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fix: live reload port fallback if port is used (#899)

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* Move start reload server into separate module

* Find an unused port when starting the live reload server

* Move findUnusedPort into module

* Add tests for findUnusedPort module

* Refactor findUnusedPort

* Move starting of servers into separate module and add tests

* Remove unused constants.js

* Zap extra line breaks

* Add tests for liveReloadServer

* Rename serverController to start

* Move start into lib/server

* Add portfinder package

* Replace findUnusedPort with portfinder

* nits
This commit is contained in:
Tom Auger 2018-09-12 19:03:52 +01:00 • committed by Endilie Yacop Sucipto
parent c4740f7af2
commit bbef20d345
10 changed files with 291 additions and 84 deletions
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46
lib/start-server.js
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@ -21,12 +21,12 @@ require('babel-register')({
const chalk = require('chalk');
const fs = require('fs');
const program = require('commander');
const openBrowser = require('react-dev-utils/openBrowser');
const tcpPortUsed = require('tcp-port-used');
const CWD = process.cwd();
const env = require('./server/env.js');
const {startDocusaurus} = require('./server/start.js');
if (!fs.existsSync(`${CWD}/siteConfig.js`)) {
console.error(
chalk.red('Error: No siteConfig.js file found in website folder!')
@ -44,41 +44,7 @@ program
.option('--no-watch', 'Toggle live reload file watching')
.parse(process.argv);
let port = parseInt(program.port, 10) || process.env.PORT || 3000;
let numAttempts = 0;
const MAX_ATTEMPTS = 10;
function checkPort() {
tcpPortUsed
.check(port, 'localhost')
.then(inUse => {
if (inUse && numAttempts >= MAX_ATTEMPTS) {
console.log(
'Reached max attempts, exiting. Please open up some ports or ' +
'increase the number of attempts and try again.'
);
process.exit(1);
} else if (inUse) {
console.error(chalk.red(`Port ${port} is in use`));
// Try again but with port + 1
port += 1;
numAttempts += 1;
checkPort();
} else {
// start local server on specified port
const server = require('./server/server.js');
server(port, program.opts());
const {baseUrl} = require(`${CWD}/siteConfig.js`);
const host = `http://localhost:${port}${baseUrl}`;
console.log('Docusaurus server started on port %d', port);
openBrowser(host);
}
})
.catch(ex => {
setTimeout(() => {
throw ex;
}, 0);
});
}
checkPort();
startDocusaurus().catch(ex => {
console.error(chalk.red(`Failed to start Docusaurus server: ${ex}`));
process.exit(1);
});