[asterisk-bugs] [JIRA] (ASTERISK-28299) 481 Call/Transaction Does Not Exist on receiving MESSAGE event

[Brian J. Murrell (JIRA)]

Brian J. Murrell created ASTERISK-28299:
-------------------------------------------

             Summary: 481 Call/Transaction Does Not Exist on receiving MESSAGE event
                 Key: ASTERISK-28299
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28299
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Channels/chan_pjsip
    Affects Versions: 13.25.0
            Reporter: Brian J. Murrell


When my ITSP tries to send a (SIP SIMPLE) MESSAGE event to my Asterisk machine, Asterisk responds with {{SIP/2.0 481 Call/Transaction Does Not Exist}} which doesn't really make any sense to me for a single/one-off event like a MESSAGE event.  MESSAGE events don't seem to involve "transactions" which must exist.

My ITSP configuration:

{noformat}
[trunk]
type=registration
transport=transport-udp
outbound_auth=trunk-auth
server_uri=sip:itsp.example.com
client_uri=sip:userid at itsp.example.com

[trunk-auth]
type=auth
auth_type=userpass
password=********
username=userid

[trunk-endpoint](!)
type=endpoint
transport=transport-udp
context=from-trunk
message_context=messages
disallow=all
allow=ulaw
from_user=userid
outbound_auth=trunk-auth
auth=trunk-auth
send_pai=yes

[trunk-aor](!)
type=aor
qualify_frequency=15

[trunk-foo](trunk-endpoint)
aors=trunk-foo
[trunk-foo](trunk-aor)
contact=sip:userid at itsp.example.com:5060

[trunk-foo]
type=identify
endpoint=trunk-foo
match=itsp.example.com
{noformat}

The SIP conversation when the ITSP is trying to send the MESSAGE:

{noformat}
<--- Received SIP request (456 bytes) from UDP:10.0.0.1:5060 --->
MESSAGE sip:s at 10.75.22.8:5060 SIP/2.0
Via: SIP/2.0/UDP 10.0.0.1:5060;branch=z9hG4bK51d6d4da;rport
Max-Forwards: 70
From: "5555551212" <sip:5555551212 at itsp.example.com>;tag=as6c34cb69
To: <sip:s at 10.75.22.8:5060>
Contact: <sip:5555551212 at 10.0.0.1:5060>
Call-ID: 3e9735b4313e58f90b4b61c82f392c2e at 10.0.0.1:5060
CSeq: 102 MESSAGE
User-Agent: itsp.example.com
X-SMS-To: 5551234567
Content-Type: text/plain;charset=UTF-8
Content-Length: 1

test message
<--- Transmitting SIP response (515 bytes) to UDP:10.0.0.1:5060 --->
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 10.0.0.1:5060;rport=5060;received=10.0.0.1;branch=z9hG4bK51d6d4da
Call-ID: 3e9735b4313e58f90b4b61c82f392c2e at 10.0.0.1:5060
From: "5555551212" <sip:5555551212 at itsp.example.com>;tag=as6c34cb69
To: <sip:s at 10.75.22.8>;tag=z9hG4bK51d6d4da
CSeq: 102 MESSAGE
WWW-Authenticate: Digest realm="asterisk",nonce="1550441754/[redacted]",opaque="2c504a1035f74a1d",algorithm=md5,qop="auth"
Server: Asterisk PBX 13.25.0
Content-Length:  0


<--- Received SIP request (707 bytes) from UDP:10.0.0.1:5060 --->
MESSAGE sip:s at 10.75.22.8:5060 SIP/2.0
Via: SIP/2.0/UDP 10.0.0.1:5060;branch=z9hG4bK516e2ba7;rport
Max-Forwards: 70
From: "5555551212" <sip:5555551212 at itsp.example.com>;tag=as6c34cb69
To: <sip:s at 10.75.22.8:5060>;tag=z9hG4bK51d6d4da
Call-ID: 3e9735b4313e58f90b4b61c82f392c2e at 10.0.0.1:5060
CSeq: 103 MESSAGE
User-Agent: itsp.example.com
Proxy-Authorization: Digest username="userid", realm="asterisk", algorithm=MD5, uri="sip:s at 172.1.2.3:5060", nonce="1550441754/[redacted]", response="[redacted]", opaque="2c504a1035f74a1d", qop=auth, cnonce="544772bb", nc=00000002
X-SMS-To: 5551234567
Content-Type: text/plain;charset=UTF-8
Content-Length: 1

c
<--- Transmitting SIP response (388 bytes) to UDP:10.0.0.1:5060 --->
SIP/2.0 481 Call/Transaction Does Not Exist
Via: SIP/2.0/UDP 10.0.0.1:5060;rport=5060;received=10.0.0.1;branch=z9hG4bK516e2ba7
Call-ID: 3e9735b4313e58f90b4b61c82f392c2e at 10.0.0.1:5060
From: "5555551212" <sip:5555551212 at itsp.example.com>;tag=as6c34cb69
To: <sip:s at 10.75.22.8>;tag=z9hG4bK51d6d4da
CSeq: 103 MESSAGE
Server: Asterisk PBX 13.25.0
Content-Length:  0
{noformat}



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