node/test/pummel/test-net-throttle.js

common = require("../common");
assert = common.assert
net = require("net");
N = 160*1024; // 30kb


chars_recved = 0;
npauses = 0;

console.log("build big string");
var body = "";
for (var i = 0; i < N; i++) {
  body += "C";
}

console.log("start server on port " + common.PORT);

server = net.createServer(function (connection) {
  connection.addListener("connect", function () {
    assert.equal(false, connection.write(body));
    connection.end();
  });
});
server.listen(common.PORT, function () {
  var paused = false;
  client = net.createConnection(common.PORT);
  client.setEncoding("ascii");
  client.addListener("data", function (d) {
    chars_recved += d.length;
    console.log("got " + chars_recved);
    if (!paused) {
      client.pause();
      npauses += 1;
      paused = true;
      console.log("pause");
      x = chars_recved;
      setTimeout(function () {
        assert.equal(chars_recved, x);
        client.resume();
        console.log("resume");
        paused = false;
      }, 100);
    }
  });

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



process.addListener("exit", function () {
  assert.equal(N, chars_recved);
  assert.equal(true, npauses > 2);
});