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 07:41:28 2013 +0000
Revision:
2:9d8793c23b46
Parent:
1:75bb184de749
Child:
3:594136d34a32
Initial Revision Working

Who changed what in which revision?

UserRevisionLine numberNew 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