Hi, Hope it helps...
The Session Initiation Protocol (SIP) operates over UDP and TCP, among others. When used with UDP, responses to requests are returned to the source address the request came from, and to the port written into the topmost Via header field value of the request. This behavior is not desirable in many cases, most notably, when the client is behind a Network Address Translator (NAT). This extension defines a new parameter for the Via header field, called "rport", that allows a client to request that the server send the response back to the source IP address and port from which the request originated. ..... This parameter MUST have no value; it serves as a flag to indicate to the server that this extension is supported and requested for the transaction. ..... Regards, Udit Goyal Mars Telecom (3Com) India Pvt Ltd, Hyderabad, India "angna" <[EMAIL PROTECTED]> Sent by: [EMAIL PROTECTED] 12/10/2004 03:34 PM To <[EMAIL PROTECTED]> cc Subject [Sip-implementors] rport field in VIA Hi All, Kindly provide me the information about rport field in VIA header and its usage. TIA, angna _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
