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:
- 15:0865fa4b046a
- Parent:
- 14:4b83670854f0
- Child:
- 17:080f2bed8b36
diff -r 4b83670854f0 -r 0865fa4b046a RdWebServer.h --- a/RdWebServer.h Tue May 05 15:05:44 2015 +0000 +++ b/RdWebServer.h Tue May 05 20:27:33 2015 +0000 @@ -1,5 +1,5 @@ /* RdWebServer.h - Rob Dobson 2013 + Rob Dobson 2013-2015 Inspired by Jasper Schuurmans multi-threaded web server for Netduino http://www.schuurmans.cc/multi-threaded-web-server-for-netduino-plus */ #ifndef RD_WEB_SERVER @@ -52,9 +52,12 @@ //#define SUPPORT_LOCAL_FILESYSTEM 1 //#define SUPPORT_FOLDER_VIEW 1 +//#define SUPPORT_LOCAL_FILE_CACHE 1 extern RawSerial pc; +#ifdef SUPPORT_LOCAL_FILE_CACHE + class RdFileCacheEntry { public: @@ -78,6 +81,8 @@ int _nFileLen; }; +#endif + typedef char* (*CmdCallbackType)(int method, char*cmdStr, char* argStr); class RdWebServerCmdDef @@ -86,23 +91,27 @@ static const int CMD_LOCALFILE = 1; static const int CMD_CALLBACK = 2; static const int CMD_SDORUSBFILE = 3; - RdWebServerCmdDef(char* pStr, int cmdType, CmdCallbackType callback, char* substFileName, bool bCacheIfPossible) + RdWebServerCmdDef(char* pStr, int cmdType, CmdCallbackType callback, char* subst8dot3FileName = NULL, bool bCacheIfPossible = false) { _pCmdStr = pStr; _cmdType = cmdType; _callback = callback; - _substFileName[0] = '\0'; - if (substFileName != NULL) +#ifdef SUPPORT_LOCAL_FILE_CACHE + _subst8dot3FileName[0] = '\0'; + if (subst8dot3FileName != NULL) { - strncpy(_substFileName, substFileName, RdFileCacheEntry::CACHE_MAX_FNAME_LEN); - _substFileName[RdFileCacheEntry::CACHE_MAX_FNAME_LEN-1] = '\0'; + strncpy(_subst8dot3FileName, subst8dot3FileName, RdFileCacheEntry::CACHE_MAX_FNAME_LEN); + _subst8dot3FileName[RdFileCacheEntry::CACHE_MAX_FNAME_LEN-1] = '\0'; } +#endif _bCacheIfPossible = bCacheIfPossible; }; char* _pCmdStr; int _cmdType; CmdCallbackType _callback; - char _substFileName[RdFileCacheEntry::CACHE_MAX_FNAME_LEN]; +#ifdef SUPPORT_LOCAL_FILE_CACHE + char _subst8dot3FileName[RdFileCacheEntry::CACHE_MAX_FNAME_LEN]; +#endif bool _bCacheIfPossible; }; @@ -120,20 +129,17 @@ bool init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder); void run(); - bool isListening() - { - return _serverIsListening; - }; - void addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback = NULL, char* substFileName = NULL, bool cacheIfPossible = false); private : int _port; DigitalOut* _pStatusLed; - TCPSocketServer _socketSrv; - bool _serverIsListening; + 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]; @@ -142,7 +148,9 @@ void handleLocalFileRequest(char* cmdStr, char* argStr, TCPSocketConnection &client, char* httpHeader, bool bCacheIfPossible); bool handleSDFileRequest(char* cmdStr, char* argStr, TCPSocketConnection &client, char* httpHeader); void handleCGIRequest(char* pUriStr, char* pQueryStr); +#ifdef SUPPORT_LOCAL_FILE_CACHE void sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection &client, char* httpHeader); +#endif bool handleReceivedHttp(TCPSocketConnection &client); };