<div dir="ltr"><p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">Hi,</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:'Times New Roman',serif"> </span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">I used the Live 555 to create an RTSP client
that receives video a stream of RTP over RTSP (RTP over TCP).</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">Server is not in my control and as far as I
know it was developed using Live555 as well.</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">My client is retrieving video in very high
rate (around 65-170 fps, 3-9 time faster than the capture rate) and store it
for later processing.</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">The client is implemented in VS2010 and run
under Win7.</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif"> </span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">I have the following strange phenomena:</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">On a couple of PCs the client can work for
hours without any problem.</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">However on other PCs connected to the same
server, on the same network, after about 1-3 minutes, for each ~3-5 frames
(groups of about 4-6 packets), the RTP packets are confused to be RTSP - as if
the '$' is not identified.</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif"> </span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">In
the beginning, I tried to understand why SocketDescriptor::tcpReadHandler1</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif"> (in RTPInterface.cpp)  pass the control to the RTSP handler. </span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">However, I also captured the traffic with
WireShark and saw the same confusion there!</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif"> </span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">Attached please find a small capture file, if
it is decoded as RTPS, the wrongfully interpretation can be seen in in packets 17-20
</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">(server IP 10.0.0.213 client 10.0.0.111)</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif"> </span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">If any other information is, larger capture
file, etc.. is required – I will be happy to provide it.</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">I will appreciate any help, hint or idea.</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif"> </span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">Thanks,</span></p>

<p class="" style="margin-bottom:0.0001pt;direction:ltr"><span style="font-size:12pt;font-family:Arial,sans-serif">YocoSha</span></p></div>