Lazy Pirate server in C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

using ZeroMQ;

namespace Examples
{
static partial class Program
{
//
// Lazy Pirate server
// Binds REP socket to tcp://*:5555
// Like hwserver except:
// - echoes request as-is
// - randomly runs slowly, or exits to simulate a crash.
//
// Author: metadings
//

public static void LPServer(string[] args)
{
using (var context = new ZContext())
using (var responder = new ZSocket(context, ZSocketType.REP))
{
responder.Bind("tcp://*:5555");

ZError error;
int cycles = 0;
var rnd = new Random();

while (true)
{
ZMessage incoming;
if (null == (incoming = responder.ReceiveMessage(out error)))
{
if (error == ZError.ETERM)
return; // Interrupted
throw new ZException(error);
}
using (incoming)
{
++cycles;

// Simulate various problems, after a few cycles
if (cycles > 16 && rnd.Next(16) == 0)
{
Console.WriteLine("I: simulating a crash");
break;
}
else if (cycles > 4 && rnd.Next(4) == 0)
{
Console.WriteLine("I: simulating CPU overload");
Thread.Sleep(1000);
}

Console.WriteLine("I: normal request ({0})", incoming[0].ReadInt32());

Thread.Sleep(1); // Do some heavy work

responder.Send(incoming);
}
}
}
}
}
}