[sr-dev] problem with locally generated ACKs

[Juha Heinanen]

andrei,

i made the exactly same test with kamailio 1.5 and it does send the ack
to 200 ok to the same ip/port as invite.  i don't know how that is
possible when you say you have read the code and there is no difference,
but that is what is happening.

wireshark output is below.

but as i told in my previous reply, the new tm module param would be
fine with me.  i don't care how it is made to work as long as it works.

-- juha

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

No.     Time            Source                Destination           Protocol Info
      1 12:37:47.970568 192.98.101.34         192.98.100.132        SIP/SDP  Request: INVITE sip:jh at 192.168.0.169:5074, with session description

Frame 1 (594 bytes on wire, 594 bytes captured)
Ethernet II, Src: Micro-St_12:9c:1f (00:0c:76:12:9c:1f), Dst: D-Link_a1:05:85 (00:1b:11:a1:05:85)
Internet Protocol, Src: 192.98.101.34 (192.98.101.34), Dst: 192.98.100.132 (192.98.100.132)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 65023 (65023)
Session Initiation Protocol
    Request-Line: INVITE sip:jh at 192.168.0.169:5074 SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 192.98.101.34;branch=z9hG4bKe9f7.475deca2.0
        To: <sip:jh at openxg.com>
        From: <sip:click2dial at openxg.com>;tag=4b2cacfbec47f
        CSeq: 1 INVITE
        Call-ID: 4b2cacfbec47f at openxg.com
        Content-Length: 131
        User-Agent: Kamailio (1.5.3-tls (i386/linux))
        Contact: <sip:click2dial at 192.98.101.34:5060>
        Reject-Contact: *;automata="YES"
        Content-Type: application/sdp
    Message Body

No.     Time            Source                Destination           Protocol Info
      5 12:37:56.154785 192.98.100.132        192.98.101.34         SIP/SDP  Status: 200 OK, with session description

Frame 5 (694 bytes on wire, 694 bytes captured)
Ethernet II, Src: D-Link_a1:05:85 (00:1b:11:a1:05:85), Dst: Micro-St_12:9c:1f (00:0c:76:12:9c:1f)
Internet Protocol, Src: 192.98.100.132 (192.98.100.132), Dst: 192.98.101.34 (192.98.101.34)
User Datagram Protocol, Src Port: 65023 (65023), Dst Port: sip (5060)
Session Initiation Protocol
    Status-Line: SIP/2.0 200 OK
    Message Header
        Via: SIP/2.0/UDP 192.98.101.34;branch=z9hG4bKe9f7.475deca2.0
        To: <sip:jh at openxg.com>;tag=tnemc
        From: <sip:click2dial at openxg.com>;tag=4b2cacfbec47f
        Call-ID: 4b2cacfbec47f at openxg.com
        CSeq: 1 INVITE
        Contact: <sip:jh at 192.168.0.169:5074>
        Content-Type: application/sdp
        Allow: INVITE,ACK,BYE,CANCEL,OPTIONS,PRACK,REFER,NOTIFY,SUBSCRIBE,INFO,MESSAGE
        Server: Twinkle/1.3.2
        Supported: replaces,norefersub
        Content-Length: 208
    Message Body

No.     Time            Source                Destination           Protocol Info
      6 12:37:56.154959 192.98.101.34         192.98.100.132        SIP      Request: ACK sip:jh at 192.168.0.169:5074

Frame 6 (354 bytes on wire, 354 bytes captured)
Ethernet II, Src: Micro-St_12:9c:1f (00:0c:76:12:9c:1f), Dst: D-Link_a1:05:85 (00:1b:11:a1:05:85)
Internet Protocol, Src: 192.98.101.34 (192.98.101.34), Dst: 192.98.100.132 (192.98.100.132)
User Datagram Protocol, Src Port: sip (5060), Dst Port: 65023 (65023)
Session Initiation Protocol
    Request-Line: ACK sip:jh at 192.168.0.169:5074 SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 192.98.101.34;branch=z9hG4bKe9f7.475deca2.0
        From: <sip:click2dial at openxg.com>;tag=4b2cacfbec47f
        Call-ID: 4b2cacfbec47f at openxg.com
        To: <sip:jh at openxg.com>;tag=tnemc
        CSeq: 1 ACK
        User-Agent: Kamailio (1.5.3-tls (i386/linux))
        Content-Length: 0