[OpenSER-Devel] responding to double-CRLF ping with single CRLF pong

[Juha Heinanen]

outbound draft http://tools.ietf.org/html/draft-ietf-sip-outbound-12
specifies that tcp connected UAs should keep tcp connection always open
to a working outbound proxy and verify if connection is still working by
periodically sending double-CRLF "pings" on the connection.  to a
double-CRLF "ping", proxy is supposed to respond with single-CRLF
"pong".  if openser does not yet support "pong" response, it might be
a good idea to add it to 1.4 wish list.

- juha