const pg = require('pg'),
    net = require('net'),
    stream = new net.Stream(),
    pgConfig = {
        user: 'user',
        database: 'database',
        password: 'password',
        port: 5432,
        stream: stream
    },
    connectionTimeout = 3000,
    client = new pg.Client(pgConfig);

stream.setTimeout(connectionTimeout);
stream.on('timeout', () => {
    console.log('Connection timeout');
    socket.destroy();
});

client.connect();