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.cpp
- Revision:
- 12:c14ffd4ec125
- Parent:
- 11:cec51b430b20
- Child:
- 13:4f9c09d3da13
diff -r cec51b430b20 -r c14ffd4ec125 RdWebServer.cpp --- a/RdWebServer.cpp Sun May 03 18:59:42 2015 +0000 +++ b/RdWebServer.cpp Sun May 03 20:41:35 2015 +0000 @@ -4,6 +4,8 @@ More details at http://robdobson.com/2013/10/moving-my-window-shades-control-to-mbed/ */ +#define RDWEB_DEBUG 5 + #include "RdWebServer.h" #define MAX_CMDSTR_LEN 100 @@ -24,6 +26,8 @@ bool RdWebServer::init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder) { + printf("Here\r\n"); + RD_INFO("Here\r\n"); _port = port; _pStatusLed = pStatusLed; _pBaseWebFolder = pBaseWebFolder; @@ -184,6 +188,7 @@ RD_INFO("Requesting file %s\n\r", inFileName); +#ifdef SUPPORT_FOLDER_VIEW if ((strlen(inFileName) > 0) && (inFileName[strlen(inFileName)-1] == '/')) { RD_INFO("Request directory %s%s\r\n", _pBaseWebFolder, inFileName); @@ -209,6 +214,7 @@ client.send(httpHeader,strlen(httpHeader)); } else +#endif { sprintf(filename, "%s%s", _pBaseWebFolder, inFileName); RD_INFO("Filename %s\r\n", filename); @@ -258,6 +264,9 @@ void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection &client, char* httpHeader, bool bCacheIfPossible) { + +#ifdef SUPPORT_LOCAL_FILESYSTEM + const int HTTPD_MAX_FNAME_LENGTH = 127; char localFilename[HTTPD_MAX_FNAME_LENGTH+1]; char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1]; @@ -325,10 +334,21 @@ client.send_all(fileBuf, rdCnt); fclose(fp); } + +#else + + RD_WARN("Local file system not supported\r\n"); + sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); + client.send(httpHeader,strlen(httpHeader)); + client.send_all(inFileName,strlen(inFileName)); + +#endif } bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName) { +#ifdef SUPPORT_LOCAL_FILESYSTEM + RD_INFO("Reading into cache %s\n\r", fileName); LocalFileSystem local("local"); FILE* fp = fopen(fileName, "r"); @@ -376,6 +396,9 @@ RD_DBG("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt); _bCacheValid = true; return true; +#else + return false; +#endif } bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen)