Rob Dobson / RdWebServer

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.

Files at this revision

API Documentation at this revision

Revision 9:35668248199b, committed 2015-02-22

Comitter:
Bobty
Date:
Sun Feb 22 11:54:18 2015 +0000
Parent:
8:de915bd70ec1
Child:
10:b4b9d4d5e5be
Commit message:
Changed back to non-blocking - seems more stable

Changed in this revision

RdWebServer.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/RdWebServer.cpp	Fri Feb 20 08:53:08 2015 +0000
+++ b/RdWebServer.cpp	Sun Feb 22 11:54:18 2015 +0000
@@ -120,7 +120,7 @@
         }
         else
         {
-            client.set_blocking(false, 1000);
+            client.set_blocking(false, 2000);
             pc.printf("Connection from IP: %s\n\r",client.get_address());
             if (_pStatusLed != NULL)
                 *_pStatusLed = true;
@@ -230,7 +230,7 @@
             char fileBuf[1024];
             while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024) 
             {
-                client.send(fileBuf, rdCnt);
+                client.send_all(fileBuf, rdCnt);
             }
             client.send(fileBuf, rdCnt);
             fclose(fp);