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Dynamic port switching (#516)

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This commit is contained in:
Kaveh Khorram 2018-04-10 08:48:44 -07:00 • committed by Joel Marcey
parent 80ece69a10
commit bbbe311004
2 changed files with 31 additions and 20 deletions
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49
lib/start-server.js
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@ -37,23 +37,34 @@ const program = require('commander');
program.option('--port <number>', 'Specify port number').parse(process.argv);
const port = parseInt(program.port, 10) || 3000;
var port = process.env.PORT || 3000;
var numAttempts = 0;
var maxAttempts = 10;
checkPort();
tcpPortUsed
.check(port, 'localhost')
.then(function(inUse) {
if (inUse) {
console.error(chalk.red('Port ' + port + ' is in use'));
process.exit(1);
} else {
console.log('Starting Docusaurus server on port ' + port + '...');
// start local server on specified port
const server = require('./server/server.js');
server(port);
}
})
.catch(function(ex) {
setTimeout(function() {
throw ex;
}, 0);
});
function checkPort() {
tcpPortUsed
.check(port, 'localhost')
.then(function(inUse) {
if (inUse && numAttempts >= maxAttempts) {
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 {
console.log('Starting Docusaurus server on port ' + port + '...');
// start local server on specified port
const server = require('./server/server.js');
server(port);
}
})
.catch(function(ex) {
setTimeout(function() {
throw ex;
}, 0);
});
}