ZMQ subscriber doesn't receive message first time occasionally.
Neeraj0019 opened this issue · comments
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Issue description
We have a ZMQ PUB SUB socket implemented as part of 2 different application as soon as subscriber service starts it subscribes to a particular string format. Sometimes we see even when publisher has published the message subscriber didn't receive it and it happens only for the first message occasionally the same message after some time is received properly.
Environment
- libzmq version (commit hash if unreleased):
- OS: pyzmq-24.0.1-2
Minimal test code / Steps to reproduce the issue
What's the actual result? (include assertion message & call stack if applicable)
What's the expected result?
This is the late joiner problem https://zguide.zeromq.org/docs/chapter5/
This is the late joiner problem https://zguide.zeromq.org/docs/chapter5/
@bluca
Hi Bluca,
Thanks for the reply but in my case the subscriber had not joined late it already in the polling state for around 10-15 sec still when publisher published the message, subscriber is not getting it but the very next message (same one with retry after 5 sec) it is able to get it. And this happens occasionally.
Br,
Neeraj