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:
- 18:5de680c4cfcb
- Parent:
- 17:080f2bed8b36
- Child:
- 19:f67ac231b570
diff -r 080f2bed8b36 -r 5de680c4cfcb RdWebServer.h --- a/RdWebServer.h Mon May 11 11:17:15 2015 +0000 +++ b/RdWebServer.h Mon May 11 14:26:54 2015 +0000 @@ -10,6 +10,7 @@ #include "mbed.h" #include "EthernetInterface.h" +// Debug level #ifdef RDWEB_DEBUG #if (RDWEB_DEBUG > 3) #define RD_DBG(x, ...) std::printf("[RD_DBG: %s:%d]" x "\r\n", __FILE__, __LINE__, ##__VA_ARGS__); @@ -50,15 +51,10 @@ #define RD_ERR(x, ...) #endif -//#define SUPPORT_LOCAL_FILESYSTEM 1 -//#define SUPPORT_FOLDER_VIEW 1 -//#define SUPPORT_LOCAL_FILE_CACHE 1 const int SUBST_MAX_FNAME_LEN = 40; // note local files on MBED are 8.3 but this might include other files extern RawSerial pc; -#ifdef SUPPORT_LOCAL_FILE_CACHE - class RdFileCacheEntry { public: @@ -81,8 +77,6 @@ int _nFileLen; }; -#endif - typedef char* (*CmdCallbackType)(int method, char*cmdStr, char* argStr); class RdWebServerCmdDef @@ -133,9 +127,7 @@ TCPSocketServer _serverSocket; bool _initOk; std::vector<RdWebServerCmdDef*> _commands; -#ifdef SUPPORT_LOCAL_FILE_CACHE std::vector<RdFileCacheEntry*> _cachedFiles; -#endif bool extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen); char* _pBaseWebFolder; char _httpHeader[HTTPD_MAX_HDR_LENGTH+1]; @@ -144,9 +136,7 @@ bool handleLocalFileRequest(char* cmdStr, char* argStr, TCPSocketConnection &client, bool bCacheIfPossible); bool handleSDFileRequest(char* cmdStr, char* argStr, TCPSocketConnection &client); void handleCGIRequest(char* pUriStr, char* pQueryStr); -#ifdef SUPPORT_LOCAL_FILE_CACHE void sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection &client); -#endif bool handleReceivedHttp(TCPSocketConnection &client); void formHTTPHeader(const char* rsltCode, const char* contentType, int contentLen);