Hi Joan!
I suggest to create an openser config with the wizard on sipwise.com.
Then analyze this config and you will learn how to apply nat traversal
and use rtpproxy.
regards
klaus
Joan schrieb:
> 2008/11/21 Maxim Sobolev <[EMAIL PROTECTED]>:
>> Joan,
>>
>> The problem seems to be in unbalanced force_rtp_proxy() - which means
>> that you don't invoke force_rtp_proxy() on INVITE, but call it on
>> response. This is not allowed, since you would have one way audio in
>> such case.
>>
>> In your script you call force_rtp_proxy() on INVITEs only in the case if
>> isbflagset(2) is set, while call it on responses if nat_uac_test("19")
>> returns true on 200 OK. Is it possible that INVITE won't have bflag 9
>> set, while 200 OK response would trigger nat_uac_test("19"). You should
>> either fix your NAT detection logic, or use separate onreply blocks for
>> the cases when you have called force_rtp_proxy() on INVITE and for the
>> case when you have not.
> Hello, until this morning I haven't been able to modify any
> configuration, what I did basically, is to use nat_uac_test("19") in
> both places.
>
> if (is_method("INVITE")) {
> + if(nat_uac_test("19")) {
> - if(isbflagset(2)) {########## # behind a NAT
> log("MIS: Forcing proxy within router 1")
> force_rtp_proxy();
> };
>
> Watching the logs it seems that nat i detected properly during the
> INVITE and the force_rtp_proxy is called for the outgoing call, but
> rtpproxy gives back an answer that kamailio doesn't recognize.
> I could't find any reference to this value neither.
>
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]: MIS: Forcing proxy
> within router 1
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]:
> DBG:core:parse_headers: flags=ffffffffffffffff
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]:
> DBG:core:get_hdr_field: content_length=399
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]:
> DBG:core:get_hdr_field: found end of header
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]:
> DBG:nathelper:check_content_type: type <application/sdp> found valid
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]:
> DBG:core:parse_headers: flags=40
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]:
> DBG:nathelper:force_rtp_proxy2_f: proxy reply: E10
> Nov 24 09:33:33 pulse /usr/sbin/kamailio[27387]:
> ERROR:nathelper:force_rtp_proxy2_f: incorrect port 0 in reply from rtp
> proxy
>
>
> Regards
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