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:
Fri Oct 04 10:36:57 2013 +0000
Revision:
3:594136d34a32
Parent:
2:9d8793c23b46
Child:
4:6afb3bbf20a4
Tidied up a little - no functional changes

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