[SIPForum-discussion] how to add Via header field in the excisting INVITE request

[gokul a]

how to add Via header field in the excisting INVITE request ????

                   SIP - 1
                       |
                       |
                   SIP - 2 Server

1. SIP 1 sends the INVITE with some via header
2. I need to update the SIP 2 server address in the via field.
How 2 achieve this?????
I m using the JainSip (Java/J2ee)
as my SIP protocol stack...
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