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Re: [GNUnet-developers] Cadet bug: blocked cadet channel in case of non
From: |
Schanzenbach, Martin |
Subject: |
Re: [GNUnet-developers] Cadet bug: blocked cadet channel in case of non reliablle channel |
Date: |
Sun, 24 Feb 2019 21:54:50 +0100 |
What I am trying to say is: The combination of an unreliable transport with in
order message delivery inevitably leads to a "lock" (=wait for next "in oder"
message).
If you want UDP behaviour and implement you own message queue/ordering on top,
you should use a different option.
> On 24. Feb 2019, at 21:50, Schanzenbach, Martin <address@hidden> wrote:
>
> Signed PGP part
> Hi,
>
> a quick look into the bug (not a CADET expert) makes me questions the
> proposed behaviour:
>
> "Proposal how to change that behavior:
>
> We will not drop the oldest message in the queue, but we send as much
> messages from the queue as we have messages with consecutive MIDs. After that
> the queue is empty, or we again wait for the message that is missing now.
> Means we have to set the expected MID to that MID, because we are now waiting
> for another message to arrive."
>
> Now, looking at the API of CADET, this channel has the following description:
>
> /**
> * Default options: unreliable, default buffering, not out of order.
> */
> GNUNET_CADET_OPTION_DEFAULT = 0x0,
>
>
> Ergo, messages are _not_ delivered out of order. But that seems to be what
> you propose?
> The transport is unreliable. So if you need any other behaviour, don't you
> just want a different OPTION? There are a few to choose from with that
> behaviour, no?
>
> BR
>
>> On 24. Feb 2019, at 21:33, t3sserakt <address@hidden> wrote:
>>
>> Signed PGP part
>> Hey *,
>>
>> please have a look onto this finding:
>>
>> https://bugs.gnunet.org/view.php?id=5597
>>
>> If nobody has a veto, I would change the behavior of non reliable cadet
>> channels, as I proposed in the bug description.
>>
>>
>> Cheers
>>
>>
>> t3sserakt
>>
>>
>>
>>
>>
>
>
>
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