16 Nov
2009
16 Nov
'09
9:46 p.m.
is there a flag that i can set before calling t_relay that causes
t_relay not to try to create a new tcp connection to the destination if
one does not already exist? this would be handy when t_relaying to
registered tcp contacts.
-- juha
17 Nov
17 Nov
12:03 a.m.
On Nov 16, 2009 at 23:46, Juha Heinanen <jh(a)tutpro.com> wrote:
is there a flag that i can set before calling t_relay
that causes
t_relay not to try to create a new tcp connection to the destination if
one does not already exist? this would be handy when t_relaying to
registered tcp contacts.
From the script, use set_forward_no_connect() before
t_relay().
If you want to do this from a module, then use:
msg->fwd_send_flags |=SND_F_FORCE_CON_REUSE.
See also set_reply_no_connect(), set_forward_close() and
set_reply_close() (they are documented in NEWS and thanks to Klaus also
in http://sip-router.org/wiki/cookbooks/core-cookbook/devel).
Andrei
12:47 a.m.
On Tue, Nov 17, 2009 at 1:03 AM, Andrei Pelinescu-Onciul
<andrei(a)iptel.org> wrote:
On Nov 16, 2009 at 23:46, Juha Heinanen
<jh(a)tutpro.com> wrote:
Note that you cannot reliably tell if a connection to a UA behind NAT
can be established. For example, I have a Fritbox NAT at home which
can be configured to "expose" one of the hosts to the internet. This
means that all incoming traffic for which no other rule is found in
the NAT box is forwarded to the exposed host, which in my case is a
UA.
-- Jan
is there a flag that i can set before calling
t_relay that causes
t_relay not to try to create a new tcp connection to the destination if
one does not already exist? this would be handy when t_relaying to
registered tcp contacts.
From the script, use set_forward_no_connect() before t_relay().
If you want to do this from a module, then use:
msg->fwd_send_flags |=SND_F_FORCE_CON_REUSE.
See also set_reply_no_connect(), set_forward_close() and
set_reply_close() (they are documented in NEWS and thanks to Klaus also
in http://sip-router.org/wiki/cookbooks/core-cookbook/devel).
5:56 a.m.
Jan Janak writes:
Note that you cannot reliably tell if a connection to
a UA behind NAT
can be established.
jan,
i'm not trying to determine that. i just don't see any point in even
trying to establish tcp connection from proxy to an ua that has
registered over tcp. the ua and proxy should not close the connection
as long as registration is valid.
-- juha
11:57 a.m.
On Tue, Nov 17, 2009 at 6:56 AM, Juha Heinanen <jh(a)tutpro.com> wrote:
Jan Janak writes:
I see, that makes sense.
-- Jan
Note that you cannot reliably tell if a
connection to a UA behind NAT
can be established.
jan,
i'm not trying to determine that. i just don't see any point in even
trying to establish tcp connection from proxy to an ua that has
registered over tcp. the ua and proxy should not close the connection
as long as registration is valid.
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4 comments
3 participants
participants (3)
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Andrei Pelinescu-Onciul -
Jan Janak -
jh＠tutpro.com