[zeromq-dev] Disable resend of Publisher after reconnection

[Bachmair Florian - flexSolution GmbH]

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
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>>>
>>>
>>>
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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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