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.
Diff: RdWebServer.h
- Revision:
- 28:99036ff32459
- Parent:
- 26:3c4c10e989b1
- Child:
- 29:46998f2e458f
diff -r 0c2d6f598ae5 -r 99036ff32459 RdWebServer.h --- a/RdWebServer.h Fri Oct 16 08:41:02 2015 +0000 +++ b/RdWebServer.h Mon Feb 08 13:47:29 2016 +0000 @@ -7,10 +7,7 @@ #ifndef RD_WEB_SERVER #define RD_WEB_SERVER -#include <vector> - #include "mbed.h" -#include "EthernetInterface.h" // Debug level #ifdef RDWEB_DEBUG @@ -56,6 +53,8 @@ // Length of strings const int MAX_CMDSTR_LEN = 100; const int MAX_ARGSTR_LEN = 100; +const int MAX_WEB_SERVER_CMDS = 30; +const int MAX_WEB_SERVER_CACHED_FILES = 5; const int SUBST_MAX_FNAME_LEN = 40; // note local files on MBED are 8.3 but this might include other files extern RawSerial pc; @@ -113,14 +112,21 @@ const int HTTPD_MAX_HDR_LENGTH = 255; // The FRDM-K64F has more memory than the LPC1768 so allow a larger buffer -#ifdef MCU_MK64F12 +#if defined(MCU_MK64F12) const int HTTPD_MAX_REQ_LENGTH = 2048; #warning("TCP Request Length 2048") +#elif defined(TARGET_ARCH_BLE) +const int HTTPD_MAX_REQ_LENGTH = 1024; +#warning("TCP Request Length 1024") #else const int HTTPD_MAX_REQ_LENGTH = 1024; #warning("TCP Request Length 1024") #endif +class TCPSocketServer; +class TCPSocketConnection; +class Mutex; + class RdWebServer { public : @@ -128,7 +134,7 @@ static const int METHOD_GET = 1; static const int METHOD_POST = 2; static const int METHOD_OPTIONS = 3; - RdWebServer(Mutex* pSdCardMutex = NULL); + RdWebServer(TCPSocketServer& tcpServerSocket, Mutex* pSdCardMutex = NULL); virtual ~RdWebServer(); bool init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder); @@ -141,10 +147,12 @@ private : int _port; DigitalOut* _pStatusLed; - TCPSocketServer _serverSocket; + TCPSocketServer& _serverSocket; bool _initOk; - std::vector<RdWebServerCmdDef*> _commands; - std::vector<RdFileCacheEntry*> _cachedFiles; + RdWebServerCmdDef* _pWebServerCmds[MAX_WEB_SERVER_CMDS]; + int _numWebServerCmds; + RdFileCacheEntry* _pWebServerCachedFiles[MAX_WEB_SERVER_CACHED_FILES]; + int _numWebServerCachedFiles; bool extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen, int& contentLen); char* _pBaseWebFolder; char _httpHeader[HTTPD_MAX_HDR_LENGTH+1];