[zeromq-dev] How to limit the range for zmq_bind() in C++?

Brett Viren brett.viren at gmail.com
Thu May 14 18:29:49 CEST 2020

Hi Mike,

"Alexander, Michael" <Michael.Alexander at xerox.com> writes:

> I have been using zmq_bind(socket, “tcp://lo:*”) to bind to a random
> unused port.  I can find examples using other languages to use
> random_port to limit the range of ports (e.g. only assign a port
> between 30000 and 31000).  Is there a way to do this in C++?

Maybe it's heavy handed, but I do this by manually looping over a port
range, continuing until I no longer get an error from cppzmq's


Actually, now I check cppzmq and I'm not sure why I did this because I
see cppzmq simply passes through the address to zmq_bind().  So, if
"tcp://lo:*" works with libzmq, I think it should work with cppzmq.

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