[Asterisk-bugs] [Asterisk 0010232]: chan_iax2 qualify marks peers unreachable when they are reachable

[noreply at bugs.digium.com]

A NOTE has been added to this issue. 
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http://bugs.digium.com/view.php?id=10232 
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Reported By:                sim
Assigned To:                
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Project:                    Asterisk
Issue ID:                   10232
Category:                   Channels/chan_iax2
Reproducibility:            always
Severity:                   major
Priority:                   normal
Status:                     feedback
Asterisk Version:           1.4.8  
SVN Branch (only for SVN checkouts, not tarball releases): N/A  
SVN Revision (number only!):  
Disclaimer on File?:        No 
Request Review:              
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Date Submitted:             07-18-2007 16:51 CDT
Last Modified:              07-18-2007 17:49 CDT
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Summary:                    chan_iax2 qualify marks peers unreachable when they
are reachable
Description: 
while running the 1.4 branch (and the 1.0 branch), we have noticed that the
IAX2 qualify testing has often been producing false unreachable messages. 
Calls active at the time continue, pings continue without a single drop,
etc.

Attached is a trace of an otherwise-idle session between two Asterisk
servers approximately 78 ms apart, running 1.4.7.1 locally and 1.4.8
remotely.

See the log entries vs the trace timestamps.  The trace was run on the
10.100.0.60 host.  It seems the received PONG is either ignored or not
ACKed properly.  The remote end retransmits an identical PONG, to which
INVAL is sent.  Two seconds after that, UNREACHABLE is logged.  The next
POKE succeeds and the qualification is satisfied.
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---------------------------------------------------------------------- 
 sim - 07-18-07 17:49  
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hey russell,

The above log is tshark output, and the attached 10.50.255.251.log file is
a pcap file which was the result of a tcpdump running on the 10.100.0.60
host with "host 10.50.255.251" as the BPF arguments. 

Issue History 
Date Modified   Username       Field                    Change               
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07-18-07 17:49  sim            Note Added: 0067561                          
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