[OpenSIPS-Users] ACK Loop when changing contact on_reply: Please Help!!!

[Nick Khamis]

Hello Everyone,

We are changing the "Contact" header in the on_reply to a public ip
address using:

onreply_route[1] {
        xlog("incoming reply\n");
                        if (has_body("application/sdp")) {
                                remove_hf("Contact");
                                append_hf("Contact:
<sip:1001 at 75.15.201.2>\r\n");
                                append_hf("P-hint: Onreply-route -
fixcontact \r\n");

                        }
}

When doing so, ACK is going into a loop:

U 2013/03/18 13:42:11.021017 75.15.201.2:5060 -> 192.168.2.5:5060
ACK sip:75.15.201.2;lr;did=b03.4af9f8f3 SIP/2.0.
Call-ID: VQUK2UGSQBCPHEW27UN5NBJIQM at 81.201.86.45.
CSeq: 102 ACK.
From: "15178334003" <sip:15178334003 at voip.ms>;tag=91641.
To: <sip:1001 at toronto.symack.com>;tag=2643FD58-346926A7.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 75.15.201.2;branch=z9hG4bKcd1e.d68abdc.2.
Via: SIP/2.0/UDP 7


Your help is greatly appreciated,

Nick.