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CLI finds and uses 1st available port when none specified. #685

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merged 2 commits into from
Nov 3, 2016
Merged

CLI finds and uses 1st available port when none specified. #685

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33dad8f
CLI finds and uses 1st available port when none specified.
benwiley4000 Nov 3, 2016
335aa9e
Updated for case where options but not args specify port.
benwiley4000 Nov 3, 2016
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29 changes: 25 additions & 4 deletions bin/webpack-dev-server.js
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ var open = require("opn");
var fs = require("fs");
var net = require("net");
var url = require("url");
var portfinder = require("portfinder");

// Local version replaces global one
try {
Expand Down Expand Up @@ -46,6 +47,11 @@ var CONNECTION_GROUP = "Connection options:";
var RESPONSE_GROUP = "Response options:";
var BASIC_GROUP = "Basic options:";

// Taken out of yargs because we must know if
// it wasn't given by the user, in which case
// we should use portfinder.
var DEFAULT_PORT = 8080;

yargs.options({
"lazy": {
type: "boolean",
Expand Down Expand Up @@ -143,7 +149,6 @@ yargs.options({
},
"port": {
describe: "The port",
default: 8080,
group: CONNECTION_GROUP
},
"socket": {
Expand Down Expand Up @@ -190,9 +195,6 @@ function processOptions(wpOpt) {
if(argv.public)
options.public = argv.public;

if(argv.port !== 8080 || !options.port)
options.port = argv.port;

if(argv.socket)
options.socket = argv.socket;

Expand Down Expand Up @@ -294,6 +296,25 @@ function processOptions(wpOpt) {
if(argv["open"])
options.open = true;

// Kind of weird, but ensures prior behavior isn't broken in cases
// that wouldn't throw errors. E.g. both argv.port and options.port
// were specified, but since argv.port is 8080, options.port will be
// tried first instead.
options.port = argv.port === DEFAULT_PORT ? (options.port || argv.port) : (argv.port || options.port);
if(options.port) {
startDevServer(wpOpt, options);
return;
}

portfinder.basePort = DEFAULT_PORT;
portfinder.getPort(function(err, port) {
if(err) throw err;
options.port = port;
startDevServer(wpOpt, options);
});
}

function startDevServer(wpOpt, options) {
var protocol = options.https ? "https" : "http";

// the formatted domain (url without path) of the webpack server
Expand Down
1 change: 1 addition & 0 deletions package.json
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Expand Up @@ -13,6 +13,7 @@
"express": "^4.13.3",
"http-proxy-middleware": "~0.17.1",
"opn": "4.0.2",
"portfinder": "^1.0.9",
"serve-index": "^1.7.2",
"sockjs": "0.3.18",
"sockjs-client": "1.1.1",
Expand Down