Hello all,
Wouldn't it make more sense to have an option send an OPTIONS request to the NATed client? This would be a "real sip ping" rather than just an empty UDP packet? Is this possible in either mediaproxy or rtpproxy?
What do you think?
Best regards, Martin
-----Original Message----- From: serusers-bounces@lists.iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of Kanakatti Mahesh Subramanya Sent: Tuesday, November 30, 2004 7:01 AM To: serusers@lists.iptel.org Subject: [Serusers] Adding headers to the "200 OK" response
Is it possible to manipulate the "200 OK" response to a REGISTER method? I need to add a header field to it, and as far as I can tell, there really is no way to do this.
Why do I want to do this? Well, Snom foneslook for the presence of a "P-NAT-Refresh: <yyyseconds>" header in the "200 OK" response to their REGISTER methods. If the header is present, the fones start sending out "keep-alive" packets every yyy seconds, thus keeping NAT bindings open
Why dont I just use "natping_interval" in mediaproxy? Because there are a whole bunch of routers (linksys firewall/routers, dlink ones, etc.) which only keep the binding open when there is a packet sourced from the internal network.
Cheers