JSPM – find-free-port@2.0.0

Package Exports

find-free-port

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (find-free-port) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

find-free-port

Find free tcp port or pors to listen on. The definition of 'free' port is that connecting to this port and host ('localhost' by default) will not succeed, and thus 'free'.

Installation

npm install find-free-port --save

Examples

Find a free port to listen on that is >= 3000

var fp = require("find-free-port")
fp(3000, function(err, freePort){
});

Find a free port to listen on that is >= 3000 and < 3100

var fp = require("find-free-port")
fp(3000, 3100, function(err, freePort){
});

Find 3 free ports to listen on that is >= 3000 locally

var fp = require("find-free-port")
fp(3000, 3100, '127.0.0.1', 3, function(err, p1, p2, p3){
});

Find a free port that is >= 3000 and at host 192.168.100.1

var fp = require("find-free-port")
fp(3000, "192.168.100.1", function(err, freePort){
});

Promise

If the callback is omitted, then the call returns a Promise that resolve to a list of avaiable ports:

var fp = require("find-free-port")
fp(3000).then(([freep]) => {
    console.log('found ' + freep);
}).catch((err)=>{
    console.error(err);
});