Re: [OpenSIPStack] OpenSBC terminate connection
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Re: [OpenSIPStack] OpenSBC terminate connection
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From: <jo...@op...> - 2008-10-27 12:08:42
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Ok I see the fault. Thanks for the wireshark capture. Fix will be in
shortly.
André Mamitzsch wrote:
> Hello Joegen,
>
> I have compiled the latest version from CVS. There is a small typo in
> opensbc/SBCB2BUAEndPoint.h which must be corrected to get it working.
>
> --- SBCB2BUAEndPoint.h.orig 2008-10-27 12:15:46.000000000 +0100
> +++ SBCB2BUAEndPoint.h 2008-10-27 12:03:28.000000000 +0100
> @@ -50,7 +50,7 @@
> #ifndef SBCB2BUAENDPOINT_H
> #define SBCB2BUAENDPOINT_H
>
> -#include "B2BUAendPoint.h"
> +#include "B2BUAEndPoint.h"
>
> namespace B2BUA
> {
>
> I have tested the call scenario again, but it still fails. The
> softswitch is responding with a "400 Bad Request" to the BYE message
> now. I have sent you the wireshark offline.
>
> Regards,
>
> Andre
>
>
> jo...@op... schrieb:
>> Andre,
>>
>> This is a known problem area in OpenSBC. Since we are a B2BUA and
>> not a proxy we terminate our dialogs based on successful processing
>> of a BYE request. OpenSBC does not wait for a final response before
>> it destroys connections. This ensures that the SBC does not end up
>> with ghost sessions as well if a certain UA is not able to handle
>> authenticated BYE requests. This is the second time I have received
>> this report regarding this problem. Can you provide me a with a
>> level 5 log for this problematic call offlist? I'll see if an easy
>> workaround is possible. If you could, please also attach a wire
>> shark capture of the successful call you made using a UA directly
>> calling your softswitch. My e-mail address is jo...@op...
>>
>> Joegen
>>
>> André Mamitzsch wrote:
>>> Hello,
>>>
>>> I have seen a strange behavior with the OpenSBC1.1.5RC1. The
>>> scenario is as follows:
>>>
>>> The OpenSBC is configured in B2BUAUpperReg mode.
>>>
>>> I place a call from a SIP client (A) to a PSTN Phone (B). The
>>> connection is established whithout any problems. A goes on hook and
>>> sends a BYE to which the SBC immediately replies with a 200 OK.
>>>
>>> Another BYE message is being sent out to the softswitch platform.
>>>
>>> The softswitch challenges authentication and therefore responds with
>>> a 401 unauthorized message. Since the SBC, at least that's my
>>> assumption, has already successfully terminated the internal
>>> connection there is no match and the requested authenticated BYE
>>> will never be send out. This behavior results in ghost connections
>>> and the billing runs until B goes on-hook as well.
>>>
>>> I have tested the same scenario with my SIP client directly
>>> connected to our softswitch platform and did not detect the problem
>>> there. Upon receiving the 401 unauthorized message, the client
>>> resends the BYE containing the authentication information.
>>>
>>> I have checked the RFC 3261 this morning and tried to find out
>>> whether it is a regular behavior to reply to a BYE message with
>>> authentication challenge or not. I could not find any hint there.
>>>
>>> How difficult is it to change this behavior and wait for
>>> confirmation before terminating the entire connection ?
>>>
>>> Regards,
>>>
>>> Andre
>>>
>>>
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>>
>>
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