[OpenSER-Devel] New module and some restructuring

[Iñaki Baz Castillo]

El Tuesday 06 May 2008 18:02:01 Dan Pascu escribió:

> 1. A new module called nat_traversal which implements a fully featured NAT
> keepalive functionality for SIP signaling. This keepalive functionality
> offers the following features:

Hi, it sounds great.

What about SIP TCP signalling? does the new module implement any way to 
mantain the keepalive in a TCP connection using CRLF or anything?

AFAIK using CRLF for keeping a connection open is not a TCP standard and some 
imlpementations doesn't support it, but I remember reading about this method 
in the "outbound" draft (for SIP TCP and NAT issues).

Also, for now the only way is by setting a very small register interval. If at 
least we could set a different register interval for TCP and UDP clients... 
but it's not possible, so solving TCP NAT issues means incrementing SIP UDP 
traffic when it wouldn't be neccesary.

Thanks.


-- 
Iñaki Baz Castillo
ibc at in.ilimit.es