7 Jan
2020
7 Jan
'20
11:29 p.m.
Alex Balashov <abalashov(a)evaristesys.com> writes:
I wanted to get clarity on a rather basic question:
When using Kamailio with TCP, is it possible to end up with fragments of
multiple SIP messages in a single "on-the-wire" packet?
From what I understand, the purpose of Kamailio's setting TCP_NODELAY is
to prevent such bundling--as much as it is possible to control the
fragmentation/packetisation behaviour of the transport protocol from a
user-space application.
From a standards point of view, there is no real
meaning to the end
applications to what bytes of user payload are in which TCP
segments
within packets. TCP_NODELAY is a hint that coalescing small writes is
not needed, to avoid a time delay waiting until that next chunk of data
might arrive. However, that's not a guarantee.
My question to you might be why you care, or if you are having a
problem.