Checking availability of address when binding in ZMQJS

Question

Checking availability of address when binding in ZMQJS

I'm working with an automated system written in nodeJS that creates on the fly nodes across the cloud connecting them by the means of the ZMQ binding for nodeJS. Sometimes I get the error Error: Address already in use, which is my bad because I have some bug somewhere. I would like to know if it's possible with the nodeJS binding of ZMQ to check the availability of the address before binding it.

node.js
zeromq

Answer 1

It's not really what I was searching for, but in the end I decided to go for the "simple" solution and use a try-catch block to check if there is an error when binding to a host:port. In practice this is what I do:

try {
    receiver.bindSync("tcp://"+host+":" + port);
}
catch (e) {
    console.log(e);
}

Which is stupid and straight forward. I was looking for a more accurate way to do this (for example, as mentioned in the question, a function to check the availability of the address, rather than catching the error).