[SR-Users] Compressing SIP messages

[Igor Olhovskiy]

Hi!

Was looking on some way to compress SIP signalling between internal servers. But found out, there are no some pre-defined or recommended mechanism of doing this.
Yes, I found gzcompress module, but it will help only in case of big body, but not whole message itself. Like in some cases you can have 4-5 RR headers, which is already a lot of info.

What I googled is
SigComp

Compact Header form

As I found, SigComp is really not widely-used method and it support along opensource SIP servers/PBXes is not documented.
For Compact Header form - is there any way of using Kamailio to compress message this way?
Maybe also there is a way of having some intermediate proxy-layer software, that will gzip/gunzip SIP signalling in realtime?

All of this actually cause info in SIP/SDP grows rapidly, unfortunately MTU size is not.
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