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.

Committer:
Bobty
Date:
Mon Feb 02 16:36:14 2015 +0000
Revision:
4:6afb3bbf20a4
Parent:
3:594136d34a32
Child:
5:e6286b529d6b
Updated to use SD or USB

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Bobty 3:594136d34a32 1 /* RdWebServer.cpp
Bobty 3:594136d34a32 2 Rob Dobson 2013
Bobty 3:594136d34a32 3 Inspired by Jasper Schuurmans multi-threaded web server for Netduino http://www.schuurmans.cc/multi-threaded-web-server-for-netduino-plus
Bobty 3:594136d34a32 4 More details at http://robdobson.com/2013/10/moving-my-window-shades-control-to-mbed/
Bobty 3:594136d34a32 5 */
Bobty 3:594136d34a32 6
Bobty 0:b5b4d07f7827 7 #include "RdWebServer.h"
Bobty 0:b5b4d07f7827 8
Bobty 1:75bb184de749 9 #define MAX_CMDSTR_LEN 100
Bobty 1:75bb184de749 10 #define MAX_ARGSTR_LEN 100
Bobty 1:75bb184de749 11
Bobty 2:9d8793c23b46 12 bool RdFileCacheEntry::readLocalFileIntoCache(char* fileName)
Bobty 2:9d8793c23b46 13 {
Bobty 2:9d8793c23b46 14 printf("Reading into cache %s\n\r", fileName);
Bobty 2:9d8793c23b46 15 LocalFileSystem local("local");
Bobty 2:9d8793c23b46 16 FILE* fp = fopen(fileName, "r");
Bobty 2:9d8793c23b46 17 if (fp == NULL)
Bobty 2:9d8793c23b46 18 {
Bobty 2:9d8793c23b46 19 printf("Failed to open file\n\r");
Bobty 2:9d8793c23b46 20 return false;
Bobty 2:9d8793c23b46 21 }
Bobty 4:6afb3bbf20a4 22 printf("Seeking\n\r");
Bobty 2:9d8793c23b46 23 fseek(fp, 0, SEEK_END);
Bobty 2:9d8793c23b46 24 _nFileLen = (int)ftell(fp);
Bobty 2:9d8793c23b46 25 _pFileContent = new char[_nFileLen];
Bobty 4:6afb3bbf20a4 26 printf("Len %d Buf %08x\n\r", _nFileLen, _pFileContent);
Bobty 2:9d8793c23b46 27 if (!_pFileContent)
Bobty 2:9d8793c23b46 28 {
Bobty 2:9d8793c23b46 29 printf("Failed to allocate %lu\n\r", _nFileLen);
Bobty 2:9d8793c23b46 30 fclose(fp);
Bobty 2:9d8793c23b46 31 return false;
Bobty 2:9d8793c23b46 32 }
Bobty 4:6afb3bbf20a4 33 printf("Allocated\n\r");
Bobty 4:6afb3bbf20a4 34 memset(_pFileContent, 0, _nFileLen);
Bobty 2:9d8793c23b46 35 fseek(fp, 0, SEEK_SET);
Bobty 2:9d8793c23b46 36 char* pMem = _pFileContent;
Bobty 4:6afb3bbf20a4 37 char fileBuf[100];
Bobty 2:9d8793c23b46 38 int totCnt = 0;
Bobty 2:9d8793c23b46 39 int rdCnt;
Bobty 4:6afb3bbf20a4 40 printf("Reading\n\r");
Bobty 4:6afb3bbf20a4 41 while (true)
Bobty 2:9d8793c23b46 42 {
Bobty 4:6afb3bbf20a4 43 int toRead = _nFileLen - totCnt;
Bobty 4:6afb3bbf20a4 44 if (toRead > sizeof(fileBuf))
Bobty 4:6afb3bbf20a4 45 toRead = sizeof(fileBuf);
Bobty 4:6afb3bbf20a4 46 if (toRead <= 0)
Bobty 4:6afb3bbf20a4 47 break;
Bobty 4:6afb3bbf20a4 48 rdCnt = fread(fileBuf, sizeof(char), toRead, fp);
Bobty 4:6afb3bbf20a4 49 if (rdCnt <= 0)
Bobty 4:6afb3bbf20a4 50 break;
Bobty 4:6afb3bbf20a4 51 printf("Read %d tot %d of %d\n\r", rdCnt, totCnt, _nFileLen);
Bobty 2:9d8793c23b46 52 memcpy(pMem, fileBuf, rdCnt);
Bobty 2:9d8793c23b46 53 pMem += rdCnt;
Bobty 2:9d8793c23b46 54 totCnt += rdCnt;
Bobty 2:9d8793c23b46 55 }
Bobty 4:6afb3bbf20a4 56 printf("Done read\n\r");
Bobty 2:9d8793c23b46 57 fclose(fp);
Bobty 2:9d8793c23b46 58 printf("Success in caching %d bytes (read %d)\n\r", _nFileLen, totCnt);
Bobty 2:9d8793c23b46 59 _bCacheValid = true;
Bobty 2:9d8793c23b46 60 return true;
Bobty 2:9d8793c23b46 61 }
Bobty 2:9d8793c23b46 62
Bobty 0:b5b4d07f7827 63 RdWebServer::RdWebServer()
Bobty 0:b5b4d07f7827 64 {
Bobty 0:b5b4d07f7827 65 _serverIsListening = false;
Bobty 0:b5b4d07f7827 66 _pStatusLed = NULL;
Bobty 0:b5b4d07f7827 67 }
Bobty 0:b5b4d07f7827 68
Bobty 0:b5b4d07f7827 69 RdWebServer::~RdWebServer()
Bobty 0:b5b4d07f7827 70 {
Bobty 2:9d8793c23b46 71 // Clean-up - probably never called as we're on a microcontroller!
Bobty 2:9d8793c23b46 72 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 2:9d8793c23b46 73 delete (*it);
Bobty 0:b5b4d07f7827 74 }
Bobty 0:b5b4d07f7827 75
Bobty 4:6afb3bbf20a4 76 bool RdWebServer::init(int port, DigitalOut* pStatusLed, char* pBaseWebFolder)
Bobty 0:b5b4d07f7827 77 {
Bobty 0:b5b4d07f7827 78 _port = port;
Bobty 0:b5b4d07f7827 79 _pStatusLed = pStatusLed;
Bobty 4:6afb3bbf20a4 80 _pBaseWebFolder = pBaseWebFolder;
Bobty 0:b5b4d07f7827 81
Bobty 0:b5b4d07f7827 82 // _socketSrv.set_blocking(true);
Bobty 0:b5b4d07f7827 83
Bobty 0:b5b4d07f7827 84
Bobty 0:b5b4d07f7827 85 //setup tcp socket
Bobty 0:b5b4d07f7827 86 if(_socketSrv.bind(port)< 0)
Bobty 0:b5b4d07f7827 87 {
Bobty 2:9d8793c23b46 88 printf("TCP server bind fail\n\r");
Bobty 0:b5b4d07f7827 89 return false;
Bobty 0:b5b4d07f7827 90 }
Bobty 0:b5b4d07f7827 91 else
Bobty 0:b5b4d07f7827 92 {
Bobty 2:9d8793c23b46 93 // printf("TCP server bind success\n\r");
Bobty 0:b5b4d07f7827 94 _serverIsListening = true;
Bobty 0:b5b4d07f7827 95 }
Bobty 0:b5b4d07f7827 96
Bobty 0:b5b4d07f7827 97 if(_socketSrv.listen(1) < 0)
Bobty 0:b5b4d07f7827 98 {
Bobty 2:9d8793c23b46 99 printf("TCP server listen fail\n\r");
Bobty 0:b5b4d07f7827 100 return false;
Bobty 0:b5b4d07f7827 101 }
Bobty 0:b5b4d07f7827 102 else
Bobty 0:b5b4d07f7827 103 {
Bobty 2:9d8793c23b46 104 printf("TCP server is listening...\r\n");
Bobty 0:b5b4d07f7827 105 }
Bobty 0:b5b4d07f7827 106
Bobty 0:b5b4d07f7827 107 return true;
Bobty 0:b5b4d07f7827 108 }
Bobty 0:b5b4d07f7827 109
Bobty 1:75bb184de749 110 bool RdWebServer::extractCmdArgs(char* buf, char* pCmdStr, int maxCmdStrLen, char* pArgStr, int maxArgStrLen)
Bobty 1:75bb184de749 111 {
Bobty 1:75bb184de749 112 *pCmdStr = '\0';
Bobty 1:75bb184de749 113 *pArgStr = '\0';
Bobty 1:75bb184de749 114 int cmdStrLen = 0;
Bobty 1:75bb184de749 115 int argStrLen = 0;
Bobty 1:75bb184de749 116 if (buf == NULL)
Bobty 1:75bb184de749 117 return false;
Bobty 1:75bb184de749 118 char* pSlash1 = strchr(buf, '/');
Bobty 1:75bb184de749 119 if (pSlash1 == NULL)
Bobty 1:75bb184de749 120 return false;
Bobty 1:75bb184de749 121 pSlash1++;
Bobty 1:75bb184de749 122 while(*pSlash1)
Bobty 1:75bb184de749 123 {
Bobty 1:75bb184de749 124 if (cmdStrLen >= maxCmdStrLen-1)
Bobty 1:75bb184de749 125 break;
Bobty 1:75bb184de749 126 if ((*pSlash1 == '/') || (*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 127 break;
Bobty 1:75bb184de749 128 *pCmdStr++ = *pSlash1++;
Bobty 1:75bb184de749 129 *pCmdStr = '\0';
Bobty 1:75bb184de749 130 cmdStrLen++;
Bobty 1:75bb184de749 131 }
Bobty 1:75bb184de749 132 if ((*pSlash1 == '\0') || (*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 133 return true;
Bobty 1:75bb184de749 134 *pSlash1++;
Bobty 1:75bb184de749 135 while(*pSlash1)
Bobty 1:75bb184de749 136 {
Bobty 1:75bb184de749 137 if (argStrLen >= maxArgStrLen-1)
Bobty 1:75bb184de749 138 break;
Bobty 1:75bb184de749 139 if ((*pSlash1 == ' ') || (*pSlash1 == '\n'))
Bobty 1:75bb184de749 140 break;
Bobty 1:75bb184de749 141 *pArgStr++ = *pSlash1++;
Bobty 1:75bb184de749 142 *pArgStr = '\0';
Bobty 1:75bb184de749 143 argStrLen++;
Bobty 1:75bb184de749 144 }
Bobty 1:75bb184de749 145 return true;
Bobty 1:75bb184de749 146 }
Bobty 2:9d8793c23b46 147
Bobty 2:9d8793c23b46 148 void RdWebServer::sendFromCache(RdFileCacheEntry* pCacheEntry, TCPSocketConnection* pClient, char* httpHeader)
Bobty 2:9d8793c23b46 149 {
Bobty 2:9d8793c23b46 150 printf ("Sending file %s from cache %d bytes\r\n", pCacheEntry->_fileName, pCacheEntry->_nFileLen);
Bobty 2:9d8793c23b46 151 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 2:9d8793c23b46 152 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 153 char* pMem = pCacheEntry->_pFileContent;
Bobty 2:9d8793c23b46 154 int nLenLeft = pCacheEntry->_nFileLen;
Bobty 2:9d8793c23b46 155 int blkSize = 2048;
Bobty 2:9d8793c23b46 156 while(nLenLeft > 0)
Bobty 2:9d8793c23b46 157 {
Bobty 2:9d8793c23b46 158 if (blkSize > nLenLeft)
Bobty 2:9d8793c23b46 159 blkSize = nLenLeft;
Bobty 2:9d8793c23b46 160 pClient->send_all(pMem, blkSize);
Bobty 2:9d8793c23b46 161 pMem += blkSize;
Bobty 2:9d8793c23b46 162 nLenLeft -= blkSize;
Bobty 2:9d8793c23b46 163 }
Bobty 2:9d8793c23b46 164 }
Bobty 2:9d8793c23b46 165
Bobty 2:9d8793c23b46 166 void RdWebServer::handleLocalFileRequest(char* inFileName, char* argStr, TCPSocketConnection* pClient, char* httpHeader, bool bCacheIfPossible)
Bobty 2:9d8793c23b46 167 {
Bobty 2:9d8793c23b46 168 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 2:9d8793c23b46 169 char localFilename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 2:9d8793c23b46 170 char reqFileNameStr[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 2:9d8793c23b46 171
Bobty 2:9d8793c23b46 172 printf("Requesting local file %s\n\r", inFileName);
Bobty 2:9d8793c23b46 173 sprintf(reqFileNameStr, "/%s", inFileName);
Bobty 2:9d8793c23b46 174 sprintf(localFilename, "/local/%s", inFileName);
Bobty 2:9d8793c23b46 175
Bobty 2:9d8793c23b46 176 if (bCacheIfPossible)
Bobty 2:9d8793c23b46 177 {
Bobty 2:9d8793c23b46 178 // Check if file already cached
Bobty 2:9d8793c23b46 179 bool bTryToCache = true;
Bobty 2:9d8793c23b46 180 for (std::vector<RdFileCacheEntry*>::iterator it = _cachedFiles.begin() ; it != _cachedFiles.end(); ++it)
Bobty 2:9d8793c23b46 181 {
Bobty 2:9d8793c23b46 182 if (strcmp(inFileName, (*it)->_fileName) == 0)
Bobty 2:9d8793c23b46 183 {
Bobty 2:9d8793c23b46 184 if ((*it)->_bCacheValid)
Bobty 2:9d8793c23b46 185 {
Bobty 2:9d8793c23b46 186 sendFromCache(*it, pClient, httpHeader);
Bobty 2:9d8793c23b46 187 return;
Bobty 2:9d8793c23b46 188 }
Bobty 2:9d8793c23b46 189 bTryToCache = false; // don't try to cache as cacheing must have already failed
Bobty 2:9d8793c23b46 190 }
Bobty 2:9d8793c23b46 191 }
Bobty 2:9d8793c23b46 192
Bobty 2:9d8793c23b46 193 // See if we can cache the file
Bobty 2:9d8793c23b46 194 if (bTryToCache)
Bobty 2:9d8793c23b46 195 {
Bobty 2:9d8793c23b46 196 RdFileCacheEntry* pCacheEntry = new RdFileCacheEntry(inFileName);
Bobty 2:9d8793c23b46 197 if (pCacheEntry)
Bobty 2:9d8793c23b46 198 {
Bobty 2:9d8793c23b46 199 bool bCacheSuccess = pCacheEntry->readLocalFileIntoCache(localFilename);
Bobty 2:9d8793c23b46 200 // 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 201 _cachedFiles.push_back(pCacheEntry);
Bobty 2:9d8793c23b46 202 if (bCacheSuccess)
Bobty 2:9d8793c23b46 203 {
Bobty 2:9d8793c23b46 204 sendFromCache(pCacheEntry, pClient, httpHeader);
Bobty 2:9d8793c23b46 205 return;
Bobty 2:9d8793c23b46 206 }
Bobty 2:9d8793c23b46 207 }
Bobty 2:9d8793c23b46 208 }
Bobty 2:9d8793c23b46 209 }
Bobty 2:9d8793c23b46 210
Bobty 2:9d8793c23b46 211 LocalFileSystem local("local");
Bobty 2:9d8793c23b46 212
Bobty 2:9d8793c23b46 213 FILE* fp = fopen(localFilename, "r");
Bobty 2:9d8793c23b46 214 if (fp == NULL)
Bobty 2:9d8793c23b46 215 {
Bobty 2:9d8793c23b46 216 printf ("Local file %s not found\r\n", localFilename);
Bobty 2:9d8793c23b46 217 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 2:9d8793c23b46 218 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 219 pClient->send(reqFileNameStr,strlen(reqFileNameStr));
Bobty 2:9d8793c23b46 220 }
Bobty 2:9d8793c23b46 221 else
Bobty 2:9d8793c23b46 222 {
Bobty 2:9d8793c23b46 223 printf ("Sending file %s from disk\r\n", localFilename);
Bobty 2:9d8793c23b46 224 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 2:9d8793c23b46 225 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 226 int rdCnt = 0;
Bobty 2:9d8793c23b46 227 char fileBuf[2000];
Bobty 2:9d8793c23b46 228 while ((rdCnt = fread(fileBuf, sizeof( char ), 2000, fp)) == 2000)
Bobty 2:9d8793c23b46 229 {
Bobty 2:9d8793c23b46 230 pClient->send_all(fileBuf, rdCnt);
Bobty 2:9d8793c23b46 231 }
Bobty 2:9d8793c23b46 232 pClient->send_all(fileBuf, rdCnt);
Bobty 2:9d8793c23b46 233 fclose(fp);
Bobty 2:9d8793c23b46 234 }
Bobty 2:9d8793c23b46 235 }
Bobty 2:9d8793c23b46 236
Bobty 2:9d8793c23b46 237 void RdWebServer::handleSDFileRequest(char* inFileName, char* argStr, TCPSocketConnection* pClient, char* httpHeader)
Bobty 2:9d8793c23b46 238 {
Bobty 2:9d8793c23b46 239 const int HTTPD_MAX_FNAME_LENGTH = 127;
Bobty 2:9d8793c23b46 240 char filename[HTTPD_MAX_FNAME_LENGTH+1];
Bobty 2:9d8793c23b46 241
Bobty 2:9d8793c23b46 242 printf("Requesting file %s\n\r", inFileName);
Bobty 2:9d8793c23b46 243
Bobty 2:9d8793c23b46 244 char *lstchr = strrchr(inFileName, NULL) -1;
Bobty 2:9d8793c23b46 245 if ('/' == *lstchr)
Bobty 2:9d8793c23b46 246 {
Bobty 4:6afb3bbf20a4 247 printf("Request file %s%s\n", _pBaseWebFolder, inFileName);
Bobty 2:9d8793c23b46 248 *lstchr = 0;
Bobty 4:6afb3bbf20a4 249 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 2:9d8793c23b46 250 DIR *d = opendir(filename);
Bobty 2:9d8793c23b46 251 if (d != NULL) {
Bobty 2:9d8793c23b46 252 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 2:9d8793c23b46 253 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 254 sprintf(httpHeader,"<html><head><title>Directory Listing</title></head><body><h1>%s</h1><ul>", inFileName);
Bobty 2:9d8793c23b46 255 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 256 struct dirent *p;
Bobty 2:9d8793c23b46 257 while((p = readdir(d)) != NULL) {
Bobty 4:6afb3bbf20a4 258 printf("%s\n", p->d_name);
Bobty 2:9d8793c23b46 259 sprintf(httpHeader,"<li>%s</li>", p->d_name);
Bobty 2:9d8793c23b46 260 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 261 }
Bobty 2:9d8793c23b46 262 }
Bobty 2:9d8793c23b46 263 closedir(d);
Bobty 2:9d8793c23b46 264 // printf("Directory closed\n");
Bobty 2:9d8793c23b46 265 sprintf(httpHeader,"</ul></body></html>");
Bobty 2:9d8793c23b46 266 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 267 }
Bobty 2:9d8793c23b46 268 else
Bobty 2:9d8793c23b46 269 {
Bobty 4:6afb3bbf20a4 270 sprintf(filename, "%s%s", _pBaseWebFolder, inFileName);
Bobty 4:6afb3bbf20a4 271 printf ("Filename %s\r\n", filename);
Bobty 2:9d8793c23b46 272 FILE* fp = fopen(filename, "r");
Bobty 2:9d8793c23b46 273 if (fp == NULL)
Bobty 2:9d8793c23b46 274 {
Bobty 2:9d8793c23b46 275 printf ("Filename %s not found\r\n", filename);
Bobty 2:9d8793c23b46 276 sprintf(httpHeader,"HTTP/1.1 404 Not Found \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 2:9d8793c23b46 277 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 278 pClient->send(inFileName,strlen(inFileName));
Bobty 2:9d8793c23b46 279 }
Bobty 2:9d8793c23b46 280 else
Bobty 2:9d8793c23b46 281 {
Bobty 2:9d8793c23b46 282 printf ("Sending file %s\r\n", filename);
Bobty 2:9d8793c23b46 283 sprintf(httpHeader,"HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: Close\r\n\r\n");
Bobty 2:9d8793c23b46 284 pClient->send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 285 int rdCnt = 0;
Bobty 2:9d8793c23b46 286 char fileBuf[1024];
Bobty 2:9d8793c23b46 287 while ((rdCnt = fread(fileBuf, sizeof( char ), 1024, fp)) == 1024)
Bobty 2:9d8793c23b46 288 {
Bobty 2:9d8793c23b46 289 pClient->send(fileBuf, rdCnt);
Bobty 2:9d8793c23b46 290 }
Bobty 2:9d8793c23b46 291 pClient->send(fileBuf, rdCnt);
Bobty 2:9d8793c23b46 292 fclose(fp);
Bobty 2:9d8793c23b46 293 }
Bobty 2:9d8793c23b46 294 }
Bobty 2:9d8793c23b46 295 }
Bobty 2:9d8793c23b46 296
Bobty 0:b5b4d07f7827 297 void RdWebServer::run()
Bobty 0:b5b4d07f7827 298 {
Bobty 0:b5b4d07f7827 299 TCPSocketConnection client;
Bobty 2:9d8793c23b46 300 const int HTTPD_MAX_HDR_LENGTH = 255;
Bobty 2:9d8793c23b46 301 char httpHeader[HTTPD_MAX_HDR_LENGTH+1];
Bobty 2:9d8793c23b46 302 const int HTTPD_MAX_REQ_LENGTH = 1023;
Bobty 2:9d8793c23b46 303 char buffer[HTTPD_MAX_REQ_LENGTH+1];
Bobty 2:9d8793c23b46 304
Bobty 0:b5b4d07f7827 305 //listening for http GET request
Bobty 2:9d8793c23b46 306 while (isListening())
Bobty 0:b5b4d07f7827 307 {
Bobty 0:b5b4d07f7827 308 //blocking mode(never timeout)
Bobty 0:b5b4d07f7827 309 if(_socketSrv.accept(client)<0)
Bobty 0:b5b4d07f7827 310 {
Bobty 2:9d8793c23b46 311 printf("TCP Socket failed to accept connection\n\r");
Bobty 0:b5b4d07f7827 312 }
Bobty 0:b5b4d07f7827 313 else
Bobty 0:b5b4d07f7827 314 {
Bobty 2:9d8793c23b46 315 client.set_blocking(false, 1000);
Bobty 2:9d8793c23b46 316 printf("Connection from IP: %s\n\r",client.get_address());
Bobty 0:b5b4d07f7827 317 if (_pStatusLed != NULL)
Bobty 0:b5b4d07f7827 318 *_pStatusLed = true;
Bobty 2:9d8793c23b46 319 Timer connectLimitTimer;
Bobty 2:9d8793c23b46 320 connectLimitTimer.start();
Bobty 0:b5b4d07f7827 321
Bobty 2:9d8793c23b46 322 while(connectLimitTimer.read() < 5) // 5 seconds timeout on HTTP operation
Bobty 0:b5b4d07f7827 323 {
Bobty 2:9d8793c23b46 324 int rxLen = client.receive(buffer, 1023);
Bobty 2:9d8793c23b46 325 if (rxLen == -1)
Bobty 2:9d8793c23b46 326 {
Bobty 2:9d8793c23b46 327 continue;
Bobty 2:9d8793c23b46 328 }
Bobty 2:9d8793c23b46 329 else if (rxLen == 0)
Bobty 2:9d8793c23b46 330 {
Bobty 2:9d8793c23b46 331 printf("received buffer is empty.\n\r");
Bobty 2:9d8793c23b46 332 break;
Bobty 2:9d8793c23b46 333 }
Bobty 2:9d8793c23b46 334 else if (rxLen >= 1024)
Bobty 0:b5b4d07f7827 335 {
Bobty 2:9d8793c23b46 336 sprintf(httpHeader,"HTTP/1.1 413 Request Entity Too Large \r\nContent-Type: text\r\nConnection: Close\r\n\r\n");
Bobty 2:9d8793c23b46 337 client.send(httpHeader,strlen(httpHeader));
Bobty 2:9d8793c23b46 338 client.send(buffer, rxLen);
Bobty 2:9d8793c23b46 339 break;
Bobty 2:9d8793c23b46 340 }
Bobty 2:9d8793c23b46 341 buffer[rxLen] = '\0';
Bobty 2:9d8793c23b46 342 // printf("Received Data: %d\n\r\n\r%.*s\n\r",strlen(buffer),strlen(buffer),buffer);
Bobty 2:9d8793c23b46 343 if (strncmp(buffer, "GET ", 4) == 0)
Bobty 2:9d8793c23b46 344 {
Bobty 3:594136d34a32 345 // printf("GET request\n\r");
Bobty 2:9d8793c23b46 346 char cmdStr[MAX_CMDSTR_LEN];
Bobty 2:9d8793c23b46 347 char argStr[MAX_ARGSTR_LEN];
Bobty 2:9d8793c23b46 348 if (extractCmdArgs(buffer+3, cmdStr, MAX_CMDSTR_LEN, argStr, MAX_ARGSTR_LEN))
Bobty 2:9d8793c23b46 349 {
Bobty 2:9d8793c23b46 350 printf("CmdStr %s\n\r", cmdStr);
Bobty 2:9d8793c23b46 351 printf("ArgStr %s\n\r", argStr);
Bobty 2:9d8793c23b46 352 bool cmdFound = false;
Bobty 2:9d8793c23b46 353 for (std::vector<RdWebServerCmdDef*>::iterator it = _commands.begin() ; it != _commands.end(); ++it)
Bobty 0:b5b4d07f7827 354 {
Bobty 2:9d8793c23b46 355 // printf("Testing <<%s>> with <<%s>>\r\n", (*it)->_pCmdStr, cmdStr);
Bobty 2:9d8793c23b46 356 if (strcasecmp((*it)->_pCmdStr, cmdStr) == 0)
Bobty 2:9d8793c23b46 357 {
Bobty 2:9d8793c23b46 358 printf("FoundCmd <%s> Type %d\n\r", cmdStr, (*it)->_cmdType);
Bobty 2:9d8793c23b46 359 cmdFound = true;
Bobty 2:9d8793c23b46 360 if ((*it)->_cmdType == RdWebServerCmdDef::CMD_CALLBACK)
Bobty 1:75bb184de749 361 {
Bobty 2:9d8793c23b46 362 ((*it)->_callback)(cmdStr, argStr);
Bobty 2:9d8793c23b46 363 }
Bobty 2:9d8793c23b46 364 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_LOCALFILE)
Bobty 2:9d8793c23b46 365 {
Bobty 2:9d8793c23b46 366 if ((*it)->_substFileName[0] != '\0')
Bobty 2:9d8793c23b46 367 handleLocalFileRequest((*it)->_substFileName, argStr, &client, httpHeader, (*it)->_bCacheIfPossible);
Bobty 2:9d8793c23b46 368 else
Bobty 2:9d8793c23b46 369 handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, (*it)->_bCacheIfPossible);
Bobty 1:75bb184de749 370 }
Bobty 4:6afb3bbf20a4 371 else if ((*it)->_cmdType == RdWebServerCmdDef::CMD_SDORUSBFILE)
Bobty 2:9d8793c23b46 372 {
Bobty 2:9d8793c23b46 373 if ((*it)->_substFileName[0] != '\0')
Bobty 2:9d8793c23b46 374 handleSDFileRequest((*it)->_substFileName, argStr, &client, httpHeader);
Bobty 2:9d8793c23b46 375 else
Bobty 2:9d8793c23b46 376 handleSDFileRequest(cmdStr, argStr, &client, httpHeader);
Bobty 2:9d8793c23b46 377 }
Bobty 2:9d8793c23b46 378 break;
Bobty 1:75bb184de749 379 }
Bobty 0:b5b4d07f7827 380 }
Bobty 2:9d8793c23b46 381 // If command not found see if it is a local file
Bobty 2:9d8793c23b46 382 if (!cmdFound)
Bobty 2:9d8793c23b46 383 handleLocalFileRequest(cmdStr, argStr, &client, httpHeader, false);
Bobty 2:9d8793c23b46 384 }
Bobty 3:594136d34a32 385
Bobty 2:9d8793c23b46 386 break;
Bobty 0:b5b4d07f7827 387 }
Bobty 2:9d8793c23b46 388
Bobty 0:b5b4d07f7827 389 }
Bobty 2:9d8793c23b46 390 printf("Connection closed ... TCP server is listening...\r\n");
Bobty 0:b5b4d07f7827 391 client.close();
Bobty 0:b5b4d07f7827 392 if (_pStatusLed != NULL)
Bobty 0:b5b4d07f7827 393 *_pStatusLed = false;
Bobty 0:b5b4d07f7827 394 }
Bobty 0:b5b4d07f7827 395 }
Bobty 0:b5b4d07f7827 396 }
Bobty 0:b5b4d07f7827 397
Bobty 2:9d8793c23b46 398 void RdWebServer::addCommand(char* pCmdStr, int cmdType, CmdCallbackType callback, char* substFileName, bool cacheIfPossible)
Bobty 1:75bb184de749 399 {
Bobty 2:9d8793c23b46 400 _commands.push_back(new RdWebServerCmdDef(pCmdStr, cmdType, callback, substFileName, cacheIfPossible));
Bobty 1:75bb184de749 401 }
Bobty 1:75bb184de749 402