void RTSPServer::RTSPClientSession
::handleCmd_DESCRIBE(char const* cseq, char const* urlSuffix,
char const* fullRequestStr) {
char* sdpDescription = NULL;
char* rtspURL = NULL;
do {
if (!authenticationOK("DESCRIBE", cseq, urlSuffix, fullRequestStr))
break;
// We should really check that the request contains an "Accept:" #####
// for "application/sdp", because that's what we're sending back #####
// Begin by looking up the "ServerMediaSession" object for the
// specified "urlSuffix":
ServerMediaSession* session = fOurServer.lookupServerMediaSession(urlSuffix);
if (session == NULL) {
handleCmd_notFound(cseq);
break;
}
// Then, assemble a SDP description for this session:
sdpDescription = session->generateSDPDescription();
if (sdpDescription == NULL) {
// This usually means that a file name that was specified for a
// "ServerMediaSubsession" does not exist.
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 404 File Not Found, Or In Incorrect Format\r\n"
"CSeq: %s\r\n"
"%s\r\n",
cseq,
dateHeader());
break;
}
unsigned sdpDescriptionSize = strlen(sdpDescription);
// Also, generate our RTSP URL, for the "Content-Base:" header
// (which is necessary to ensure that the correct URL gets used in
// subsequent "SETUP" requests).
rtspURL = fOurServer.rtspURL(session, fClientSocket);
snprintf((char*)fResponseBuffer, sizeof fResponseBuffer,
"RTSP/1.0 200 OK\r\nCSeq: %s\r\n"
"%s"
"Content-Base: %s/\r\n"
"Content-Type: application/sdp\r\n"
"Content-Length: %d\r\n\r\n"
"%s",
cseq,
dateHeader(),
rtspURL,
sdpDescriptionSize,
sdpDescription);
} while (0);
delete[] sdpDescription;
delete[] rtspURL;
}
