Hi Petr,

The message is denied because there are no credentials (authentication 
information) in it. And probably you have configured OpenSIPS to perform 
Digest Auth for registers - so , opensips is simply asking for auth via 
that 401.

Normally, the UAC, in response to a 401 reply, should resend the 
REGISTER with the credentials attached.

Regards,
Bogdan

Petr Man wrote:
> Helo again,
>
> I have started dumping around on the server and I think it is actually
> a bug in the snom. As you can see in the following log, the REGISTER
> contains my old IP address. Shouldn't it get a new one from the STUN
> server? Why is this request refused by my OpenSIPS and not by any
> other server I am using (i.e. sip2sip.info whis is running OpenSIPS
> 1.4.5 (I think))? Oh an one more thing. The server responds with 401,
> but this message doesn't even appear in the m3's log.
>
> Petr
>
> Here is a bit from tcpdump:
>
> 20:44:33.708443 IP (tos 0x0, ttl 49, id 24546, offset 0, flags [none],
> proto UDP (17), length 537) 91.51.119.228.61001 > 81.169.132.241.5060:
> SIP, length: 509
>         REGISTER sip:madnetwork.org SIP/2.0
>         Via: SIP/2.0/UDP 91.51.107.118:61000;branch=z9hG4bKgygurbkseafq96sn1f
>         Max-Forwards: 70
>         From: <sip:[email protected]>;tag=mc9k914b
>         To: <sip:[email protected]>
>         Call-ID: 8i4xflcj9orx8wph.p0hmnv9buua42
>         CSeq: 38204 REGISTER
>         Contact: <sip:[email protected]:61000;line=13252>
>         Allow: INVITE, CANCEL, BYE, ACK, REGISTER, OPTIONS, REFER,
> SUBSCRIBE, NOTIFY, MESSAGE, INFO, PRACK
>         Expires: 600
>         User-Agent: snom-m3-SIP/02.02 (MAC=0004132A9180; HW=1)
>         Content-Length: 0
>
>
> 20:44:33.708967 IP (tos 0x10, ttl 64, id 0, offset 0, flags [DF],
> proto UDP (17), length 501) 81.169.132.241.5060 > 91.51.119.228.61000:
> SIP, length: 473
>         SIP/2.0 401 Unauthorized
>         Via: SIP/2.0/UDP
> 91.51.107.118:61000;branch=z9hG4bKgygurbkseafq96sn1f;received=91.51.119.228
>         From: <sip:[email protected]>;tag=mc9k914b
>         To: 
> <sip:[email protected]>;tag=92fbbc76078921fe49ac1acde8d8d9b2.2ec1
>         Call-ID: 8i4xflcj9orx8wph.p0hmnv9buua42
>         CSeq: 38204 REGISTER
>         WWW-Authenticate: Digest realm="madnetwork.org",
> nonce="4a9d6cbd00001cf0456070be74dc7ef3e3a8a6d74b282478"
>         Server: OpenSIPS (1.4.1-tls (i386/linux))
>         Content-Length: 0
>
>
>
>
>
>
>
> On Tue, Sep 1, 2009 at 15:47, Bogdan-Andrei Iancu<[email protected]> 
> wrote:
>   
>> Hi Petr,
>>
>> But if opensips does not even get the REGISTER, it is hard to blame it
>> :)...As you said, check with wireshark to be sure that  the send
>> REGISTER actually gets to the server where opensips is running.
>>
>> Regards,
>> Bogdan
>>
>> Petr Man wrote:
>>     
>>> Hi,
>>> the m3 keeps sending REGISTER and doesn't get any response back. It
>>> kind of looks like as if the request never reached the server. They
>>> appear in the phone's log, but I didn't check yet if they are really
>>> sent by the phone. I will try it with wireshark.
>>> Petr
>>>
>>> On Mon, Aug 31, 2009 at 09:33, Bogdan-Andrei
>>> Iancu<[email protected]> wrote:
>>>
>>>       
>>>> Hi Petr,
>>>>
>>>> When you say your registration fails after the IP change, what exactly
>>>> means? you snom phone does not simply send any more registers (after the
>>>> previous one expired) or, you get a negative reply from opensips at a
>>>> new registration attempt?
>>>>
>>>> Regards,
>>>> Bogdan
>>>>
>>>> Petr Man wrote:
>>>>
>>>>         
>>>>> Hello list,
>>>>> I have asked on the Snom forum about my problem with m3 phone in
>>>>> conjunction with the OpenSIPS server a few weeks ago without any
>>>>> helpful hints, where the problem might be. The original message is
>>>>> here http://forum.snom.com/index.php?showtopic=1944.
>>>>> My internet connection is an ADSL with regular interrupts every 24
>>>>> hours (to prevent/make harder to have i.e. webhosting on you home
>>>>> connection...). The router receives a different IP every time. After
>>>>> the reconnection all the accounts configured on my phone successfully
>>>>> register, except for the OpenSIPS server I am running myself. The
>>>>> server has a static IP and is located somewhere in a collocation. When
>>>>> I used a softphone and forced the router to get a new public IP, the
>>>>> softphone didn't have a problem re-registering with the server.
>>>>> Reseting the phone helps.
>>>>> I suspect this is a firmware bug in the m3, but maybe someone has an
>>>>> idea how to fix this, because the problem appears only with OpenSIPS.
>>>>> The log from the phone is not helpful at all it shows a bunch of
>>>>> register requests, but no answer. I haven't found any register
>>>>> requests in the OpenSIPS log from that particular phone in the debug
>>>>> mode, but I might have overlooked them. What should I put to the
>>>>> config file to isolate the request I am looking for?
>>>>> Cheers,
>>>>> Petr
>>>>>           

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