[OpenSIPS-Devel] rls_handle_notify() does not recognize dialog

[Juha Heinanen]

i did some rls tests.  first i create a buddy list sip:jh-buddies at test.fi
that currently has only one buddy test at test.fi.

then jh used sip_subscribe_rls to subscribe to jh-buddies.  wireshark
shows how rls server upon receiving subscribe send subscribe to
sip:test at test.fi, how presence server replies to it with 200 ok followed
by in-dialog notify.  when rls_handle_notify() handles this notify, it
returns 2 meaning that "the Notify did not belog to a dialog initiated
by the RLS server.".

why is that?  the packets are below starting from subscribe sent by rls
server.  "404 not found" comes from this piece of config code:

    $var(ret_code) = rls_handle_notify();
    if ($var(ret_code) == 1) exit;
    if ($var(ret_code) == 2) {
        sl_send_reply("404", "Not found");
	exit;
    };

-- juha

---------------------------------------------------------------------

No.     Time            Source                Destination           Protocol Info
      9 15:53:46.955023 127.0.0.1             127.0.0.1             SIP      Request: SUBSCRIBE sip:sip:test at test.fi

Frame 9 (448 bytes on wire, 448 bytes captured)
Linux cooked capture
Internet Protocol, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1)
User Datagram Protocol, Src Port: qcp (5082), Dst Port: qcp (5082)
Session Initiation Protocol
    Request-Line: SUBSCRIBE sip:sip:test at test.fi SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 127.0.0.1:5082;branch=z9hG4bK8d99.0df60be7.0
        To: sip:sip:test at test.fi
        From: <sip:jh at test.fi>;tag=374ba85b6c1b7e45caf839d18042c8ae-ec2b
        CSeq: 10 SUBSCRIBE
        Call-ID: 7bffc7ef-21244 at 127.0.0.1
        Content-Length: 0
        User-Agent: OpenSIPS (1.5.2-notls (i386/linux))
        Max-Forwards: 70
        Event: presence
        Contact: <sip:rls at 127.0.0.1:5082>
        Expires: 610

No.     Time            Source                Destination           Protocol Info
     10 15:53:46.956119 127.0.0.1             127.0.0.1             SIP      Status: 202 OK

Frame 10 (423 bytes on wire, 423 bytes captured)
Linux cooked capture
Internet Protocol, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1)
User Datagram Protocol, Src Port: qcp (5082), Dst Port: qcp (5082)
Session Initiation Protocol
    Status-Line: SIP/2.0 202 OK
    Message Header
        Via: SIP/2.0/UDP 127.0.0.1:5082;branch=z9hG4bK8d99.0df60be7.0
        To: sip:sip:test at test.fi;tag=48de7c3cb9f0a00e953b10ae4e49e9de-3f5d
        From: <sip:jh at test.fi>;tag=374ba85b6c1b7e45caf839d18042c8ae-ec2b
        CSeq: 10 SUBSCRIBE
        Call-ID: 7bffc7ef-21244 at 127.0.0.1
        Expires: 610
        Contact: <sip:127.0.0.1:5082>
        Server: OpenSIPS (1.5.2-notls (i386/linux))
        Content-Length: 0

No.     Time            Source                Destination           Protocol Info
     11 15:53:46.956273 127.0.0.1             127.0.0.1             SIP      Request: NOTIFY sip:rls at 127.0.0.1:5082

Frame 11 (505 bytes on wire, 505 bytes captured)
Linux cooked capture
Internet Protocol, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1)
User Datagram Protocol, Src Port: qcp (5082), Dst Port: qcp (5082)
Session Initiation Protocol
    Request-Line: NOTIFY sip:rls at 127.0.0.1:5082 SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 127.0.0.1:5082;branch=z9hG4bK0f26.4e8e9573.0
        To: <sip:jh at test.fi>;tag=374ba85b6c1b7e45caf839d18042c8ae-ec2b
        From: <sip:sip at test.fi>;tag=48de7c3cb9f0a00e953b10ae4e49e9de-3f5d
        CSeq: 1 NOTIFY
        Call-ID: 7bffc7ef-21244 at 127.0.0.1
        Content-Length: 0
        User-Agent: OpenSIPS (1.5.2-notls (i386/linux))
        Max-Forwards: 70
        Event: presence
        Contact: <sip:127.0.0.1:5082>
        Subscription-State: pending;expires=610

No.     Time            Source                Destination           Protocol Info
     12 15:53:46.956465 127.0.0.1             127.0.0.1             SIP      Status: 404 Not found

Frame 12 (378 bytes on wire, 378 bytes captured)
Linux cooked capture
Internet Protocol, Src: 127.0.0.1 (127.0.0.1), Dst: 127.0.0.1 (127.0.0.1)
User Datagram Protocol, Src Port: qcp (5082), Dst Port: qcp (5082)
Session Initiation Protocol
    Status-Line: SIP/2.0 404 Not found
    Message Header
        Via: SIP/2.0/UDP 127.0.0.1:5082;branch=z9hG4bK0f26.4e8e9573.0
        To: <sip:jh at test.fi>;tag=374ba85b6c1b7e45caf839d18042c8ae-ec2b
        From: <sip:sip at test.fi>;tag=48de7c3cb9f0a00e953b10ae4e49e9de-3f5d
        CSeq: 1 NOTIFY
        Call-ID: 7bffc7ef-21244 at 127.0.0.1
        Server: OpenSIPS (1.5.2-notls (i386/linux))
        Content-Length: 0