8 Aug
2007
8 Aug
'07
2:43 p.m.
Hello all.
We are facing some problems in our deployment of OpenSER, related to NAT
Traversal solution using MediaProxy.
In our scenario, using the the sample configuration NAT detection works
right for REGISTER method, and for INVITE's sent from clients behind NAT,
but, incoming calls originated from transparent clients, directed to clients
behind NAT do not work, and do not pass through MediaProxy. Services based
on re-INVITES do not work either.
To solve that issue, we tried to intercept the 200 OK answer coming from NAT
client, so that we could call use_media_proxy(), but, we get the error:
"Empty Response from media_proxy()"
Our configuration is more or less like this:
# In the beginning of the main route
if(client_nat_test("7"))
{
setflag(2);
fix_contact();
};
.....
if(is_method("INVITE"))
{
if(isflagset(2))
{
use_media_proxy();
};
t_on_reply("1");
}
....
on_reply_route[1]
{
if (status =~ "(18[0-3])|(2[0-9][0-9])|(1[0-9][0-9])")
{
if (client_nat_test("3"))
{
fix_contact();
use_media_proxy();
}
}
}
That is a very brief configuration fragment, but it is more or less the
schema of configuration we are using. So far, our solution to be able to
have the whole services working is marking all the calls so that they pass
through the mediaproxy, but we are not sure if that is a good solution.
Thanks in advance for every hint or suggestion.
Kind regards
*Sergio Armando Gutiérrez Betancur*
*S**ubdirección **A**plicaciones **de **S**ervicios **C**onvergentes**
UNE - EPM Telecomunicaciones
* *Tel: 054 3802956*
*Email: saguti(a)gmail.com*
8 Aug
8 Aug
3:29 p.m.
Hi,
Maybe the request of this reply hasn't been passed to mediaproxy? If the
callee is registered from behind NAT, you know that already in the
request because the nat-flag should have been set during registration.
So after lookup("location") the nat-flag should be set, and if so, you
have to use_media_proxy() also for the request.
Andreas
Sergio Gutierrez wrote:
Hello all.
We are facing some problems in our deployment of OpenSER, related to NAT
Traversal solution using MediaProxy.
In our scenario, using the the sample configuration NAT detection works
right for REGISTER method, and for INVITE's sent from clients behind
NAT, but, incoming calls originated from transparent clients, directed
to clients behind NAT do not work, and do not pass through MediaProxy.
Services based on re-INVITES do not work either.
To solve that issue, we tried to intercept the 200 OK answer coming from
NAT client, so that we could call use_media_proxy(), but, we get the
error: "Empty Response from media_proxy()"
Our configuration is more or less like this:
# In the beginning of the main route
if(client_nat_test("7"))
{
setflag(2);
fix_contact();
};
.....
if(is_method("INVITE"))
{
if(isflagset(2))
{
use_media_proxy();
};
t_on_reply("1");
}
....
on_reply_route[1]
{
if (status =~ "(18[0-3])|(2[0-9][0-9])|(1[0-9][0-9])")
{
if (client_nat_test("3"))
{
fix_contact();
use_media_proxy();
}
}
}
That is a very brief configuration fragment, but it is more or less the
schema of configuration we are using. So far, our solution to be able to
have the whole services working is marking all the calls so that they
pass through the mediaproxy, but we are not sure if that is a good
solution.
Thanks in advance for every hint or suggestion.
Kind regards
/Sergio Armando Gutiérrez Betancur/
/S//ubdirección //A//plicaciones //de //S//ervicios //C//onvergentes//
UNE - EPM Telecomunicaciones
/ /Tel: 054 3802956/
/Email: saguti(a)gmail.com <mailto:saguti@gmail.com>/
------------------------------------------------------------------------
_______________________________________________
Users mailing list
Users(a)openser.org
http://openser.org/cgi-bin/mailman/listinfo/users
4:13 p.m.
Hi Andreas.
Thanks for your answer. I that case, as you say, how should I setup the
configuration?
After doing lookup("location"), how could I check nat-flag?
Thanks a lot.
*
Sergio Armando Gutiérrez Betancur*
*S**ubdirección **A**plicaciones **de **S**ervicios **C**onvergentes**
EPM TUNE *
*Tel: 054 3802956*
*Email: sergio.gutierrez(a)une.com.co*
*
*
On 8/8/07, Andreas Granig <agranig(a)sipwise.com> wrote:
Hi,
Maybe the request of this reply hasn't been passed to mediaproxy? If the
callee is registered from behind NAT, you know that already in the
request because the nat-flag should have been set during registration.
So after lookup("location") the nat-flag should be set, and if so, you
have to use_media_proxy() also for the request.
Andreas
Sergio Gutierrez wrote:
Hello all.
We are facing some problems in our deployment of OpenSER, related to NAT
Traversal solution using MediaProxy.
In our scenario, using the the sample configuration NAT detection works
right for REGISTER method, and for INVITE's sent from clients behind
NAT, but, incoming calls originated from transparent clients, directed
to clients behind NAT do not work, and do not pass through MediaProxy.
Services based on re-INVITES do not work either.
To solve that issue, we tried to intercept the 200 OK answer coming from
NAT client, so that we could call use_media_proxy(), but, we get the
error: "Empty Response from media_proxy()"
Our configuration is more or less like this:
# In the beginning of the main route
if(client_nat_test("7"))
{
setflag(2);
fix_contact();
};
.....
if(is_method("INVITE"))
{
if(isflagset(2))
{
use_media_proxy();
};
t_on_reply("1");
}
....
on_reply_route[1]
{
if (status =~ "(18[0-3])|(2[0-9][0-9])|(1[0-9][0-9])")
{
if (client_nat_test("3"))
{
fix_contact();
use_media_proxy();
}
}
}
That is a very brief configuration fragment, but it is more or less the
schema of configuration we are using. So far, our solution to be able to
have the whole services working is marking all the calls so that they
pass through the mediaproxy, but we are not sure if that is a good
solution.
Thanks in advance for every hint or suggestion.
Kind regards
/Sergio Armando Gutiérrez Betancur/
/S//ubdirección //A//plicaciones //de //S//ervicios //C//onvergentes//
UNE - EPM Telecomunicaciones
/ /Tel: 054 3802956/
/Email: saguti(a)gmail.com <mailto:saguti@gmail.com>/
------------------------------------------------------------------------
_______________________________________________
Users mailing list
Users(a)openser.org
http://openser.org/cgi-bin/mailman/listinfo/users
4:27 p.m.
modparam("usrloc", "nat_bflag", 6) # or any other free flag
...
if(lookup("location")) {
if(isbflagset(6)) {
# use mediaproxy if not already done
# (make sure to not call it twice)
}
...
}
Sergio Gutierrez wrote:
Hi Andreas.
Thanks for your answer. I that case, as you say, how should I setup the
configuration?
After doing lookup("location"), how could I check nat-flag?
Thanks a lot.
/
Sergio Armando Gutiérrez Betancur/
/S//ubdirección //A//plicaciones //de //S//ervicios //C//onvergentes//
EPM TUNE /
/Tel: 054 3802956/
/Email: sergio.gutierrez(a)une.com.co <mailto:sergio.gutierrez@une.com.co>/
/
/
On 8/8/07, *Andreas Granig* <agranig(a)sipwise.com
<mailto:agranig@sipwise.com>> wrote:
Hi,
Maybe the request of this reply hasn't been passed to mediaproxy? If the
callee is registered from behind NAT, you know that already in the
request because the nat-flag should have been set during registration.
So after lookup("location") the nat-flag should be set, and if so, you
have to use_media_proxy() also for the request.
Andreas
Sergio Gutierrez wrote:
------------------------------------------------------------------------
Hello all.
We are facing some problems in our deployment of OpenSER, related
to NAT
Traversal solution using MediaProxy.
In our scenario, using the the sample configuration NAT detection
works
right for REGISTER method, and for INVITE's
sent from clients behind
NAT, but, incoming calls originated from transparent clients,
directed
to clients behind NAT do not work, and do not
pass through
MediaProxy.
Services based on re-INVITES do not work either.
To solve that issue, we tried to intercept the 200 OK answer
coming from
NAT client, so that we could call
use_media_proxy(), but, we get the
error: "Empty Response from media_proxy()"
Our configuration is more or less like this:
# In the beginning of the main route
if(client_nat_test("7"))
{
setflag(2);
fix_contact();
};
.....
if(is_method("INVITE"))
{
if(isflagset(2))
{
use_media_proxy();
};
t_on_reply("1");
}
....
on_reply_route[1]
{
if (status =~ "(18[0-3])|(2[0-9][0-9])|(1[0-9][0-9])")
{
if (client_nat_test("3"))
{
fix_contact();
use_media_proxy();
}
}
}
That is a very brief configuration fragment, but it is more or
less the
schema of configuration we are using. So far, our
solution to be
able to
have the whole services working is marking all
the calls so that
they
pass through the mediaproxy, but we are not sure
if that is a good
solution.
Thanks in advance for every hint or suggestion.
Kind regards
/Sergio Armando Gutiérrez Betancur/
/S//ubdirección //A//plicaciones //de //S//ervicios
//C//onvergentes//
UNE - EPM Telecomunicaciones
/ /Tel: 054 3802956/
/Email: saguti(a)gmail.com <mailto:saguti@gmail.com> <mailto:
saguti(a)gmail.com <mailto:saguti@gmail.com>>/
_______________________________________________
Users mailing list
Users(a)openser.org <mailto:Users@openser.org>
http://openser.org/cgi-bin/mailman/listinfo/users
5:36 p.m.
Hi Sergio,
I share the same opinion with Andreas that your openser configuration
is not properly done and you are not handling properly in normal route
the requests for mediaproxy.
Please keep in mind if you are using some sample configurations for
mediaproxy written for earlier versions - since 1.2 the policy for nat
detection for registers (so destinations behind nat) has been changed
and now u must use bflag instead of normal ones.
Here is some sample config to give you some ideas about what u could do:
route {
if (!search("^Contact:[ ]*\*") && nat_uac_test("23")) {
append_hf("P-hint: Cannot find contact and client is behind nat\r\n");
setbflag(6);
fix_nated_register();
force_rport();
};
t_on_reply("1");
if (isbflagset(6) || isbflagset(7)) {
if(!isbflagset(8)) {
# Set flag 8 for using mediaproxy in onreply
for the same sessions
setbflag(8);
use_media_proxy();
};
}
onreply_route[1] {
if (status=~"(180)|(183)|2[0-9][0-9]") {
if (isbflagset(8) && !search("^Content-Length:[ ]*0")) {
append_hf("P-hint: ONREPLY: Content in, use media proxy\r\n");
use_media_proxy();
};
if(client_nat_test("1")) {
fix_contact();
if (status=~"(183)|(200)") {
fix_nated_sdp("1");
};
};
};
append_hf("P-hint: ONREPLY END. \r\n");
}
Hope this helps.
DanB
On 8/8/07, Andreas Granig <agranig(a)sipwise.com> wrote:
modparam("usrloc", "nat_bflag", 6)
# or any other free flag
...
if(lookup("location")) {
if(isbflagset(6)) {
# use mediaproxy if not already done
# (make sure to not call it twice)
}
...
}
Sergio Gutierrez wrote:
Hi Andreas.
Thanks for your answer. I that case, as you say, how should I setup the
configuration?
After doing lookup("location"), how could I check nat-flag?
Thanks a lot.
/
Sergio Armando Gutiérrez Betancur/
/S//ubdirección //A//plicaciones //de //S//ervicios //C//onvergentes//
EPM TUNE /
/Tel: 054 3802956/
/Email: sergio.gutierrez(a)une.com.co <mailto:sergio.gutierrez@une.com.co>/
/
/
On 8/8/07, *Andreas Granig* <agranig(a)sipwise.com
<mailto:agranig@sipwise.com>> wrote:
Hi,
Maybe the request of this reply hasn't been passed to mediaproxy? If the
callee is registered from behind NAT, you know that already in the
request because the nat-flag should have been set during registration.
So after lookup("location") the nat-flag should be set, and if so, you
have to use_media_proxy() also for the request.
Andreas
Sergio Gutierrez wrote:
------------------------------------------------------------------------
_______________________________________________
Users mailing list
Users(a)openser.org
http://openser.org/cgi-bin/mailman/listinfo/users
Hello all.
We are facing some problems in our deployment of OpenSER, related
to NAT
Traversal solution using MediaProxy.
In our scenario, using the the sample configuration NAT detection
works
right for REGISTER method, and for INVITE's
sent from clients behind
NAT, but, incoming calls originated from transparent clients,
directed
to clients behind NAT do not work, and do not
pass through
MediaProxy.
Services based on re-INVITES do not work either.
To solve that issue, we tried to intercept the 200 OK answer
coming from
NAT client, so that we could call
use_media_proxy(), but, we get the
error: "Empty Response from media_proxy()"
Our configuration is more or less like this:
# In the beginning of the main route
if(client_nat_test("7"))
{
setflag(2);
fix_contact();
};
.....
if(is_method("INVITE"))
{
if(isflagset(2))
{
use_media_proxy();
};
t_on_reply("1");
}
....
on_reply_route[1]
{
if (status =~ "(18[0-3])|(2[0-9][0-9])|(1[0-9][0-9])")
{
if (client_nat_test("3"))
{
fix_contact();
use_media_proxy();
}
}
}
That is a very brief configuration fragment, but it is more or
less the
schema of configuration we are using. So far, our
solution to be
able to
have the whole services working is marking all
the calls so that
they
pass through the mediaproxy, but we are not sure
if that is a good
solution.
Thanks in advance for every hint or suggestion.
Kind regards
/Sergio Armando Gutiérrez Betancur/
/S//ubdirección //A//plicaciones //de //S//ervicios
//C//onvergentes//
UNE - EPM Telecomunicaciones
/ /Tel: 054 3802956/
/Email: saguti(a)gmail.com <mailto:saguti@gmail.com> <mailto:
saguti(a)gmail.com <mailto:saguti@gmail.com>>/
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Users(a)openser.org <mailto:Users@openser.org>
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6187
days inactive
6187
days old
4 comments
3 participants
participants (3)
-
Andreas Granig -
Dan-Cristian Bogos -
Sergio Gutierrez