RE: [Ccrtp-devel] Demo program "audiotx" dropping RTP packets

[Robert Szelepcsenyi]

Hi,


I have finally compiled the library on FreeBSD. For some reason the
compilation process seems to think there is glibc present on the system
(which is not on FreeBSD) and throws in a prototype for getopt.h, which
conflicts with the standard library (stdlib). I commented out the offending
declaration in getopt.h to get over the problematic point (a symptomatic
treatment, but helped me to solve the problem quickly).

However, the demo program behaves EXACTLY THE SAME. Each second for about
1/2 second there are no packets. I used the demo program without any
modification.

The problem might be in the CommonCPP library. However, I do not believe
that very much, because the demo program keeps printing out dots
continuously also for the packets that get lost. I would guess at some
buffer or timestamp problem.


Robert Szelepcsenyi

Output from tcpdump:


020023 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019992 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019975 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
020011 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
020000 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
020289 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019743 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
480042 127.0.0.1.3990 > 127.0.0.1.6102: udp 172 <=== !!!
019940 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019973 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
020055 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
020082 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019900 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019988 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019995 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
020580 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019765 127.0.0.1.3990 > 127.0.0.1.6102: udp 172
019982 127.0.0.1.3990 > 127.0.0.1.6102: udp 172