GenericMediaServer::ClientConnection
::ClientConnection(GenericMediaServer& ourServer, int clientSocket, struct sockaddr_in clientAddr)
: fOurServer(ourServer), fOurSocket(clientSocket), fClientAddr(clientAddr) {
// Add ourself to our 'client connections' table:
fOurServer.fClientConnections->Add((char const*)this, this);
// Arrange to handle incoming requests:
resetRequestBuffer();
envir().taskScheduler()
.setBackgroundHandling(fOurSocket, SOCKET_READABLE|SOCKET_EXCEPTION, incomingRequestHandler, this);
}
RTSPServer::RTSPClientSession
::RTSPClientSession(RTSPServer& ourServer, unsigned sessionId,
int clientSocket, struct sockaddr_in clientAddr)
: fOurServer(ourServer), fOurSessionId(sessionId),
fOurServerMediaSession(NULL),
fClientSocket(clientSocket), fClientAddr(clientAddr),
fLivenessCheckTask(NULL),
fIsMulticast(False), fSessionIsActive(True), fStreamAfterSETUP(False),
fTCPStreamIdCount(0), fNumStreamStates(0), fStreamStates(NULL) {
// Arrange to handle incoming requests:
resetRequestBuffer();
envir().taskScheduler().turnOnBackgroundReadHandling(fClientSocket,
(TaskScheduler::BackgroundHandlerProc*)&incomingRequestHandler, this);
noteLiveness();
}
void RTSPServer::RTSPClientSession::incomingRequestHandler1() {
noteLiveness();
struct sockaddr_in dummy; // 'from' address, meaningless in this case
Boolean endOfMsg = False;
unsigned char* ptr = &fRequestBuffer[fRequestBytesAlreadySeen];
int bytesRead = readSocket(envir(), fClientSocket,
ptr, fRequestBufferBytesLeft, dummy);
if (bytesRead <= 0 || (unsigned)bytesRead >= fRequestBufferBytesLeft) {
// Either the client socket has died, or the request was too big for us.
// Terminate this connection:
#ifdef DEBUG
fprintf(stderr, "RTSPClientSession[%p]::incomingRequestHandler1() read %d bytes (of %d); terminating connection!\n", this, bytesRead, fRequestBufferBytesLeft);
#endif
delete this;
return;
}
#ifdef DEBUG
ptr[bytesRead] = '\0';
fprintf(stderr, "RTSPClientSession[%p]::incomingRequestHandler1() read %d bytes:%s\n", this, bytesRead, ptr);
#endif
// Look for the end of the message: <CR><LF><CR><LF>
unsigned char *tmpPtr = ptr;
if (fRequestBytesAlreadySeen > 0) --tmpPtr;
// in case the last read ended with a <CR>
while (tmpPtr < &ptr[bytesRead-1]) {
if (*tmpPtr == '\r' && *(tmpPtr+1) == '\n') {
if (tmpPtr - fLastCRLF == 2) { // This is it:
endOfMsg = 1;
break;
}
fLastCRLF = tmpPtr;
}
++tmpPtr;
}
fRequestBufferBytesLeft -= bytesRead;
fRequestBytesAlreadySeen += bytesRead;
if (!endOfMsg) return; // subsequent reads will be needed to complete the request
// Parse the request string into command name and 'CSeq',
// then handle the command:
fRequestBuffer[fRequestBytesAlreadySeen] = '\0';
char cmdName[RTSP_PARAM_STRING_MAX];
char urlPreSuffix[RTSP_PARAM_STRING_MAX];
char urlSuffix[RTSP_PARAM_STRING_MAX];
char cseq[RTSP_PARAM_STRING_MAX];
if (!parseRTSPRequestString((char*)fRequestBuffer, fRequestBytesAlreadySeen,
cmdName, sizeof cmdName,
urlPreSuffix, sizeof urlPreSuffix,
urlSuffix, sizeof urlSuffix,
cseq, sizeof cseq)) {
#ifdef DEBUG
fprintf(stderr, "parseRTSPRequestString() failed!\n");
#endif
handleCmd_bad(cseq);
} else {
#ifdef DEBUG
fprintf(stderr, "parseRTSPRequestString() returned cmdName \"%s\", urlPreSuffix \"%s\", urlSuffix \"%s\"\n", cmdName, urlPreSuffix, urlSuffix);
#endif
if (strcmp(cmdName, "OPTIONS") == 0) {
handleCmd_OPTIONS(cseq);
} else if (strcmp(cmdName, "DESCRIBE") == 0) {
handleCmd_DESCRIBE(cseq, urlSuffix, (char const*)fRequestBuffer);
} else if (strcmp(cmdName, "SETUP") == 0) {
handleCmd_SETUP(cseq, urlPreSuffix, urlSuffix, (char const*)fRequestBuffer);
} else if (strcmp(cmdName, "TEARDOWN") == 0
|| strcmp(cmdName, "PLAY") == 0
|| strcmp(cmdName, "PAUSE") == 0
|| strcmp(cmdName, "GET_PARAMETER") == 0
|| strcmp(cmdName, "SET_PARAMETER") == 0) {
handleCmd_withinSession(cmdName, urlPreSuffix, urlSuffix, cseq,
(char const*)fRequestBuffer);
} else {
handleCmd_notSupported(cseq);
}
}
#ifdef DEBUG
fprintf(stderr, "sending response: %s", fResponseBuffer);
#endif
send(fClientSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
if (strcmp(cmdName, "SETUP") == 0 && fStreamAfterSETUP) {
// The client has asked for streaming to commence now, rather than after a
// subsequent "PLAY" command. So, simulate the effect of a "PLAY" command:
handleCmd_withinSession("PLAY", urlPreSuffix, urlSuffix, cseq,
(char const*)fRequestBuffer);
}
resetRequestBuffer(); // to prepare for any subsequent request
if (!fSessionIsActive) delete this;
}
bool RTSPServer::RTSPClientSession::handleRequest() {
// Parse the request string into command name and 'CSeq',
// then handle the command:
char cmdName[RTSP_PARAM_STRING_MAX];
char urlPreSuffix[RTSP_PARAM_STRING_MAX];
char urlSuffix[RTSP_PARAM_STRING_MAX];
char cseq[RTSP_PARAM_STRING_MAX];
char* request = (char*)fRequestBuffer;
if (!parseRTSPRequestString(request, strlen(request),
cmdName, sizeof cmdName,
urlPreSuffix, sizeof urlPreSuffix,
urlSuffix, sizeof urlSuffix,
cseq, sizeof cseq)) {
#ifdef DEBUG
fprintf(stderr, "parseRTSPRequestString() failed!\n");
#endif
handleCmd_bad(cseq);
} else {
#ifdef DEBUG
fprintf(stderr, "parseRTSPRequestString() returned cmdName \"%s\", urlPreSuffix \"%s\", urlSuffix \"%s\"\n", cmdName, urlPreSuffix, urlSuffix);
#endif
if (strcmp(cmdName, "OPTIONS") == 0) {
handleCmd_OPTIONS(cseq);
} else if (strcmp(cmdName, "DESCRIBE") == 0) {
if (strlen(urlPreSuffix) > 0)
strcat(urlPreSuffix, "/");
strcat(urlPreSuffix, urlSuffix);
handleCmd_DESCRIBE(cseq, urlPreSuffix, request);
} else if (strcmp(cmdName, "SETUP") == 0) {
handleCmd_SETUP(cseq, urlPreSuffix, urlSuffix, request);
} else if (strcmp(cmdName, "TEARDOWN") == 0
|| strcmp(cmdName, "PLAY") == 0
|| strcmp(cmdName, "PAUSE") == 0
|| strcmp(cmdName, "GET_PARAMETER") == 0) {
handleCmd_withinSession(cmdName, urlPreSuffix, urlSuffix, cseq,
request);
} else {
handleCmd_notSupported(cseq);
}
}
#ifdef DEBUG
fprintf(stderr, "sending response: %s", fResponseBuffer);
#endif
send(fClientSocket, (char const*)fResponseBuffer, strlen((char*)fResponseBuffer), 0);
if (strcmp(cmdName, "SETUP") == 0 && fStreamAfterSETUP) {
// The client has asked for streaming to commence now, rather than after a
// subsequent "PLAY" command. So, simulate the effect of a "PLAY" command:
handleCmd_withinSession("PLAY", urlPreSuffix, urlSuffix, cseq,
request);
}
resetRequestBuffer(); // to prepare for any subsequent request
if (fObserver != NULL) {
int statusCode = 0;
sscanf((char const*)fResponseBuffer, "RTSP/1.0 %d", &statusCode);
fObserver->requestHandled(this, statusCode);
}
if (!fSessionIsActive) {
if (fObserver != NULL) {
fObserver->clientSessionEnded(this);
}
delete this;
return false;
}
return true;
}
