Re: [mosquitto-dev] Help needed, odd behaviour: What are the reasons the

[Felipe de Andrade Neves Lavratti <felipelav@xxxxxxxxx>]

Sorry! I forgot to mention, I've already updated to 1.4.2. The last
log I e-mailed has run in the 1.4.2.

On Tue, Jul 7, 2015 at 7:29 PM, Roger Light <roger@xxxxxxxxxx> wrote:
> Hi Felipe,
>
> I'll have to look at this again tomorrow night, but in the meantime
> please consider trying a more up to date version of mosquitto as well.
> There were 206 files changed, 5532 insertions(+), 2524 deletions(-)
> from some point after 1.3.5 and version 1.4.2 so you may be chasing a
> problem that isn't as bad as you think (there is still a problem for
> sure though).
>
> Cheers,
>
> Roger
>
>
>
> On Tue, Jul 7, 2015 at 11:20 PM, Felipe de Andrade Neves Lavratti
> <felipelav@xxxxxxxxx> wrote:
>> The client implementation is mine-ish, actually. The client runs on a
>> baremetal firmware (contiki) where there's no dynamic memory
>> allocation, that's one reason I need max inflight=1, the other is I
>> need order granteed.
>>
>> I changed the keep alive timer by myself, I'll test with 60s.
>>
>> I am not using client expiry. Non connection has been remade on tests,
>> I think I didn't get what you meant.
>>
>>
>> New info:
>>
>> I've just been debugging the mosquitto broker on the moment of the
>> detected odd behavior. The client context (struct mosquitto *) that
>> has stopped receiving PUBLISH, has all pending messages in the
>> `mosq_ms_queued` state. The point is that they won't leave that state.
>> Didn't find out why yet.
>>
>> On Tue, Jul 7, 2015 at 7:06 PM, Karl Palsson <karlp@xxxxxxxxxxxx> wrote:
>>> -----BEGIN PGP SIGNED MESSAGE-----
>>> Hash: SHA1
>>>
>>> Felipe de Andrade Neves Lavratti <felipelav@xxxxxxxxx> wrote:
>>>> Again,
>>>>
>>>> The problem is easy to replicate:
>>>>
>>>> The setup is this:
>>>> - I have 6 clients connected to the broker
>>>> - All clients are subscribed to the topic 'test'
>>>> - All clients reply on topic 'testout' for each message received in topic 'test'
>>>
>>> fwiw, you might find it easier to diagnose if you send a sequence
>>> instead of a fixed string.  I personally found the mid's to be rather
>>> odd in your earlier trace,
>>>
>>>> - All clients send PINGs each 20s
>>>> - A connection expires in 60s
>>>
>>> so, is keepalive 20sec, and you have private modified code then?  and
>>> you're still based on 1.3.x?  or something else?  note in your traces
>>> that d==0, so persistent client expiry is completely irrelevant, custom
>>> code or not.
>>>
>>>> - Every message is QOS2
>>>>
>>>> The test routine is this:
>>>> Publishes to the topic 'test' periodically in a frequency faster than
>>>> the clients can answer (on my slow 802.15.4 network I use 3 seconds)
>>>
>>> honestly I think your contiki setup is fundamentally broken, and you
>>> should chase this up there.  read the pinola paper just for starters,
>>> you should be looking at _maybe_ 250ms.  3 seconds is _insane_ and even
>>> if you hack mosquitto to make this particular test case pass, I think
>>> you will just see new problems down the road.  please consider Roger's
>>> points about (ab)using (or trying) client expiry to "fix" things that
>>> maybe need a different solution.
>>>
>>> Cheers,
>>> Karl P
>>>
>>>
>>>> until you realise that the broker will stop sending any publish to a
>>>> client until the client reconnects.
>>>>
>>>> It is feeling like a bug, what extra info you may need on this?
>>>>
>>>> Bellow another log of the problem.
>>>>
>>>> --------
>>>>
>>>>
>>>> **** Send a PUBLISH to everybody, including fe80::215:8d00:76:813f.
>>>>
>>>> 1436302152: Sending PUBLISH to aaaa::215:8d00:76:813a (d0, q2, r0,
>>>> m46, 'test', ... (9 bytes))
>>>> 1436302152: Sending PUBLISH to fe80::215:8d00:76:8140 (d0, q2, r0,
>>>> m46, 'test', ... (9 bytes))
>>>> 1436302152: Sending PUBLISH to fe80::215:8d00:76:813b (d0, q2, r0,
>>>> m46, 'test', ... (9 bytes))
>>>> 1436302152: Sending PUBLISH to fe80::215:8d00:76:8136 (d0, q2, r0,
>>>> m46, 'test', ... (9 bytes))
>>>> 1436302152: Sending PUBLISH to fe80::215:8d00:76:8139 (d0, q2, r0,
>>>> m46, 'test', ... (9 bytes))
>>>> 1436302152: Sending PUBLISH to fe80::215:8d00:76:813f (d0, q2, r0,
>>>> m46, 'test', ... (9 bytes))
>>>>
>>>
>>> -----BEGIN PGP SIGNATURE-----
>>> Version: GnuPG v1.4.11 (GNU/Linux)
>>>
>>> iQIcBAEBAgAGBQJVnE1PAAoJEBmotQ/U1cr2imEP/RPSa4BL3/6j+Rue8m02lGHV
>>> TEXoFCkbStWxAlq8hxA/8o48ok5kcr0cpnYE3/7HudXtRncC62PftNpcDcM1PsYZ
>>> 1ht2QIk5Xt5zrBQEd37Wi/h2ZJ/5XGaxI4Jxqr7Zz98LjfSR4Hrx+oRbogMZVtcI
>>> Tc2QQDZkdcN7C8ZyReRCQs5yIDABeBL3IqCxQ+ndFXQR/kcghm01nRtbq78qo5NR
>>> 9d7W7gRxDb5mzI/sR+ULf+pqeyFFfz77cme4hAtvg4cvd04oc8b/dfCk9gWATJce
>>> ECkVCWQl6kg+QDqW/v/bkkcGN5UJMlgSO0j74tFkQqno8cQydmb33Zt+3yW9t1wM
>>> lbxWBrihASoxx6PrvIFheXAJXDfz1hwKMqni6dyuQ1UGX8t09RyCd4s0oFg3WTQ1
>>> 15/mQC/JMKmrbwHp3y9BPJCA4/mda3lgf+wj5CZyVtc+dVyapaNf3qh3ZhqnDiIA
>>> J5RX+41dYTX1HEhPFAXLnaufShVP2MsSDvJ2U8U3yqUhfDVL6/9axV4Rr6KnW5Uu
>>> jfnk3nYsWg18yIsY5hkNTee2V2o/zVJYAJgypjruPPmm8vzQX6TdarICyR3BnKZd
>>> bT+fVNyT90OUST1d/SHR5QiWsTFauzuAwpnTfd4ZOfO7ITvCwPf520qk1yHV5Eaw
>>> YrzmZD9JqRHobfapgkhw
>>> =b6ZI
>>> -----END PGP SIGNATURE-----
>>>
>>> _______________________________________________
>>> mosquitto-dev mailing list
>>> mosquitto-dev@xxxxxxxxxxx
>>> To change your delivery options, retrieve your password, or unsubscribe from this list, visit
>>> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev
>>
>>
>>
>> --
>> Skype: felipeanl
>> _______________________________________________
>> mosquitto-dev mailing list
>> mosquitto-dev@xxxxxxxxxxx
>> To change your delivery options, retrieve your password, or unsubscribe from this list, visit
>> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev
> _______________________________________________
> mosquitto-dev mailing list
> mosquitto-dev@xxxxxxxxxxx
> To change your delivery options, retrieve your password, or unsubscribe from this list, visit
> https://dev.eclipse.org/mailman/listinfo/mosquitto-dev



-- 
Skype: felipeanl