program running on some machine and some not wireshark report

Question

i made an application that stream an video from a live source to a particular ip address,but when i open the network stream through vlc it says unidentified format.My wireshark shows the following report:-

446 3.534718    192.168.0.1 192.168.0.2 IPv4    1314    Fragmented IP protocol (proto=UDP 0x11, off=0, ID=164f) [Reassembled in #447]
447 3.534773    192.168.0.1 192.168.0.2 UDP 90  Source port: 18886  Destination port: 18886
448 3.534785    192.168.0.2 192.168.0.1 ICMP    190 Destination unreachable (Port unreachable)
449 3.534804    192.168.0.2 192.168.0.1 ICMP    190 Destination unreachable (Port unreachable)

This program is running on some machines and not running on my machine what might be the cause of the problem?

Answer 1

0

"Destination unreachachble (Port unreachable)" means, that there is no service listening on UDP port (18886 ??) on the machine that reports the problem (192.168.0.2). Pleaase check that with "netstat -na" on 192.168.0.2. If it's a dynamic port, then something is wrong with your streaming config.

Regards
Kurt

answered 09 May '12, 05:45

Kurt Knochner ♦
24.8k●10●39●237
accept rate: 15%

hey Kurt Thanks for the reply,but i had an query that on machine(192.168.0.2),i ran vlc player to open network stream,so vlc player must be listening that....

(09 May '12, 05:59) tarun

and its too a static port..

(09 May '12, 06:14) tarun

did you check with 'netstat -na' ?

(09 May '12, 07:06) Kurt Knochner ♦

C:\Documents and Settings\Administrator>netstat -na Active Connections Proto Local Address Foreign Address State TCP 0.0.0.0:135 0.0.0.0:0 LISTENING TCP 0.0.0.0:445 0.0.0.0:0 LISTENING TCP 0.0.0.0:2222 0.0.0.0:0 LISTENING TCP 0.0.0.0:2226 0.0.0.0:0 LISTENING TCP 127.0.0.1:1025 0.0.0.0:0 LISTENING TCP 127.0.0.1:1796 127.0.0.1:2226 TIME_WAIT TCP 127.0.0.1:1797 127.0.0.1:2226 TIME_WAIT TCP 127.0.0.1:2227 0.0.0.0:0 LISTENING TCP 127.0.0.1:2228 0.0.0.0:0 LISTENING TCP 127.0.0.1:5152 0.0.0.0:0 LISTENING TCP 192.168.0.2:139 0.0.0.0:0 LISTENING UDP 0.0.0.0:445 : UDP 127.0.0.1:123 : UDP 192.168.0.2:123 : UDP 192.168.0.2:137 : UDP 192.168.0.2:138 :

C:\Documents and Settings\Administrator>

(09 May ‘12, 07:32) tarun

I don’t see udp port 18886, so there is no process ‘accepting data’ on that port. I really think this is a VLC config problem.

(09 May ‘12, 13:50) Kurt Knochner ♦