[Mono-list] simple socket code on osx fails to flush

Carlo Kok ck at remobjects.com
Wed Aug 29 19:27:58 UTC 2012

I'm probably missing something simple, but this following code on OSX 
sometimes doesn't properly send every bit before closing when talking to 
OSX from Windows (over network).

At first I thought it was my network but a colleague had at the same 
issue at home. What am I missing? If i set a breakpoint on the shutdown 
(in monodevelop) it does end up sending everything.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Net;
using System.Runtime.InteropServices;
using System.Threading;
using System.Net.Sockets;
namespace msock

class Program {
static void Main (string[] args)
         TcpListener t = new TcpListener (1118);
         t.Start ();
         while (true) {
                 var socket = t.AcceptSocket();

                 var x = new byte[130400];
                 for (int i = 0; i < x.Length; i ++)
                         x[i] = (byte)((int)('a')+(i % 26));
                 x[x.Length-4] = (int)'D';x[x.Length-3] = 
(int)'O';x[x.Length-2] = (int)'N';x[x.Length-1] = (int)'E';

                         SocketError er;
                         int n;
                         n= socket.Send(x, 0, x.Length, 
SocketFlags.None, out er);

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