C# Multi-threaded Server - Cross Domain Policy

Question

I have a server, listening for connections from a SWF file in browser.

When running on local, it picks up a connection then drops it very soon after leaving in the log:

[31/1/2016 18:10:14] 127.0.0.1connected. Full 127.0.0.1:58482

[31/1/2016 18:10:14] Got < policy-file-request/> from client 0

[31/1/2016 18:10:16] Client0 disconnected and removed.

This is not logged when the server is ran and the client is launched in debug mode in flashdevelop, but the client connects and acts as desired.

I am including my TcpClient class, have i made a mistake or typo or should this be behaving differently when ran in browser and not in flashdevelop?

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;
using System.Net.Sockets;

namespace ParticleFramework.Communication
{
    class TcpClient
    {
        #region Required Variables
        public Socket socket;
        public int index;
        private byte[] dataBuffer = new byte[0x400];
        private AsyncCallback ReceiveCallback;
        private AsyncCallback SendCallback;
        #endregion

        #region ArchiCruise Vars
        public ArchiCruise.Users.UserObject userObject;
        public string ip;
        #endregion

        public TcpClient(Socket sock, int num)
        {
            index = num;
            socket = sock;

            ip = socket.RemoteEndPoint.ToString().Split(new char[] { ':' })[0];

            ReceiveCallback = new AsyncCallback(this.ReceivedData);
            SendCallback = new AsyncCallback(this.sentData);

            this.WaitForData();
        }

        public void Disconnect()
        {
            if (socket.Connected)
            {
                socket.Close();
                if (userObject != null) userObject.remove();
                Particle.Server.removeClient(this);
                Log.Info("Client" + this.index + " disconnected and removed.");
                Console.WriteLine("Client" + this.index + " disconnected.");
            }
        }

        private void ReceivedData(IAsyncResult iAr)
        {
            try
            {
                int count = 0;

                try
                {
                    count = socket.EndReceive(iAr);
                }
                catch
                {
                    Disconnect();
                }

                StringBuilder builder = new StringBuilder();
                builder.Append(System.Text.Encoding.Default.GetString(this.dataBuffer, 0, count));
                string str = System.Text.Encoding.Default.GetString(this.dataBuffer, 0, count);

                if (str.Contains("<policy-file-requet/>"))
                {
                    Log.Info("Sending policy file to client" + this.index);
                    rawSend("<?xml version\"1.0\"?><cross-domain-policy><allow-access-from-domain=\"*\" to-ports=\"*\" /><cross-domain-policy>" + Convert.ToChar(0));
                }
                else if (!(str.ToString() == ""))
                {
                    string packet = str.Substring(0, str.Length - 1);
                    //packet = ArchiCruise.Security.Encryption.decrypt(packet);
                    Log.Info("Got " + str + " from client " + this.index);

                    Particle.packetClass.handle(packet, this);
                }
                else
                {
                    Disconnect();
                }
            }
            catch (Exception exception)
            {
                Log.Info("Data recieve error: " + exception.ToString() + " " + exception.Source);
                Disconnect();
            }
            finally
            {
                this.WaitForData();
            }
        }

        private void WaitForData()
        {
            try
            {
                socket.BeginReceive(this.dataBuffer, 0, this.dataBuffer.Length, SocketFlags.None, this.ReceiveCallback, socket);
            }
            catch
            {
                Disconnect();
            }
        }

        public void sendData(string Data)
        {
            Data += (char)1;
            rawSend(Data);
        }

        internal void rawSend(string Data)
        {
            try
            {
                Data += "\0";
                byte[] bytes = System.Text.Encoding.Default.GetBytes(Data);

                socket.BeginSend(bytes, 0, bytes.Length, SocketFlags.None, new AsyncCallback(this.sentData), null);
                Log.Info("Sent " + Data + " to client " + this.index);
            }
            catch
            {
                Disconnect();
            }
        }

        private void sentData(IAsyncResult iAr)
        {
            try
            {
                socket.EndSend(iAr);
            }
            catch
            {
                Disconnect();
            }
        }
    }
}

Answer 1

You've made a spelling mistake.

if (str.Contains("<policy-file-requet/>"))

Should be

if (str.Contains("<policy-file-request/>"))