22 lines
478 B
JavaScript
22 lines
478 B
JavaScript
const net = require('net');
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exports = function(port, host) {
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return new Promise(resolve => {
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const server = net.createServer();
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server.unref();
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server.on('error', () => resolve(false));
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const options = {
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port
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};
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if (host) options.host = host;
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server.listen(options, () => {
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server.close(() => {
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resolve(true);
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});
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});
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});
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};
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module.exports = exports;
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