[asterisk-users] __sip_xmit Returned -1 Invalid Argument

[Brian Wilson]

I've been getting slammed with these messages on my console lately.

ed -1: Invalid argument
[2016-05-31 10:09:40] WARNING[16249]: chan_sip.c:3775 __sip_xmit: sip_xmit
of 0x7f05140803f0 (len 559) to 192.168.1.45:0 returned -1: Invalid argument
[2016-05-31 10:09:40] WARNING[16249]: chan_sip.c:3775 __sip_xmit: sip_xmit
of 0x7f05140803f0 (len 559) to 192.168.1.45:0 returned -1: Invalid argument
[
etc etc etc comes in bunches of about 10, all with same IP address in that
bunch.
Does not appear to be related to one phone -- I have a mix of devices.
They appear to happen when a phone registers. The debug message "Invalid
argument" is not helping me, I wish it were more descriptive. I peeked at
the code and there is no indication what __sip_xmit() does (like all
Asterisk code I have looked at so far), looks like it might do MANY things.

It does not appear to be tied to one version, I have tried 13.7.2, 13.8.0,
13.9.1

I don't see anything glaring when I "sip set debug on" and "core set debug
10" -- just more messages that I don't understand.

Like this ----------------------

---
[2016-05-31 10:10:39] WARNING[16249]: chan_sip.c:3775 __sip_xmit: sip_xmit
of 0x7f0514050430 (len 559) to 192.168.1.45:0 returned -1: Invalid argument
Retransmitting #5 (no NAT) to 192.168.1.45:0:
NOTIFY sip:spa2000 at 192.168.1.45:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.2:5060;branch=z9hG4bK0d196419
Max-Forwards: 70
From: "asterisk" <sip:asterisk at 192.168.1.2>;tag=as522feace
To: <sip:spa2000 at 192.168.1.45:5060>
Contact: <sip:asterisk at 192.168.1.2:5060>
Call-ID: 0d6963aa7350ce3274e7af420c35daa6 at 192.168.1.2:5060
CSeq: 102 NOTIFY
User-Agent: Asterisk PBX 13.9.1
Event: message-summary
Content-Type: application/simple-message-summary
Content-Length: 91

Messages-Waiting: no
Message-Account: sip:asterisk at 192.168.1.2
Voice-Message: 0/0 (0/0)

------
I am guessing this is some apparently unrelated and undocumented side
effect of a setting I have changed recently but have not been successful
chasing it down so far. I have this happening on two different servers now.

-- 
Brian Wilson
Wildsong 707-827-0001
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