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 13:4f9c09d3da13, committed 2015-05-04

Comitter:
Bobty
Date:
Mon May 04 17:26:32 2015 +0000
Parent:
12:c14ffd4ec125
Child:
14:4b83670854f0
Commit message:
Debugging

Changed in this revision

RdWebServer.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/RdWebServer.cpp	Sun May 03 20:41:35 2015 +0000
+++ b/RdWebServer.cpp	Mon May 04 17:26:32 2015 +0000
@@ -10,6 +10,7 @@
 
 #define MAX_CMDSTR_LEN 100
 #define MAX_ARGSTR_LEN 100
+#define MAX_FILENAME_LEN (MAX_ARGSTR_LEN + 20)
 
 RdWebServer::RdWebServer()
 {
@@ -26,8 +27,6 @@
 
 bool RdWebServer::init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder)
 {
-    printf("Here\r\n");
-    RD_INFO("Here\r\n");
     _port = port;
     _pStatusLed = pStatusLed;
     _pBaseWebFolder = pBaseWebFolder;
@@ -90,16 +89,32 @@
                 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE)
                 {
                     if ((*it)->_substFileName[0] != '\0')
-                        handleLocalFileRequest((*it)->_substFileName, argStr, client, _httpHeader, (*it)->_bCacheIfPossible);
+                    {
+                        char combinedFileName[MAX_FILENAME_LEN];
+                        strcpy(combinedFileName, (*it)->_substFileName);
+                        if (combinedFileName[strlen(combinedFileName)-1] == '*')
+                            strcpy(combinedFileName+strlen(combinedFileName)-1, argStr);
+                        handleLocalFileRequest(combinedFileName, argStr, client, _httpHeader, (*it)->_bCacheIfPossible);
+                    }
                     else
+                    {
                         handleLocalFileRequest(cmdStr, argStr, client, _httpHeader, (*it)->_bCacheIfPossible);
+                    }
                 }
                 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE)
                 {
                     if ((*it)->_substFileName[0] != '\0')
-                        handleSDFileRequest((*it)->_substFileName, argStr, client, _httpHeader);
+                    {
+                        char combinedFileName[MAX_FILENAME_LEN];
+                        strcpy(combinedFileName, (*it)->_substFileName);
+                        if (combinedFileName[strlen(combinedFileName)-1] == '*')
+                            strcpy(combinedFileName+strlen(combinedFileName)-1, argStr);
+                        handleSDFileRequest(combinedFileName, argStr, client, _httpHeader);
+                    }
                     else
+                    {
                         handleSDFileRequest(cmdStr, argStr, client, _httpHeader);
+                    }
                 }
                 break;
             }
@@ -143,6 +158,7 @@
                 int rxLen = client.receive(_buffer, HTTPD_MAX_REQ_LENGTH);
                 if (rxLen == -1)
                 {
+                    RD_WARN("Nothing received\n\r");
                     continue;
                 }
                 else if (rxLen == 0)