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

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'use strict';
require('../common');
const assert = require('assert');
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const net = require('net');
const N = 50;
let client_recv_count = 0;
let client_end_count = 0;
let disconnect_count = 0;
const server = net.createServer(function(socket) {
console.error('SERVER: got socket connection');
socket.resume();
console.error('SERVER connect, writing');
socket.write('hello\r\n');
socket.on('end', function() {
console.error('SERVER socket end, calling end()');
socket.end();
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});
socket.on('close', function(had_error) {
console.log('SERVER had_error: ' + JSON.stringify(had_error));
assert.strictEqual(false, had_error);
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});
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});
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server.listen(0, function() {
console.log('SERVER listening');
const client = net.createConnection(this.address().port);
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client.setEncoding('UTF8');
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client.on('connect', function() {
console.error('CLIENT connected', client._writableState);
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});
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client.on('data', function(chunk) {
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client_recv_count += 1;
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console.log('client_recv_count ' + client_recv_count);
assert.strictEqual('hello\r\n', chunk);
console.error('CLIENT: calling end', client._writableState);
client.end();
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});
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client.on('end', function() {
console.error('CLIENT end');
client_end_count++;
});
client.on('close', function(had_error) {
console.log('CLIENT disconnect');
assert.strictEqual(false, had_error);
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if (disconnect_count++ < N)
client.connect(server.address().port); // reconnect
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else
server.close();
});
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});
process.on('exit', function() {
assert.strictEqual(N + 1, disconnect_count);
assert.strictEqual(N + 1, client_recv_count);
assert.strictEqual(N + 1, client_end_count);
});