regress-1697.js

var net = require('net'),
    cp = require('child_process'),
    util = require('util');

if (process.argv[2] === 'server') {
  // Server
  
  var server = net.createServer(function(conn) {
    conn.on('data', function(data) {
      console.log('server received ' + data.length + ' bytes');
    });
  
    conn.on('close', function() {
      server.close();
    });
  });
  server.listen(1234);
    
} else {
  // Client
  
  var serverProcess = cp.spawn(process.execPath, [process.argv[1], 'server']);
  serverProcess.stdout.pipe(process.stdout);
  serverProcess.stderr.pipe(process.stdout);

  var client = net.createConnection(1234, '127.0.0.1');
  client.on('connect', function() {
    var alot = new Buffer(1024),
        alittle = new Buffer(1);
    
    for (var i = 0; i < 100; i++) {
      client.write(alot);
    }
    
    // Block the event loop for 1 second
    var start = (new Date()).getTime();
    while ((new Date).getTime() < start + 1000) {}
    
    client.write(alittle);
    
    client.destroySoon();
  });
}

Needs a little love to run reliably on linux, the client tries to connect (and fails with ECONNREFUSED) before the server process has started up.

https://gist.github.com/325b90295f17c751ed06

The test passes on linux, by the way.