PHP与C# Socket通信

PHP写的服务器端，C#写的客户端

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

namespace UpdClient
{
    class Program
    {
        static void Main(string[] args)
        {
           //设定服务器IP地址  
            IPAddress ip = IPAddress.Parse("127.0.0.1");
            Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            try
            {
                clientSocket.Connect(new IPEndPoint(ip, 2049)); //配置服务器IP与端口  
                Console.WriteLine("连接服务器成功");
            }
            catch
            {
                Console.WriteLine("连接服务器失败，请按回车键退出！");
                return;
            }
            string welcome = "watch";
            byte[] data = new byte[1024];
            data = Encoding.ASCII.GetBytes(welcome);
            clientSocket.SendTo(data, data.Length, SocketFlags.None, new IPEndPoint(ip, 2048));
            //通过clientSocket接收数据  
            byte[] result = new byte[1024];
            int receiveLength = clientSocket.Receive(result);
            Console.WriteLine("接收服务器消息：{0}", Encoding.ASCII.GetString(result, 0, receiveLength)); 
        }
    }
}