[sr-dev] Outbound: Flow Timer, tcp_connection_timeout, and WebSocket pings

Juha Heinanen jh at tutpro.com
Fri Dec 28 09:21:27 CET 2012


Peter Dunkley writes:

> When using outbound it is mandatory to have some form of SIP keep-alive
> between the UA and the edge proxy.  However, in the case where SIP over
> WebSocket is used the WebSocket transport has its own ping/pong keepalive
> mechanism.

the whole section 6 of the websocket draft is a mess.  since websocket
runs over tcp, it should use normal tcp keepalive like any other
outbound tcp ua.

> So to my mind, SIP keep-alives are optional when WebSocket is in use?

section 6 is non-normative. if websocket guys want to change what
outbound rfc tells, they have to write an rfc about it.

-- juha



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