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@2:9d8793c23b46, 2013-10-04 (annotated)
- Committer:
- Bobty
- Date:
- Fri Oct 04 07:41:28 2013 +0000
- Revision:
- 2:9d8793c23b46
- Parent:
- 1:75bb184de749
- Child:
- 3:594136d34a32
Initial Revision Working
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Bobty | 0:b5b4d07f7827 | 1 | #include "RdWebServer.h" |
Bobty | 0:b5b4d07f7827 | 2 | |
Bobty | 1:75bb184de749 | 3 | #define MAX_CMDSTR_LEN 100 |
Bobty | 1:75bb184de749 | 4 | #define MAX_ARGSTR_LEN 100 |
Bobty | 1:75bb184de749 | 5 | |
Bobty | 2:9d8793c23b46 | 6 | bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName) |
Bobty | 2:9d8793c23b46 | 7 | { |
Bobty | 2:9d8793c23b46 | 8 | printf("Reading into cache %s\n\r", fileName); |
Bobty | 2:9d8793c23b46 | 9 | LocalFileSystem local("local"); |
Bobty | 2:9d8793c23b46 | 10 | FILE* fp = fopen(fileName, "r"); |
Bobty | 2:9d8793c23b46 | 11 | if (fp == NULL) |
Bobty | 2:9d8793c23b46 | 12 | { |
Bobty | 2:9d8793c23b46 | 13 | printf("Failed to open file\n\r"); |
Bobty | 2:9d8793c23b46 | 14 | return false; |
Bobty | 2:9d8793c23b46 | 15 | } |
Bobty | 2:9d8793c23b46 | 16 | fseek(fp, 0, SEEK_END); |
Bobty | 2:9d8793c23b46 | 17 | _nFileLen = (int)ftell(fp); |
Bobty | 2:9d8793c23b46 | 18 | _pFileContent = new char[_nFileLen]; |
Bobty | 2:9d8793c23b46 | 19 | if (!_pFileContent) |
Bobty | 2:9d8793c23b46 | 20 | { |
Bobty | 2:9d8793c23b46 | 21 | printf("Failed to allocate %lu\n\r", _nFileLen); |
Bobty | 2:9d8793c23b46 | 22 | fclose(fp); |
Bobty | 2:9d8793c23b46 | 23 | return false; |
Bobty | 2:9d8793c23b46 | 24 | } |
Bobty | 2:9d8793c23b46 | 25 | fseek(fp, 0, SEEK_SET); |
Bobty | 2:9d8793c23b46 | 26 | char* pMem = _pFileContent; |
Bobty | 2:9d8793c23b46 | 27 | char fileBuf[500]; |
Bobty | 2:9d8793c23b46 | 28 | int totCnt = 0; |
Bobty | 2:9d8793c23b46 | 29 | int rdCnt; |
Bobty | 2:9d8793c23b46 | 30 | while ((rdCnt = fread(fileBuf, sizeof( char ), 500, fp)) == 500) |
Bobty | 2:9d8793c23b46 | 31 | { |
Bobty | 2:9d8793c23b46 | 32 | memcpy(pMem, fileBuf, rdCnt); |
Bobty | 2:9d8793c23b46 | 33 | pMem += rdCnt; |
Bobty | 2:9d8793c23b46 | 34 | totCnt += rdCnt; |
Bobty | 2:9d8793c23b46 | 35 | } |
Bobty | 2:9d8793c23b46 | 36 | memcpy(pMem, fileBuf, rdCnt); |
Bobty | 2:9d8793c23b46 | 37 | totCnt += rdCnt; |
Bobty | 2:9d8793c23b46 | 38 | fclose(fp); |
Bobty | 2:9d8793c23b46 | 39 | printf("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt); |
Bobty | 2:9d8793c23b46 | 40 | _bCacheValid = true; |
Bobty | 2:9d8793c23b46 | 41 | return true; |
Bobty | 2:9d8793c23b46 | 42 | } |
Bobty | 2:9d8793c23b46 | 43 | |
Bobty | 0:b5b4d07f7827 | 44 | RdWebServer::RdWebServer() |
Bobty | 0:b5b4d07f7827 | 45 | { |
Bobty | 0:b5b4d07f7827 | 46 | _serverIsListening = false; |
Bobty | 0:b5b4d07f7827 | 47 | _pStatusLed = NULL; |
Bobty | 0:b5b4d07f7827 | 48 | } |
Bobty | 0:b5b4d07f7827 | 49 | |
Bobty | 0:b5b4d07f7827 | 50 | RdWebServer::~RdWebServer() |
Bobty | 0:b5b4d07f7827 | 51 | { |
Bobty | 2:9d8793c23b46 | 52 | // Clean-up - probably never called as we're on a microcontroller! |
Bobty | 2:9d8793c23b46 | 53 | for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it) |
Bobty | 2:9d8793c23b46 | 54 | delete (*it); |
Bobty | 0:b5b4d07f7827 | 55 | } |
Bobty | 0:b5b4d07f7827 | 56 | |
Bobty | 0:b5b4d07f7827 | 57 | bool RdWebServer::init(int port, DigitalOut* pStatusLed) |
Bobty | 0:b5b4d07f7827 | 58 | { |
Bobty | 0:b5b4d07f7827 | 59 | _port = port; |
Bobty | 0:b5b4d07f7827 | 60 | _pStatusLed = pStatusLed; |
Bobty | 0:b5b4d07f7827 | 61 | |
Bobty | 0:b5b4d07f7827 | 62 | // _socketSrv.set_blocking(true); |
Bobty | 0:b5b4d07f7827 | 63 | |
Bobty | 0:b5b4d07f7827 | 64 | |
Bobty | 0:b5b4d07f7827 | 65 | //setup tcp socket |
Bobty | 0:b5b4d07f7827 | 66 | if(_socketSrv.bind(port)< 0) |
Bobty | 0:b5b4d07f7827 | 67 | { |
Bobty | 2:9d8793c23b46 | 68 | printf("TCP server bind fail\n\r"); |
Bobty | 0:b5b4d07f7827 | 69 | return false; |
Bobty | 0:b5b4d07f7827 | 70 | } |
Bobty | 0:b5b4d07f7827 | 71 | else |
Bobty | 0:b5b4d07f7827 | 72 | { |
Bobty | 2:9d8793c23b46 | 73 | // printf("TCP server bind success\n\r"); |
Bobty | 0:b5b4d07f7827 | 74 | _serverIsListening = true; |
Bobty | 0:b5b4d07f7827 | 75 | } |
Bobty | 0:b5b4d07f7827 | 76 | |
Bobty | 0:b5b4d07f7827 | 77 | if(_socketSrv.listen(1) < 0) |
Bobty | 0:b5b4d07f7827 | 78 | { |
Bobty | 2:9d8793c23b46 | 79 | printf("TCP server listen fail\n\r"); |
Bobty | 0:b5b4d07f7827 | 80 | return false; |
Bobty | 0:b5b4d07f7827 | 81 | } |
Bobty | 0:b5b4d07f7827 | 82 | else |
Bobty | 0:b5b4d07f7827 | 83 | { |
Bobty | 2:9d8793c23b46 | 84 | printf("TCP server is listening...\r\n"); |
Bobty | 0:b5b4d07f7827 | 85 | } |
Bobty | 0:b5b4d07f7827 | 86 | |
Bobty | 0:b5b4d07f7827 | 87 | return true; |
Bobty | 0:b5b4d07f7827 | 88 | } |
Bobty | 0:b5b4d07f7827 | 89 | |
Bobty | 1:75bb184de749 | 90 | bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen) |
Bobty | 1:75bb184de749 | 91 | { |
Bobty | 1:75bb184de749 | 92 | *pCmdStr = '\0'; |
Bobty | 1:75bb184de749 | 93 | *pArgStr = '\0'; |
Bobty | 1:75bb184de749 | 94 | int cmdStrLen = 0; |
Bobty | 1:75bb184de749 | 95 | int argStrLen = 0; |
Bobty | 1:75bb184de749 | 96 | if (buf == NULL) |
Bobty | 1:75bb184de749 | 97 | return false; |
Bobty | 1:75bb184de749 | 98 | char* pSlash1 = strchr(buf, '/'); |
Bobty | 1:75bb184de749 | 99 | if (pSlash1 == NULL) |
Bobty | 1:75bb184de749 | 100 | return false; |
Bobty | 1:75bb184de749 | 101 | pSlash1++; |
Bobty | 1:75bb184de749 | 102 | while(*pSlash1) |
Bobty | 1:75bb184de749 | 103 | { |
Bobty | 1:75bb184de749 | 104 | if (cmdStrLen >= maxCmdStrLen-1) |
Bobty | 1:75bb184de749 | 105 | break; |
Bobty | 1:75bb184de749 | 106 | if ((*pSlash1 == '/') || (*pSlash1 == ' ') || (*pSlash1 == '\n')) |
Bobty | 1:75bb184de749 | 107 | break; |
Bobty | 1:75bb184de749 | 108 | *pCmdStr++ = *pSlash1++; |
Bobty | 1:75bb184de749 | 109 | *pCmdStr = '\0'; |
Bobty | 1:75bb184de749 | 110 | cmdStrLen++; |
Bobty | 1:75bb184de749 | 111 | } |
Bobty | 1:75bb184de749 | 112 | if ((*pSlash1 == '\0') || (*pSlash1 == ' ') || (*pSlash1 == '\n')) |
Bobty | 1:75bb184de749 | 113 | return true; |
Bobty | 1:75bb184de749 | 114 | *pSlash1++; |
Bobty | 1:75bb184de749 | 115 | while(*pSlash1) |
Bobty | 1:75bb184de749 | 116 | { |
Bobty | 1:75bb184de749 | 117 | if (argStrLen >= maxArgStrLen-1) |
Bobty | 1:75bb184de749 | 118 | break; |
Bobty | 1:75bb184de749 | 119 | if ((*pSlash1 == ' ') || (*pSlash1 == '\n')) |
Bobty | 1:75bb184de749 | 120 | break; |
Bobty | 1:75bb184de749 | 121 | *pArgStr++ = *pSlash1++; |
Bobty | 1:75bb184de749 | 122 | *pArgStr = '\0'; |
Bobty | 1:75bb184de749 | 123 | argStrLen++; |
Bobty | 1:75bb184de749 | 124 | } |
Bobty | 1:75bb184de749 | 125 | return true; |
Bobty | 1:75bb184de749 | 126 | } |
Bobty | 2:9d8793c23b46 | 127 | |
Bobty | 2:9d8793c23b46 | 128 | void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection* pClient, char* httpHeader) |
Bobty | 2:9d8793c23b46 | 129 | { |
Bobty | 2:9d8793c23b46 | 130 | printf ("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen); |
Bobty | 2:9d8793c23b46 | 131 | sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); |
Bobty | 2:9d8793c23b46 | 132 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 133 | char* pMem = pCacheEntry->_pFileContent; |
Bobty | 2:9d8793c23b46 | 134 | int nLenLeft = pCacheEntry->_nFileLen; |
Bobty | 2:9d8793c23b46 | 135 | int blkSize = 2048; |
Bobty | 2:9d8793c23b46 | 136 | while(nLenLeft > 0) |
Bobty | 2:9d8793c23b46 | 137 | { |
Bobty | 2:9d8793c23b46 | 138 | if (blkSize > nLenLeft) |
Bobty | 2:9d8793c23b46 | 139 | blkSize = nLenLeft; |
Bobty | 2:9d8793c23b46 | 140 | pClient->send_all(pMem, blkSize); |
Bobty | 2:9d8793c23b46 | 141 | pMem += blkSize; |
Bobty | 2:9d8793c23b46 | 142 | nLenLeft -= blkSize; |
Bobty | 2:9d8793c23b46 | 143 | } |
Bobty | 2:9d8793c23b46 | 144 | } |
Bobty | 2:9d8793c23b46 | 145 | |
Bobty | 2:9d8793c23b46 | 146 | void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection* pClient, char* httpHeader, bool bCacheIfPossible) |
Bobty | 2:9d8793c23b46 | 147 | { |
Bobty | 2:9d8793c23b46 | 148 | const int HTTPD_MAX_FNAME_LENGTH = 127; |
Bobty | 2:9d8793c23b46 | 149 | char localFilename[HTTPD_MAX_FNAME_LENGTH+1]; |
Bobty | 2:9d8793c23b46 | 150 | char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1]; |
Bobty | 2:9d8793c23b46 | 151 | |
Bobty | 2:9d8793c23b46 | 152 | printf("Requesting local file %s\n\r", inFileName); |
Bobty | 2:9d8793c23b46 | 153 | sprintf(reqFileNameStr, "/%s", inFileName); |
Bobty | 2:9d8793c23b46 | 154 | sprintf(localFilename, "/local/%s", inFileName); |
Bobty | 2:9d8793c23b46 | 155 | |
Bobty | 2:9d8793c23b46 | 156 | if (bCacheIfPossible) |
Bobty | 2:9d8793c23b46 | 157 | { |
Bobty | 2:9d8793c23b46 | 158 | // Check if file already cached |
Bobty | 2:9d8793c23b46 | 159 | bool bTryToCache = true; |
Bobty | 2:9d8793c23b46 | 160 | for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it) |
Bobty | 2:9d8793c23b46 | 161 | { |
Bobty | 2:9d8793c23b46 | 162 | if (strcmp(inFileName, (*it)->_fileName) == 0) |
Bobty | 2:9d8793c23b46 | 163 | { |
Bobty | 2:9d8793c23b46 | 164 | if ((*it)->_bCacheValid) |
Bobty | 2:9d8793c23b46 | 165 | { |
Bobty | 2:9d8793c23b46 | 166 | sendFromCache(*it, pClient, httpHeader); |
Bobty | 2:9d8793c23b46 | 167 | return; |
Bobty | 2:9d8793c23b46 | 168 | } |
Bobty | 2:9d8793c23b46 | 169 | bTryToCache = false; // don't try to cache as cacheing must have already failed |
Bobty | 2:9d8793c23b46 | 170 | } |
Bobty | 2:9d8793c23b46 | 171 | } |
Bobty | 2:9d8793c23b46 | 172 | |
Bobty | 2:9d8793c23b46 | 173 | // See if we can cache the file |
Bobty | 2:9d8793c23b46 | 174 | if (bTryToCache) |
Bobty | 2:9d8793c23b46 | 175 | { |
Bobty | 2:9d8793c23b46 | 176 | RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName); |
Bobty | 2:9d8793c23b46 | 177 | if (pCacheEntry) |
Bobty | 2:9d8793c23b46 | 178 | { |
Bobty | 2:9d8793c23b46 | 179 | bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename); |
Bobty | 2:9d8793c23b46 | 180 | // Store the cache entry even if reading failed (mem alloc or file not found, etc) so we don't try to cache again |
Bobty | 2:9d8793c23b46 | 181 | _cachedFiles.push_back(pCacheEntry); |
Bobty | 2:9d8793c23b46 | 182 | if (bCacheSuccess) |
Bobty | 2:9d8793c23b46 | 183 | { |
Bobty | 2:9d8793c23b46 | 184 | sendFromCache(pCacheEntry, pClient, httpHeader); |
Bobty | 2:9d8793c23b46 | 185 | return; |
Bobty | 2:9d8793c23b46 | 186 | } |
Bobty | 2:9d8793c23b46 | 187 | } |
Bobty | 2:9d8793c23b46 | 188 | } |
Bobty | 2:9d8793c23b46 | 189 | } |
Bobty | 2:9d8793c23b46 | 190 | |
Bobty | 2:9d8793c23b46 | 191 | LocalFileSystem local("local"); |
Bobty | 2:9d8793c23b46 | 192 | |
Bobty | 2:9d8793c23b46 | 193 | FILE* fp = fopen(localFilename, "r"); |
Bobty | 2:9d8793c23b46 | 194 | if (fp == NULL) |
Bobty | 2:9d8793c23b46 | 195 | { |
Bobty | 2:9d8793c23b46 | 196 | printf ("Local file %s not found\r\n", localFilename); |
Bobty | 2:9d8793c23b46 | 197 | sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); |
Bobty | 2:9d8793c23b46 | 198 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 199 | pClient->send(reqFileNameStr,strlen(reqFileNameStr)); |
Bobty | 2:9d8793c23b46 | 200 | } |
Bobty | 2:9d8793c23b46 | 201 | else |
Bobty | 2:9d8793c23b46 | 202 | { |
Bobty | 2:9d8793c23b46 | 203 | printf ("Sending file %s from disk\r\n", localFilename); |
Bobty | 2:9d8793c23b46 | 204 | sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); |
Bobty | 2:9d8793c23b46 | 205 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 206 | int rdCnt = 0; |
Bobty | 2:9d8793c23b46 | 207 | char fileBuf[2000]; |
Bobty | 2:9d8793c23b46 | 208 | while ((rdCnt = fread(fileBuf, sizeof( char ), 2000, fp)) == 2000) |
Bobty | 2:9d8793c23b46 | 209 | { |
Bobty | 2:9d8793c23b46 | 210 | pClient->send_all(fileBuf, rdCnt); |
Bobty | 2:9d8793c23b46 | 211 | } |
Bobty | 2:9d8793c23b46 | 212 | pClient->send_all(fileBuf, rdCnt); |
Bobty | 2:9d8793c23b46 | 213 | fclose(fp); |
Bobty | 2:9d8793c23b46 | 214 | } |
Bobty | 2:9d8793c23b46 | 215 | } |
Bobty | 2:9d8793c23b46 | 216 | |
Bobty | 2:9d8793c23b46 | 217 | void RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection* pClient, char* httpHeader) |
Bobty | 2:9d8793c23b46 | 218 | { |
Bobty | 2:9d8793c23b46 | 219 | const int HTTPD_MAX_FNAME_LENGTH = 127; |
Bobty | 2:9d8793c23b46 | 220 | char filename[HTTPD_MAX_FNAME_LENGTH+1]; |
Bobty | 2:9d8793c23b46 | 221 | |
Bobty | 2:9d8793c23b46 | 222 | printf("Requesting file %s\n\r", inFileName); |
Bobty | 2:9d8793c23b46 | 223 | |
Bobty | 2:9d8793c23b46 | 224 | char *lstchr = strrchr(inFileName, NULL) -1; |
Bobty | 2:9d8793c23b46 | 225 | if ('/' == *lstchr) |
Bobty | 2:9d8793c23b46 | 226 | { |
Bobty | 2:9d8793c23b46 | 227 | // printf("Open directory /sd/%s\n", inFileName); |
Bobty | 2:9d8793c23b46 | 228 | *lstchr = 0; |
Bobty | 2:9d8793c23b46 | 229 | sprintf(filename, "/sd/%s", inFileName); |
Bobty | 2:9d8793c23b46 | 230 | DIR *d = opendir(filename); |
Bobty | 2:9d8793c23b46 | 231 | if (d != NULL) { |
Bobty | 2:9d8793c23b46 | 232 | sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); |
Bobty | 2:9d8793c23b46 | 233 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 234 | sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName); |
Bobty | 2:9d8793c23b46 | 235 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 236 | struct dirent *p; |
Bobty | 2:9d8793c23b46 | 237 | while((p = readdir(d)) != NULL) { |
Bobty | 2:9d8793c23b46 | 238 | // printf("%s\n", p->d_name); |
Bobty | 2:9d8793c23b46 | 239 | sprintf(httpHeader,"<li>%s</li>", p->d_name); |
Bobty | 2:9d8793c23b46 | 240 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 241 | } |
Bobty | 2:9d8793c23b46 | 242 | } |
Bobty | 2:9d8793c23b46 | 243 | closedir(d); |
Bobty | 2:9d8793c23b46 | 244 | // printf("Directory closed\n"); |
Bobty | 2:9d8793c23b46 | 245 | sprintf(httpHeader,"</ul></body></html>"); |
Bobty | 2:9d8793c23b46 | 246 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 247 | } |
Bobty | 2:9d8793c23b46 | 248 | else |
Bobty | 2:9d8793c23b46 | 249 | { |
Bobty | 2:9d8793c23b46 | 250 | sprintf(filename, "/sd/%s", inFileName); |
Bobty | 2:9d8793c23b46 | 251 | // printf ("Filename %s\r\n", filename); |
Bobty | 2:9d8793c23b46 | 252 | FILE* fp = fopen(filename, "r"); |
Bobty | 2:9d8793c23b46 | 253 | if (fp == NULL) |
Bobty | 2:9d8793c23b46 | 254 | { |
Bobty | 2:9d8793c23b46 | 255 | printf ("Filename %s not found\r\n", filename); |
Bobty | 2:9d8793c23b46 | 256 | sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); |
Bobty | 2:9d8793c23b46 | 257 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 258 | pClient->send(inFileName,strlen(inFileName)); |
Bobty | 2:9d8793c23b46 | 259 | } |
Bobty | 2:9d8793c23b46 | 260 | else |
Bobty | 2:9d8793c23b46 | 261 | { |
Bobty | 2:9d8793c23b46 | 262 | printf ("Sending file %s\r\n", filename); |
Bobty | 2:9d8793c23b46 | 263 | sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n"); |
Bobty | 2:9d8793c23b46 | 264 | pClient->send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 265 | int rdCnt = 0; |
Bobty | 2:9d8793c23b46 | 266 | char fileBuf[1024]; |
Bobty | 2:9d8793c23b46 | 267 | while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024) |
Bobty | 2:9d8793c23b46 | 268 | { |
Bobty | 2:9d8793c23b46 | 269 | pClient->send(fileBuf, rdCnt); |
Bobty | 2:9d8793c23b46 | 270 | } |
Bobty | 2:9d8793c23b46 | 271 | pClient->send(fileBuf, rdCnt); |
Bobty | 2:9d8793c23b46 | 272 | fclose(fp); |
Bobty | 2:9d8793c23b46 | 273 | } |
Bobty | 2:9d8793c23b46 | 274 | } |
Bobty | 2:9d8793c23b46 | 275 | } |
Bobty | 2:9d8793c23b46 | 276 | |
Bobty | 0:b5b4d07f7827 | 277 | void RdWebServer::run() |
Bobty | 0:b5b4d07f7827 | 278 | { |
Bobty | 0:b5b4d07f7827 | 279 | TCPSocketConnection client; |
Bobty | 2:9d8793c23b46 | 280 | const int HTTPD_MAX_HDR_LENGTH = 255; |
Bobty | 2:9d8793c23b46 | 281 | char httpHeader[HTTPD_MAX_HDR_LENGTH+1]; |
Bobty | 2:9d8793c23b46 | 282 | const int HTTPD_MAX_REQ_LENGTH = 1023; |
Bobty | 2:9d8793c23b46 | 283 | char buffer[HTTPD_MAX_REQ_LENGTH+1]; |
Bobty | 2:9d8793c23b46 | 284 | |
Bobty | 0:b5b4d07f7827 | 285 | //listening for http GET request |
Bobty | 2:9d8793c23b46 | 286 | while (isListening()) |
Bobty | 0:b5b4d07f7827 | 287 | { |
Bobty | 0:b5b4d07f7827 | 288 | //blocking mode(never timeout) |
Bobty | 0:b5b4d07f7827 | 289 | if(_socketSrv.accept(client)<0) |
Bobty | 0:b5b4d07f7827 | 290 | { |
Bobty | 2:9d8793c23b46 | 291 | printf("TCP Socket failed to accept connection\n\r"); |
Bobty | 0:b5b4d07f7827 | 292 | } |
Bobty | 0:b5b4d07f7827 | 293 | else |
Bobty | 0:b5b4d07f7827 | 294 | { |
Bobty | 2:9d8793c23b46 | 295 | client.set_blocking(false, 1000); |
Bobty | 2:9d8793c23b46 | 296 | printf("Connection from IP: %s\n\r",client.get_address()); |
Bobty | 0:b5b4d07f7827 | 297 | if (_pStatusLed != NULL) |
Bobty | 0:b5b4d07f7827 | 298 | *_pStatusLed = true; |
Bobty | 2:9d8793c23b46 | 299 | Timer connectLimitTimer; |
Bobty | 2:9d8793c23b46 | 300 | connectLimitTimer.start(); |
Bobty | 0:b5b4d07f7827 | 301 | |
Bobty | 2:9d8793c23b46 | 302 | while(connectLimitTimer.read() < 5) // 5 seconds timeout on HTTP operation |
Bobty | 0:b5b4d07f7827 | 303 | { |
Bobty | 2:9d8793c23b46 | 304 | int rxLen = client.receive(buffer, 1023); |
Bobty | 2:9d8793c23b46 | 305 | if (rxLen == -1) |
Bobty | 2:9d8793c23b46 | 306 | { |
Bobty | 2:9d8793c23b46 | 307 | continue; |
Bobty | 2:9d8793c23b46 | 308 | } |
Bobty | 2:9d8793c23b46 | 309 | else if (rxLen == 0) |
Bobty | 2:9d8793c23b46 | 310 | { |
Bobty | 2:9d8793c23b46 | 311 | printf("received buffer is empty.\n\r"); |
Bobty | 2:9d8793c23b46 | 312 | break; |
Bobty | 2:9d8793c23b46 | 313 | } |
Bobty | 2:9d8793c23b46 | 314 | else if (rxLen >= 1024) |
Bobty | 0:b5b4d07f7827 | 315 | { |
Bobty | 2:9d8793c23b46 | 316 | sprintf(httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n"); |
Bobty | 2:9d8793c23b46 | 317 | client.send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 318 | client.send(buffer, rxLen); |
Bobty | 2:9d8793c23b46 | 319 | break; |
Bobty | 2:9d8793c23b46 | 320 | } |
Bobty | 2:9d8793c23b46 | 321 | buffer[rxLen] = '\0'; |
Bobty | 2:9d8793c23b46 | 322 | // printf("Received Data: %d\n\r\n\r%.*s\n\r",strlen(buffer),strlen(buffer),buffer); |
Bobty | 2:9d8793c23b46 | 323 | if (strncmp(buffer, "GET ", 4) == 0) |
Bobty | 2:9d8793c23b46 | 324 | { |
Bobty | 2:9d8793c23b46 | 325 | // printf("GET request incomming.\n\r"); |
Bobty | 2:9d8793c23b46 | 326 | char cmdStr[MAX_CMDSTR_LEN]; |
Bobty | 2:9d8793c23b46 | 327 | char argStr[MAX_ARGSTR_LEN]; |
Bobty | 2:9d8793c23b46 | 328 | if (extractCmdArgs(buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN)) |
Bobty | 2:9d8793c23b46 | 329 | { |
Bobty | 2:9d8793c23b46 | 330 | printf("CmdStr %s\n\r", cmdStr); |
Bobty | 2:9d8793c23b46 | 331 | printf("ArgStr %s\n\r", argStr); |
Bobty | 2:9d8793c23b46 | 332 | bool cmdFound = false; |
Bobty | 2:9d8793c23b46 | 333 | for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it) |
Bobty | 0:b5b4d07f7827 | 334 | { |
Bobty | 2:9d8793c23b46 | 335 | // printf("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr); |
Bobty | 2:9d8793c23b46 | 336 | if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0) |
Bobty | 2:9d8793c23b46 | 337 | { |
Bobty | 2:9d8793c23b46 | 338 | printf("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType); |
Bobty | 2:9d8793c23b46 | 339 | cmdFound = true; |
Bobty | 2:9d8793c23b46 | 340 | if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK) |
Bobty | 1:75bb184de749 | 341 | { |
Bobty | 2:9d8793c23b46 | 342 | ((*it)->_callback)(cmdStr, argStr); |
Bobty | 2:9d8793c23b46 | 343 | } |
Bobty | 2:9d8793c23b46 | 344 | else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE) |
Bobty | 2:9d8793c23b46 | 345 | { |
Bobty | 2:9d8793c23b46 | 346 | if ((*it)->_substFileName[0] != '\0') |
Bobty | 2:9d8793c23b46 | 347 | handleLocalFileRequest((*it)->_substFileName, argStr, &client, httpHeader, (*it)->_bCacheIfPossible); |
Bobty | 2:9d8793c23b46 | 348 | else |
Bobty | 2:9d8793c23b46 | 349 | handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, (*it)->_bCacheIfPossible); |
Bobty | 1:75bb184de749 | 350 | } |
Bobty | 2:9d8793c23b46 | 351 | else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDCARDFILE) |
Bobty | 2:9d8793c23b46 | 352 | { |
Bobty | 2:9d8793c23b46 | 353 | if ((*it)->_substFileName[0] != '\0') |
Bobty | 2:9d8793c23b46 | 354 | handleSDFileRequest((*it)->_substFileName, argStr, &client, httpHeader); |
Bobty | 2:9d8793c23b46 | 355 | else |
Bobty | 2:9d8793c23b46 | 356 | handleSDFileRequest(cmdStr, argStr, &client, httpHeader); |
Bobty | 2:9d8793c23b46 | 357 | } |
Bobty | 2:9d8793c23b46 | 358 | break; |
Bobty | 1:75bb184de749 | 359 | } |
Bobty | 0:b5b4d07f7827 | 360 | } |
Bobty | 2:9d8793c23b46 | 361 | // If command not found see if it is a local file |
Bobty | 2:9d8793c23b46 | 362 | if (!cmdFound) |
Bobty | 2:9d8793c23b46 | 363 | handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, false); |
Bobty | 2:9d8793c23b46 | 364 | } |
Bobty | 2:9d8793c23b46 | 365 | |
Bobty | 2:9d8793c23b46 | 366 | //setup http response header & data |
Bobty | 2:9d8793c23b46 | 367 | /* char httpHeader[256] = {}; |
Bobty | 2:9d8793c23b46 | 368 | sprintf(httpHeader,"HTTP/1.1 200 OK\n\rContent-Length: %d\n\rContent-Type: text\n\rConnection: Close\n\r\n\r",strlen(buffer)); |
Bobty | 2:9d8793c23b46 | 369 | client.send(httpHeader,strlen(httpHeader)); |
Bobty | 2:9d8793c23b46 | 370 | client.send(cmdStr,strlen(cmdStr)); */ |
Bobty | 2:9d8793c23b46 | 371 | //clientIsConnected = false; |
Bobty | 2:9d8793c23b46 | 372 | // printf("Server done.\n\r"); |
Bobty | 2:9d8793c23b46 | 373 | break; |
Bobty | 0:b5b4d07f7827 | 374 | } |
Bobty | 2:9d8793c23b46 | 375 | |
Bobty | 0:b5b4d07f7827 | 376 | } |
Bobty | 2:9d8793c23b46 | 377 | printf("Connection closed ... TCP server is listening...\r\n"); |
Bobty | 0:b5b4d07f7827 | 378 | client.close(); |
Bobty | 0:b5b4d07f7827 | 379 | if (_pStatusLed != NULL) |
Bobty | 0:b5b4d07f7827 | 380 | *_pStatusLed = false; |
Bobty | 0:b5b4d07f7827 | 381 | } |
Bobty | 0:b5b4d07f7827 | 382 | } |
Bobty | 0:b5b4d07f7827 | 383 | } |
Bobty | 0:b5b4d07f7827 | 384 | |
Bobty | 2:9d8793c23b46 | 385 | void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible) |
Bobty | 1:75bb184de749 | 386 | { |
Bobty | 2:9d8793c23b46 | 387 | _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible)); |
Bobty | 1:75bb184de749 | 388 | } |
Bobty | 1:75bb184de749 | 389 |