Re: [Serusers] RTP being sent to wrong port

I found the docs in WIKI. So in short, symmetric RTP is when a client uses the same socket to send/receive RTP streams. I suppose my client is not symmetric then. I'll try to figure out what I can do about it :) Thanks for the info! On 9/20/06, Andrey Kuprianov < andrey.kouprianov(a)gmail.com&gt; wrote: > Forgive my ignorance. I know the term "symmetric client", but i dont > really know what that means. Can u please explain or just give me some > doc/rfc to read? :) > > Andrey. > > On 9/20/06, Vamsi Pottangi &lt;vamsipottangi(a)gmail.com&gt; wrote: > > > > Is your application symmetric? > > > > > > On 9/20/06, Andrey Kuprianov &lt;andrey.kouprianov(a)gmail.com&gt; wrote: > > > > > Hi, > > > > Im facing this problem for a few days already. Hope someone might have > > an idea or two. It's a long email too, btw. > > > > Im testing my app behind NAT's with SER-0.9.6 + mediaproxy + Asterisk > > (conf server). While X-Lite works *fine* and I get 2 way audio always, > > my app seems to have some kind of weird bug and I end up with 1 way > > audio stream. > > > > Here's the thing. Application starts receiver and transmitter on > > completely different ports. Here's SDP for remote and local machines > > (public IP's been x'ed by myself, of course): > > > > This one's sent in INVITE message to SER ==> > > 69563 DEBUG media.MediaManager - Local SDP: (this one's from local

> > v=0 > > o=xps 1158739216750 1158739216757 IN IP4 192.168.1.3 > > s=MC > > c=IN IP4 192.168.1.3 > > t=0 0 > > m=audio 25000 RTP/AVP 0 8 > > a=rtpmap:0 PCMU/8000 > > a=rtpmap:8 PCMA/8000 > > a=sendrecv > > > > This one's sent with 200 OK from SER ==> > > 69563 DEBUG media.MediaManager - Remote SDP: > > v=0 > > o=root 2500 2500 IN IP4 203.159.x.x > > s=session > > c=IN IP4 203.159.x.x > > t=0 0 > > m=audio 30004 RTP/AVP 0 8 > > a=rtpmap:0 PCMU/8000 > > a=rtpmap:8 PCMA/8000 > > a=silenceSupp:off - - - - > > > > The further log shows that transmitters and receivers have started on > > the proper IP/port ==> > > > > 69594 DEBUG media.AVReceiver - Start listening for RTP @ addr: > > 192.168.1.3 port: 25000 ttl: 1 > > 69657 DEBUG media.AVTransmitter - Created transmitter for: > > [203.159.x.x] at ports: [30004] encoded as: [[ULAW/rtp, alaw]] > > 69657 DEBUG media.MediaManager - Starting transmission > > 69672 DEBUG media.AVTransmitter - Track 0 is set to transmit as: > > ULAW/rtp, 8000.0 Hz, 8-bit, Mono, FrameSize=8 bits > > 69860 INFO media.AVTransmitter - Binded to port 30004 > > 69875 DEBUG media.AVTransmitter - Started transmitting track 0 encoded > > as ULAW/rtp @ [ 203.159.x.x]:30004 > > > > Nevertheless, the Ethereal capture shows that mediaproxy sends the > > stream NOT to port 25000 (local port), but to port 30004 (remote > > port)!! Why? This is not the case with X-Lite, however. Xlite captures > > show that streams are sent to proper ports always. Btw, Im attaching > > SIP+RTP Ethereal captures with this mail. Please, take a look. > > > > I also want to mention, that this doesnt happen with my app. for all > > the NATed nets. In some nets it works fine, but not in this one. Just > > weird. > > > > Please, let me know if anyone has ideas or hints regarding this

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