[asterisk-users] iax packet loss again.

[Darryl Moore]

I saw this thread which is very similar to my issue, though I cannot
solve mine with iptables.

http://lists.digium.com/pipermail/asterisk-users/2013-September/280429.html



Using asterisk 11.5, IAX does not seem to be able to receive any
packets. 

My IP tables looks like this:

root at dlaptop:/home/darryl# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         


could it be any simpler????





with IAX debugging on in asterisk I see this in the console:

Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
POKE   
   Timestamp: 00015ms  SCall: 00525  DCall: 00000 [184.75.215.106:4569]

Tx-Frame Retry[000] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
POKE   
   Timestamp: 00014ms  SCall: 00890  DCall: 00000 [67.205.74.184:4569]

Tx-Frame Retry[001] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
POKE   
   Timestamp: 00010ms  SCall: 05381  DCall: 00000 [99.245.204.155:4569]

Tx-Frame Retry[001] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
POKE   
   Timestamp: 00015ms  SCall: 00525  DCall: 00000 [184.75.215.106:4569]

Tx-Frame Retry[001] -- OSeqno: 000 ISeqno: 000 Type: IAX     Subclass:
POKE   
   Timestamp: 00014ms  SCall: 00890  DCall: 00000 [67.205.74.184:4569]


Notice there are no Rx-Frames, and my peer table looks like this:
dlaptop*CLI> iax2 show peers
Name/Username    Host                 Mask             Port
Status      Description                     
voipms/121322_i  184.75.215.106  (S)  255.255.255.255  4569
UNREACHABLE                                 
voipms2/121322_  67.205.74.184   (S)  255.255.255.255  4569
UNREACHABLE                                 
2222/2222        99.245.204.155  (S)  255.255.255.255  4569
UNREACHABLE                                 
3 iax2 peers [0 online, 3 offline, 0 unmonitored]




tcpdump can see all the packets though:
17:23:35.840421 IP 184-75-215-106.amanah.com.iax > dlaptop-2.local.iax:
UDP, length 12
17:23:35.872904 IP 67.205.74.184.iax > dlaptop-2.local.iax: UDP, length
12
17:23:36.790984 IP dlaptop-2.local.iax >
CPEc47d4f8848e7-CM0026f30cc55d.cpe.net.cable.rogers.com.iax: UDP, length
14
17:23:36.792680 IP
CPEc47d4f8848e7-CM0026f30cc55d.cpe.net.cable.rogers.com.iax >
dlaptop-2.local.iax: UDP, length 12
17:23:36.814493 IP dlaptop-2.local.iax > 184-75-215-106.amanah.com.iax:
UDP, length 14
17:23:36.834119 IP dlaptop-2.local.iax > 67.205.74.184.iax: UDP, length
14
17:23:36.842537 IP 184-75-215-106.amanah.com.iax > dlaptop-2.local.iax:
UDP, length 12
17:23:36.877078 IP 67.205.74.184.iax > dlaptop-2.local.iax: UDP, length
12
17:23:43.836844 IP dlaptop-2.local.iax >
CPEc47d4f8848e7-CM0026f30cc55d.cpe.net.cable.rogers.com.iax: UDP, length
24
17:23:43.838705 IP
CPEc47d4f8848e7-CM0026f30cc55d.cpe.net.cable.rogers.com.iax >
dlaptop-2.local.iax: UDP, length 65


but my socket buffers are backing up horribly:

root at dlaptop:/home/darryl# lsof -n -P -Tq | grep UDP | grep 4569
lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file
system /home/darryl/.gvfs
      Output information may be incomplete.
asterisk   2575            root    8u     IPv4  334734592         0t0
UDP *:4569 (QR=163904 QS=0)


Am i crazy? Is there something as simple as iptables that I missed? Or
is there some kind of bug in Asterisk which is being missed?

I've only had this issue on two machines which I've compiled 11.5 on.
Generally all my production machines are using the stock version 1.8
which is in the Ubuntu 12.04 repository.


Unloading and reloading the chan_iax module only has the effect of
resetting the receive queue size in lsof. Anyone have any ideas what I
could possibly be missing here? Sip works fine by the way.


Thanks
Darryl