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 22:598a21373539, committed 2015-08-29

Comitter:
Bobty
Date:
Sat Aug 29 06:08:00 2015 +0000
Parent:
21:2dfb56648b93
Child:
23:0fc3d7b5e596
Commit message:
Added Access Control Allow Origin to HTTP header in RdWebServer; Added setName/getName for hostname setting in EthernetInterface; Set hostname to systemName

Changed in this revision

RdWebServer.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/RdWebServer.cpp	Thu Aug 20 07:40:20 2015 +0000
+++ b/RdWebServer.cpp	Sat Aug 29 06:08:00 2015 +0000
@@ -228,9 +228,9 @@
 {
     const char* closeConnStr = "\r\nConnection: Close";
     if(contentLen != -1)
-        sprintf(_httpHeader, "HTTP/1.1 %s\r\nContent-Type: %s\r\nContent-Length: %d%s\r\n\r\n", rsltCode, contentType, contentLen, _closeConnAfterSend ? closeConnStr : "");
+        sprintf(_httpHeader, "HTTP/1.1 %s\r\nAccess-Control-Allow-Origin: *\r\nContent-Type: %s\r\nContent-Length: %d%s\r\n\r\n", rsltCode, contentType, contentLen, _closeConnAfterSend ? closeConnStr : "");
     else
-        sprintf(_httpHeader, "HTTP/1.1 %s\r\nContent-Type: %s%s\r\n\r\n", rsltCode, contentType, _closeConnAfterSend ? closeConnStr : "");
+        sprintf(_httpHeader, "HTTP/1.1 %s\r\nAccess-Control-Allow-Origin: *\r\nContent-Type: %s%s\r\n\r\n", rsltCode, contentType, _closeConnAfterSend ? closeConnStr : "");
 }
 
 // Use file extension to determine MIME type