[zeromq-dev] Publisher side filter question

[Lucas Hope]

Hi Roy,

Doesn't ZMQ 3.x do just what you want, as per the documentation you posted?

What is the problem?

Luke


On Thu, Aug 22, 2013 at 10:47 AM, Roy Liu <liuchuanbo at gmail.com> wrote:

> Has anyone work with this scenario?
> Any information about the filter on the publisher side?
>
>
> On Wed, Aug 21, 2013 at 10:42 PM, <liuchuanbo at gmail.com> wrote:
>
>> Hi, everyone
>>
>> In ZMQ guide http://zguide.zeromq.org/page:all, I read:
>>
>>
>>    - From ØMQ v3.x, filtering happens at the publisher side when using a
>>    connected protocol (tcp: *or ipc:*). Using the epgm:// protocol,
>>    filtering happens at the subscriber side. In ØMQ v2.x, all filtering
>>    happened at the subscriber side.
>>
>>
>> So, I need to implement this scenario:
>>
>> 1. In publisher side: PUB
>> 2. In subscriber side: SUB1, SUB2
>> 3. PUB can send characters from A to Z.
>>  4. SUB1 ONLY receive C character
>>     SUB2 ONLY receive D character.
>>
>> How to setup PUB side filter which can send C to SUB1 and D to SUB2?
>> This is like that a mailbox only receive his newspapers  or magazines,
>> not receive all mails and "filter" by itself. I wander PUB side filter is
>> that clever postman :)
>>
>> If filtering happens at sub side, PUB will send all the message(A-Z
>> characters) to all the SUBs, which occupy too much network resource and be
>> not efficient.
>>
>>
>> Anyone can help?
>>
>> Thanks
>>
>> Roy.
>>
>
>
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-- 
---------------------------------------------------
Dr Lucas Hope - lucas.r.hope at skype
Machine Learning and Software Engineering Consultant
Melbourne, Australia
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