[zeromq-dev] PUB connect first, SUB bind after, doesn't work?

Martin Sustrik sustrik at 250bpm.com
Fri Oct 1 17:12:07 CEST 2010

On 09/28/2010 06:34 PM, Ilja Golshtein wrote:
>>   Koert's examples showed the publisher sending in a batch, and it's
>>   quite normal these would get lost if the subscriber showed up
>>   afterwards.  It's very timing dependent.  Any test with pub sockets
>>   must send a continuous stream, not a single batch.

> Is it normal nothing was received and no TCP connection was established?

Yes, if subsriber arrives after message is sent, it won't get it. It's 
so called "radio broadcast" model.

> Is it normal if "bind" and "connect" reverted everything is fine?

No. The messages should be dropped even then. It's a bug. Hopefully a 
rather  benign one.


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