[Users] Can not register to OPENSER

[Bill Zhang]

Bogdan,

Thanks for the reminder, this is a question that I don't know the answer, as
I'm struggling to understand the whole configuration.  I will try to find
out why it is called:).

BTW, I always want to see if I can make SER a powerful server with following
configuration:

1.  Check if SIP end point(base on the SIP message, like Register, Invite)
is behind the NAT, if it is with private IP, then use SER NAThelper for SIP
Message and RTP Proxy for RTP.
2.  If it is with public IP, check if its IP and Source port is as claimed
in the SIP Message(Invite, Register, etc), if yes, then proceed to treat
this SIP end point with public IP.
3.  If 2 is not true, then this end point may use STUN with wrong detection
result, then we treat it as in 1.

I wonder if there is any sample configurations for reference?

Best Regards,
Bill Zhang
Tel: 626-956-0260 ext 601
Cell: 626-354-0967
web: www.grandstream.com
email: wzhang at grandstream.com




-----Original Message-----
From: Bogdan-Andrei Iancu [mailto:bogdan at voice-system.ro] 
Sent: Friday, August 04, 2006 8:16 AM
To: Bill Zhang
Cc: 'Marc Haisenko'; users at openser.org
Subject: Re: [Users] Can not register to OPENSER

Hi Bill,

you should you call force_rtp_proxy() for a REGISTER?

regards,
bogdan

Bill Zhang wrote:

>The issue is, this is a SIP Registration message, it certainly does NOT
>contain SDP, in fact there are other SIP messages that does NOT contain SDP
>message but still need nathelper to recognize it behind a NAT so that
>OPENSER can send response back to the client correctly.
>
>In summary, nathelper should be able to base on the SIP message to handle
it
>correctly.
>
>Best Regards,
>Bill Zhang
>-----Original Message-----
>From: Marc Haisenko [mailto:haisenko at comdasys.com] 
>Sent: Thursday, August 03, 2006 12:09 AM
>To: users at openser.org
>Cc: Bill Zhang
>Subject: Re: [Users] Can not register to OPENSER
>
>On Thursday 03 August 2006 00:46, Bill Zhang wrote:
>  
>
>>Anyone knows why I keep getting following error message?
>>
>> 
>>
>>Aug  2 13:10:26 localhost openser[30695]: ERROR: extract_body: message
>>    
>>
>body
>  
>
>>has length zero
>>
>>Aug  2 13:10:26 localhost openser[30695]: ERROR: force_rtp_proxy2: can't
>>extract body from the message
>>    
>>
>
>The message says it, and your SIP message proves it: the SIP message has no

>body.
>
>nathelper operates on the SDP body, it mangles them (together with
rtpproxy)
>
>so that the SDP body sent to the receiver contains the address of your 
>machine running OpenSER instead of the real phone. This is so that the 
>machine can act as RTP proxy on network edges.
>
>Since your SIP message has no SDP body there is nothing nathelper can do
:-)
>C'ya,
>	Marc
>
>
>  
>