nodejs/test/parallel/test-net-keepalive.js

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'use strict';
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var common = require('../common');
var assert = require('assert');
var net = require('net');
var serverConnection;
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var echoServer = net.createServer(function(connection) {
serverConnection = connection;
connection.setTimeout(0);
assert.notEqual(connection.setKeepAlive, undefined);
// send a keepalive packet after 50 ms
connection.setKeepAlive(true, common.platformTimeout(50));
connection.on('end', function() {
connection.end();
});
});
echoServer.listen(common.PORT);
echoServer.on('listening', function() {
var clientConnection = net.createConnection(common.PORT);
clientConnection.setTimeout(0);
setTimeout(function() {
// make sure both connections are still open
assert.equal(serverConnection.readyState, 'open');
assert.equal(clientConnection.readyState, 'open');
serverConnection.end();
clientConnection.end();
echoServer.close();
}, common.platformTimeout(100));
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});