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

common = require("../common");
assert = common.assert
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++;
    common.print("#");
    c.write(body);
    c.end();
  });
});

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

  client.connections = 0;

  client.setEncoding("utf8");

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

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

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

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

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

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

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

server.listen(common.PORT, 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);
  console.log("\nokay!");
});