Your new SIP proxy is up and running. You are successfully handling most NAT issues. You have read about many new interesting things, nonetheless you are happy to close this chapter for a while. Keepalives, STUN, Mediaproxy: you suffered a lot. You learned a lot. But right now, finally everything seems to run fine.
Time to sit back and relax? Probably not. Sooner or later you'll stumble over the next fustrating issue: fragmented UDP packets. While one might argue that SIP packets are allowed to be 64 kBytes large and fragmentation has been part of IP since it's very early days, daily practice teaches us that we are definitively not living in the same perfect world as RFC3261 authors seem to have lived in."Smaller SIP packets to avoid fragmentation" vollständig lesen »