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.
RdWebServer.cpp
- Committer:
- Bobty
- Date:
- 2013-09-18
- Revision:
- 0:b5b4d07f7827
- Child:
- 1:75bb184de749
File content as of revision 0:b5b4d07f7827:
#include "RdWebServer.h" RdWebServer::RdWebServer() { _serverIsListening = false; _pStatusLed = NULL; } RdWebServer::~RdWebServer() { } bool RdWebServer::init(int port, DigitalOut* pStatusLed) { _port = port; _pStatusLed = pStatusLed; // _socketSrv.set_blocking(true); //setup tcp socket if(_socketSrv.bind(port)< 0) { printf("tcp server bind failed.\n\r"); return false; } else { printf("tcp server bind successed.\n\r"); _serverIsListening = true; } if(_socketSrv.listen(1) < 0) { printf("tcp server listen failed.\n\r"); return false; } else { printf("tcp server is listening...\n\r"); } return true; } void RdWebServer::run() { TCPSocketConnection client; bool clientIsConnected = false; //listening for http GET request while (isListening()) { //blocking mode(never timeout) if(_socketSrv.accept(client)<0) { printf("failed to accept connection.\n\r"); } else { printf("connection success!\n\rIP: %s\n\r",client.get_address()); clientIsConnected = true; if (_pStatusLed != NULL) *_pStatusLed = true; while(clientIsConnected) { char buffer[1024] = {}; switch(client.receive(buffer, 1023)) { case 0: printf("recieved buffer is empty.\n\r"); clientIsConnected = false; break; case -1: printf("failed to read data from client.\n\r"); clientIsConnected = false; break; default: printf("Recieved Data: %d\n\r\n\r%.*s\n\r",strlen(buffer),strlen(buffer),buffer); if(buffer[0] == 'G' && buffer[1] == 'E' && buffer[2] == 'T' ) { printf("GET request incomming.\n\r"); //setup http response header & data char echoHeader[256] = {}; sprintf(echoHeader,"HTTP/1.1 200 OK\n\rContent-Length: %d\n\rContent-Type: text\n\rConnection: Close\n\r\n\r",strlen(buffer)); client.send(echoHeader,strlen(echoHeader)); client.send(buffer,strlen(buffer)); clientIsConnected = false; printf("echo back done.\n\r"); } break; } } printf("close connection.\n\rtcp server is listening...\n\r"); client.close(); if (_pStatusLed != NULL) *_pStatusLed = false; } } }