socket的BeginConnect(EndPoint remoteEP,AsyncCallback callback,objcet state);个人理解

最新推荐文章于 2023-09-10 17:36:08 发布

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最新推荐文章于 2023-09-10 17:36:08 发布

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文章标签：游戏 c# json

原文链接：http://www.cnblogs.com/yujunxiaobai/p/10529151.html

本文介绍了C#中socket的BeginConnect()方法，用于异步连接远程服务器。该方法接收一个EndPoint参数指定服务器地址，并在新的线程中启动异步操作。在回调委托中使用EndConnect()结束连接，实现并发发送和接收数据。欢迎指出不足之处进行讨论。

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1.socket.BeginConnect();

　　其中的三个参数值EndPoint remoteEP,这个是用来指定连接的socket服务器的的地址

socket参数表
EndPoint remoteEP	这个的参数用来指定socket所连接的服务器的地址,一般包含的信息有,IP地址+端口号Point
AsyncCallback callback	这个参数指定一个异步的委托来请求socket服务器,并执行.
objcet state	用来指定异步请求委托的参数

public static void AsynConnect(string json, string ip, int port)
        {
            try
            {
                timeoutObject = new ManualResetEvent(false);
                sendstr = json;
                IPEndPoint ipe = new IPEndPoint(IPAddress.Parse(ip), port);
                client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);


                client.BeginConnect(ipe, new AsyncCallback(CallBackMethod), client);

                if (!timeoutObject.WaitOne(5000, false))
                {
                    client.Close();
                }
            }
            catch (Exception ex)
            {

            }
        }

        public static void CallBackMethod(IAsyncResult asyncresult)
        {
            try
            {
                client = asyncresult.AsyncState as Socket;
                if (client != null)
                {
                    client.EndConnect(asyncresult);
                    AsynSend(client, sendstr);
                    AsynRecive(client);

                }
            }
            catch (Exception e)
            {

            }
            finally
            {
                timeoutObject.Set();
            }
        }

       
        public static void AsynSend(Socket socket, string message)
        {
            if (socket == null || message == string.Empty) return;
            //编码  
            byte[] data = Encoding.UTF8.GetBytes(message);
            try
            {
                socket.BeginSend(data, 0, data.Length, SocketFlags.None, asyncResult =>
                {
                    int length = socket.EndSend(asyncResult);
                    // Console.WriteLine(string.Format("客户端发送消息:{0}", message));
                }, null);
            }
            catch (Exception ex)
            {
                
            }
        }

        static string receicestr = "";
      
        public static void AsynRecive(Socket socket)
        {
            byte[] data = new byte[1024];
            try
            {

              
                socket.BeginReceive(data, 0, data.Length, SocketFlags.None,
                asyncResult =>
                {
                    int length = socket.EndReceive(asyncResult);
                    receicestr += Encoding.UTF8.GetString(data);
                    AsynRecive(socket);
                }, null);
            }
            catch (Exception ex)
            {
               
            }
        }