Actually you can force the TCP socket (e.g. sending from the same socket you are listening on) if the kernel has support for SO_REUSEPORT (linux > 3.9, FreeBSD, OSX) and you enable tcp_reuse_port in kamailio configuration ( https://www.kamailio.org/wiki/cookbooks/5.2.x/core#tcp_reuse_port).
Best, Federico On Thu, Jul 4, 2019 at 10:27 AM Daniel Tryba <[email protected]> wrote: > On Wed, Jul 03, 2019 at 06:38:28PM +0200, Karsten Horsmann wrote: > > any one here that can imagine why force sendsocket generates an udp > packet > > if the target accept only tcp? And without fs it generates an tcp packet. > > For uac registrations outbound? > > Reading the cookbook documentation of force_send_socket raises > questions: > Force to send the message from the specified socket (it _must_ be one > of the sockets specified with the listen directive). If the > protocol doesn't match (e.g. UDP message forced to a TCP > socket) the closest socket of the same protocol is used. > > It relates to the listen directive, but if you are listening on a TCP > port/socket you can't use that port/socket to create new outbound > connections (to the best of my knowledge). > > You already tried $fs but without proto and port: > > https://www.kamailio.org/wiki/cookbooks/5.2.x/pseudovariables#fs_-_forced_socket > proto is taken from $du if missing and I guess port is 5060 if missing. > So if you are listening on 5060 tcp that can't be used for the outbound > message, 5060 from udp is the closed match perhaps. > > > _______________________________________________ > Kamailio (SER) - Users Mailing List > [email protected] > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >
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