[Serusers] Record-Route/Via headers not added when protocol=TCP

[Erich Nahum]

Howdy,

I'm playing with SER 0.9.3 with sipp as the workload generator on
a bunch of linux boxes.  When the transport is UDP, openser adds the
record-route and via headers like it is supposed to as a proxy.  But 
when I use TCP these headers are not added.  This is a UAC->proxy->UAS 
scenario.  

I'm attaching ethereal dumps of the UDP-based UAC, TCP-based UAC, UDP-based
UAS, and TCP-based UAS for reference.

Any suggestions appreciated.

Thanks,

-Erich
-- 
Erich M. Nahum                  IBM T.J. Watson Research Center
Research Staff Member           P.O. Box 704
nahum at watson.ibm.com            Yorktown Heights NY 10598
-------------- next part --------------
Frame 7 (537 bytes on wire, 537 bytes captured)
Ethernet II, Src: 00:11:25:29:11:5d, Dst: 00:0d:60:9d:30:3f
Internet Protocol, Src Addr: 10.0.1.40 (10.0.1.40), Dst Addr: 10.0.1.42 (10.0.1.42)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
    Request-Line: INVITE sip:service at 10.0.1.41:5060 SIP/2.0
        Method: INVITE
        Resent Packet: False
    Message Header
        Via: SIP/2.0/UDP bronxville1:5060;branch=z9hG4bK-1-0
        From: sipp <sip:sipp at bronxville1:5060>;tag=1
            SIP from address: sipp <sip:sipp at bronxville1:5060>
            SIP tag: 1
        To: sut <sip:service at 10.0.1.41:5060>
        Call-ID: 1-28105 at bronxville1
        CSeq: 1 INVITE
        Contact: sip:sipp at bronxville1:5060
        Max-Forwards: 70
        Subject: Performance Test
        Content-Type: application/sdp
        Content-Length:  132
    Message body

-------------- next part --------------
Session Initiation Protocol
    Request-Line: INVITE sip:service at 10.0.1.41:5060 SIP/2.0
        Method: INVITE
        Resent Packet: False
    Message Header
        Via: SIP/2.0/TCP bronxville1:5060;branch=z9hG4bK-1-0
        From: sipp <sip:sipp at bronxville1:5060>;tag=1
            SIP from address: sipp <sip:sipp at bronxville1:5060>
            SIP tag: 1
        To: sut <sip:service at 10.0.1.41:5060>
        Call-ID: 1-27019 at bronxville1
        CSeq: 1 INVITE
        Contact: sip:sipp at bronxville1:5060
        Max-Forwards: 70
        Subject: Performance Test
        Content-Type: application/sdp
        Content-Length:  132
    Message body

-------------- next part --------------
Frame 10 (676 bytes on wire, 676 bytes captured)
Ethernet II, Src: 00:0d:60:9d:30:3f, Dst: 00:0d:60:9d:73:db
Internet Protocol, Src Addr: 10.0.1.42 (10.0.1.42), Dst Addr: 10.0.1.41 (10.0.1.41)
User Datagram Protocol, Src Port: 5060 (5060), Dst Port: 5060 (5060)
Session Initiation Protocol
    Request-Line: INVITE sip:service at 10.0.1.41:5060 SIP/2.0
        Method: INVITE
        Resent Packet: False
    Message Header
        Record-Route: <sip:10.0.1.42;ftag=1;lr=on>
        Via: SIP/2.0/UDP 10.0.1.42;branch=z9hG4bKcf89.f46403c6.0
        Via: SIP/2.0/UDP bronxville1:5060;received=10.0.1.40;branch=z9hG4bK-1-0
        From: sipp <sip:sipp at bronxville1:5060>;tag=1
            SIP from address: sipp <sip:sipp at bronxville1:5060>
            SIP tag: 1
        To: sut <sip:service at 10.0.1.41:5060>
        Call-ID: 1-26914 at bronxville1
        CSeq: 1 INVITE
        Contact: sip:sipp at bronxville1:5060
        Max-Forwards: 16
        Subject: Performance Test
        Content-Type: application/sdp
        Content-Length:  132
        P-hint: outbound
    Message body
-------------- next part --------------
Frame 16 (561 bytes on wire, 561 bytes captured)
Ethernet II, Src: 00:11:25:29:11:5d, Dst: 00:0d:60:9d:73:db
Internet Protocol, Src Addr: 10.0.1.40 (10.0.1.40), Dst Addr: 10.0.1.41 (10.0.1.41)
Transmission Control Protocol, Src Port: 56280 (56280), Dst Port: 5060 (5060), Seq: 1, Ack: 1, Len: 495
Session Initiation Protocol
    Request-Line: INVITE sip:service at 10.0.1.41:5060 SIP/2.0
        Method: INVITE
        Resent Packet: False
    Message Header
        Via: SIP/2.0/TCP bronxville1:5060;branch=z9hG4bK-1-0
        From: sipp <sip:sipp at bronxville1:5060>;tag=1
            SIP from address: sipp <sip:sipp at bronxville1:5060>
            SIP tag: 1
        To: sut <sip:service at 10.0.1.41:5060>
        Call-ID: 1-26885 at bronxville1
        CSeq: 1 INVITE
        Contact: sip:sipp at bronxville1:5060
        Max-Forwards: 70
        Subject: Performance Test
        Content-Type: application/sdp
        Content-Length:  132
    Message body