[OpenSIPS-Users] REGISTER reply > MTU size?

Pauba, Kevin L KLPauba at west.com
Thu Feb 7 19:57:38 CET 2013


Thanks for the reply, Ovidiu.

Unfortunately, I can't modify the client to use TCP.

Because of UDP fragmentation, it seems there should be a way to limit the size of the Contact header in the reply.  Would you agree?
Is it uncommon for the list of bindings for an AOR to be this large?

L8r

-----Original Message-----
From: users-bounces at lists.opensips.org [mailto:users-bounces at lists.opensips.org] On Behalf Of Ovidiu Sas
Sent: Thursday, February 07, 2013 12:49 PM
To: OpenSIPS users mailling list
Subject: Re: [OpenSIPS-Users] REGISTER reply > MTU size?

If you are registering over UDP and if the reply is exceeding the maximum UDP packet length, the reply will be indeed fragmented..
http://en.wikipedia.org/wiki/User_Datagram_Protocol#Packet_structure
(see length).
One option would be to register over TCP to avoid fragmentation.

Regards,
Ovidiu Sas





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