
<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div>When a client sends a SUBSCRIBE with Expires: 0, Kamailio responds correctly with a "202 OK".<br></div><div><span></span></div><div><span><span><br></span></span></div><div>But then Kamailio sends a NOTIFY to the same client with "<span>Subscription-State: terminated;reason=timeout".</span></div><div><span><br></span></div><div>The client rejects this NOTIFY with a "<span>481 Dialog/Transaction Does Not Exist".</span></div><div><span><br></span></div><div><span>Why does Kamailio send this NOTIFY, and is there any way to fix or disable it because it's always rejected by the client?</span></div><div><span><br></span></div><div><span>The client is IMSDroid, and Kamailio is <span>5.2.2 with a default configuration.</span></span></div><div><span><br></span></div><div><br></div><div>Packet 1 = Client sending SUBSCRIBE with Expires: 0</div><div><br></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><span><div>SUBSCRIBE sip:X.X.X.X:443;transport=tcp SIP/2.0</div></span></div><div><span><div>Via: SIP/2.0/TCP 192.168.0.21:45336;branch=z9hG4bK-670576127</div></span></div><div><span><div>From: <sip:username@domain.com>;tag=1372208921</div></span></div><div><span><div>To: <sip:kamailio.domain.com>;tag=c4eb72dabf44e7588b972bd3b454ea11-0cd6</div></span></div><div><span><div>Contact: <sip:username@192.168.0.21:45336;transport=tcp></div></span></div><div><span><div>Call-ID: e8cffa8f-948d-eb99-69ca-c9f18bdf11a0</div></span></div><div><span><div>CSeq: 1321654295 SUBSCRIBE</div></span></div><div><span><div>Expires: 0</div></span></div><div><span><div>Content-Length: 299</div></span></div><div><span><div>Max-Forwards: 70</div></span></div><div><span><div>Allow: INVITE, ACK, CANCEL, BYE, MESSAGE, OPTIONS, NOTIFY, PRACK, UPDATE, REFER</div></span></div><div><span><div>Accept: application/pidf+xml</div></span></div><div><span><div>Event: presence</div></span></div></blockquote><div><br></div><div><br></div><div>Packet 2 = Kamailio responding with 202 OK</div><div><br></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><span><div>SIP/2.0 202 OK</div></span></div><div><span><div>Via: SIP/2.0/TCP 192.168.0.21:45336;branch=z9hG4bK-670576127</div></span></div><div><span><div>From: <sip:username@domain.com>;tag=1372208921</div></span></div><div><span><div>To: <sip:kamailio@domain.com>;tag=c4eb72dabf44e7588b972bd3b454ea11-0cd6</div></span></div><div><span><div>Call-ID: e8cffa8f-948d-eb99-69ca-c9f18bdf11a0</div></span></div><div><span><div>CSeq: 1321654295 SUBSCRIBE</div></span></div><div><span><div>Expires: 0</div></span></div><div><span><div>Contact: <sip:X.X.X.X:443;transport=tcp></div></span></div><div><span><div>Server: kamailio (5.2.2 (x86_64/linux))</div></span></div><div><span><div>Content-Length: 0</div></span></div></blockquote><div><span><div><br></div><div><br></div></span>Packet 3 = Kamailio sending a NOTIFY</div><div><br></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><span><div>NOTIFY sip:username@192.168.0.21:45336;transport=tcp SIP/2.0</div></span></div><div><span><div>Via: SIP/2.0/TCP X.X.X.X:443;branch=z9hG4bKefe7.5f8ec435000000000000000000000000.0</div></span></div><div><span><div>To: <sip:username@domain.com>;tag=1372208921</div></span></div><div><span><div>From: <sip:kamailio@domain.com>;tag=c4eb72dabf44e7588b972bd3b454ea11-0cd6</div></span></div><div><span><div>CSeq: 3 NOTIFY</div></span></div><div><span><div>Call-ID: e8cffa8f-948d-eb99-69ca-c9f18bdf11a0</div></span></div><div><span><div>Content-Length: 0</div></span></div><div><span><div>Max-Forwards: 70</div></span></div><div><span><div>Event: presence</div></span></div><div><span><div>Contact: <sip:X.X.X.X:443;transport=tcp></div></span></div><div><span><div>Subscription-State: terminated;reason=timeout</div></span></div></blockquote><div><span><div><br></div><div><br></div></span>Packet 4 = Client responding to the NOTIFY with "<span>481 Dialog/Transaction Does Not Exist"</span></div><div><span><br></span></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><span><span><div>SIP/2.0 481 Dialog/Transaction Does Not Exist</div></span></span></div><div><span><span><div>Via: SIP/2.0/TCP X.X.X.X:443;branch=z9hG4bKefe7.5f8ec435000000000000000000000000.0</div></span></span></div><div><span><span><div>From: <sip:kamailio@domain.com>;tag=c4eb72dabf44e7588b972bd3b454ea11-0cd6</div></span></span></div><div><span><span><div>To: <sip:username@domain.com>;tag=1372208921</div></span></span></div><div><span><span><div>Call-ID: e8cffa8f-948d-eb99-69ca-c9f18bdf11a0</div></span></span></div><div><span><span><div>CSeq: 3 NOTIFY</div></span></span></div><div><span><span><div>Content-Length: 0</div></span></span></div></blockquote><div><span><br></span></div><div><span><br></span></div><div><span>There are two entries in the Kamailio log:</span></div><div><span><br></span></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><span><span><div>INFO: {1 1321654295 SUBSCRIBE e8cffa8f-948d-eb99-69ca-c9f18bdf11a0} presence [notify.c:1614]: send_notify_request(): NOTIFY sip:username@domain.com via sip:Y.Y.Y.Y:45336;transport=tcp on behalf of sip:kamailio.domain.com for event presence : e8cffa8f-948d-eb99-69ca-c9f18bdf11a0</div></span></span></div><div><span><span><div><br></div></span></span></div><div><span><span><div>ERROR: {2 3 NOTIFY e8cffa8f-948d-eb99-69ca-c9f18bdf11a0} presence [subscribe.c:497]: delete_subs(): Failed to delete subscription from memory [slot: 174 ev: sip:kamailio.domain.com pu: presence ci: e8cffa8f-948d-eb99-69ca-c9f18bdf11a0 ft: 1372208921 tt: c4eb72dabf44e7588b972bd3b454ea11-0cd6]</div></span></span></div></blockquote><div><span><span><div><br></div><div><br></div><div>These are the presence settings in the Kamailio config file:</div><div><br></div></span></span></div><blockquote style="margin: 0 0 0 40px; border: none; padding: 0px;"><div><span><span><div><span><div>#!ifdef WITH_PRESENCE</div></span></div></span></span></div><div><span><span><span><div># ----- presence params -----</div></span></span></span></div><div><span><span><span><div>modparam("presence", "db_url", DBURL)</div></span></span></span></div><div><span><span><span><div>modparam("presence", "send_fast_notify", 0)</div></span></span></span></div><div><span><span><span><div><br></div></span></span></span></div><div><span><span><span><div># ----- presence_xml params -----</div></span></span></span></div><div><span><span><span><div>modparam("presence_xml", "db_url", DBURL)</div></span></span></span></div><div><span><span><span><div>modparam("presence_xml", "force_active", 1)</div></span></span></span></div><div><span><span><span><div>modparam("presence_xml", "force_dummy_presence", 0)</div></span></span></span></div><div><span><span><span><div>#!endif</div></span></span></span></div></blockquote><div><span><span><span><div><br></div><div><br></div></span>Appreciate your help.</span></span></div><div><br></div></div></body></html>