1 Apr
2019
1 Apr
'19
11:18 a.m.
On Monday 01 April 2019 at 16:33:17, Igor Olhovskiy wrote:
Hi!
Was looking on some way to compress SIP signalling between internal
servers.
What problem are you trying to solve by compressing SIP?
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.
Surely you're still only talking about 100s to 1000s of bytes - how is that a
problem for you?
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.
So, are you trying to restrict the total amount of data being sent in a SIP
request / response, or are you trying to control the MTU size of the packets /
frames that data is sent in?
Antony.
--
"Measuring average network latency is about as useful as measuring the mean
temperature of patients in a hospital."
- Stéphane Bortzmeyer
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