Error: The received SIP Message is not as long as the Content-Length specified.

[Karl]

I have an Axon 1.20 server, 5 expresstalk clients and an Intertex IX-67 SIP router.

 

The IX-67 is totally SIP transparent and claims to be fully compatible. I am running the latest firmware for the router. We have never has any SIP issues with this router before, so I doubt the router is at fault here.

 

Whenever I try to make a SIP call, the guy on the other side can't hear me, but I can hear them. The router SIP logs say:

 

Recv 4 bytes from 192.168.0.101, socket 21

The received SIP Message is not as long as the Content-Length specified.

Invalid data received at SIP port

Parse error at '' in message from 192.168.0.101, at line:

 

192.168.0.101 is my Axon server. Is this a bug in Axon? Line 2 in the error message would suggest something is wrong with the package headers?

 

Edit: Upon further inspection this seems to have something to do with STUN keepalive packets. Are they malformed somehow?

[Karl]

I'm an idiot and the call problems were related to an incorrect outbound proxy. I still think there might be a problem with the STUN packets, though.