[Freeswitch-users] Bad port when using rport

[Spencer Thomason]

Hello all,
Our FS server is on a public IP on a dedicated server at one location and all clients are behind nat or vpn from other locations.  We have a few "road warrior" clients when our employees travel.  I'm seeing the following from one of the client devices.  I'm not sure of any of the details of the router (or have anyway to control it) but for some reason the rport is sent with an invalid port number.  Notice the 8 at the end of the port number is duplicated.  I'm seeing the same behavior from both a Bria client and Zoiper.  Is there any way to work around this?


An excerpt from Wireshark:

    466 2011-08-17 11:36:04.432912 80.34.4.95            206.125.40.171        SIP      Request: REGISTER sip:x.x.x.x

Internet Protocol, Src: 80.34.4.95 (80.34.4.95), Dst: 206.125.40.171 (x.x.x.x)
User Datagram Protocol, Src Port: 56238 (56238), Dst Port: sip (5060)
Session Initiation Protocol
    Request-Line: REGISTER sip:x.x.x.x SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 80.34.4.95:562388;rport;branch=z9hG4bKPjSAbzV32ywqJ8xWjWLx81Ml6oQcNlrM.s
        Max-Forwards: 70
        From: "XXXX" <sip:1001 at x.x.x.x>;tag=rPFQBJFIKAQpE88mHeiZ7ic59suQY70w
        To: "XXXX" <sip:1001 at x.x.x.x>
        Call-ID: awr-KAMoJpMYEt2mqkOkknkRrCXUj.Jv
        CSeq: 27137 REGISTER
        User-Agent: Bria iPhone 1.2.12
        Contact: "XXXX" <sip:1001 at 80.34.4.95:562388>
        Expires: 900
        Allow: PRACK, INVITE, ACK, BYE, CANCEL, UPDATE, SUBSCRIBE, NOTIFY, REFER, MESSAGE, OPTIONS
        Content-Length:  0