node/test/pummel/test-tcp-many-clients.js

require("../common");
net = require("net");
// settings
var bytes = 1024*40;
var concurrency = 100;
var connections_per_client = 5;

// measured
var total_connections = 0;

var body = "";
for (var i = 0; i < bytes; i++) {
  body += "C";
}

var server = net.createServer(function (c) {
  c.addListener("connect", function () {
    total_connections++;
    print("#");
    c.write(body);
    c.close();
  });
});
server.listen(PORT);

function runClient (callback) {
  var client = net.createConnection(PORT);

  client.connections = 0;

  client.setEncoding("utf8");

  client.addListener("connect", function () {
    print("c");
    client.recved = "";
    client.connections += 1;
  });

  client.addListener("data", function (chunk) {
    this.recved += chunk;
  });

  client.addListener("end", function () {
    client.close();
  });

  client.addListener("error", function (e) {
    puts("\n\nERROOOOOr");
    throw e;
  });

  client.addListener("close", function (had_error) {
    print(".");
    assert.equal(false, had_error);
    assert.equal(bytes, client.recved.length);

    if (client.fd) {
      puts(client.fd);
    }
    assert.ok(!client.fd);

    if (this.connections < connections_per_client) {
      this.connect(PORT);
    } else {
      callback();
    }
  });
}

server.addListener('listening', function () {
  var finished_clients = 0;
  for (var i = 0; i < concurrency; i++) {
    runClient(function () {
      if (++finished_clients == concurrency) server.close();
    });
  }
});

process.addListener("exit", function () {
  assert.equal(connections_per_client * concurrency, total_connections);
  puts("\nokay!");
});