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- From: "elie" <elie AT flashmail.com>
- To: Michael Tuexen <Michael.Tuexen AT micmac.franken.de>, elie AT flashmail.com
- Cc: discussion AT sctp.de
- Subject: Re: [SCTP-Discussion] data arrive on gap acks
- Date: Sun, 09 Mar 2008 20:00:47 +0800
- List-archive: <http://lists.franken.de/pipermail/sctp-discussion>
- List-id: SCTP Discussions <sctp-discussion.sctp.de>
Michael,
Thanks you very much for your response. We are checking the
server side now (which is of another implementation).
Elie.
>Hi Elie,
>
>if all user messages are sent in the same stream, the
>server behaves correctly. It can not deliver any TSN
>greater than 2951 before delivering 2951 which is
>missing.
>
>The problem is the client not (re)transmitting the TSN
>2951.
>
>Best regards
>Michael
>
>On Mar 9, 2008, at 9:51 AM, elie wrote:
>> Hello,
>> I'm observing the following scenario when using SCTP lib
>> as a server: a client is sending 30 data chunk in three
>> packets, than another 30 with a gap in the TSN (of 1).
>> I'm not sure why is this gap, the client is of another
>> implementation.
>>
>> Overall it seems ok, but the problem is that it seems the
>> dataArriveNotif is not called for the gap acks. Here is a
>> sample scenario (a wireshark translation):
>>
>> client ===> 12 DATA packets, TSN 2921-2932
>> client ===> 12 DATA packets, TSN 2933-2944
>> client ===> 6 DATA packets, TSN 2945-2950
>>
>> server <=== SACK, Cumulative TSN ACK 2944
>>
>> client ===> 12 DATA packets, TSN 2952-2963
>>
>> server <=== SACK, Cumulative TSN ACK 2950
>> gap ack 2952 to 2963
>>
>> client ===> 12 DATA packets, TSN 2964-2975
>> client ===> 6 DATA packets, TSN 2976-2981
>>
>> server <=== SACK, Cumulative TSN ACK 2950
>> gap ack 2952 to 2975
>> server <=== SACK, Cumulative TSN ACK 2950
>> gap ack 2952 to 2981
>>
>> For some reason I don't get dataArriveNotif for TSN
>> greater that 2950 (I get only the first 30). Can you
>> please help me with this issue,
>> thanks,
>> Elie.
>>
>>
>> _______________________________________________
>> sctp-discussion mailing list
>> sctp-discussion AT sctp.de
>> http://www.sctp.de/mailman/listinfo/sctp-discussion
>>
>
- [SCTP-Discussion] data arrive on gap acks, elie, 03/09/2008
- Re: [SCTP-Discussion] data arrive on gap acks, Michael Tuexen, 03/09/2008
- <Possible follow-up(s)>
- Re: [SCTP-Discussion] data arrive on gap acks, elie, 03/09/2008
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