Find free tcp port or ports to listen locally.
npm install find-free-port
Find a free port to listen on, begin from 3000
var fp = require("find-free-port")
fp(3000,[], function(err, freePort){
});
Find a free port to listen on, begin from 3000, but stop at 3100 (not including 3100)
var fp = require("find-free-port")
fp(3000,[], 3100, function(err, freePort){
});
Find a free port to listen on, begin from 3000, stop at 3100, bound to ip 127.0.0.1 only
var fp = require("find-free-port")
fp(3000,[], 3100, '127.0.0.1', function(err, freePort){
});
Find a free port to listen on, begin from 3000, bound to ip 127.0.0.1 only
var fp = require("find-free-port")
fp(3000,[], '127.0.0.1', function(err, freePort){
});
Find a few free ports to listen on, begin from 3000, bound to ip 127.0.0.1 only
var fp = require("find-free-port")
fp(3000,[], 3100, '127.0.0.1', 3, function(err, p1, p2, p3){
});
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