You could also send the 100 trying response at the beginning of the script. the the processing delay is almost 0 :-)

klaus

Am 16.03.2010 18:54, schrieb Iñaki Baz Castillo:
2010/3/16 Alex Balashov<abalas...@evaristesys.com>:
It seems to me that the a proxy processing an initial request directed to it
should be able to insert such a header in a reply, but that Kamailio does
not have support for timing functions that perform these measurements
automatically.  Would you agree?

Well, a workaround could be take the current time at the top of the
script, then just before the t_relay (the real time it takes to the
proxy to process the request) calculate the delta time and generate a
stateless 100 reply adding suche header. Then call to t_relay with the
proper flag to avoid sending a new 100 response.



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