _exit(int status) {
+  printf("_exit(%d)\n", status);
+  abort();
+}
+
+int _gettimeofday_r(struct _reent *r, struct timeval *tp, void *tzp) {
+  uint32_t time = system_get_time();
+  tp->tv_sec = time / 1000000;
+  tp->tv_usec = time % 1000000;
+  return 0;
+}
@@ -0,0 +1 @@
+../../../mongoose.c
@@ -0,0 +1 @@
+../../../mongoose.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ */
+
+#include "esp_common.h"
+
+#include "mongoose.h"
+
+#define AP_SSID "Mongoose"
+#define AP_PASS "Mongoose"
+#define AP_CHAN 9
+#define MG_LISTEN_ADDR "80"
+
+#define MG_TASK_STACK_SIZE 2048
+#define MG_TASK_PRIORITY 1
+
+void uart_div_modify(int uart_no, unsigned int freq);
+
+void ev_handler(struct mg_connection *nc, int ev, void *p) {
+  static const char *reply_fmt =
+      "HTTP/1.0 200 OK\r\n"
+      "Connection: close\r\n"
+      "Content-Type: text/plain\r\n"
+      "\r\n"
+      "Hello %s\n";
+  LOG(LL_DEBUG, ("conn %p ev %d", nc, ev));
+
+  switch (ev) {
+    case MG_EV_ACCEPT: {
+      char addr[32];
+      mg_sock_addr_to_str(&nc->sa, addr, sizeof(addr),
+                          MG_SOCK_STRINGIFY_IP | MG_SOCK_STRINGIFY_PORT);
+      LOG(LL_INFO, ("Connection %p from %s", nc, addr));
+      break;
+    }
+    case MG_EV_HTTP_REQUEST: {
+      char addr[32];
+      struct http_message *hm = (struct http_message *) p;
+      mg_sock_addr_to_str(&nc->sa, addr, sizeof(addr),
+                          MG_SOCK_STRINGIFY_IP | MG_SOCK_STRINGIFY_PORT);
+      LOG(LL_INFO,
+          ("HTTP request from %s: %.*s %.*s", addr, (int) hm->method.len,
+           hm->method.p, (int) hm->uri.len, hm->uri.p));
+      mg_printf(nc, reply_fmt, addr);
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      break;
+    }
+    case MG_EV_CLOSE: {
+      LOG(LL_INFO, ("Connection %p closed", nc));
+      break;
+    }
+  }
+}
+
+void setup_ap() {
+  struct softap_config cfg;
+
+  wifi_set_opmode_current(SOFTAP_MODE);
+  memset(&cfg, 0, sizeof(cfg));
+  strcpy((char *) cfg.ssid, AP_SSID);
+  strcpy((char *) cfg.password, AP_PASS);
+  cfg.ssid_len = strlen((const char *) cfg.ssid);
+  cfg.authmode =
+      strlen((const char *) cfg.password) ? AUTH_WPA2_PSK : AUTH_OPEN;
+  cfg.channel = AP_CHAN;
+  cfg.ssid_hidden = 0;
+  cfg.max_connection = 10;
+  cfg.beacon_interval = 100; /* ms */
+
+  LOG(LL_INFO, ("Setting up AP '%s' on channel %d", cfg.ssid, cfg.channel));
+  wifi_softap_set_config_current(&cfg);
+}
+
+static void mg_task(void *arg) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  cs_log_set_level(LL_INFO);
+
+  LOG(LL_INFO, ("SDK version: %s", system_get_sdk_version()));
+  setup_ap();
+
+  mg_mgr_init(&mgr, NULL);
+
+  nc = mg_bind(&mgr, MG_LISTEN_ADDR, ev_handler);
+  if (nc == NULL) {
+    LOG(LL_ERROR, ("Error setting up listener!"));
+    return;
+  }
+  mg_set_protocol_http_websocket(nc);
+
+  while (1) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+}
+
+xTaskHandle s_mg_task_handle;
+
+void user_init(void) {
+  uart_div_modify(0, UART_CLK_FREQ / 115200);
+
+  setvbuf(stdout, NULL, _IONBF, 0);
+  setvbuf(stderr, NULL, _IONBF, 0);
+
+  xTaskCreate(mg_task, (const signed char *) "mongoose", MG_TASK_STACK_SIZE,
+              NULL, MG_TASK_PRIORITY, &s_mg_task_handle);
+}
@@ -1,28 +1,15 @@
-CFLAGS=	-W -Wall -I.. -pthread -g
+# Copyright (c) 2014 Cesanta Software
+# All rights reserved

-all:
-	OS=`uname`; \
-	  test "$$OS" = Linux && LIBS="-ldl" ; \
-	  $(CC) $(CFLAGS) hello.c ../mongoose.c  $$LIBS $(ADD) -o hello;
-	  $(CC) $(CFLAGS) upload.c ../mongoose.c  $$LIBS $(ADD) -o upload;
-	  $(CC) $(CFLAGS) post.c ../mongoose.c  $$LIBS $(ADD) -o post;
-	  $(CC) $(CFLAGS) -DUSE_WEBSOCKET websocket.c ../mongoose.c  $$LIBS $(ADD) -o websocket;
-	  $(CC) $(CFLAGS) chat.c ../mongoose.c  $$LIBS $(ADD) -o chat
+SUBDIRS = $(sort $(dir $(wildcard */)))
+X = $(SUBDIRS)

+.PHONY: $(SUBDIRS)

-MSVC    = e:/vc6
-CL      = $(MSVC)/bin/cl
-CLFLAGS = /MD /TC /nologo $(DBG) /W3 /DNO_SSL \
-        /I$(MSVC)/include /I.. /Dsnprintf=_snprintf \
-        /link /incremental:no /libpath:$(MSVC)/lib /machine:IX86
+all: $(SUBDIRS)

-windows:
-	$(CL) upload.c ../mongoose.c $(CLFLAGS)
-	$(CL) hello.c ../mongoose.c $(CLFLAGS)
-	$(CL) upload.c ../mongoose.c $(CLFLAGS)
-	$(CL) post.c ../mongoose.c $(CLFLAGS)
-	$(CL) post.c ../mongoose.c $(CLFLAGS)
-	$(CL) /DUSE_WEBSOCKET websocket.c ../mongoose.c $(CLFLAGS)
+$(SUBDIRS):
+	@$(MAKE) -C $@

 clean:
-	rm -rf hello hello.exe upload upload.exe post post.exe websocket websocket.exe chat chat.exe *.dSYM *.obj
+	for d in $(SUBDIRS) ; do $(MAKE) -C $$d clean ; done
@@ -0,0 +1,25 @@
+PROG = api_server
+SOURCES = $(PROG).c sqlite3.c db_plugin_sqlite.c ../../mongoose.c
+CFLAGS = -W -Wall -pthread $(CFLAGS_EXTRA)
+
+ifeq ($(OS), Windows_NT)
+else
+  UNAME_S := $(shell uname -s)
+  ifeq ($(UNAME_S), Linux)
+    CFLAGS += -ldl -lm
+  endif
+endif
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I.. /MD /Fe$@
+
+test: $(PROG)
+	sh unit_test.sh $$(pwd)/$(PROG)
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)
@@ -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;
+}
@@ -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 */
@@ -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;
+  }
+}
+
@@ -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
@@ -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>
@@ -0,0 +1,2 @@
+# This "makefile" is only intended to prevent errors during main makefile execution
+all:
@@ -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)
@@ -0,0 +1,141 @@
+
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ * 
+ * Build and run instructions:
+ * To run with Arduino Ethernet (W5100) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add file...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Buils and run in console /Users/alex/Projects/mongoose/examples/restful_server example
+ *  3. Make board_ip and board_mac variables suitable for your network and board
+ *  4. Uncomment line #include <Ethernet.h>
+ *  5. Change IP address in s_target_address variable to IP address of host running restful_server
+ *  6. Compile & flash sketch
+ *  7. restful_server server will start to show current uptime and free memory size (with 5 second interval) 
+ *
+ * To run with Adafruit WiFi (CC3000) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add files...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Import Adafruit CC3000 library for mongoose (select Sketch->Import Library...->Add library... and point 
+ *     /mongoose/platforms/arduino_wifi_CC3000/adafruit_CC3000_lib_mongoose folder
+ *  3. Buils and run in console /Users/alex/Projects/mongoose/examples/restful_server example
+ *  4. Make the following variables suitable for your network
+ *     - board_ip
+ *     - subnet_mask
+ *     - gateway
+ *     - dns 
+ *     - wlan_ssid
+ *     - wlan_pwd
+ *     - wlan_security
+ *  5. Uncomment line #include <Adafruit_CC3000.h>
+ *  6. Compile & flash sketch
+ *  7. restful_server server will start to show current uptime and free memory size (with 5 second interval) *
+ *
+ */
+
+ 
+//#include <Ethernet.h>
+//#include <Adafruit_CC3000.h>
+#include <SPI.h>
+#include "mongoose.h"
+
+// CHANGE THESE VARIABLES
+// NB: Devices with the same address must not end up on the same network.
+// Use MAC address provided by device manufacturer (e.g. on a sticker).
+// If there isn't one, use a random one from the locally administered range.
+// See http://en.wikipedia.org/wiki/MAC_address for details.
+static uint8_t board_mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+static uint8_t board_ip[] = {192, 168, 10, 177};
+
+#ifdef WIFI_CC3000
+static uint8_t subnet_mask[] = {255, 255, 255, 0};
+static uint8_t gateway[] = {192, 168, 10, 254};
+static uint8_t dns_ip[] = {192, 168, 10, 254};
+
+static const char *wlan_ssid = "mynetwork";     
+static const char *wlan_pwd = "mypassword";
+static int wlan_security = WLAN_SEC_WPA2;
+#endif
+
+static const char *s_target_address = "192.168.10.3:8000";
+
+/////////////////////////////////////////////
+
+static const char *s_request = "/printcontent";
+
+static uint32_t IP2U32(uint8_t* iparr) {
+  return ((uint32_t)iparr[0] << 24) | ((uint32_t)iparr[1] << 16) | (iparr[2] << 8) | (iparr[3]);
+}
+
+static int get_data_to_send(char* buf, int buf_size) {
+  // Adding data to send
+  // It could be any sensor data, now just put uptime & free memory size here
+  return snprintf(buf, buf_size, "Uptime: %lus Free memory: %db",
+                  millis()/1000, get_freememsize());
+}
+static void rfc_ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  int connect_status;
+
+  switch (ev) {
+    case NS_CONNECT:
+      connect_status = * (int *) ev_data;
+
+      if (connect_status == 0) {
+        char buf[100];
+        int len = get_data_to_send(buf, sizeof(buf));
+        mg_printf(nc, "POST %s HTTP/1.0\r\nHost: %s\r\nContent-Lenght: %d"
+                  "\r\n\r\n%s", s_request, s_target_address, len, buf);
+        nc->flags |= MG_F_SEND_AND_CLOSE;
+      } else {
+        nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+      }
+      break;
+    default:
+      break;
+  }
+}
+
+static struct mg_mgr mgr;
+static struct mg_connection *nc;
+
+void setup()
+{
+  Serial.begin(9600);
+  Serial.println("Initialization...");
+#if defined(ETHERNET_W5100)
+  avr_netinit(board_mac, board_ip);
+#elif defined(WIFI_CC3000)
+  if (avr_netinit(wlan_ssid, wlan_pwd, wlan_security, IP2U32(board_ip), 
+              IP2U32(subnet_mask), IP2U32(gateway), IP2U32(dns_ip)) != 0) {
+    Serial.println("Initialization error, check network settings");
+    return;
+  };
+#endif
+
+  mg_mgr_init(&mgr, NULL);
+  Serial.println("Initialization done");  
+}
+
+void loop() {
+  nc = mg_connect(&mgr, s_target_address, rfc_ev_handler);
+  if (nc != NULL) {
+    mg_set_protocol_http_websocket(nc);
+  }
+
+  uint32_t time_to_finish = millis() + 5000;
+  while (millis() < time_to_finish) {
+    mg_mgr_poll(&mgr, 1000);  
+  }
+}
+
@@ -0,0 +1,2 @@
+# This "makefile" is only intended to prevent errors during main makefile execution
+all:
@@ -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.
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2015 Cesanta Software Limited
+ * All rights reserved
+ * 
+ * Build and run instructions:
+ * To run with Arduino Ethernet (W5100) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add file...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Make board_ip and board_mac variables suitable for your network and board
+ *  3. Uncomment line #include <Ethernet.h>
+ *  4. Compile & flash sketch
+ *  5. Run curl http://<board_ip/blink
+ *     LED attached to PIN 13 will blink and board free memory size and uptime will responsed
+ *
+ * To run with Adafruit WiFi (CC3000) shield:
+ * -----------------------------------------------------------
+ *  1. Add (Sketch->Add files...) the following files to sketch:
+ *     - /mongoose/mongoose.h
+ *     - /mongoose/mongoose.c
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.h
+ *     - /mongoose/platforms/arduino_ethernet_W5100/avrsupport.cpp
+ *  2. Import Adafruit CC3000 library for mongoose (select Sketch->Import Library...->Add library... and point 
+ *     /mongoose/platforms/arduino_wifi_CC3000/adafruit_CC3000_lib_mongoose folder
+ *  3. Make the following variables suitable for your network
+ *     - board_ip
+ *     - subnet_mask
+ *     - gateway
+ *     - dns 
+ *     - wlan_ssid
+ *     - wlan_pwd
+ *     - wlan_security
+ *  5. Uncomment line #include <Adafruit_CC3000.h>
+ *  4. Compile & flash sketch
+ *  5. Run curl http://<board_ip/blink
+ *     LED attached to PIN 13 will blink and board free memory size and uptime will responsed
+ *
+ */
+
+//#include <Ethernet.h>
+//#include <Adafruit_CC3000.h>
+#include <SPI.h>
+#include "mongoose.h"
+
+// CHANGE THESE VARIABLES
+// NB: Devices with the same address must not end up on the same network.
+// Use MAC address provided by device manufacturer (e.g. on a sticker).
+// If there isn't one, use a random one from the locally administered range.
+// See http://en.wikipedia.org/wiki/MAC_address for details.
+static uint8_t board_mac[] = {
+  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
+};
+
+static uint8_t board_ip[] = {192, 168, 10, 8};
+
+#ifdef WIFI_CC3000
+static uint8_t subnet_mask[] = {255, 255, 255, 0};
+static uint8_t gateway[] = {192, 168, 10, 254};
+static uint8_t dns_ip[] = {192, 168, 10, 254};
+
+static const char *wlan_ssid = "mynetwork";     
+static const char *wlan_pwd = "mypassword";
+static int wlan_security = WLAN_SEC_WPA2;
+#endif
+
+///////////////////////////////////////////////
+
+static const char *s_http_port = "60000";
+
+static uint32_t IP2U32(uint8_t* iparr) {
+  return ((uint32_t)iparr[0] << 24) | ((uint32_t)iparr[1] << 16) | (iparr[2] << 8) | (iparr[3]);
+}
+
+static void rfs_ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+  char buf[100];
+  int clen;
+
+  switch (ev) {
+    case NS_HTTP_REQUEST:      
+      if (mg_vcmp(&hm->uri, "/blink") == 0) {
+        blink(1, 500);
+      }
+
+      clen = snprintf(buf, sizeof(buf),
+                      "Free memory size: %d Uptime: %d",
+                      (int)get_freememsize(), (int)time(NULL));
+
+      mg_printf_http_chunk(nc, "HTTP/1.1 200 OK\r\n"
+                               "Content-Length: %d\r\n"
+                               "Transfer-Encoding: chunked\r\n\r\n"
+                               "%s",
+                               clen, buf);
+
+      mg_send_http_chunk(nc, "", 0);
+      break;
+    case NS_SEND:
+      nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+      break;
+      
+    default:
+      break;
+  }
+}
+
+static struct mg_connection *nc;
+static struct mg_mgr mgr;
+
+void setup() {
+  Serial.begin(9600);
+  Serial.println("Initialization...");
+#if defined(ETHERNET_W5100)
+  avr_netinit(board_mac, board_ip);
+#elif defined(WIFI_CC3000)
+  if (avr_netinit(wlan_ssid, wlan_pwd, wlan_security, IP2U32(board_ip), 
+              IP2U32(subnet_mask), IP2U32(gateway), IP2U32(dns_ip)) != 0) {
+    Serial.println("Initialization error, check network settings");
+    return;
+  };
+#endif
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, rfs_ev_handler);
+  mg_set_protocol_http_websocket(nc);
+  Serial.println("Initialization done");
+}
+
+void loop() {
+  mg_mgr_poll(&mgr, 1000);
+}
@@ -0,0 +1,2 @@
+PROG = big_upload
+include ../examples.mk
@@ -0,0 +1,153 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+//
+// This example demonstrates how to handle very large requests without keeping
+// them in memory.
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "mongoose.h"
+
+static const char *s_http_port = "8000";
+
+struct file_writer_data {
+  FILE *fp;
+  size_t bytes_left;
+};
+
+static void handle_request(struct mg_connection *nc) {
+  // This handler gets called only when we don't reset proto_handler in
+  // handle_recv, so we just return a page unconditionally.
+  mg_printf(nc, "%s",
+            "HTTP/1.1 200 OK\r\n"
+            "Content-Type: text/html\r\n"
+            "Connection: close\r\n"
+            "\r\n"
+            "<html><body>Upload example."
+            "<form method=\"POST\" action=\"/upload\" "
+            "  enctype=\"multipart/form-data\">"
+            "<input type=\"file\" name=\"file\" /> <br/>"
+            "<input type=\"submit\" value=\"Upload\" />"
+            "</form></body></html>");
+  nc->flags |= MG_F_SEND_AND_CLOSE;
+}
+
+static void handle_recv(struct mg_connection *nc) {
+  struct file_writer_data *data = (struct file_writer_data *) nc->user_data;
+
+  if (data == NULL) {
+    // This is a new connection, try to parse HTTP request.
+    struct http_message hm;
+    int req_len = mg_parse_http(nc->recv_mbuf.buf, nc->recv_mbuf.len, &hm,
+                                1 /* is_req */);
+
+    if (req_len < 0 ||
+        (req_len == 0 && nc->recv_mbuf.len >= MG_MAX_HTTP_REQUEST_SIZE)) {
+      nc->flags |= MG_F_CLOSE_IMMEDIATELY;
+    } else if (req_len == 0) {
+      // Request is not complete yet, do nothing.
+    } else if (mg_vcasecmp(&hm.method, "POST") == 0 &&
+               mg_vcmp(&hm.uri, "/upload") == 0) {
+      // This is the request that we don't want to buffer in memory.
+
+      if (hm.body.len == (size_t) ~0 || hm.body.len == 0) {
+        mg_printf(nc, "%s",
+                  "HTTP/1.1 411 Content-Length required\r\n"
+                  "Content-Length: 0\r\n\r\n");
+        nc->flags |= MG_F_SEND_AND_CLOSE;
+        return;
+      }
+
+      // Reset proto_handler so Mongoose's http_handler() won't get confused
+      // once we start removing data from the buffer.
+      nc->proto_handler = NULL;
+
+      // Headers will be inaccessible later, so put everything we need into
+      // user_data.
+      data = calloc(1, sizeof(struct file_writer_data));
+      data->bytes_left = hm.body.len;
+      data->fp = tmpfile();
+      if (data->fp == NULL) {
+        mg_printf(nc, "%s",
+                  "HTTP/1.1 500 Failed to open a file\r\n"
+                  "Content-Length: 0\r\n\r\n");
+        nc->flags |= MG_F_SEND_AND_CLOSE;
+        return;
+      }
+      nc->user_data = (void *) data;
+
+      // Remove the headers from the buffer.
+      mbuf_remove(&nc->recv_mbuf, hm.body.p - nc->recv_mbuf.buf);
+
+      // Invoke itself again to write the piece of the body that is already in
+      // the buffer.
+      handle_recv(nc);
+    }
+  } else {  // data != NULL
+    size_t to_write = data->bytes_left, written = 0;
+    if (nc->recv_mbuf.len < to_write) to_write = nc->recv_mbuf.len;
+    written = fwrite(nc->recv_mbuf.buf, 1, to_write, data->fp);
+    mbuf_remove(&nc->recv_mbuf, written);
+    data->bytes_left -= written;
+    if (data->bytes_left <= 0) {
+      // Request is complete, do something meaningful here.
+
+      mg_printf(nc,
+                "HTTP/1.1 200 OK\r\n"
+                "Content-Type: text/plain\r\n"
+                "Connection: close\r\n\r\n"
+                "Written %ld of POST data to a temp file\n\n",
+                (long) ftell(data->fp));
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      // handle_close will free the resources.
+    }
+  }
+}
+
+// Make sure we free all allocated resources
+static void handle_close(struct mg_connection *nc) {
+  struct file_writer_data *data = (struct file_writer_data *) nc->user_data;
+
+  if (data != NULL) {
+    fclose(data->fp);
+    free(data);
+    nc->user_data = NULL;
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  (void) ev_data;
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      // Invoked when the full HTTP request is in the buffer (including body).
+      handle_request(nc);
+      break;
+    case MG_EV_RECV:
+      // Invoked every time new data arrives.
+      handle_recv(nc);
+      break;
+    case MG_EV_CLOSE:
+      handle_close(nc);
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}
@@ -0,0 +1,4 @@
+PROG = captive_dns_server
+MODULE_CFLAGS=-DMG_ENABLE_DNS_SERVER
+
+include ../rules.mk
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2014 Cesanta Software Limited
+ * All rights reserved
+ */
+
+/*
+ * Try it out with:
+ * $ dig -t A www.google.com -4 @localhost -p 5533
+ */
+
+#include "../../mongoose.h"
+
+#include <stdio.h>
+
+static int s_exit_flag = 0;
+static in_addr_t s_our_ip_addr;
+static const char *s_listening_addr = "udp://:5533";
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct mg_dns_message *msg;
+  struct mg_dns_resource_record *rr;
+  struct mg_dns_reply reply;
+  int i;
+
+  switch (ev) {
+    case MG_DNS_MESSAGE:
+      msg = (struct mg_dns_message *) ev_data;
+      reply = mg_dns_create_reply(&nc->send_mbuf, msg);
+
+      for (i = 0; i < msg->num_questions; i++) {
+        rr = &msg->questions[i];
+        if (rr->rtype == MG_DNS_A_RECORD) {
+          mg_dns_reply_record(&reply, rr, NULL, rr->rtype, 3600,
+                              &s_our_ip_addr, 4);
+        }
+      }
+
+      /*
+       * We don't set the error flag even if there were no answers
+       * maching the MG_DNS_A_RECORD query type.
+       * This indicates that we have (syntetic) answers for MG_DNS_A_RECORD.
+       * See http://goo.gl/QWvufr for a distinction between NXDOMAIN and NODATA.
+       */
+
+      mg_dns_send_reply(nc, &reply);
+      nc->flags |= MG_F_SEND_AND_CLOSE;
+      break;
+  }
+}
+
+int main(int argc, char *argv[]) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  int i;
+
+  mg_mgr_init(&mgr, NULL);
+  s_our_ip_addr = inet_addr("127.0.0.1");
+
+  /* Parse command line arguments */
+  for (i = 1; i < argc; i++) {
+    if (strcmp(argv[i], "-D") == 0) {
+      mgr.hexdump_file = argv[++i];
+    } else if (strcmp(argv[i], "-l") == 0 && i + 1 < argc) {
+      s_listening_addr = argv[++i];
+    } else {
+      s_our_ip_addr = inet_addr(argv[i]);
+    }
+  }
+
+  fprintf(stderr, "Listening on '%s'\n", s_listening_addr);
+  if ((nc = mg_bind(&mgr, s_listening_addr, ev_handler)) == NULL) {
+    fprintf(stderr, "cannot bind to socket\n");
+    exit(1);
+  }
+  mg_set_protocol_dns(nc);
+
+  while (s_exit_flag == 0) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}
@@ -1,390 +0,0 @@
-// This file is part of the Mongoose project, http://code.google.com/p/mongoose
-// It implements an online chat server. For more details,
-// see the documentation on the project web site.
-// To test the application,
-// 1. type "make" in the directory where this file lives
-// 2. point your browser to http://127.0.0.1:8081
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <assert.h>
-#include <string.h>
-#include <time.h>
-#include <stdarg.h>
-#include <pthread.h>
-
-#include "mongoose.h"
-
-#define MAX_USER_LEN  20
-#define MAX_MESSAGE_LEN  100
-#define MAX_MESSAGES 5
-#define MAX_SESSIONS 2
-#define SESSION_TTL 120
-
-static const char *authorize_url = "/authorize";
-static const char *login_url = "/login.html";
-static const char *ajax_reply_start =
-  "HTTP/1.1 200 OK\r\n"
-  "Cache: no-cache\r\n"
-  "Content-Type: application/x-javascript\r\n"
-  "\r\n";
-
-// Describes single message sent to a chat. If user is empty (0 length),
-// the message is then originated from the server itself.
-struct message {
-  long id;                     // Message ID
-  char user[MAX_USER_LEN];     // User that have sent the message
-  char text[MAX_MESSAGE_LEN];  // Message text
-  time_t timestamp;            // Message timestamp, UTC
-};
-
-// Describes web session.
-struct session {
-  char session_id[33];      // Session ID, must be unique
-  char random[20];          // Random data used for extra user validation
-  char user[MAX_USER_LEN];  // Authenticated user
-  time_t expire;            // Expiration timestamp, UTC
-};
-
-static struct message messages[MAX_MESSAGES];  // Ringbuffer for messages
-static struct session sessions[MAX_SESSIONS];  // Current sessions
-static long last_message_id;
-
-// Protects messages, sessions, last_message_id
-static pthread_rwlock_t rwlock = PTHREAD_RWLOCK_INITIALIZER;
-
-// Get session object for the connection. Caller must hold the lock.
-static struct session *get_session(const struct mg_connection *conn) {
-  int i;
-  char session_id[33];
-  time_t now = time(NULL);
-  mg_get_cookie(conn, "session", session_id, sizeof(session_id));
-  for (i = 0; i < MAX_SESSIONS; i++) {
-    if (sessions[i].expire != 0 &&
-        sessions[i].expire > now &&
-        strcmp(sessions[i].session_id, session_id) == 0) {
-      break;
-    }
-  }
-  return i == MAX_SESSIONS ? NULL : &sessions[i];
-}
-
-static void get_qsvar(const struct mg_request_info *request_info,
-                      const char *name, char *dst, size_t dst_len) {
-  const char *qs = request_info->query_string;
-  mg_get_var(qs, strlen(qs == NULL ? "" : qs), name, dst, dst_len);
-}
-
-// Get a get of messages with IDs greater than last_id and transform them
-// into a JSON string. Return that string to the caller. The string is
-// dynamically allocated, caller must free it. If there are no messages,
-// NULL is returned.
-static char *messages_to_json(long last_id) {
-  const struct message *message;
-  int max_msgs, len;
-  char buf[sizeof(messages)];  // Large enough to hold all messages
-
-  // Read-lock the ringbuffer. Loop over all messages, making a JSON string.
-  pthread_rwlock_rdlock(&rwlock);
-  len = 0;
-  max_msgs = sizeof(messages) / sizeof(messages[0]);
-  // If client is too far behind, return all messages.
-  if (last_message_id - last_id > max_msgs) {
-    last_id = last_message_id - max_msgs;
-  }
-  for (; last_id < last_message_id; last_id++) {
-    message = &messages[last_id % max_msgs];
-    if (message->timestamp == 0) {
-      break;
-    }
-    // buf is allocated on stack and hopefully is large enough to hold all
-    // messages (it may be too small if the ringbuffer is full and all
-    // messages are large. in this case asserts will trigger).
-    len += snprintf(buf + len, sizeof(buf) - len,
-        "{user: '%s', text: '%s', timestamp: %lu, id: %lu},",
-        message->user, message->text, message->timestamp, message->id);
-    assert(len > 0);
-    assert((size_t) len < sizeof(buf));
-  }
-  pthread_rwlock_unlock(&rwlock);
-
-  return len == 0 ? NULL : strdup(buf);
-}
-
-// If "callback" param is present in query string, this is JSONP call.
-// Return 1 in this case, or 0 if "callback" is not specified.
-// Wrap an output in Javascript function call.
-static int handle_jsonp(struct mg_connection *conn,
-                        const struct mg_request_info *request_info) {
-  char cb[64];
-
-  get_qsvar(request_info, "callback", cb, sizeof(cb));
-  if (cb[0] != '\0') {
-    mg_printf(conn, "%s(", cb);
-  }
-
-  return cb[0] == '\0' ? 0 : 1;
-}
-
-// A handler for the /ajax/get_messages endpoint.
-// Return a list of messages with ID greater than requested.
-static void ajax_get_messages(struct mg_connection *conn,
-                              const struct mg_request_info *request_info) {
-  char last_id[32], *json;
-  int is_jsonp;
-
-  mg_printf(conn, "%s", ajax_reply_start);
-  is_jsonp = handle_jsonp(conn, request_info);
-
-  get_qsvar(request_info, "last_id", last_id, sizeof(last_id));
-  if ((json = messages_to_json(strtoul(last_id, NULL, 10))) != NULL) {
-    mg_printf(conn, "[%s]", json);
-    free(json);
-  }
-
-  if (is_jsonp) {
-    mg_printf(conn, "%s", ")");
-  }
-}
-
-// Allocate new message. Caller must hold the lock.
-static struct message *new_message(void) {
-  static int size = sizeof(messages) / sizeof(messages[0]);
-  struct message *message = &messages[last_message_id % size];
-  message->id = last_message_id++;
-  message->timestamp = time(0);
-  return message;
-}
-
-static void my_strlcpy(char *dst, const char *src, size_t len) {
-  strncpy(dst, src, len);
-  dst[len - 1] = '\0';
-}
-
-// A handler for the /ajax/send_message endpoint.
-static void ajax_send_message(struct mg_connection *conn,
-                              const struct mg_request_info *request_info) {
-  struct message *message;
-  struct session *session;
-  char text[sizeof(message->text) - 1];
-  int is_jsonp;
-
-  mg_printf(conn, "%s", ajax_reply_start);
-  is_jsonp = handle_jsonp(conn, request_info);
-
-  get_qsvar(request_info, "text", text, sizeof(text));
-  if (text[0] != '\0') {
-    // We have a message to store. Write-lock the ringbuffer,
-    // grab the next message and copy data into it.
-    pthread_rwlock_wrlock(&rwlock);
-    message = new_message();
-    // TODO(lsm): JSON-encode all text strings
-    session = get_session(conn);
-    assert(session != NULL);
-    my_strlcpy(message->text, text, sizeof(text));
-    my_strlcpy(message->user, session->user, sizeof(message->user));
-    pthread_rwlock_unlock(&rwlock);
-  }
-
-  mg_printf(conn, "%s", text[0] == '\0' ? "false" : "true");
-
-  if (is_jsonp) {
-    mg_printf(conn, "%s", ")");
-  }
-}
-
-// Redirect user to the login form. In the cookie, store the original URL
-// we came from, so that after the authorization we could redirect back.
-static void redirect_to_login(struct mg_connection *conn,
-                              const struct mg_request_info *request_info) {
-  mg_printf(conn, "HTTP/1.1 302 Found\r\n"
-      "Set-Cookie: original_url=%s\r\n"
-      "Location: %s\r\n\r\n",
-      request_info->uri, login_url);
-}
-
-// Return 1 if username/password is allowed, 0 otherwise.
-static int check_password(const char *user, const char *password) {
-  // In production environment we should ask an authentication system
-  // to authenticate the user.
-  // Here however we do trivial check that user and password are not empty
-  return (user[0] && password[0]);
-}
-
-// Allocate new session object
-static struct session *new_session(void) {
-  int i;
-  time_t now = time(NULL);
-  pthread_rwlock_wrlock(&rwlock);
-  for (i = 0; i < MAX_SESSIONS; i++) {
-    if (sessions[i].expire == 0 || sessions[i].expire < now) {
-      sessions[i].expire = time(0) + SESSION_TTL;
-      break;
-    }
-  }
-  pthread_rwlock_unlock(&rwlock);
-  return i == MAX_SESSIONS ? NULL : &sessions[i];
-}
-
-// Generate session ID. buf must be 33 bytes in size.
-// Note that it is easy to steal session cookies by sniffing traffic.
-// This is why all communication must be SSL-ed.
-static void generate_session_id(char *buf, const char *random,
-                                const char *user) {
-  mg_md5(buf, random, user, NULL);
-}
-
-static void send_server_message(const char *fmt, ...) {
-  va_list ap;
-  struct message *message;
-
-  pthread_rwlock_wrlock(&rwlock);
-  message = new_message();
-  message->user[0] = '\0';  // Empty user indicates server message
-  va_start(ap, fmt);
-  vsnprintf(message->text, sizeof(message->text), fmt, ap);
-  va_end(ap);
-
-  pthread_rwlock_unlock(&rwlock);
-}
-
-// A handler for the /authorize endpoint.
-// Login page form sends user name and password to this endpoint.
-static void authorize(struct mg_connection *conn,
-                      const struct mg_request_info *request_info) {
-  char user[MAX_USER_LEN], password[MAX_USER_LEN];
-  struct session *session;
-
-  // Fetch user name and password.
-  get_qsvar(request_info, "user", user, sizeof(user));
-  get_qsvar(request_info, "password", password, sizeof(password));
-
-  if (check_password(user, password) && (session = new_session()) != NULL) {
-    // Authentication success:
-    //   1. create new session
-    //   2. set session ID token in the cookie
-    //   3. remove original_url from the cookie - not needed anymore
-    //   4. redirect client back to the original URL
-    //
-    // The most secure way is to stay HTTPS all the time. However, just to
-    // show the technique, we redirect to HTTP after the successful
-    // authentication. The danger of doing this is that session cookie can
-    // be stolen and an attacker may impersonate the user.
-    // Secure application must use HTTPS all the time.
-    my_strlcpy(session->user, user, sizeof(session->user));
-    snprintf(session->random, sizeof(session->random), "%d", rand());
-    generate_session_id(session->session_id, session->random, session->user);
-    send_server_message("<%s> joined", session->user);
-    mg_printf(conn, "HTTP/1.1 302 Found\r\n"
-        "Set-Cookie: session=%s; max-age=3600; http-only\r\n"  // Session ID
-        "Set-Cookie: user=%s\r\n"  // Set user, needed by Javascript code
-        "Set-Cookie: original_url=/; max-age=0\r\n"  // Delete original_url
-        "Location: /\r\n\r\n",
-        session->session_id, session->user);
-  } else {
-    // Authentication failure, redirect to login.
-    redirect_to_login(conn, request_info);
-  }
-}
-
-// Return 1 if request is authorized, 0 otherwise.
-static int is_authorized(const struct mg_connection *conn,
-                         const struct mg_request_info *request_info) {
-  struct session *session;
-  char valid_id[33];
-  int authorized = 0;
-
-  // Always authorize accesses to login page and to authorize URI
-  if (!strcmp(request_info->uri, login_url) ||
-      !strcmp(request_info->uri, authorize_url)) {
-    return 1;
-  }
-
-  pthread_rwlock_rdlock(&rwlock);
-  if ((session = get_session(conn)) != NULL) {
-    generate_session_id(valid_id, session->random, session->user);
-    if (strcmp(valid_id, session->session_id) == 0) {
-      session->expire = time(0) + SESSION_TTL;
-      authorized = 1;
-    }
-  }
-  pthread_rwlock_unlock(&rwlock);
-
-  return authorized;
-}
-
-static void redirect_to_ssl(struct mg_connection *conn,
-                            const struct mg_request_info *request_info) {
-  const char *p, *host = mg_get_header(conn, "Host");
-  if (host != NULL && (p = strchr(host, ':')) != NULL) {
-    mg_printf(conn, "HTTP/1.1 302 Found\r\n"
-              "Location: https://%.*s:8082/%s:8082\r\n\r\n",
-              (int) (p - host), host, request_info->uri);
-  } else {
-    mg_printf(conn, "%s", "HTTP/1.1 500 Error\r\n\r\nHost: header is not set");
-  }
-}
-
-static void *event_handler(enum mg_event event,
-                           struct mg_connection *conn) {
-  const struct mg_request_info *request_info = mg_get_request_info(conn);
-  void *processed = "yes";
-
-  if (event == MG_NEW_REQUEST) {
-    if (!request_info->is_ssl) {
-      redirect_to_ssl(conn, request_info);
-    } else if (!is_authorized(conn, request_info)) {
-      redirect_to_login(conn, request_info);
-    } else if (strcmp(request_info->uri, authorize_url) == 0) {
-      authorize(conn, request_info);
-    } else if (strcmp(request_info->uri, "/ajax/get_messages") == 0) {
-      ajax_get_messages(conn, request_info);
-    } else if (strcmp(request_info->uri, "/ajax/send_message") == 0) {
-      ajax_send_message(conn, request_info);
-    } else {
-      // No suitable handler found, mark as not processed. Mongoose will
-      // try to serve the request.
-      processed = NULL;
-    }
-  } else if (event == MG_EVENT_LOG) {
-    printf("%s\n", (const char *) mg_get_request_info(conn)->ev_data);
-    processed = NULL;
-  } else {
-    processed = NULL;
-  }
-
-  return processed;
-}
-
-static const char *options[] = {
-  "document_root", "html",
-  "listening_ports", "8081,8082s",
-  "ssl_certificate", "ssl_cert.pem",
-  "num_threads", "5",
-  NULL
-};
-
-int main(void) {
-  struct mg_context *ctx;
-
-  // Initialize random number generator. It will be used later on for
-  // the session identifier creation.
-  srand((unsigned) time(0));
-
-  // Setup and start Mongoose
-  if ((ctx = mg_start(&event_handler, NULL, options)) == NULL) {
-    printf("%s\n", "Cannot start chat server, fatal exit");
-    exit(EXIT_FAILURE);
-  }
-
-  // Wait until enter is pressed, then exit
-  printf("Chat server started on ports %s, press enter to quit.\n",
-         mg_get_option(ctx, "listening_ports"));
-  getchar();
-  mg_stop(ctx);
-  printf("%s\n", "Chat server stopped.");
-
-  return EXIT_SUCCESS;
-}
-
-// vim:ts=2:sw=2:et
@@ -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)
@@ -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;
+}
@@ -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)
@@ -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;
+}
@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk
@@ -0,0 +1,43 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+
+static void ev_handler(struct mg_connection *nc, int ev, void *p) {
+  if (ev == MG_EV_HTTP_REQUEST) {
+    mg_serve_http(nc, p, s_http_server_opts);  // Serves static content
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}
@@ -0,0 +1,39 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - static content only</h1>
+
+    <p>
+      This page shows initial steps on how to make a device connected.
+      Mongoose serves static content from the <code>web_root</code>
+      directory. Images, CSS, HTML, JavaScript files could be dropped into the
+      <code>web_root</code> directory - and they'll be served happily
+      by Mongoose.
+    </p>
+
+    <p>
+      Below is a placeholder for the
+      settings section, and a real-time dashboard, which will be
+      implemented in the following examples.
+      Both settings section, and a dashboard section, could be organised
+      differently on this UI - for example, in different tabs. But, to
+      make the demonstration clearer, we show everything on one page.
+    </p>
+
+    <h1>Settings section</h1>
+    <p>Nothing here yet</p>
+
+    <h1>Dashboard section</h1>
+    <p>Nothing here yet</p>
+
+  </div>
+</body>
+</html>
@@ -0,0 +1,31 @@
+* {
+  outline: none;
+}
+
+body {
+  background-color: #36c;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}
+  
@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk
@@ -0,0 +1,81 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+struct device_settings {
+  char setting1[100];
+  char setting2[100];
+};
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+static struct device_settings s_settings = { "value1", "value2" };
+
+static void handle_save(struct mg_connection *nc, struct http_message *hm) {
+  // Get form variables and store settings values
+  mg_get_http_var(&hm->body, "setting1", s_settings.setting1,
+                  sizeof(s_settings.setting1));
+  mg_get_http_var(&hm->body, "setting2", s_settings.setting2,
+                  sizeof(s_settings.setting2));
+
+  // Send response
+  mg_printf(nc, "%s", "HTTP/1.1 302 OK\r\nLocation: /\r\n\r\n");
+}
+
+static void handle_ssi_call(struct mg_connection *nc, const char *param) {
+  if (strcmp(param, "setting1") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting1);
+  } else if (strcmp(param, "setting2") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting2);
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (mg_vcmp(&hm->uri, "/save") == 0) {
+        handle_save(nc, hm);
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts);  // Serve static content
+      }
+      break;
+    case MG_EV_SSI_CALL:
+      handle_ssi_call(nc, ev_data);
+      break;
+    default:
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - settings section</h1>
+
+    <p>
+      This page is one of the series of examples that show how to make
+      devices connected with Mongoose. Here, we create a settings section
+      that expose some internal device variables, and allow user to change
+      them. They could be some stored in a database, in a file, or in
+      firmware RAM. In this example, we store them in RAM, and use two
+      variables, one integer and one string. We use SSI
+      <code>&lt;!--#call parameter_name --&gt;</code> directive to fetch
+      variable values from Mongoose.
+    </p>
+
+    <h1>Settings section</h1>
+    <form method="POST" action="/save">
+      <fieldset>
+        <legend>Device settings</legend>
+        <label>Setting 1:</label> <input type="text"
+          name="setting1" value="<!--#call setting1 -->" >
+        <label>Setting 2:</label> <input type="text"
+          name="setting2" value="<!--#call setting2 -->" >
+
+        <div>
+          <button type="submit">Save Settings</button>
+        </div>
+
+      </fieldset>
+    </form>
+
+    <h1>Dashboard section</h1>
+    <p>Nothing here yet</p>
+
+  </div>
+</body>
+</html>
@@ -0,0 +1,67 @@
+* {
+  outline: none;
+}
+
+body {
+  background: #36c;
+  color: #555;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+fieldset {
+  border: 1px solid #ccc;
+  padding: 1em;
+}
+
+fieldset legend {
+  font-style: italic;
+  color: silver;
+}
+
+fieldset label {
+  text-align: right;
+  padding: 0 1em;
+}
+
+input[type=text] {
+  font-size: 100%;
+  padding: 0.2em;
+  border: 1px solid #ccc;
+}
+
+button {
+  color: #666;
+  background: #eee;
+  border: 1px solid #ccc;
+  padding: 0.2em 2em;
+  font-size: 100%;
+  cursor: pointer;
+  margin-top: 1em;
+}
+
+button:hover {
+  background: #ccc;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}
+  
@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk
@@ -0,0 +1,98 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+struct device_settings {
+  char setting1[100];
+  char setting2[100];
+};
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+static struct device_settings s_settings = { "value1", "value2" };
+
+static void handle_save(struct mg_connection *nc, struct http_message *hm) {
+  // Get form variables and store settings values
+  mg_get_http_var(&hm->body, "setting1", s_settings.setting1,
+                  sizeof(s_settings.setting1));
+  mg_get_http_var(&hm->body, "setting2", s_settings.setting2,
+                  sizeof(s_settings.setting2));
+
+  // Send response
+  mg_printf(nc, "%s", "HTTP/1.1 302 OK\r\nLocation: /\r\n\r\n");
+}
+
+static void handle_get_cpu_usage(struct mg_connection *nc) {
+  // Generate random value, as an example of changing CPU usage
+  // Getting real CPU usage depends on the OS.
+  int cpu_usage = (double) rand() / RAND_MAX * 100.0;
+
+  // Use chunked encoding in order to avoid calculating Content-Length
+  mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
+
+  // Output JSON object which holds CPU usage data
+  mg_printf_http_chunk(nc, "{ \"result\": %d }", cpu_usage);
+
+  // Send empty chunk, the end of response
+  mg_send_http_chunk(nc, "", 0);
+}
+
+static void handle_ssi_call(struct mg_connection *nc, const char *param) {
+  if (strcmp(param, "setting1") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting1);
+  } else if (strcmp(param, "setting2") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting2);
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (mg_vcmp(&hm->uri, "/save") == 0) {
+        handle_save(nc, hm);
+      } else if (mg_vcmp(&hm->uri, "/get_cpu_usage") == 0) {
+        handle_get_cpu_usage(nc);
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts);  // Serve static content
+      }
+      break;
+    case MG_EV_SSI_CALL:
+      handle_ssi_call(nc, ev_data);
+      break;
+    default:
+      break;
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    mg_mgr_poll(&mgr, 1000);
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}
@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+  <script type="text/javascript" src="jquery-1.11.3.min.js"></script>
+  <script type="text/javascript" src="main.js"></script>
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - RESTful call</h1>
+
+    <p>
+      This page is one of the series of examples that show how to make
+      devices connected with Mongoose. Here we add a RESTful call
+      to the Mongoose to show CPU usage stats on a dashboard.
+      RESTful call is done using Jquery's <code>ajax</code> call.
+    </p>
+
+    <h1>Settings section</h1>
+    <form method="POST" action="/save">
+      <fieldset>
+        <legend>Device settings</legend>
+        <label>Setting 1:</label> <input type="text"
+          name="setting1" value="<!--#call setting1 -->" >
+        <label>Setting 2:</label> <input type="text"
+          name="setting2" value="<!--#call setting2 -->" >
+
+        <div>
+          <button type="submit">Save Settings</button>
+        </div>
+
+      </fieldset>
+    </form>
+
+    <h1>Dashboard section</h1>
+    <label>CPU usage:</label> <span id="cpu_usage">&nbsp;</span>
+
+  </div>
+</body>
+</html>
@@ -0,0 +1,5 @@
+/*! jQuery v1.11.3 | (c) 2005, 2015 jQuery Foundation, Inc. | jquery.org/license */
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@@ -0,0 +1,12 @@
+$(document).ready(function() {
+  // Start 1-second timer to call RESTful endpoint
+  setInterval(function() {
+    $.ajax({
+      url: '/get_cpu_usage',
+      dataType: 'json',
+      success: function(json) {
+        $('#cpu_usage').text(json.result + '% ');
+      }
+    });
+  }, 1000);
+});
@@ -0,0 +1,66 @@
+* {
+  outline: none;
+}
+
+body {
+  background: #36c;
+  color: #555;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+fieldset {
+  border: 1px solid #ccc;
+  padding: 1em;
+}
+
+fieldset legend {
+  font-style: italic;
+  color: silver;
+}
+
+fieldset label {
+  text-align: right;
+  padding: 0 1em;
+}
+
+input[type=text] {
+  font-size: 100%;
+  padding: 0.2em;
+  border: 1px solid #ccc;
+}
+
+button {
+  color: #666;
+  background: #eee;
+  border: 1px solid #ccc;
+  padding: 0.2em 2em;
+  font-size: 100%;
+  cursor: pointer;
+  margin-top: 1em;
+}
+
+button:hover {
+  background: #ccc;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}
@@ -0,0 +1,2 @@
+PROG = server
+include ../examples.mk
@@ -0,0 +1,115 @@
+// Copyright (c) 2015 Cesanta Software Limited
+// All rights reserved
+
+#include "mongoose.h"
+
+struct device_settings {
+  char setting1[100];
+  char setting2[100];
+};
+
+static const char *s_http_port = "8000";
+static struct mg_serve_http_opts s_http_server_opts;
+static struct device_settings s_settings = { "value1", "value2" };
+
+static void handle_save(struct mg_connection *nc, struct http_message *hm) {
+  // Get form variables and store settings values
+  mg_get_http_var(&hm->body, "setting1", s_settings.setting1,
+                  sizeof(s_settings.setting1));
+  mg_get_http_var(&hm->body, "setting2", s_settings.setting2,
+                  sizeof(s_settings.setting2));
+
+  // Send response
+  mg_printf(nc, "%s", "HTTP/1.1 302 OK\r\nLocation: /\r\n\r\n");
+}
+
+static void handle_get_cpu_usage(struct mg_connection *nc) {
+  // Generate random value, as an example of changing CPU usage
+  // Getting real CPU usage depends on the OS.
+  int cpu_usage = (double) rand() / RAND_MAX * 100.0;
+
+  // Use chunked encoding in order to avoid calculating Content-Length
+  mg_printf(nc, "%s", "HTTP/1.1 200 OK\r\nTransfer-Encoding: chunked\r\n\r\n");
+
+  // Output JSON object which holds CPU usage data
+  mg_printf_http_chunk(nc, "{ \"result\": %d }", cpu_usage);
+
+  // Send empty chunk, the end of response
+  mg_send_http_chunk(nc, "", 0);
+}
+
+static void handle_ssi_call(struct mg_connection *nc, const char *param) {
+  if (strcmp(param, "setting1") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting1);
+  } else if (strcmp(param, "setting2") == 0) {
+    mg_printf_html_escape(nc, "%s", s_settings.setting2);
+  }
+}
+
+static void ev_handler(struct mg_connection *nc, int ev, void *ev_data) {
+  struct http_message *hm = (struct http_message *) ev_data;
+
+  switch (ev) {
+    case MG_EV_HTTP_REQUEST:
+      if (mg_vcmp(&hm->uri, "/save") == 0) {
+        handle_save(nc, hm);
+      } else if (mg_vcmp(&hm->uri, "/get_cpu_usage") == 0) {
+        handle_get_cpu_usage(nc);
+      } else {
+        mg_serve_http(nc, hm, s_http_server_opts);  // Serve static content
+      }
+      break;
+    case MG_EV_SSI_CALL:
+      handle_ssi_call(nc, ev_data);
+      break;
+    default:
+      break;
+  }
+}
+
+static void push_data_to_all_websocket_connections(struct mg_mgr *m) {
+  struct mg_connection *c;
+  int memory_usage = (double) rand() / RAND_MAX * 100.0;
+
+  for (c = mg_next(m, NULL); c != NULL; c = mg_next(m, c)) {
+    if (c->flags & MG_F_IS_WEBSOCKET) {
+      mg_printf_websocket_frame(c, WEBSOCKET_OP_TEXT, "%d", memory_usage);
+    }
+  }
+}
+
+int main(void) {
+  struct mg_mgr mgr;
+  struct mg_connection *nc;
+  cs_stat_t st;
+
+  mg_mgr_init(&mgr, NULL);
+  nc = mg_bind(&mgr, s_http_port, ev_handler);
+  if (nc == NULL) {
+    fprintf(stderr, "Cannot bind to %s\n", s_http_port);
+    exit(1);
+  }
+
+  // Set up HTTP server parameters
+  mg_set_protocol_http_websocket(nc);
+  s_http_server_opts.document_root = "web_root";  // Set up web root directory
+
+  if (mg_stat(s_http_server_opts.document_root, &st) != 0) {
+    fprintf(stderr, "%s", "Cannot find web_root directory, exiting\n");
+    exit(1);
+  }
+
+  printf("Starting web server on port %s\n", s_http_port);
+  for (;;) {
+    static time_t last_time;
+    time_t now = time(NULL);
+    mg_mgr_poll(&mgr, 1000);
+    if (now - last_time > 0) {
+      push_data_to_all_websocket_connections(&mgr);
+      last_time = now;
+    }
+  }
+  mg_mgr_free(&mgr);
+
+  return 0;
+}
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8" />
+  <title>Connected device demo</title>
+  <meta name="viewport" content="width=device-width, initial-scale=1" />
+  <link rel="stylesheet" type="text/css" href="style.css">
+  <script type="text/javascript" src="jquery-1.11.3.min.js"></script>
+  <script src="jquery.flot.min.js"></script>
+  <script src="jquery.flot.time.js"></script>
+  <script type="text/javascript" src="main.js"></script>
+</head>
+<body>
+  <div class="content">
+    <img src="logo.png" style="float:right; height: 50px; border-radius: 3px;">
+    <h1>Connected device demo - Websocket push</h1>
+
+    <p>
+      This page is one of the series of examples that show how to make
+      devices connected with Mongoose. Here we add a real-time Websocket
+      server push, and update dashboard graph as data arrives.
+    </p>
+
+    <h1>Settings section</h1>
+    <form method="POST" action="/save">
+      <fieldset>
+        <legend>Device settings</legend>
+        <label>Setting 1:</label> <input type="text"
+          name="setting1" value="<!--#call setting1 -->" >
+        <label>Setting 2:</label> <input type="text"
+          name="setting2" value="<!--#call setting2 -->" >
+
+        <div>
+          <button type="submit">Save Settings</button>
+        </div>
+
+      </fieldset>
+    </form>
+
+    <h1>Dashboard section</h1>
+    <label>CPU usage:</label> <span id="cpu_usage">&nbsp;</span>
+    <div id="graphs"></div>
+
+  </div>
+</body>
+</html>
@@ -0,0 +1,5 @@
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+
+*/
+(function($){$.color={};$.color.make=function(r,g,b,a){var o={};o.r=r||0;o.g=g||0;o.b=b||0;o.a=a!=null?a:1;o.add=function(c,d){for(var i=0;i<c.length;++i)o[c.charAt(i)]+=d;return o.normalize()};o.scale=function(c,f){for(var i=0;i<c.length;++i)o[c.charAt(i)]*=f;return o.normalize()};o.toString=function(){if(o.a>=1){return"rgb("+[o.r,o.g,o.b].join(",")+")"}else{return"rgba("+[o.r,o.g,o.b,o.a].join(",")+")"}};o.normalize=function(){function clamp(min,value,max){return value<min?min:value>max?max:value}o.r=clamp(0,parseInt(o.r),255);o.g=clamp(0,parseInt(o.g),255);o.b=clamp(0,parseInt(o.b),255);o.a=clamp(0,o.a,1);return o};o.clone=function(){return $.color.make(o.r,o.b,o.g,o.a)};return o.normalize()};$.color.extract=function(elem,css){var c;do{c=elem.css(css).toLowerCase();if(c!=""&&c!="transparent")break;elem=elem.parent()}while(elem.length&&!$.nodeName(elem.get(0),"body"));if(c=="rgba(0, 0, 0, 0)")c="transparent";return $.color.parse(c)};$.color.parse=function(str){var res,m=$.color.make;if(res=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10));if(res=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseInt(res[1],10),parseInt(res[2],10),parseInt(res[3],10),parseFloat(res[4]));if(res=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55);if(res=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(str))return m(parseFloat(res[1])*2.55,parseFloat(res[2])*2.55,parseFloat(res[3])*2.55,parseFloat(res[4]));if(res=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))return m(parseInt(res[1],16),parseInt(res[2],16),parseInt(res[3],16));if(res=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))return m(parseInt(res[1]+res[1],16),parseInt(res[2]+res[2],16),parseInt(res[3]+res[3],16));var name=$.trim(str).toLowerCase();if(name=="transparent")return m(255,255,255,0);else{res=lookupColors[name]||[0,0,0];return m(res[0],res[1],res[2])}};var lookupColors={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery);(function($){var hasOwnProperty=Object.prototype.hasOwnProperty;if(!$.fn.detach){$.fn.detach=function(){return this.each(function(){if(this.parentNode){this.parentNode.removeChild(this)}})}}function Canvas(cls,container){var element=container.children("."+cls)[0];if(element==null){element=document.createElement("canvas");element.className=cls;$(element).css({direction:"ltr",position:"absolute",left:0,top:0}).appendTo(container);if(!element.getContext){if(window.G_vmlCanvasManager){element=window.G_vmlCanvasManager.initElement(element)}else{throw new Error("Canvas is not available. 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+if(yrange.from==null)yrange.from=yrange.axis.min;if(yrange.to==null)yrange.to=yrange.axis.max;if(xrange.to<xrange.axis.min||xrange.from>xrange.axis.max||yrange.to<yrange.axis.min||yrange.from>yrange.axis.max)continue;xrange.from=Math.max(xrange.from,xrange.axis.min);xrange.to=Math.min(xrange.to,xrange.axis.max);yrange.from=Math.max(yrange.from,yrange.axis.min);yrange.to=Math.min(yrange.to,yrange.axis.max);var xequal=xrange.from===xrange.to,yequal=yrange.from===yrange.to;if(xequal&&yequal){continue}xrange.from=Math.floor(xrange.axis.p2c(xrange.from));xrange.to=Math.floor(xrange.axis.p2c(xrange.to));yrange.from=Math.floor(yrange.axis.p2c(yrange.from));yrange.to=Math.floor(yrange.axis.p2c(yrange.to));if(xequal||yequal){var 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drawSeries(series){if(series.lines.show)drawSeriesLines(series);if(series.bars.show)drawSeriesBars(series);if(series.points.show)drawSeriesPoints(series)}function drawSeriesLines(series){function plotLine(datapoints,xoffset,yoffset,axisx,axisy){var points=datapoints.points,ps=datapoints.pointsize,prevx=null,prevy=null;ctx.beginPath();for(var i=ps;i<points.length;i+=ps){var x1=points[i-ps],y1=points[i-ps+1],x2=points[i],y2=points[i+1];if(x1==null||x2==null)continue;if(y1<=y2&&y1<axisy.min){if(y2<axLine truncated
@@ -0,0 +1,432 @@
+/* Pretty handling of time axes.
+
+Copyright (c) 2007-2014 IOLA and Ole Laursen.
+Licensed under the MIT license.
+
+Set axis.mode to "time" to enable. See the section "Time series data" in
+API.txt for details.
+
+*/
+
+(function($) {
+
+	var options = {
+		xaxis: {
+			timezone: null,		// "browser" for local to the client or timezone for timezone-js
+			timeformat: null,	// format string to use
+			twelveHourClock: false,	// 12 or 24 time in time mode
+			monthNames: null	// list of names of months
+		}
+	};
+
+	// round to nearby lower multiple of base
+
+	function floorInBase(n, base) {
+		return base * Math.floor(n / base);
+	}
+
+	// Returns a string with the date d formatted according to fmt.
+	// A subset of the Open Group's strftime format is supported.
+
+	function formatDate(d, fmt, monthNames, dayNames) {
+
+		if (typeof d.strftime == "function") {
+			return d.strftime(fmt);
+		}
+
+		var leftPad = function(n, pad) {
+			n = "" + n;
+			pad = "" + (pad == null ? "0" : pad);
+			return n.length == 1 ? pad + n : n;
+		};
+
+		var r = [];
+		var escape = false;
+		var hours = d.getHours();
+		var isAM = hours < 12;
+
+		if (monthNames == null) {
+			monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
+		}
+
+		if (dayNames == null) {
+			dayNames = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
+		}
+
+		var hours12;
+
+		if (hours > 12) {
+			hours12 = hours - 12;
+		} else if (hours == 0) {
+			hours12 = 12;
+		} else {
+			hours12 = hours;
+		}
+
+		for (var i = 0; i < fmt.length; ++i) {
+
+			var c = fmt.charAt(i);
+
+			if (escape) {
+				switch (c) {
+					case 'a': c = "" + dayNames[d.getDay()]; break;
+					case 'b': c = "" + monthNames[d.getMonth()]; break;
+					case 'd': c = leftPad(d.getDate()); break;
+					case 'e': c = leftPad(d.getDate(), " "); break;
+					case 'h':	// For back-compat with 0.7; remove in 1.0
+					case 'H': c = leftPad(hours); break;
+					case 'I': c = leftPad(hours12); break;
+					case 'l': c = leftPad(hours12, " "); break;
+					case 'm': c = leftPad(d.getMonth() + 1); break;
+					case 'M': c = leftPad(d.getMinutes()); break;
+					// quarters not in Open Group's strftime specification
+					case 'q':
+						c = "" + (Math.floor(d.getMonth() / 3) + 1); break;
+					case 'S': c = leftPad(d.getSeconds()); break;
+					case 'y': c = leftPad(d.getFullYear() % 100); break;
+					case 'Y': c = "" + d.getFullYear(); break;
+					case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
+					case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
+					case 'w': c = "" + d.getDay(); break;
+				}
+				r.push(c);
+				escape = false;
+			} else {
+				if (c == "%") {
+					escape = true;
+				} else {
+					r.push(c);
+				}
+			}
+		}
+
+		return r.join("");
+	}
+
+	// To have a consistent view of time-based data independent of which time
+	// zone the client happens to be in we need a date-like object independent
+	// of time zones.  This is done through a wrapper that only calls the UTC
+	// versions of the accessor methods.
+
+	function makeUtcWrapper(d) {
+
+		function addProxyMethod(sourceObj, sourceMethod, targetObj, targetMethod) {
+			sourceObj[sourceMethod] = function() {
+				return targetObj[targetMethod].apply(targetObj, arguments);
+			};
+		};
+
+		var utc = {
+			date: d
+		};
+
+		// support strftime, if found
+
+		if (d.strftime != undefined) {
+			addProxyMethod(utc, "strftime", d, "strftime");
+		}
+
+		addProxyMethod(utc, "getTime", d, "getTime");
+		addProxyMethod(utc, "setTime", d, "setTime");
+
+		var props = ["Date", "Day", "FullYear", "Hours", "Milliseconds", "Minutes", "Month", "Seconds"];
+
+		for (var p = 0; p < props.length; p++) {
+			addProxyMethod(utc, "get" + props[p], d, "getUTC" + props[p]);
+			addProxyMethod(utc, "set" + props[p], d, "setUTC" + props[p]);
+		}
+
+		return utc;
+	};
+
+	// select time zone strategy.  This returns a date-like object tied to the
+	// desired timezone
+
+	function dateGenerator(ts, opts) {
+		if (opts.timezone == "browser") {
+			return new Date(ts);
+		} else if (!opts.timezone || opts.timezone == "utc") {
+			return makeUtcWrapper(new Date(ts));
+		} else if (typeof timezoneJS != "undefined" && typeof timezoneJS.Date != "undefined") {
+			var d = new timezoneJS.Date();
+			// timezone-js is fickle, so be sure to set the time zone before
+			// setting the time.
+			d.setTimezone(opts.timezone);
+			d.setTime(ts);
+			return d;
+		} else {
+			return makeUtcWrapper(new Date(ts));
+		}
+	}
+	
+	// map of app. size of time units in milliseconds
+
+	var timeUnitSize = {
+		"second": 1000,
+		"minute": 60 * 1000,
+		"hour": 60 * 60 * 1000,
+		"day": 24 * 60 * 60 * 1000,
+		"month": 30 * 24 * 60 * 60 * 1000,
+		"quarter": 3 * 30 * 24 * 60 * 60 * 1000,
+		"year": 365.2425 * 24 * 60 * 60 * 1000
+	};
+
+	// the allowed tick sizes, after 1 year we use
+	// an integer algorithm
+
+	var baseSpec = [
+		[1, "second"], [2, "second"], [5, "second"], [10, "second"],
+		[30, "second"], 
+		[1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
+		[30, "minute"], 
+		[1, "hour"], [2, "hour"], [4, "hour"],
+		[8, "hour"], [12, "hour"],
+		[1, "day"], [2, "day"], [3, "day"],
+		[0.25, "month"], [0.5, "month"], [1, "month"],
+		[2, "month"]
+	];
+
+	// we don't know which variant(s) we'll need yet, but generating both is
+	// cheap
+
+	var specMonths = baseSpec.concat([[3, "month"], [6, "month"],
+		[1, "year"]]);
+	var specQuarters = baseSpec.concat([[1, "quarter"], [2, "quarter"],
+		[1, "year"]]);
+
+	function init(plot) {
+		plot.hooks.processOptions.push(function (plot, options) {
+			$.each(plot.getAxes(), function(axisName, axis) {
+
+				var opts = axis.options;
+
+				if (opts.mode == "time") {
+					axis.tickGenerator = function(axis) {
+
+						var ticks = [];
+						var d = dateGenerator(axis.min, opts);
+						var minSize = 0;
+
+						// make quarter use a possibility if quarters are
+						// mentioned in either of these options
+
+						var spec = (opts.tickSize && opts.tickSize[1] ===
+							"quarter") ||
+							(opts.minTickSize && opts.minTickSize[1] ===
+							"quarter") ? specQuarters : specMonths;
+
+						if (opts.minTickSize != null) {
+							if (typeof opts.tickSize == "number") {
+								minSize = opts.tickSize;
+							} else {
+								minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]];
+							}
+						}
+
+						for (var i = 0; i < spec.length - 1; ++i) {
+							if (axis.delta < (spec[i][0] * timeUnitSize[spec[i][1]]
+											  + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
+								&& spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) {
+								break;
+							}
+						}
+
+						var size = spec[i][0];
+						var unit = spec[i][1];
+
+						// special-case the possibility of several years
+
+						if (unit == "year") {
+
+							// if given a minTickSize in years, just use it,
+							// ensuring that it's an integer
+
+							if (opts.minTickSize != null && opts.minTickSize[1] == "year") {
+								size = Math.floor(opts.minTickSize[0]);
+							} else {
+
+								var magn = Math.pow(10, Math.floor(Math.log(axis.delta / timeUnitSize.year) / Math.LN10));
+								var norm = (axis.delta / timeUnitSize.year) / magn;
+
+								if (norm < 1.5) {
+									size = 1;
+								} else if (norm < 3) {
+									size = 2;
+								} else if (norm < 7.5) {
+									size = 5;
+								} else {
+									size = 10;
+								}
+
+								size *= magn;
+							}
+
+							// minimum size for years is 1
+
+							if (size < 1) {
+								size = 1;
+							}
+						}
+
+						axis.tickSize = opts.tickSize || [size, unit];
+						var tickSize = axis.tickSize[0];
+						unit = axis.tickSize[1];
+
+						var step = tickSize * timeUnitSize[unit];
+
+						if (unit == "second") {
+							d.setSeconds(floorInBase(d.getSeconds(), tickSize));
+						} else if (unit == "minute") {
+							d.setMinutes(floorInBase(d.getMinutes(), tickSize));
+						} else if (unit == "hour") {
+							d.setHours(floorInBase(d.getHours(), tickSize));
+						} else if (unit == "month") {
+							d.setMonth(floorInBase(d.getMonth(), tickSize));
+						} else if (unit == "quarter") {
+							d.setMonth(3 * floorInBase(d.getMonth() / 3,
+								tickSize));
+						} else if (unit == "year") {
+							d.setFullYear(floorInBase(d.getFullYear(), tickSize));
+						}
+
+						// reset smaller components
+
+						d.setMilliseconds(0);
+
+						if (step >= timeUnitSize.minute) {
+							d.setSeconds(0);
+						}
+						if (step >= timeUnitSize.hour) {
+							d.setMinutes(0);
+						}
+						if (step >= timeUnitSize.day) {
+							d.setHours(0);
+						}
+						if (step >= timeUnitSize.day * 4) {
+							d.setDate(1);
+						}
+						if (step >= timeUnitSize.month * 2) {
+							d.setMonth(floorInBase(d.getMonth(), 3));
+						}
+						if (step >= timeUnitSize.quarter * 2) {
+							d.setMonth(floorInBase(d.getMonth(), 6));
+						}
+						if (step >= timeUnitSize.year) {
+							d.setMonth(0);
+						}
+
+						var carry = 0;
+						var v = Number.NaN;
+						var prev;
+
+						do {
+
+							prev = v;
+							v = d.getTime();
+							ticks.push(v);
+
+							if (unit == "month" || unit == "quarter") {
+								if (tickSize < 1) {
+
+									// a bit complicated - we'll divide the
+									// month/quarter up but we need to take
+									// care of fractions so we don't end up in
+									// the middle of a day
+
+									d.setDate(1);
+									var start = d.getTime();
+									d.setMonth(d.getMonth() +
+										(unit == "quarter" ? 3 : 1));
+									var end = d.getTime();
+									d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
+									carry = d.getHours();
+									d.setHours(0);
+								} else {
+									d.setMonth(d.getMonth() +
+										tickSize * (unit == "quarter" ? 3 : 1));
+								}
+							} else if (unit == "year") {
+								d.setFullYear(d.getFullYear() + tickSize);
+							} else {
+								d.setTime(v + step);
+							}
+						} while (v < axis.max && v != prev);
+
+						return ticks;
+					};
+
+					axis.tickFormatter = function (v, axis) {
+
+						var d = dateGenerator(v, axis.options);
+
+						// first check global format
+
+						if (opts.timeformat != null) {
+							return formatDate(d, opts.timeformat, opts.monthNames, opts.dayNames);
+						}
+
+						// possibly use quarters if quarters are mentioned in
+						// any of these places
+
+						var useQuarters = (axis.options.tickSize &&
+								axis.options.tickSize[1] == "quarter") ||
+							(axis.options.minTickSize &&
+								axis.options.minTickSize[1] == "quarter");
+
+						var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
+						var span = axis.max - axis.min;
+						var suffix = (opts.twelveHourClock) ? " %p" : "";
+						var hourCode = (opts.twelveHourClock) ? "%I" : "%H";
+						var fmt;
+
+						if (t < timeUnitSize.minute) {
+							fmt = hourCode + ":%M:%S" + suffix;
+						} else if (t < timeUnitSize.day) {
+							if (span < 2 * timeUnitSize.day) {
+								fmt = hourCode + ":%M" + suffix;
+							} else {
+								fmt = "%b %d " + hourCode + ":%M" + suffix;
+							}
+						} else if (t < timeUnitSize.month) {
+							fmt = "%b %d";
+						} else if ((useQuarters && t < timeUnitSize.quarter) ||
+							(!useQuarters && t < timeUnitSize.year)) {
+							if (span < timeUnitSize.year) {
+								fmt = "%b";
+							} else {
+								fmt = "%b %Y";
+							}
+						} else if (useQuarters && t < timeUnitSize.year) {
+							if (span < timeUnitSize.year) {
+								fmt = "Q%q";
+							} else {
+								fmt = "Q%q %Y";
+							}
+						} else {
+							fmt = "%Y";
+						}
+
+						var rt = formatDate(d, fmt, opts.monthNames, opts.dayNames);
+
+						return rt;
+					};
+				}
+			});
+		});
+	}
+
+	$.plot.plugins.push({
+		init: init,
+		options: options,
+		name: 'time',
+		version: '1.0'
+	});
+
+	// Time-axis support used to be in Flot core, which exposed the
+	// formatDate function on the plot object.  Various plugins depend
+	// on the function, so we need to re-expose it here.
+
+	$.plot.formatDate = formatDate;
+	$.plot.dateGenerator = dateGenerator;
+
+})(jQuery);
@@ -0,0 +1,75 @@
+$(document).ready(function() {
+  // Start 1-second timer to call RESTful endpoint
+  setInterval(function() {
+    $.ajax({
+      url: '/get_cpu_usage',
+      dataType: 'json',
+      success: function(json) {
+        $('#cpu_usage').text(json.result + '% ');
+      }
+    });
+  }, 1000);
+
+  // Initialize graph
+  var $c = $('<div class="graph"/>').appendTo('#graphs');
+  var dur = 120;
+  var past = Date.now() - dur * 1000;
+  var options = {
+    lines: {
+      fill: true,
+      lineWidth: 0,
+      fillColor: {colors: [ { opacity: 0 }, { opacity: 1 } ] }
+    },
+    grid: { borderWidth: 1, borderColor: '#ccc'},
+    xaxis: { mode: 'time', ticks: 5 },
+    legend: { labelBoxBorderColor: '#fff' },
+    colors: [ '#fec', '#396', '#e39', '9e2' ],
+    hooks: {
+      draw: [function(plot, canvas) {
+        canvas.font = '13px sans-serif';
+        canvas.fillStyle = '#aaa';
+        canvas.fillText('Resource Usage', 35, 25);
+      }]
+    }
+  };
+  var plot = $.plot($c, [], options);
+
+  var updateGraph = function(counter) {
+    var data = plot.getData();
+    var now = Date.now();
+    var oldest = now - dur * 1000;
+    data[0] = {
+      show: false,
+      data: [[oldest, null], [now, null]]
+    };
+
+    console.log(data);
+
+    // Remove old points
+    $.each(data, function(di, d) {
+      while (d.data.length > 0 && d.data[0][0] < oldest) {
+        d.data.shift();
+      }
+    });
+
+    // Add new points
+    var new_datapoint = [now, counter];
+    if (data[1]) {
+      data[1].label = 'memory';
+      data[1].data.push(new_datapoint);
+    } else {
+      data[1] = [{ data: [new_datapoint] }];
+    }
+
+    // Redraw the graph
+    plot.setData(data);
+    plot.setupGrid();
+    plot.draw();
+  };
+
+  // Create Websocket connection. For simplicity, no reconnect logic is here.
+  var ws = new WebSocket('ws://' + location.host);
+  ws.onmessage = function(ev) {
+    updateGraph(ev.data);
+  };
+});
@@ -0,0 +1,87 @@
+* {
+  outline: none;
+}
+
+body {
+  background: #36c;
+  color: #555;
+  margin: 0;
+  padding: 0;
+  font: 16px/1.4 Helvetica, Arial, sans-serif;
+}
+
+div.content {
+  width: 800px;
+  margin: 1em auto;
+  padding: 2em;
+  background-color: #fff;
+  border-radius: 1em;
+}
+
+fieldset {
+  border: 1px solid #ccc;
+  padding: 1em;
+}
+
+fieldset legend {
+  font-style: italic;
+  color: silver;
+}
+
+fieldset label {
+  text-align: right;
+  padding: 0 1em;
+}
+
+input[type=text] {
+  font-size: 100%;
+  padding: 0.2em;
+  border: 1px solid #ccc;
+}
+
+button {
+  color: #666;
+  background: #eee;
+  border: 1px solid #ccc;
+  padding: 0.2em 2em;
+  font-size: 100%;
+  cursor: pointer;
+  margin-top: 1em;
+}
+
+button:hover {
+  background: #ccc;
+}
+
+code {
+  background: #f0f0f0;
+  padding: 0 0.3em;
+  color: #396;
+  border-radius: 0.3em;
+}
+
+a:link, a:visited {
+  color: #69c;
+  text-decoration: none;
+}
+
+#graphs {
+  margin-top: 1em;
+}
+
+.graph {
+  min-height: 12em;
+  border: 0px solid #ccc;
+  position: relative;
+  margin: 0 1em 1em 0;
+  width: 36em;
+  display: inline-block;
+}
+
+.graph_title {
+  position: absolute;
+  top: 0.5em; left: 1em;
+  color: #ccc;
+  font-weight: bold;
+  z-index: 999;
+}
@@ -0,0 +1,13 @@
+SOURCES = $(PROG).c ../../mongoose.c
+CFLAGS = -W -Wall -I../.. -Wno-unused-function $(CFLAGS_EXTRA) $(MODULE_CFLAGS)
+
+all: $(PROG)
+
+$(PROG): $(SOURCES)
+	$(CC) $(SOURCES) -o $@ $(CFLAGS)
+
+$(PROG).exe: $(SOURCES)
+	cl $(SOURCES) /I../.. /MD /Fe$@
+
+clean:
+	rm -rf *.gc* *.dSYM *.exe *.obj *.o a.out $(PROG)
@@ -1,37 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-#include "mongoose.h"
-
-static void *callback(enum mg_event event,
-                      struct mg_connection *conn) {
-  const struct mg_request_info *request_info = mg_get_request_info(conn);
-
-  if (event == MG_NEW_REQUEST) {
-    char content[1024];
-    int content_length = snprintf(content, sizeof(content),
-                                  "Hello from mongoose! Remote port: %d",
-                                  request_info->remote_port);
-    mg_printf(conn,
-              "HTTP/1.1 200 OK\r\n"
-              "Content-Type: text/plain\r\n"
-              "Content-Length: %d\r\n"        // Always set Content-Length
-              "\r\n"
-              "%s",
-              content_length, content);
-    // Mark as processed
-    return "";
-  } else {
-    return NULL;
-  }
-}
-
-int main(void) {
-  struct mg_context *ctx;
-  const char *options[] = {"listening_ports", "8080", NULL};
-
-  ctx = mg_start(&callback, NULL, options);
-  getchar();  // Wait until user hits "enter"
-  mg_stop(ctx);
-
-  return 0;
-}
@@ -1,73 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
-  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
-<html xmlns="http://www.w3.org/1999/xhtml" lang="en" dir="ltr"> 
-  <!-- This file is part of the  Mongoose project,
-    http://code.google.com/p/mongoose -->
-  <head>
-    <title>Mongoose chat server</title>
-    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
-    <link type="text/css" rel="stylesheet" href="style.css"/>
-    <script src="jquery.js"></script>
-    <script src="main.js"></script>
-  </head>
-
-  <body>
-  <div id="header">
-    <div id="logo"></div>
-    <div class="rounded infobox help-message" id="motd">
-      Chat room implemented using
-      <a href="http://code.google.com/p/mongoose" target="_blank">Mongoose</a>
-      embeddable web server.
-      This application was written for educational purposes demonstrating
-      how web interface could be decoupled from the business logic. Not a
-      single line of HTML is generated by the server, instead, server
-      gives data to the client in JSON format.
-    </div>
-  </div>
-  <div>
-
-  <div id="middle">
-    <div><center><span id="error" class="rounded"></span><center></div>
-
-    <div id="menu">
-      <div class="menu-item left-rounded menu-item-selected"
-      	name="chat">Chat</div>
-      <div class="menu-item left-rounded" name="settings">Settings</div>
-    </div>
-
-    <div id="content" class="rounded">
-
-      <div id="chat" class="main">
-        <div class="chat-window">
-          <span class="top-rounded chat-title">Main room</span>
-          <div class="bottom-rounded chat-content">
-            <div class="message-list" id="mml">
-            </div>
-            <input type="text" size="40" class="message-input"></input>
-            <span class="help-message">
-              Type your message here and press enter</span>
-          </div>
-        </div>
-      </div>
-
-      <div id="settings" class="hidden main">
-        <div>
-          <span class="top-rounded chat-title">Settings</span>
-          <div class="bottom-rounded chat-content">
-	    <table>
-	      <tr><td>Max messages to display:</td><td>blah blah</td></tr>
-	      <tr><td>Text color:</td><td>blah blah</td></tr>
-	    </table>
-          </div>
-        </div>
-      </div>
-
-    </div>
-  </div>
-
-  <div id="footer">
-    Copyright &copy; 2004-2010 by Sergey Lyubka
-  </div>
-
-  </body>
-</html>
@@ -1,154 +0,0 @@
-/*!
- * jQuery JavaScript Library v1.4.2
- * http://jquery.com/
- *
- * Copyright 2010, John Resig
- * Dual licensed under the MIT or GPL Version 2 licenses.
- * http://jquery.org/license
- *
- * Includes Sizzle.js
- * http://sizzlejs.com/
- * Copyright 2010, The Dojo Foundation
- * Released under the MIT, BSD, and GPL Licenses.
- *
- * Date: Sat Feb 13 22:33:48 2010 -0500
- */
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@@ -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>
@@ -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: '',
-  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({
-    dataType: 'jsonp',
-    url: chat.backendUrl + '/ajax/get_messages',
-    data: {last_id: chat.lastMessageId},
-    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;
-  $.ajax({
-    dataType: 'jsonp',
-    url: chat.backendUrl + '/ajax/send_message',
-    data: {text: input.value},
-    success: function(ev) {
-      input.value = '';
-      input.disabled = false;
-      chat.getMessages(false);
-    },
-    error: function(ev) {
-      chat.showError('Error sending message');
-      input.disabled = false;
-    },
-  });
-};
-
-$(document).ready(function() {
-  $('.menu-item').click(chat.handleMenuItemClick);
-  $('.message-input').keypress(chat.handleMessageInput);
-  chat.getMessages(true);
-});
-
-// vim:ts=2:sw=2:et
@@ -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;
-}
@@ -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)
@@ -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;
+}
@@ -0,0 +1,163 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\mongoose.c">
+      <WarningLevel Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">TurnOffAllWarnings</WarningLevel>
+      <WarningLevel Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">TurnOffAllWarnings</WarningLevel>
+    </ClCompile>
+    <ClCompile Include="http_client.c" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="..\..\mongoose.h" />
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{BDF3FC6F-2658-4A27-846D-6A45FB53C602}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>http_client</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level4</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;MG_ENABLE_THREADS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>./../../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;MG_ENABLE_THREADS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+      <AdditionalIncludeDirectories>./../../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
@@ -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)
@@ -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;
+}
@@ -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"]
@@ -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)
@@ -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.
+
@@ -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;
+}
@@ -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 $?
@@ -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)
@@ -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);
+  }
+}
@@ -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)
@@ -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);
+  }
+}
@@ -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)
@@ -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;
+}
@@ -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)
@@ -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;
+}
@@ -1,61 +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 *callback(enum mg_event event,
-                      struct mg_connection *conn) {
-  const struct mg_request_info *ri = mg_get_request_info(conn);
-
-  if (event == MG_NEW_REQUEST) {
-    if (!strcmp(ri->uri, "/handle_post_request")) {
-      // User has submitted a form, show submitted data and a variable value
-      char post_data[1024],
-           input1[sizeof(post_data)], input2[sizeof(post_data)];
-      int post_data_len;
-
-      // Read POST data
-      post_data_len = mg_read(conn, post_data, sizeof(post_data));
-
-      // Parse form data. input1 and input2 are guaranteed to be NUL-terminated
-      mg_get_var(post_data, post_data_len, "input_1", input1, sizeof(input1));
-      mg_get_var(post_data, post_data_len, "input_2", input2, sizeof(input2));
-
-      mg_printf(conn, "HTTP/1.0 200 OK\r\n"
-                "Content-Type: text/plain\r\n\r\n"
-                "Submitted data: [%.*s]\n"
-                "Submitted data length: %d bytes\n"
-                "input_1: [%s]\n"
-                "input_2: [%s]\n",
-                post_data_len, post_data, post_data_len, input1, input2);
-    } else {
-      // Show HTML form.
-      mg_printf(conn, "HTTP/1.0 200 OK\r\n"
-                "Content-Length: %d\r\n"
-                "Content-Type: text/html\r\n\r\n%s",
-                (int) strlen(html_form), html_form);
-    }
-    // Mark as processed
-    return "";
-  } else {
-    return NULL;
-  }
-}
-
-int main(void) {
-  struct mg_context *ctx;
-  const char *options[] = {"listening_ports", "8080", NULL};
-
-  ctx = mg_start(&callback, NULL, options);
-  getchar();  // Wait until user hits "enter"
-  mg_stop(ctx);
-
-  return 0;
-}
@@ -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)
@@ -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;
+}
@@ -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)
@@ -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 receive 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
+----