A simple web server mainly based on ideas from Jasper Schuurmans Netduino web server

Dependents:   RdBlindsServer SpideyWallWeb RdGasUseMonitor

A fast and reliable web server for MBED! http://robdobson.com/2015/08/a-reliable-mbed-webserver/

It has a very neat way to implement REST commands and can serve files from local storage (on LPC1768 for instance) and from SD cards. It also has a caching facility which is particularly useful for serving files from local storage.

The server can be run in the main() thread (and has a sub-2ms response time if this is done) or in a mbed-rtos thread which increases the response time to (a still respectable) 30ms or so.

The latest project that uses this is here - https://developer.mbed.org/users/Bobty/code/SpideyWallWeb/

int main (void)
{
    // Ethernet interface
    EthernetInterface::init();

    // Connect ethernet
    EthernetInterface::connect();

    // Init the web server
    pc.printf("Starting web server\r\n");
    char* baseWebFolder = "/sd/";  // should be /sd/ for SDcard files - not used for local file system
    RdWebServer webServer;
    
    // Add commands to handle the home page and favicon
    webServer.addCommand("", RdWebServerCmdDef::CMD_LOCALFILE, NULL, "index.htm", true);
    webServer.addCommand("favicon.ico", RdWebServerCmdDef::CMD_LOCALFILE, NULL, NULL, true);
    
    // Add the lightwall control commands
    webServer.addCommand("name", RdWebServerCmdDef::CMD_CALLBACK, &lightwallGetSystemName);
    webServer.addCommand("clear", RdWebServerCmdDef::CMD_CALLBACK, &lightwallClear);
    webServer.addCommand("rawfill", RdWebServerCmdDef::CMD_CALLBACK, &lightwallRawFill);
    webServer.addCommand("fill", RdWebServerCmdDef::CMD_CALLBACK, &lightwallFill);
    webServer.addCommand("showleds", RdWebServerCmdDef::CMD_CALLBACK, &lightwallShowLeds);
    
    // Start the server
    webServer.init(WEBPORT, &led4, baseWebFolder);
    webServer.run();

}

// Get system name - No arguments required
char* lightwallGetSystemName(int method, char*cmdStr, char* argStr, char* msgBuffer, int msgLen, 
                int contentLen, unsigned char* pPayload, int payloadLen, int splitPayloadPos)
{
    // Perform any required actions here ....

    // ...

    // Return the system name
    return systemName;
}

This server was originally based on a Netduino web server from Jasper Schuurmans but has been optimised for speed.

Revision:
19:f67ac231b570
Parent:
18:5de680c4cfcb
Child:
20:e6c7db867593
diff -r 5de680c4cfcb -r f67ac231b570 RdWebServer.h
--- a/RdWebServer.h	Mon May 11 14:26:54 2015 +0000
+++ b/RdWebServer.h	Tue May 12 22:16:25 2015 +0000
@@ -77,7 +77,7 @@
         int _nFileLen;
 };
 
-typedef char* (*CmdCallbackType)(int method, char*cmdStr, char* argStr);
+typedef char* (*CmdCallbackType)(int method, char*cmdStr, char* argStr, char* msgBuffer);
 
 class RdWebServerCmdDef
 {
@@ -106,7 +106,13 @@
 };
 
 const int HTTPD_MAX_HDR_LENGTH = 255;
-const int HTTPD_MAX_REQ_LENGTH = 1023;
+#ifdef MCU_MK64F12
+const int HTTPD_MAX_REQ_LENGTH = 2048;
+#warning("TCP Request Length 2048")
+#else
+const int HTTPD_MAX_REQ_LENGTH = 1024;
+#warning("TCP Request Length 1024")
+#endif
 
 class RdWebServer
 {
@@ -121,6 +127,8 @@
         void run();
         void addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback = NULL, char* substFileName = NULL, bool cacheIfPossible = false);
         
+        static char* getPayloadDataFromMsg(char* msgBuf);
+
     private :
         int _port;
         DigitalOut* _pStatusLed;