786 lines
27 KiB
C++
786 lines
27 KiB
C++
//
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// ZoneMinder RTSP Class Implementation, $Date$, $Revision$
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// Copyright (C) 2001-2008 Philip Coombes
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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#include "zm_rtsp.h"
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#include "zm_config.h"
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#include "zm_rtp_data.h"
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#include "zm_rtp_ctrl.h"
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#include "zm_db.h"
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#include <algorithm>
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#if HAVE_LIBAVFORMAT
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int RtspThread::smMinDataPort = 0;
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int RtspThread::smMaxDataPort = 0;
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RtspThread::PortSet RtspThread::smAssignedPorts;
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bool RtspThread::sendCommand(std::string message) {
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if ( mNeedAuth ) {
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StringVector parts = Split(message, " ");
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if ( parts.size() > 1 )
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message += mAuthenticator->getAuthHeader(parts[0], parts[1]);
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}
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message += stringtf("User-Agent: ZoneMinder/%s\r\n", ZM_VERSION);
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message += stringtf("CSeq: %d\r\n\r\n", ++mSeq);
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Debug(2, "Sending RTSP message: %s", message.c_str());
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if ( mMethod == RTP_RTSP_HTTP ) {
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message = Base64Encode(message);
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Debug(2, "Sending encoded RTSP message: %s", message.c_str());
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if ( mRtspSocket2.send(message.c_str(), message.size()) != (int)message.length() ) {
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Error("Unable to send message '%s': %s", message.c_str(), strerror(errno));
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return false;
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}
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} else {
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if ( mRtspSocket.send(message.c_str(), message.size()) != (int)message.length() ) {
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Error("Unable to send message '%s': %s", message.c_str(), strerror(errno));
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return false;
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}
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}
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return true;
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}
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bool RtspThread::recvResponse(std::string &response) {
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if ( mRtspSocket.recv(response) < 0 )
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Error("Recv failed; %s", strerror(errno));
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Debug(2, "Received RTSP response: %s (%zd bytes)", response.c_str(), response.size());
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float respVer = 0;
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respCode = -1;
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char respText[ZM_NETWORK_BUFSIZ];
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if ( sscanf(response.c_str(), "RTSP/%f %3d %[^\r\n]\r\n", &respVer, &respCode, respText) != 3 ) {
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if ( isalnum(response[0]) ) {
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Error("Response parse failure in '%s'", response.c_str());
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} else {
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Error("Response parse failure, %zd bytes follow", response.size());
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if ( response.size() )
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Hexdump(Logger::ERROR, response.data(), std::min(int(response.size()), 16));
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}
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return false;
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}
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if ( respCode == 401 ) {
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Debug(2, "Got 401 access denied response code, check WWW-Authenticate header and retry");
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mAuthenticator->checkAuthResponse(response);
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mNeedAuth = true;
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return false;
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} else if ( respCode != 200 ) {
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Error("Unexpected response code %d, text is '%s'", respCode, respText);
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return false;
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}
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return true;
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} // end RtspThread::recvResponse
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int RtspThread::requestPorts() {
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if ( !smMinDataPort ) {
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char sql[ZM_SQL_SML_BUFSIZ];
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//FIXME Why not load specifically by Id? This will get ineffeicient with a lot of monitors
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strncpy(sql, "SELECT `Id` FROM `Monitors` WHERE `Function` != 'None' AND `Type` = 'Remote' AND `Protocol` = 'rtsp' AND `Method` = 'rtpUni' ORDER BY `Id` ASC", sizeof(sql));
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MYSQL_RES *result = zmDbFetch(sql);
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int nMonitors = mysql_num_rows(result);
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int position = 0;
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if ( nMonitors ) {
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for ( int i = 0; MYSQL_ROW dbrow = mysql_fetch_row(result); i++ ) {
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int id = atoi(dbrow[0]);
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if ( mId == id ) {
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position = i;
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break;
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}
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}
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} else {
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// Minor hack for testing when not strictly enabled
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nMonitors = 1;
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position = 0;
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}
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mysql_free_result(result);
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int portRange = int(((config.max_rtp_port-config.min_rtp_port)+1)/nMonitors);
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smMinDataPort = config.min_rtp_port + (position * portRange);
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smMaxDataPort = smMinDataPort + portRange - 1;
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Debug(2, "Assigned RTP port range is %d-%d", smMinDataPort, smMaxDataPort);
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}
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for ( int i = smMinDataPort; i <= smMaxDataPort; i++ ) {
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PortSet::const_iterator iter = smAssignedPorts.find(i);
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if ( iter == smAssignedPorts.end() ) {
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smAssignedPorts.insert(i);
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return i;
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}
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}
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Panic("Can assign RTP port, no ports left in pool");
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return -1;
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}
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void RtspThread::releasePorts(int port) {
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if ( port > 0 )
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smAssignedPorts.erase(port);
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}
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RtspThread::RtspThread(
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int id,
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RtspMethod method,
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const std::string &protocol,
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const std::string &host,
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const std::string &port,
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const std::string &path,
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const std::string &auth,
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bool rtsp_describe) :
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mId(id),
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mMethod(method),
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mProtocol(protocol),
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mHost(host),
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mPort(port),
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mPath(path),
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mRtspDescribe(rtsp_describe),
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mSessDesc(0),
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mFormatContext(0),
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mSeq(0),
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mSession(0),
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mSsrc(0),
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mDist(UNDEFINED),
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mRtpTime(0),
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mTerminate(false)
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{
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mUrl = mProtocol+"://"+mHost+":"+mPort;
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if ( !mPath.empty() ) {
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if ( mPath[0] == '/' )
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mUrl += mPath;
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else
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mUrl += '/'+mPath;
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}
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mSsrc = rand();
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Debug(2, "RTSP Local SSRC is %x, url is %s", mSsrc, mUrl.c_str());
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if ( mMethod == RTP_RTSP_HTTP )
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mHttpSession = stringtf("%d", rand());
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mNeedAuth = false;
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StringVector parts = Split(auth, ":");
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Debug(2, "# of auth parts %d", parts.size());
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if ( parts.size() > 1 )
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mAuthenticator = new zm::Authenticator(parts[0], parts[1]);
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else
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mAuthenticator = new zm::Authenticator(parts[0], "");
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mThread = std::thread(&RtspThread::Run, this);
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}
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RtspThread::~RtspThread() {
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Stop();
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if (mThread.joinable())
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mThread.join();
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if ( mFormatContext ) {
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#if LIBAVFORMAT_VERSION_CHECK(52, 96, 0, 96, 0)
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avformat_free_context(mFormatContext);
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#else
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av_free_format_context(mFormatContext);
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#endif
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mFormatContext = nullptr;
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}
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if ( mSessDesc ) {
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delete mSessDesc;
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mSessDesc = nullptr;
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}
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delete mAuthenticator;
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mAuthenticator = nullptr;
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}
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void RtspThread::Run() {
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std::string message;
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std::string response;
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response.reserve(ZM_NETWORK_BUFSIZ);
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if ( !mRtspSocket.connect(mHost.c_str(), mPort.c_str()) )
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Fatal("Unable to connect RTSP socket");
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//Select select( 0.25 );
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//select.addReader( &mRtspSocket );
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//while ( select.wait() )
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//{
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//mRtspSocket.recv( response );
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//Debug( 4, "Drained %d bytes from RTSP socket", response.size() );
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//}
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bool authTried = false;
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if ( mMethod == RTP_RTSP_HTTP ) {
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if ( !mRtspSocket2.connect(mHost.c_str(), mPort.c_str()) )
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Fatal("Unable to connect auxiliary RTSP/HTTP socket");
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//Select select( 0.25 );
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//select.addReader( &mRtspSocket2 );
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//while ( select.wait() )
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//{
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//mRtspSocket2.recv( response );
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//Debug( 4, "Drained %d bytes from HTTP socket", response.size() );
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//}
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//possibly retry sending the message for authentication
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int respCode = -1;
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char respText[256];
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do {
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message = "GET "+mPath+" HTTP/1.0\r\n";
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message += "X-SessionCookie: "+mHttpSession+"\r\n";
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if ( mNeedAuth ) {
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message += mAuthenticator->getAuthHeader("GET", mPath);
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authTried = true;
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}
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message += "Accept: application/x-rtsp-tunnelled\r\n\r\n";
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Debug(2, "Sending HTTP message: %s", message.c_str());
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if ( mRtspSocket.send(message.c_str(), message.size()) != (int)message.length() ) {
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Error("Unable to send message '%s': %s", message.c_str(), strerror(errno));
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return;
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}
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if ( mRtspSocket.recv(response) < 0 ) {
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Error("Recv failed; %s", strerror(errno));
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return;
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}
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Debug(2, "Received HTTP response: %s (%zd bytes)", response.c_str(), response.size());
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float respVer = 0;
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respCode = -1;
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if ( sscanf(response.c_str(), "HTTP/%f %3d %[^\r\n]\r\n", &respVer, &respCode, respText) != 3 ) {
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if ( isalnum(response[0]) ) {
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Error("Response parse failure in '%s'", response.c_str());
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} else {
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Error("Response parse failure, %zd bytes follow", response.size());
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if ( response.size() )
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Hexdump(Logger::ERROR, response.data(), std::min(int(response.size()), 16));
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}
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return;
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}
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// If Server requests authentication, check WWW-Authenticate header and fill required fields
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// for requested authentication method
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if ( respCode == 401 && !authTried ) {
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mNeedAuth = true;
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mAuthenticator->checkAuthResponse(response);
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Debug(2, "Processed 401 response");
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mRtspSocket.close();
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if ( !mRtspSocket.connect(mHost.c_str(), mPort.c_str()) )
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Fatal("Unable to reconnect RTSP socket");
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Debug(2, "connection should be reopened now");
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}
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} while (respCode == 401 && !authTried);
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if ( respCode != 200 ) {
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Error("Unexpected response code %d, text is '%s'", respCode, respText);
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return;
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}
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message = "POST "+mPath+" HTTP/1.0\r\n";
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message += "X-SessionCookie: "+mHttpSession+"\r\n";
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if ( mNeedAuth )
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message += mAuthenticator->getAuthHeader("POST", mPath);
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message += "Content-Length: 32767\r\n";
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message += "Content-Type: application/x-rtsp-tunnelled\r\n";
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message += "\r\n";
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Debug(2, "Sending HTTP message: %s", message.c_str());
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if ( mRtspSocket2.send(message.c_str(), message.size()) != (int)message.length() ) {
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Error("Unable to send message '%s': %s", message.c_str(), strerror(errno));
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return;
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}
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} // end if ( mMethod == RTP_RTSP_HTTP )
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std::string localHost = "";
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int localPorts[2] = { 0, 0 };
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// Request supported RTSP commands by the server
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message = "OPTIONS "+mUrl+" RTSP/1.0\r\n";
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if ( !sendCommand(message) )
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return;
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// A negative return here may indicate auth failure, but we will have setup the auth mechanisms so we need to retry.
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if ( !recvResponse(response) ) {
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if ( mNeedAuth ) {
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Debug(2, "Resending OPTIONS due to possible auth requirement");
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if ( !sendCommand(message) )
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return;
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if ( !recvResponse(response) )
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return;
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} else {
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return;
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}
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} // end if failed response maybe due to auth
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char publicLine[256] = "";
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StringVector lines = Split(response, "\r\n");
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for ( size_t i = 0; i < lines.size(); i++ )
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sscanf(lines[i].c_str(), "Public: %[^\r\n]\r\n", publicLine);
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// Check if the server supports the GET_PARAMETER command
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// If yes, it is likely that the server will request this command as a keepalive message
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bool sendKeepalive = false;
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if ( publicLine[0] && strstr(publicLine, "GET_PARAMETER") )
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sendKeepalive = true;
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message = "DESCRIBE "+mUrl+" RTSP/1.0\r\n";
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bool res;
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do {
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if ( mNeedAuth )
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authTried = true;
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sendCommand(message);
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// FIXME Why sleep 1?
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usleep(10000);
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res = recvResponse(response);
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if ( !res && respCode==401 )
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mNeedAuth = true;
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} while (!res && respCode==401 && !authTried);
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const std::string endOfHeaders = "\r\n\r\n";
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size_t sdpStart = response.find(endOfHeaders);
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if ( sdpStart == std::string::npos )
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return;
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if ( mRtspDescribe ) {
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std::string DescHeader = response.substr(0, sdpStart);
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Debug(1, "Processing DESCRIBE response header '%s'", DescHeader.c_str());
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lines = Split(DescHeader, "\r\n");
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for ( size_t i = 0; i < lines.size(); i++ ) {
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// If the device sends us a url value for Content-Base in the response header, we should use that instead
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if ( ( lines[i].size() > 13 ) && ( lines[i].substr( 0, 13 ) == "Content-Base:" ) ) {
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mUrl = TrimSpaces(lines[i].substr(13));
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Info("Received new Content-Base in DESCRIBE response header. Updated device Url to: '%s'", mUrl.c_str() );
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break;
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}
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} // end foreach line
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} // end if mRtspDescribe
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sdpStart += endOfHeaders.length();
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std::string sdp = response.substr(sdpStart);
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Debug(1, "Processing SDP '%s'", sdp.c_str());
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try {
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mSessDesc = new SessionDescriptor( mUrl, sdp );
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mFormatContext = mSessDesc->generateFormatContext();
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} catch ( const Exception &e ) {
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Error(e.getMessage().c_str());
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return;
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}
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#if 0
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// New method using ffmpeg native functions
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std::string authUrl = mUrl;
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if ( !mAuth.empty() )
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authUrl.insert( authUrl.find( "://" )+3, mAuth+"@" );
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if ( av_open_input_file( &mFormatContext, authUrl.c_str(), nullptr, 0, nullptr ) != 0 )
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{
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Error( "Unable to open input '%s'", authUrl.c_str() );
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return( -1 );
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}
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#endif
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uint32_t rtpClock = 0;
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std::string trackUrl = mUrl;
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std::string controlUrl;
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_AVCODECID codecId = AV_CODEC_ID_NONE;
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if ( mFormatContext->nb_streams >= 1 ) {
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for ( unsigned int i = 0; i < mFormatContext->nb_streams; i++ ) {
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SessionDescriptor::MediaDescriptor *mediaDesc = mSessDesc->getStream(i);
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#if LIBAVFORMAT_VERSION_CHECK(57, 33, 0, 33, 0)
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if ( mFormatContext->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO )
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#elif (LIBAVCODEC_VERSION_CHECK(52, 64, 0, 64, 0) || LIBAVUTIL_VERSION_CHECK(50, 14, 0, 14, 0))
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if ( mFormatContext->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO )
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#else
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if ( mFormatContext->streams[i]->codec->codec_type == CODEC_TYPE_VIDEO )
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#endif
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{
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// Check if control Url is absolute or relative
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controlUrl = mediaDesc->getControlUrl();
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if (trackUrl == controlUrl) {
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trackUrl = controlUrl;
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} else {
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if ( *trackUrl.rbegin() != '/' ) {
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trackUrl += "/" + controlUrl;
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} else {
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trackUrl += controlUrl;
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}
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}
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rtpClock = mediaDesc->getClock();
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#if LIBAVFORMAT_VERSION_CHECK(57, 33, 0, 33, 0)
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codecId = mFormatContext->streams[i]->codecpar->codec_id;
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#else
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codecId = mFormatContext->streams[i]->codec->codec_id;
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#endif
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break;
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} // end if is video
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} // end foreach stream
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} // end if have stream
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switch ( mMethod ) {
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case RTP_UNICAST :
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localPorts[0] = requestPorts();
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localPorts[1] = localPorts[0]+1;
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message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP;unicast;client_port="
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+stringtf("%d", localPorts[0] )+"-"+stringtf( "%d", localPorts[1])+"\r\n";
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break;
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case RTP_MULTICAST :
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message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP;multicast\r\n";
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break;
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case RTP_RTSP :
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case RTP_RTSP_HTTP :
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message = "SETUP "+trackUrl+" RTSP/1.0\r\nTransport: RTP/AVP/TCP;unicast\r\n";
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break;
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default:
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Panic("Got unexpected method %d", mMethod);
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break;
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}
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if ( !sendCommand(message) )
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return;
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if ( !recvResponse(response) )
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return;
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lines = Split(response, "\r\n");
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std::string session;
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int timeout = 0;
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char transport[256] = "";
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for ( size_t i = 0; i < lines.size(); i++ ) {
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if ( ( lines[i].size() > 8 ) && ( lines[i].substr(0, 8) == "Session:" ) ) {
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StringVector sessionLine = Split(lines[i].substr(9), ";");
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session = TrimSpaces(sessionLine[0]);
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if ( sessionLine.size() == 2 )
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sscanf(TrimSpaces(sessionLine[1]).c_str(), "timeout=%d", &timeout);
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}
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sscanf(lines[i].c_str(), "Transport: %s", transport);
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|
}
|
|
|
|
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(), nullptr, 10 );
|
|
remotePorts[1] = strtol( ports[1].c_str(), nullptr, 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(), nullptr, 10 );
|
|
remoteChannels[1] = strtol( channels[1].c_str(), nullptr, 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(), nullptr, 10 );
|
|
localPorts[1] = strtol( ports[1].c_str(), nullptr, 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(), nullptr, 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;
|
|
if ( !recvResponse(response) )
|
|
return;
|
|
|
|
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(), nullptr, 10 );
|
|
} else if (StartsWith(parts[j], "rtptime=") ) {
|
|
StringVector subparts = Split(parts[j], "=");
|
|
rtpTime = strtol( subparts[1].c_str(), nullptr, 10 );
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
Debug( 2, "RTSP Seq is %d", seq );
|
|
Debug( 2, "RTSP Rtptime is %ld", rtpTime );
|
|
|
|
time_t lastKeepalive = time(nullptr);
|
|
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 );
|
|
|
|
while (!mTerminate) {
|
|
now = time(nullptr);
|
|
// 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;
|
|
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;
|
|
if ( !recvResponse( response ) )
|
|
return;
|
|
|
|
rtpDataThread.Stop();
|
|
rtpCtrlThread.Stop();
|
|
|
|
//rtpDataThread.kill( SIGTERM );
|
|
//rtpCtrlThread.kill( SIGTERM );
|
|
|
|
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 );
|
|
|
|
ZM::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 (!mTerminate && select.wait() >= 0) {
|
|
ZM::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] == '$' ) {
|
|
if ( buffer.size() < 4 )
|
|
break;
|
|
unsigned char channel = buffer[1];
|
|
unsigned short len = ntohs( *((unsigned short *)(buffer+2)) );
|
|
|
|
Debug( 4, "Got %d bytes left, expecting %d byte packet on channel %d", buffer.size(), len, channel );
|
|
if ( (unsigned short)buffer.size() < (len+4) ) {
|
|
Debug( 4, "Missing %d bytes, rereading", (len+4)-buffer.size() );
|
|
break;
|
|
}
|
|
if ( channel == remoteChannels[0] ) {
|
|
Debug(4, "Got %d bytes on data channel %d, packet length is %d", buffer.size(), channel, len);
|
|
Hexdump(4, (char *)buffer, 16);
|
|
rtpDataThread.recvPacket(buffer+4, len);
|
|
} else if ( channel == remoteChannels[1] ) {
|
|
// len = ntohs( *((unsigned short *)(buffer+2)) );
|
|
// Debug( 4, "Got %d bytes on control channel %d", nBytes, channel );
|
|
Debug(4, "Got %d bytes on control channel %d, packet length is %d", buffer.size(), channel, len);
|
|
Hexdump(4, (char *)buffer, 16);
|
|
rtpCtrlThread.recvPackets(buffer+4, len);
|
|
} else {
|
|
Error("Unexpected channel selector %d in RTSP interleaved data", buffer[1]);
|
|
buffer.clear();
|
|
break;
|
|
}
|
|
buffer.consume(len+4);
|
|
nBytes -= len+4;
|
|
} else {
|
|
if ( keepaliveResponse.compare( 0, keepaliveResponse.size(), (char *)buffer, keepaliveResponse.size() ) == 0 ) {
|
|
Debug( 4, "Got keepalive response '%s'", (char *)buffer );
|
|
//buffer.consume( keepaliveResponse.size() );
|
|
if ( char *charPtr = (char *)memchr( (char *)buffer, '$', 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(nullptr);
|
|
// 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;
|
|
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;
|
|
|
|
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 );
|
|
|
|
|
|
while (!mTerminate) {
|
|
// Send a keepalive message if the server supports this feature and we are close to the timeout expiration
|
|
if ( sendKeepalive && (timeout > 0) && ((time(nullptr)-lastKeepalive) > (timeout-5)) ) {
|
|
if ( !sendCommand( message ) )
|
|
return;
|
|
lastKeepalive = time(nullptr);
|
|
}
|
|
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;
|
|
if ( !recvResponse(response) )
|
|
return;
|
|
|
|
rtpDataThread.Stop();
|
|
rtpCtrlThread.Stop();
|
|
|
|
delete mSources[ssrc];
|
|
mSources.clear();
|
|
|
|
releasePorts( localPorts[0] );
|
|
break;
|
|
}
|
|
default:
|
|
Panic("Got unexpected method %d", mMethod);
|
|
break;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
#endif // HAVE_LIBAVFORMAT
|