int RtspThread::run()
{
std::string message;
std::string response;
response.reserve( ZM_NETWORK_BUFSIZ );
if ( !mRtspSocket.connect( mHost.c_str(), strtol( mPort.c_str(), NULL, 10 ) ) )
Fatal( "Unable to connect RTSP socket" );
//Select select( 0.25 );
//select.addReader( &mRtspSocket );
//while ( select.wait() )
//{
//mRtspSocket.recv( response );
//Debug( 4, "Drained %d bytes from RTSP socket", response.size() );
//}
bool authTried = false;
if ( mMethod == RTP_RTSP_HTTP )
{
if ( !mRtspSocket2.connect( mHost.c_str(), strtol( mPort.c_str(), NULL, 10 ) ) )
Fatal( "Unable to connect auxiliary RTSP/HTTP socket" );
//Select select( 0.25 );
//select.addReader( &mRtspSocket2 );
//while ( select.wait() )
//{
//mRtspSocket2.recv( response );
//Debug( 4, "Drained %d bytes from HTTP socket", response.size() );
//}
//possibly retry sending the message for authentication
int respCode = -1;
char respText[256];
do {
message = "GET "+mPath+" HTTP/1.0\r\n";
message += "X-SessionCookie: "+mHttpSession+"\r\n";
if ( mNeedAuth ) {
message += mAuthenticator->getAuthHeader("GET", mPath);
authTried = true;
}
message += "Accept: application/x-rtsp-tunnelled\r\n";
message += "\r\n";
Debug( 2, "Sending HTTP message: %s", message.c_str() );
if ( mRtspSocket.send( message.c_str(), message.size() ) != (int)message.length() )
{
Error( "Unable to send message '%s': %s", message.c_str(), strerror(errno) );
return( -1 );
}
if ( mRtspSocket.recv( response ) < 0 )
{
Error( "Recv failed; %s", strerror(errno) );
return( -1 );
}
Debug( 2, "Received HTTP response: %s (%zd bytes)", response.c_str(), response.size() );
float respVer = 0;
respCode = -1;
if ( sscanf( response.c_str(), "HTTP/%f %3d %[^\r\n]\r\n", &respVer, &respCode, respText ) != 3 )
{
if ( isalnum(response[0]) )
{
Error( "Response parse failure in '%s'", response.c_str() );
}
else
{
Error( "Response parse failure, %zd bytes follow", response.size() );
if ( response.size() )
Hexdump( Logger::ERROR, response.data(), min(response.size(),16) );
}
return( -1 );
}
// If Server requests authentication, check WWW-Authenticate header and fill required fields
// for requested authentication method
if (respCode == 401 && !authTried) {
mNeedAuth = true;
mAuthenticator->checkAuthResponse(response);
Debug(2, "Processed 401 response");
mRtspSocket.close();
if ( !mRtspSocket.connect( mHost.c_str(), strtol( mPort.c_str(), NULL, 10 ) ) )
Fatal( "Unable to reconnect RTSP socket" );
Debug(2, "connection should be reopened now");
}
} while (respCode == 401 && !authTried);
if ( respCode != 200 )
{
Error( "Unexpected response code %d, text is '%s'", respCode, respText );
return( -1 );
}
message = "POST "+mPath+" HTTP/1.0\r\n";
message += "X-SessionCookie: "+mHttpSession+"\r\n";
if ( mNeedAuth )
message += mAuthenticator->getAuthHeader("POST", mPath);
message += "Content-Length: 32767\r\n";
message += "Content-Type: application/x-rtsp-tunnelled\r\n";
message += "\r\n";
Debug( 2, "Sending HTTP message: %s", message.c_str() );
if ( mRtspSocket2.send( message.c_str(), message.size() ) != (int)message.length() )
{
Error( "Unable to send message '%s': %s", message.c_str(), strerror(errno) );
return( -1 );
}
}
std::string localHost = "";
int localPorts[2] = { 0, 0 };
// Request supported RTSP commands by the server
message = "OPTIONS "+mUrl+" RTSP/1.0\r\n";
if ( !sendCommand( message ) )
return( -1 );
// A negative return here may indicate auth failure, but we will have setup the auth mechanisms so we need to retry.
if ( !recvResponse( response ) ) {
if ( mNeedAuth ) {
Debug( 2, "Resending OPTIONS due to possible auth requirement" );
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
} else {
return( -1 );
}
} // end if failed response maybe due to auth
char publicLine[256] = "";
StringVector lines = split( response, "\r\n" );
for ( size_t i = 0; i < lines.size(); i++ )
sscanf( lines[i].c_str(), "Public: %[^\r\n]\r\n", publicLine );
// Check if the server supports the GET_PARAMETER command
// If yes, it is likely that the server will request this command as a keepalive message
bool sendKeepalive = false;
if ( publicLine[0] && strstr(publicLine, "GET_PARAMETER") )
sendKeepalive = true;
message = "DESCRIBE "+mUrl+" RTSP/1.0\r\n";
bool res;
do {
if (mNeedAuth)
authTried = true;
sendCommand( message );
sleep( 1 );
res = recvResponse( response );
if (!res && respCode==401)
mNeedAuth = true;
} while (!res && respCode==401 && !authTried);
const std::string endOfHeaders = "\r\n\r\n";
size_t sdpStart = response.find( endOfHeaders );
if( sdpStart == std::string::npos )
return( -1 );
std::string DescHeader = response.substr( 0,sdpStart );
Debug( 1, "Processing DESCRIBE response header '%s'", DescHeader.c_str() );
lines = split( DescHeader, "\r\n" );
for ( size_t i = 0; i < lines.size(); i++ )
{
// If the device sends us a url value for Content-Base in the response header, we should use that instead
if ( ( lines[i].size() > 13 ) && ( lines[i].substr( 0, 13 ) == "Content-Base:" ) )
{
mUrl = trimSpaces( lines[i].substr( 13 ) );
Info("Received new Content-Base in DESCRIBE response header. Updated device Url to: '%s'", mUrl.c_str() );
break;
}
}
sdpStart += endOfHeaders.length();
std::string sdp = response.substr( sdpStart );
Debug( 1, "Processing SDP '%s'", sdp.c_str() );
try
{
mSessDesc = new SessionDescriptor( mUrl, sdp );
mFormatContext = mSessDesc->generateFormatContext();
}
catch( const Exception &e )
{
Error( e.getMessage().c_str() );
return( -1 );
}
#if 0
// New method using ffmpeg native functions
std::string authUrl = mUrl;
if ( !mAuth.empty() )
authUrl.insert( authUrl.find( "://" )+3, mAuth+"@" );
if ( av_open_input_file( &mFormatContext, authUrl.c_str(), NULL, 0, NULL ) != 0 )
{
Error( "Unable to open input '%s'", authUrl.c_str() );
return( -1 );
}
#endif
uint32_t rtpClock = 0;
std::string trackUrl = mUrl;
std::string controlUrl;
_AVCODECID codecId;
if ( mFormatContext->nb_streams >= 1 )
{
for ( unsigned int i = 0; i < mFormatContext->nb_streams; i++ )
{
SessionDescriptor::MediaDescriptor *mediaDesc = mSessDesc->getStream( i );
#if (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
if ( mFormatContext->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO )
#else
if ( mFormatContext->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO )
#endif
{
// Check if control Url is absolute or relative
controlUrl = mediaDesc->getControlUrl();
if (std::equal(trackUrl.begin(), trackUrl.end(), controlUrl.begin()))
{
trackUrl = controlUrl;
}
else
{
if ( *trackUrl.rbegin() != '/') {
trackUrl += "/" + controlUrl;
} else {
trackUrl += controlUrl;
}
}
rtpClock = mediaDesc->getClock();
codecId = mFormatContext->streams[i]->codec->codec_id;
// Hackery pokery
//rtpClock = mFormatContext->streams[i]->codec->sample_rate;
break;
}
}
}
switch( mMethod )
{
case RTP_UNICAST :
{
localPorts[0] = requestPorts();
localPorts[1] = localPorts[0]+1;
message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP;unicast;client_port="+stringtf( "%d", localPorts[0] )+"-"+stringtf( "%d", localPorts[1] )+"\r\n";
break;
}
case RTP_MULTICAST :
{
message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP;multicast\r\n";
break;
}
case RTP_RTSP :
case RTP_RTSP_HTTP :
{
message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP/TCP;unicast\r\n";
break;
}
default:
{
Panic( "Got unexpected method %d", mMethod );
break;
}
}
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
lines = split( response, "\r\n" );
std::string session;
int timeout = 0;
char transport[256] = "";
for ( size_t i = 0; i < lines.size(); i++ )
{
if ( ( lines[i].size() > 8 ) && ( lines[i].substr( 0, 8 ) == "Session:" ) )
{
StringVector sessionLine = split( lines[i].substr(9), ";" );
session = trimSpaces( sessionLine[0] );
if ( sessionLine.size() == 2 )
sscanf( trimSpaces( sessionLine[1] ).c_str(), "timeout=%d", &timeout );
}
sscanf( lines[i].c_str(), "Transport: %s", transport );
}
if ( session.empty() )
Fatal( "Unable to get session identifier from response '%s'", response.c_str() );
Debug( 2, "Got RTSP session %s, timeout %d secs", session.c_str(), timeout );
if ( !transport[0] )
Fatal( "Unable to get transport details from response '%s'", response.c_str() );
Debug( 2, "Got RTSP transport %s", transport );
std::string method = "";
int remotePorts[2] = { 0, 0 };
int remoteChannels[2] = { 0, 0 };
std::string distribution = "";
unsigned long ssrc = 0;
StringVector parts = split( transport, ";" );
for ( size_t i = 0; i < parts.size(); i++ )
{
if ( parts[i] == "unicast" || parts[i] == "multicast" )
distribution = parts[i];
else if ( startsWith( parts[i], "server_port=" ) )
{
method = "RTP/UNICAST";
StringVector subparts = split( parts[i], "=" );
StringVector ports = split( subparts[1], "-" );
remotePorts[0] = strtol( ports[0].c_str(), NULL, 10 );
remotePorts[1] = strtol( ports[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[i], "interleaved=" ) )
{
method = "RTP/RTSP";
StringVector subparts = split( parts[i], "=" );
StringVector channels = split( subparts[1], "-" );
remoteChannels[0] = strtol( channels[0].c_str(), NULL, 10 );
remoteChannels[1] = strtol( channels[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[i], "port=" ) )
{
method = "RTP/MULTICAST";
StringVector subparts = split( parts[i], "=" );
StringVector ports = split( subparts[1], "-" );
localPorts[0] = strtol( ports[0].c_str(), NULL, 10 );
localPorts[1] = strtol( ports[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[i], "destination=" ) )
{
StringVector subparts = split( parts[i], "=" );
localHost = subparts[1];
}
else if ( startsWith( parts[i], "ssrc=" ) )
{
StringVector subparts = split( parts[i], "=" );
ssrc = strtoll( subparts[1].c_str(), NULL, 16 );
}
}
Debug( 2, "RTSP Method is %s", method.c_str() );
Debug( 2, "RTSP Distribution is %s", distribution.c_str() );
Debug( 2, "RTSP SSRC is %lx", ssrc );
Debug( 2, "RTSP Local Host is %s", localHost.c_str() );
Debug( 2, "RTSP Local Ports are %d/%d", localPorts[0], localPorts[1] );
Debug( 2, "RTSP Remote Ports are %d/%d", remotePorts[0], remotePorts[1] );
Debug( 2, "RTSP Remote Channels are %d/%d", remoteChannels[0], remoteChannels[1] );
message = "PLAY "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\nRange: npt=0.000-\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
lines = split( response, "\r\n" );
std::string rtpInfo;
for ( size_t i = 0; i < lines.size(); i++ )
{
if ( ( lines[i].size() > 9 ) && ( lines[i].substr( 0, 9 ) == "RTP-Info:" ) )
rtpInfo = trimSpaces( lines[i].substr( 9 ) );
// Check for a timeout again. Some rtsp devices don't send a timeout until after the PLAY command is sent
if ( ( lines[i].size() > 8 ) && ( lines[i].substr( 0, 8 ) == "Session:" ) && ( timeout == 0 ) )
{
StringVector sessionLine = split( lines[i].substr(9), ";" );
if ( sessionLine.size() == 2 )
sscanf( trimSpaces( sessionLine[1] ).c_str(), "timeout=%d", &timeout );
if ( timeout > 0 )
Debug( 2, "Got timeout %d secs from PLAY command response", timeout );
}
}
int seq = 0;
unsigned long rtpTime = 0;
StringVector streams;
if ( rtpInfo.empty() )
{
Debug( 1, "RTP Info Empty. Starting values for Sequence and Rtptime shall be zero.");
}
else
{
Debug( 2, "Got RTP Info %s", rtpInfo.c_str() );
// More than one stream can be included in the RTP Info
streams = split( rtpInfo.c_str(), "," );
for ( size_t i = 0; i < streams.size(); i++ )
{
// We want the stream that matches the trackUrl we are using
if ( streams[i].find(controlUrl.c_str()) != std::string::npos )
{
// Parse the sequence and rtptime values
parts = split( streams[i].c_str(), ";" );
for ( size_t j = 0; j < parts.size(); j++ )
{
if ( startsWith( parts[j], "seq=" ) )
{
StringVector subparts = split( parts[j], "=" );
seq = strtol( subparts[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[j], "rtptime=" ) )
{
StringVector subparts = split( parts[j], "=" );
rtpTime = strtol( subparts[1].c_str(), NULL, 10 );
}
}
break;
}
}
}
Debug( 2, "RTSP Seq is %d", seq );
Debug( 2, "RTSP Rtptime is %ld", rtpTime );
time_t lastKeepalive = time(NULL);
time_t now;
message = "GET_PARAMETER "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
switch( mMethod )
{
case RTP_UNICAST :
{
RtpSource *source = new RtpSource( mId, "", localPorts[0], mHost, remotePorts[0], ssrc, seq, rtpClock, rtpTime, codecId );
mSources[ssrc] = source;
RtpDataThread rtpDataThread( *this, *source );
RtpCtrlThread rtpCtrlThread( *this, *source );
rtpDataThread.start();
rtpCtrlThread.start();
while( !mStop )
{
now = time(NULL);
// Send a keepalive message if the server supports this feature and we are close to the timeout expiration
Debug(5, "sendkeepalive %d, timeout %d, now: %d last: %d since: %d", sendKeepalive, timeout, now, lastKeepalive, (now-lastKeepalive) );
if ( sendKeepalive && (timeout > 0) && ((now-lastKeepalive) > (timeout-5)) )
{
if ( !sendCommand( message ) )
return( -1 );
lastKeepalive = now;
}
usleep( 100000 );
}
#if 0
message = "PAUSE "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
#endif
message = "TEARDOWN "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
rtpDataThread.stop();
rtpCtrlThread.stop();
//rtpDataThread.kill( SIGTERM );
//rtpCtrlThread.kill( SIGTERM );
rtpDataThread.join();
rtpCtrlThread.join();
delete mSources[ssrc];
mSources.clear();
releasePorts( localPorts[0] );
break;
}
case RTP_RTSP :
case RTP_RTSP_HTTP :
{
RtpSource *source = new RtpSource( mId, "", remoteChannels[0], mHost, remoteChannels[0], ssrc, seq, rtpClock, rtpTime, codecId );
mSources[ssrc] = source;
// These never actually run
RtpDataThread rtpDataThread( *this, *source );
RtpCtrlThread rtpCtrlThread( *this, *source );
Select select( double(config.http_timeout)/1000.0 );
select.addReader( &mRtspSocket );
Buffer buffer( ZM_NETWORK_BUFSIZ );
std::string keepaliveMessage = "OPTIONS "+mUrl+" RTSP/1.0\r\n";
std::string keepaliveResponse = "RTSP/1.0 200 OK\r\n";
while ( !mStop && select.wait() >= 0 )
{
Select::CommsList readable = select.getReadable();
if ( readable.size() == 0 )
{
Error( "RTSP timed out" );
break;
}
static char tempBuffer[ZM_NETWORK_BUFSIZ];
ssize_t nBytes = mRtspSocket.recv( tempBuffer, sizeof(tempBuffer) );
buffer.append( tempBuffer, nBytes );
Debug( 4, "Read %zd bytes on sd %d, %d total", nBytes, mRtspSocket.getReadDesc(), buffer.size() );
while( buffer.size() > 0 )
{
if ( buffer[0] == '$' )
{
if ( buffer.size() < 4 )
break;
unsigned char channel = buffer[1];
unsigned short len = ntohs( *((unsigned short *)(buffer+2)) );
Debug( 4, "Got %d bytes left, expecting %d byte packet on channel %d", buffer.size(), len, channel );
if ( (unsigned short)buffer.size() < (len+4) )
{
Debug( 4, "Missing %d bytes, rereading", (len+4)-buffer.size() );
break;
}
if ( channel == remoteChannels[0] )
{
Debug( 4, "Got %d bytes on data channel %d, packet length is %d", buffer.size(), channel, len );
Hexdump( 4, (char *)buffer, 16 );
rtpDataThread.recvPacket( buffer+4, len );
Debug( 4, "Received" );
}
else if ( channel == remoteChannels[1] )
{
// len = ntohs( *((unsigned short *)(buffer+2)) );
// Debug( 4, "Got %d bytes on control channel %d", nBytes, channel );
Debug( 4, "Got %d bytes on control channel %d, packet length is %d", buffer.size(), channel, len );
Hexdump( 4, (char *)buffer, 16 );
rtpCtrlThread.recvPackets( buffer+4, len );
}
else
{
Error( "Unexpected channel selector %d in RTSP interleaved data", buffer[1] );
buffer.clear();
break;
}
buffer.consume( len+4 );
nBytes -= len+4;
}
else
{
if ( keepaliveResponse.compare( 0, keepaliveResponse.size(), (char *)buffer, keepaliveResponse.size() ) == 0 )
{
Debug( 4, "Got keepalive response '%s'", (char *)buffer );
//buffer.consume( keepaliveResponse.size() );
if ( char *charPtr = (char *)memchr( (char *)buffer, '$', buffer.size() ) )
{
int discardBytes = charPtr-(char *)buffer;
buffer -= discardBytes;
}
else
{
buffer.clear();
}
}
else
{
if ( char *charPtr = (char *)memchr( (char *)buffer, '$', buffer.size() ) )
{
int discardBytes = charPtr-(char *)buffer;
Warning( "Unexpected format RTSP interleaved data, resyncing by %d bytes", discardBytes );
Hexdump( -1, (char *)buffer, discardBytes );
buffer -= discardBytes;
}
else
{
Warning( "Unexpected format RTSP interleaved data, dumping %d bytes", buffer.size() );
Hexdump( -1, (char *)buffer, 32 );
buffer.clear();
}
}
}
}
// Send a keepalive message if the server supports this feature and we are close to the timeout expiration
// FIXME: Is this really necessary when using tcp ?
now = time(NULL);
// Send a keepalive message if the server supports this feature and we are close to the timeout expiration
Debug(5, "sendkeepalive %d, timeout %d, now: %d last: %d since: %d", sendKeepalive, timeout, now, lastKeepalive, (now-lastKeepalive) );
if ( sendKeepalive && (timeout > 0) && ((now-lastKeepalive) > (timeout-5)) )
{
if ( !sendCommand( message ) )
return( -1 );
lastKeepalive = now;
}
buffer.tidy( 1 );
}
#if 0
message = "PAUSE "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
#endif
// Send a teardown message but don't expect a response as this may not be implemented on the server when using TCP
message = "TEARDOWN "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
delete mSources[ssrc];
mSources.clear();
break;
}
case RTP_MULTICAST :
{
RtpSource *source = new RtpSource( mId, localHost, localPorts[0], mHost, remotePorts[0], ssrc, seq, rtpClock, rtpTime, codecId );
mSources[ssrc] = source;
RtpDataThread rtpDataThread( *this, *source );
RtpCtrlThread rtpCtrlThread( *this, *source );
rtpDataThread.start();
rtpCtrlThread.start();
while( !mStop )
{
// Send a keepalive message if the server supports this feature and we are close to the timeout expiration
if ( sendKeepalive && (timeout > 0) && ((time(NULL)-lastKeepalive) > (timeout-5)) )
{
if ( !sendCommand( message ) )
return( -1 );
lastKeepalive = time(NULL);
}
usleep( 100000 );
}
#if 0
message = "PAUSE "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
#endif
message = "TEARDOWN "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
rtpDataThread.stop();
rtpCtrlThread.stop();
rtpDataThread.join();
rtpCtrlThread.join();
delete mSources[ssrc];
mSources.clear();
releasePorts( localPorts[0] );
break;
}
default:
{
Panic( "Got unexpected method %d", mMethod );
break;
}
}
return( 0 );
}
int RtspThread::run()
{
std::string message;
std::string response;
response.reserve( ZM_NETWORK_BUFSIZ );
if ( !mRtspSocket.connect( mHost.c_str(), strtol( mPort.c_str(), NULL, 10 ) ) )
Fatal( "Unable to connect RTSP socket" );
//Select select( 0.25 );
//select.addReader( &mRtspSocket );
//while ( select.wait() )
//{
//mRtspSocket.recv( response );
//Debug( 4, "Drained %d bytes from RTSP socket", response.size() );
//}
if ( mMethod == RTP_RTSP_HTTP )
{
if ( !mRtspSocket2.connect( mHost.c_str(), strtol( mPort.c_str(), NULL, 10 ) ) )
Fatal( "Unable to connect auxiliary RTSP/HTTP socket" );
//Select select( 0.25 );
//select.addReader( &mRtspSocket2 );
//while ( select.wait() )
//{
//mRtspSocket2.recv( response );
//Debug( 4, "Drained %d bytes from HTTP socket", response.size() );
//}
message = "GET "+mPath+" HTTP/1.0\r\n";
message += "X-SessionCookie: "+mHttpSession+"\r\n";
if ( !mAuth.empty() )
message += stringtf( "Authorization: Basic %s\r\n", mAuth64.c_str() );
message += "\r\n";
Debug( 2, "Sending HTTP message: %s", message.c_str() );
if ( mRtspSocket.send( message.c_str(), message.size() ) != (int)message.length() )
{
Error( "Unable to send message '%s': %s", message.c_str(), strerror(errno) );
return( -1 );
}
if ( mRtspSocket.recv( response ) < 0 )
{
Error( "Recv failed; %s", strerror(errno) );
return( -1 );
}
Debug( 2, "Received HTTP response: %s (%zd bytes)", response.c_str(), response.size() );
float respVer = 0;
int respCode = -1;
char respText[256];
if ( sscanf( response.c_str(), "HTTP/%f %3d %[^\r\n]\r\n", &respVer, &respCode, respText ) != 3 )
{
if ( isalnum(response[0]) )
{
Error( "Response parse failure in '%s'", response.c_str() );
}
else
{
Error( "Response parse failure, %zd bytes follow", response.size() );
if ( response.size() )
Hexdump( Logger::ERROR, response.data(), min(response.size(),16) );
}
return( -1 );
}
if ( respCode != 200 )
{
Error( "Unexpected response code %d, text is '%s'", respCode, respText );
return( -1 );
}
message = "POST "+mPath+" HTTP/1.0\r\n";
message += "X-SessionCookie: "+mHttpSession+"\r\n";
if ( !mAuth.empty() )
message += stringtf( "Authorization: Basic %s\r\n", mAuth64.c_str() );
message += "Content-Length: 32767\r\n";
message += "Content-Type: application/x-rtsp-tunnelled\r\n";
message += "\r\n";
Debug( 2, "Sending HTTP message: %s", message.c_str() );
if ( mRtspSocket2.send( message.c_str(), message.size() ) != (int)message.length() )
{
Error( "Unable to send message '%s': %s", message.c_str(), strerror(errno) );
return( -1 );
}
}
std::string localHost = "";
int localPorts[2] = { 0, 0 };
//message = "OPTIONS * RTSP/1.0\r\n";
//sendCommand( message );
//recvResponse( response );
message = "DESCRIBE "+mUrl+" RTSP/1.0\r\n";
sendCommand( message );
sleep( 1 );
recvResponse( response );
const std::string endOfHeaders = "\r\n\r\n";
size_t sdpStart = response.find( endOfHeaders );
if( sdpStart == std::string::npos )
return( -1 );
sdpStart += endOfHeaders.length();
std::string sdp = response.substr( sdpStart );
Debug( 1, "Processing SDP '%s'", sdp.c_str() );
SessionDescriptor *sessDesc = 0;
try
{
sessDesc = new SessionDescriptor( mUrl, sdp );
mFormatContext = sessDesc->generateFormatContext();
}
catch( const Exception &e )
{
Error( e.getMessage().c_str() );
return( -1 );
}
#if 0
// New method using ffmpeg native functions
std::string authUrl = mUrl;
if ( !mAuth.empty() )
authUrl.insert( authUrl.find( "://" )+3, mAuth+"@" );
if ( av_open_input_file( &mFormatContext, authUrl.c_str(), NULL, 0, NULL ) != 0 )
{
Error( "Unable to open input '%s'", authUrl.c_str() );
return( -1 );
}
#endif
uint32_t rtpClock = 0;
std::string trackUrl = mUrl;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(54,25,0)
enum AVCodecID codecId;
#else
enum CodecID codecId;
#endif
if ( mFormatContext->nb_streams >= 1 )
{
for ( unsigned int i = 0; i < mFormatContext->nb_streams; i++ )
{
SessionDescriptor::MediaDescriptor *mediaDesc = sessDesc->getStream( i );
#if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(51,2,1)
if ( mFormatContext->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO )
#else
if ( mFormatContext->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO )
#endif
{
trackUrl += "/"+mediaDesc->getControlUrl();
rtpClock = mediaDesc->getClock();
codecId = mFormatContext->streams[i]->codec->codec_id;
// Hackery pokery
//rtpClock = mFormatContext->streams[i]->codec->sample_rate;
break;
}
}
}
switch( mMethod )
{
case RTP_UNICAST :
{
localPorts[0] = requestPorts();
localPorts[1] = localPorts[0]+1;
message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP;unicast;client_port="+stringtf( "%d", localPorts[0] )+"-"+stringtf( "%d", localPorts[1] )+"\r\n";
break;
}
case RTP_MULTICAST :
{
message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP;multicast\r\n";
break;
}
case RTP_RTSP :
case RTP_RTSP_HTTP :
{
message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP/TCP;unicast\r\n";
break;
}
default:
{
Panic( "Got unexpected method %d", mMethod );
break;
}
}
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
StringVector lines = split( response, "\r\n" );
char *session = 0;
int timeout = 0;
char transport[256] = "";
for ( size_t i = 0; i < lines.size(); i++ )
{
sscanf( lines[i].c_str(), "Session: %a[0-9a-fA-F]; timeout=%d", &session, &timeout );
sscanf( lines[i].c_str(), "Transport: %s", transport );
}
if ( !session )
Fatal( "Unable to get session identifier from response '%s'", response.c_str() );
Debug( 2, "Got RTSP session %s, timeout %d secs", session, timeout );
if ( !transport[0] )
Fatal( "Unable to get transport details from response '%s'", response.c_str() );
Debug( 2, "Got RTSP transport %s", transport );
std::string method = "";
int remotePorts[2] = { 0, 0 };
int remoteChannels[2] = { 0, 0 };
std::string distribution = "";
unsigned long ssrc = 0;
StringVector parts = split( transport, ";" );
for ( size_t i = 0; i < parts.size(); i++ )
{
if ( parts[i] == "unicast" || parts[i] == "multicast" )
distribution = parts[i];
else if ( startsWith( parts[i], "server_port=" ) )
{
method = "RTP/UNICAST";
StringVector subparts = split( parts[i], "=" );
StringVector ports = split( subparts[1], "-" );
remotePorts[0] = strtol( ports[0].c_str(), NULL, 10 );
remotePorts[1] = strtol( ports[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[i], "interleaved=" ) )
{
method = "RTP/RTSP";
StringVector subparts = split( parts[i], "=" );
StringVector channels = split( subparts[1], "-" );
remoteChannels[0] = strtol( channels[0].c_str(), NULL, 10 );
remoteChannels[1] = strtol( channels[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[i], "port=" ) )
{
method = "RTP/MULTICAST";
StringVector subparts = split( parts[i], "=" );
StringVector ports = split( subparts[1], "-" );
localPorts[0] = strtol( ports[0].c_str(), NULL, 10 );
localPorts[1] = strtol( ports[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[i], "destination=" ) )
{
StringVector subparts = split( parts[i], "=" );
localHost = subparts[1];
}
else if ( startsWith( parts[i], "ssrc=" ) )
{
StringVector subparts = split( parts[i], "=" );
ssrc = strtoll( subparts[1].c_str(), NULL, 16 );
}
}
Debug( 2, "RTSP Method is %s", method.c_str() );
Debug( 2, "RTSP Distribution is %s", distribution.c_str() );
Debug( 2, "RTSP SSRC is %lx", ssrc );
Debug( 2, "RTSP Local Host is %s", localHost.c_str() );
Debug( 2, "RTSP Local Ports are %d/%d", localPorts[0], localPorts[1] );
Debug( 2, "RTSP Remote Ports are %d/%d", remotePorts[0], remotePorts[1] );
Debug( 2, "RTSP Remote Channels are %d/%d", remoteChannels[0], remoteChannels[1] );
message = "PLAY "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\nRange: npt=0.000-\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
lines = split( response, "\r\n" );
char *rtpInfo = 0;
for ( size_t i = 0; i < lines.size(); i++ )
{
sscanf( lines[i].c_str(), "RTP-Info: %as", &rtpInfo );
}
if ( !rtpInfo )
Fatal( "Unable to get RTP Info identifier from response '%s'", response.c_str() );
Debug( 2, "Got RTP Info %s", rtpInfo );
int seq = 0;
unsigned long rtpTime = 0;
parts = split( rtpInfo, ";" );
for ( size_t i = 0; i < parts.size(); i++ )
{
if ( startsWith( parts[i], "seq=" ) )
{
StringVector subparts = split( parts[i], "=" );
seq = strtol( subparts[1].c_str(), NULL, 10 );
}
else if ( startsWith( parts[i], "rtptime=" ) )
{
StringVector subparts = split( parts[i], "=" );
rtpTime = strtol( subparts[1].c_str(), NULL, 10 );
}
}
Debug( 2, "RTSP Seq is %d", seq );
Debug( 2, "RTSP Rtptime is %ld", rtpTime );
switch( mMethod )
{
case RTP_UNICAST :
{
RtpSource *source = new RtpSource( mId, "", localPorts[0], mHost, remotePorts[0], ssrc, seq, rtpClock, rtpTime, codecId );
mSources[ssrc] = source;
RtpDataThread rtpDataThread( *this, *source );
RtpCtrlThread rtpCtrlThread( *this, *source );
rtpDataThread.start();
rtpCtrlThread.start();
while( !mStop )
{
usleep( 100000 );
}
#if 0
message = "PAUSE "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
#endif
message = "TEARDOWN "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
rtpDataThread.stop();
rtpCtrlThread.stop();
//rtpDataThread.kill( SIGTERM );
//rtpCtrlThread.kill( SIGTERM );
rtpDataThread.join();
rtpCtrlThread.join();
delete mSources[ssrc];
mSources.clear();
releasePorts( localPorts[0] );
break;
}
case RTP_RTSP :
case RTP_RTSP_HTTP :
{
RtpSource *source = new RtpSource( mId, "", remoteChannels[0], mHost, remoteChannels[0], ssrc, seq, rtpClock, rtpTime, codecId );
mSources[ssrc] = source;
// These never actually run
RtpDataThread rtpDataThread( *this, *source );
RtpCtrlThread rtpCtrlThread( *this, *source );
Select select( double(config.http_timeout)/1000.0 );
select.addReader( &mRtspSocket );
Buffer buffer( ZM_NETWORK_BUFSIZ );
time_t lastKeepalive = time(NULL);
std::string keepaliveMessage = "OPTIONS * RTSP/1.0\r\n";
std::string keepaliveResponse = "RTSP/1.0 200 OK\r\n";
while ( !mStop && select.wait() >= 0 )
{
Select::CommsList readable = select.getReadable();
if ( readable.size() == 0 )
{
Error( "RTSP timed out" );
break;
}
static char tempBuffer[ZM_NETWORK_BUFSIZ];
ssize_t nBytes = mRtspSocket.recv( tempBuffer, sizeof(tempBuffer) );
buffer.append( tempBuffer, nBytes );
Debug( 4, "Read %zd bytes on sd %d, %d total", nBytes, mRtspSocket.getReadDesc(), buffer.size() );
while( buffer.size() > 0 )
{
if ( buffer[0] == '$' )
{
if ( buffer.size() < 4 )
break;
unsigned char channel = buffer[1];
unsigned short len = ntohs( *((unsigned short *)(buffer+2)) );
Debug( 4, "Got %d bytes left, expecting %d byte packet on channel %d", buffer.size(), len, channel );
if ( (unsigned short)buffer.size() < (len+4) )
{
Debug( 4, "Missing %d bytes, rereading", (len+4)-buffer.size() );
break;
}
if ( channel == remoteChannels[0] )
{
Debug( 4, "Got %d bytes on data channel %d, packet length is %d", buffer.size(), channel, len );
Hexdump( 4, (char *)buffer, 16 );
rtpDataThread.recvPacket( buffer+4, len );
Debug( 4, "Received" );
}
else if ( channel == remoteChannels[1] )
{
// len = ntohs( *((unsigned short *)(buffer+2)) );
// Debug( 4, "Got %d bytes on control channel %d", nBytes, channel );
Debug( 4, "Got %d bytes on control channel %d, packet length is %d", buffer.size(), channel, len );
Hexdump( 4, (char *)buffer, 16 );
rtpCtrlThread.recvPackets( buffer+4, len );
}
else
{
Error( "Unexpected channel selector %d in RTSP interleaved data", buffer[1] );
buffer.clear();
break;
}
buffer.consume( len+4 );
nBytes -= len+4;
}
else
{
if ( keepaliveResponse.compare( 0, keepaliveResponse.size(), (char *)buffer, keepaliveResponse.size() ) == 0 )
{
Debug( 4, "Got keepalive response '%s'", (char *)buffer );
//buffer.consume( keepaliveResponse.size() );
if ( char *charPtr = (char *)memchr( (char *)buffer, '$', buffer.size() ) )
{
int discardBytes = charPtr-(char *)buffer;
buffer -= discardBytes;
}
else
{
buffer.clear();
}
}
else
{
if ( char *charPtr = (char *)memchr( (char *)buffer, '$', buffer.size() ) )
{
int discardBytes = charPtr-(char *)buffer;
Warning( "Unexpected format RTSP interleaved data, resyncing by %d bytes", discardBytes );
Hexdump( -1, (char *)buffer, discardBytes );
buffer -= discardBytes;
}
else
{
Warning( "Unexpected format RTSP interleaved data, dumping %d bytes", buffer.size() );
Hexdump( -1, (char *)buffer, 32 );
buffer.clear();
}
}
}
}
if ( (timeout > 0) && ((time(NULL)-lastKeepalive) > (timeout-5)) )
{
if ( !sendCommand( message ) )
return( -1 );
lastKeepalive = time(NULL);
}
buffer.tidy( 1 );
}
#if 0
message = "PAUSE "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
#endif
message = "TEARDOWN "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
delete mSources[ssrc];
mSources.clear();
break;
}
case RTP_MULTICAST :
{
RtpSource *source = new RtpSource( mId, localHost, localPorts[0], mHost, remotePorts[0], ssrc, seq, rtpClock, rtpTime, codecId );
mSources[ssrc] = source;
RtpDataThread rtpDataThread( *this, *source );
RtpCtrlThread rtpCtrlThread( *this, *source );
rtpDataThread.start();
rtpCtrlThread.start();
while( !mStop )
{
usleep( 100000 );
}
#if 0
message = "PAUSE "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
#endif
message = "TEARDOWN "+mUrl+" RTSP/1.0\r\nSession: "+session+"\r\n";
if ( !sendCommand( message ) )
return( -1 );
if ( !recvResponse( response ) )
return( -1 );
rtpDataThread.stop();
rtpCtrlThread.stop();
rtpDataThread.join();
rtpCtrlThread.join();
delete mSources[ssrc];
mSources.clear();
releasePorts( localPorts[0] );
break;
}
default:
{
Panic( "Got unexpected method %d", mMethod );
break;
}
}
return( 0 );
}
