For debugging purpose, WCS includes the utility to capture RTSP stream from file obtained by tcpdump or any other IP packets dump collection tool. Then, the stream is published via RTSP, emulating IP camera. In its turn, WSC can capture RTSP stream from this "camera". The feature is useful when RTSP-source itself is not accessible, but there are dump files of stream from that source. The utility works with RTSP interleaved session files only.
To launch utility the following parameters must be set:
- a directory containing dump files on server
- a port to listen RTSP incoming connections
- a source port for the stream dumped
- a condition to handle dropped packets
Launch example:
java -Dcom.flashphoner.fms.AppHome=/usr/local/FlashphonerWebCallServer -cp /usr/local/FlashphonerWebCallServer/lib/wcs-core.jar:/usr/local/FlashphonerWebCallServer/lib/* com.flashphoner.tools.rtsp.RtspPcapServer /usr/local/FlashphonerWebCallServer/pcaps 3554 2554 true
Where
/usr/local/FlashphonerWebCallServer/pcaps - directory on server3554
- port on which IP camera will be emulated2554
- source port for dump file (real IP camera)true
- ignore packets dropped while collecting dump file.
If WCS is launched on this server, the second parameter port number should be out of ranges used by WCS. The stream that will be available on this port, will be named as the stream in the dump file.
The utility prints all information to stdout. For example, if there is one file log.pcap in /usr/local/FlashphonerWebCallServer/pcaps directory, the following will be printed to console:
04:35:20,721 INFO RtspPcapServer - Starting 04:35:22,244 INFO RtspPcapServer - Available sources: 04:35:22,245 INFO RtspPcapServer - Source{path=/usr/local/FlashphonerWebCallServer/pcaps/log.pcap, pcap=io.pkts.Pcap@5a39699c, stream=RTSPStream{config=8, data=22052, streamName='live1.sdp'}} 04:35:22,245 INFO RtspPcapServer - Starting PCAP RTSP server 04:35:22,407 INFO RtspPcapServer - Listening PCAP RTSP on address /0.0.0.0 port 3554
In this case, stream can be captured from address
rtsp://hostname:3554/live1.sdp
where hostname is server name with utility running.
If the directory contains a number of dump files, the stream names should not be the same, only one of such streams will be captured.
RTSP connection redirection testing
To test RTSP connection redirection using IP camera emulator, it is necessary to set the method in flashphoner.properties file, in response on which 302 Moved Temporarily should be returned, for example
rtsp_pcap_server_redirect_method=OPTIONS
and IP camera address to which RTSP connection should be redirected, for example
rtsp_pcap_server_handler_redirect_url=rtsp://yourcamera:1935/live/sys3.stream
Then, run RTSP dump file capture utility and connect to stream from dump file as described above. RTSP connection will be redirected to address defined.