[zeromq-dev] Disable resend of Publisher after reconnection

[Bachmair Florian - flexSolution GmbH]

ok, thank you!

I have to think about that, because I want to use curve as well, and 
therefore I would need tcp...

Am 27.08.2015 um 14:12 schrieb Sergey Zinov:
> Seems like that should be the case. TCP is a reliable protocol, it 
> buffers all data till it acknowledged by receiver and resend when 
> needed. Switch to the UDP if don't need that reliability.
>
> On 27.08.2015 14:07, Bachmair Florian - flexSolution GmbH wrote:
>> This does not work either :/
>>
>> I'm unsing PUB/SUB via tcp.
>>
>> I have captured the tcp connection with tcpdump and I saw that after 
>> I unplug the cable I get tcp retransmission packets.
>>
>> May this be more a behaviour of tcp itself than of zmq?
>>
>>
>> Am 27.08.2015 um 13:39 schrieb Sergey Zinov:
>>> Hi,
>>>
>>> Try to set ZMQ_SNDHWM to 1. By the way which transport are you using?
>>>
>>> On 27.08.2015 11:52, Bachmair Florian - flexSolution GmbH wrote:
>>>> I tried it, but it does not work!
>>>>
>>>> Don't know If I get that right, but even If I set ZMQ_RECONNECT_IV 
>>>> to "-1" my PUB and SUB Sockets are reconnecting to each other after 
>>>> I replug the cable
>>>>
>>>> Am 27.08.2015 um 10:59 schrieb Doron Somech:
>>>>>
>>>>> I'm not sure, but try to set  ZMQ_IMMEDIATE option.
>>>>>
>>>>> On Aug 27, 2015 11:38 AM, "Bachmair Florian - flexSolution GmbH" 
>>>>> <florian.bachmair at flexsolution.eu 
>>>>> <mailto:florian.bachmair at flexsolution.eu>> wrote:
>>>>>
>>>>>     Hello!
>>>>>
>>>>>     Is there a opportunity to tell the publisher not to resend
>>>>>     messages?
>>>>>
>>>>>     I have two stations A and B
>>>>>
>>>>>     A publishes all the time
>>>>>     B receives it
>>>>>
>>>>>     A-PUB 10
>>>>>     B-SUB 10
>>>>>     A-PUB 20
>>>>>     B-SUB 20
>>>>>     A-PUB 30
>>>>>     B-SUB 30
>>>>>     A-PUB 40
>>>>>     B-SUB 40
>>>>>     ---unplug cable
>>>>>     A-PUB 50
>>>>>     A-PUB 60
>>>>>     A-PUB 70
>>>>>     ---plug cable again
>>>>>     B-SUB 50
>>>>>     B-SUB 60
>>>>>     B-SUB 70
>>>>>     ....
>>>>>
>>>>>
>>>>>     B does some routines after it gets those values. But I'm not
>>>>>     interested
>>>>>     in 50 and 60 any more, I just want the 70 after reconnection.
>>>>>     I do Heartbeating so I detect connection lost on my own and I can
>>>>>     request the last value as well. So is this possible to disable the
>>>>>     resend mechanism?
>>>>>
>>>>>     Thx
>>>>>     Florian
>>>>>     _______________________________________________
>>>>>     zeromq-dev mailing list
>>>>>     zeromq-dev at lists.zeromq.org <mailto:zeromq-dev at lists.zeromq.org>
>>>>>     http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>
>>>>
>>>>
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>>>
>>>
>>> -- 
>>> Sergey Zinov
>>>
>>> Wissenschaftlicher Mitarbeiter
>>> Fachbereich Elektrotechnik, Maschinenbau und Wirtschaftsingenieurwesen
>>> Hochschule Anhalt
>>> /
>>> Research Assistant
>>> Department of Electrical, Mechanical and Industrial Engineering
>>> Anhalt University of Applied Sciences
>>>
>>> Phone: +4915738145172
>>>
>>>
>>> _______________________________________________
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>>> zeromq-dev at lists.zeromq.org
>>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>>
>>
>>
>> _______________________________________________
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>> zeromq-dev at lists.zeromq.org
>> http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>
>
> -- 
> Sergey Zinov
>
> Wissenschaftlicher Mitarbeiter
> Fachbereich Elektrotechnik, Maschinenbau und Wirtschaftsingenieurwesen
> Hochschule Anhalt
> /
> Research Assistant
> Department of Electrical, Mechanical and Industrial Engineering
> Anhalt University of Applied Sciences
>
> Phone: +4915738145172
>
>
> _______________________________________________
> zeromq-dev mailing list
> zeromq-dev at lists.zeromq.org
> http://lists.zeromq.org/mailman/listinfo/zeromq-dev

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