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miconda / sipexer

Modern and flexible SIP/VoIP cli tool
GNU General Public License v3.0
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Getting write error #13

Closed davidcsi closed 2 years ago

davidcsi commented 2 years ago

Hello,

I'm getting this intermittently, can't figure out why...

[error] [sipexer.go:1389] main.SIPExerSendBytes(): error writing - write udp4 172.26.210.130:50600->172.26.209.100:5060: i/o timeout

when call is answered. This is my command:

./sipexer -invite -vl 9 -co -com \
    -fuser '+numberFrom' \
    -tuser numberTo \
    -rn numberTo \
    -cb \
    -sw 1000 -sd -timer-t1 60000 -su \
    udp:172.26.209.100:5060
miconda commented 2 years ago

The error comes from golang core lib, is the application listening on 172.26.209.100:5060 still running?

There is sort of connected udp which leverages icmp for detecting when the target is available or not.

davidcsi commented 2 years ago

Thanks Daniel, yes it is. It's a kamailio.

miconda commented 2 years ago

Try to capture icmp packets with wireshark/tcpdump and see if you notice anything suspect there.

miconda commented 2 years ago

You should also watch the sockets with netstat and see if the write queue for 172.26.210.130:50600 is high, write on udp socket can fail if its buffer is full and cannot push more there.

miconda commented 2 years ago

I am going to close this one if no further details are posted.