C#以太网Sockets客户端设计实现_开发_开发者

【1】客户端对象

using System.Net;// DNS_静态对象
using System.Net.Sockets;
 
// 字段位置
private Socket socket业务;  //对象既可以当服务器，又可以当客户端
TcpL开发者_开发教程istener tcpListener;   //服务器对象
TcpClient tcpClient;       //客户端对象

【2】初始化

Socket tcpClient客户端;

tcpClient客户端 = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

【3】连接

 #region 连接
 
        /// <summary>
        /// 建立连接
        /// </summary>
        /// <param name="ip">IP地址</param>
        /// <param name="port">端口号</param>
        public void Connect(string ip, string port)
        {
            try
            {
                //实例化Socket
                tcpClient = new Socket(AddriUuMBfqDgessFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
 
                //设置Socket属性
                tcpClient.SendTimeout = this.SendTimeOut;
 
                tcpClient.ReceiveTimeout = this.ReceiveTimeOut;
 
                //封装一个EndPoint对象
                IPEndPoint endPoint = new IPEndPoint(IPAddress.Parse(ip), int.Parse(port));
 
                //建立连接
                tcpClient.Connect(endPoint);
            }
            catch (Exception ex) { MessageBox.Show(ex.Message); }//显示错误
        }
 
        #endregion

【4】收发

  #region 读取并接受
 
        /// <summary>
        /// 发送并接受
        /// </summary>
        /// <param name="SendByte"></param>
        /// <returns></returns>
        public byte[] SendAndReceive(byte[] SendByte)
        {
            try
            {
                if (tcpClient.Available >= 1)//   丢弃字节
                {
                    #region 加载
                    byte[] buffer = new byte[tcpClient.Available];//准备加载
                    tcpClient.Receive(buffer, buffer.Length, SocketFlags.None);//开始加载
                    #endregion
                }
                #region 计时
                //====现在时间======================================
                str_发送后记时 = new StringBuilder(String.Format("{0,9}",
                    DateTime.Now.Second.ToString() + "s"
                    + DateTime.Now.Millisecond.ToString() + "ms:"));  //固定长度9 右对齐
                #endregion
                tcpClient.Send(SendByte);// 发送
               
                #region 委托
                if (Help_ModBus.Wt_set != null)
                {
                    Help_ModBus.Wt_set(SendByte, str_发送后记时.ToString());
                }
                #endregion
 
                return ReadMessage();
            }
            catch (Exception ex) { MessageBox.Show(ex.Message); }//显示错误
            finally
            {
                //InteractiveLock.Leave();
            }
            return null;
        }
 
 
        /// <summary>
        /// 读取缓冲区值
        /// </summary>
        /// <returns></returns>
        private byte[] ReadMessage()
        {
            DateTime startTime = DateTime.Now;//记录开始时间
            do
            {
                if (tcpClient.Available >= 5 )//   字节
                {
                    #region 计时
                    //====现在时间======================================
                    str_发送后记时 = new StringBuilder(String.Format("{0,9}",
                        DateTime.Now.Second.ToString() + "s"
                        + DateTime.Now.Millisecond.ToString() + "ms:"));  //固定长度9 右对齐
                    #endregion
                    #region 加载
                    byte[] buffer = new byte[tcpClient.Available];//准备加载
                    tcpClient.Receive(buffer, buffer.Length, SocketFlags.None);//开始加载
                    #endregion
                    #region 委托
                    if (Help_ModBus.Wt_get != null)//委托呼叫ui
                    {
                        Help_ModBus.Wt_get(buffer, str_发送后记时.ToString());// ui显示
                    }
                    #endregion
                    return buffer;
                }
                #region 超时跳出
                if ((DateTime.Now - startTime).TotalMilliseconds > ReceiveTimeOut+500)// 超时 1.5s
                {
                    break;// 已经超时
                }
                #endregion
 
            } while (true);
            return null; // 相当失败
 
 
 
            //Thread.Sleep(ReceiveTimeOut);// 延时15ms
            //int count = tcpClient.Available;  //  字节
            //if (count == 0)
            //{
            //    return null;
            //}
            //else
            //{
            //    byte[] buffer = new byte[count];
            //    tcpClient.Receive(buffer, count, SocketFlags.None);
            //    //byte[] buffer2 = Encoding.Default.GetBytes(str_发送后记时.ToString());
            //    byte[] buffer3 = { buffer2 , buffer };
            //    //return buffer2;
            //    #region 计时
            //    //====现在时间======================================
            //    str_发送后记时 = new StringBuilder(String.Format("{0,9}",
            //        DateTime.Now.Second.ToString() + "s"
            //        + DateTime.Now.Millisecond.ToString() + "ms:"));  //固定长度9 右对齐
            //    #endregion
            //    if (Wt_get!=null)
            //    {
            //        Wt_get(buffer, str_发送后记时.ToString());
            //    }
            //    return buffer;
            //}
 
            //==================================
            //int count = tcpClient.Available;
            //int cycletimer = 0;
            //while (count == 0)
            //{
            /python/    count = tcpClient.Available;
            //    cycletimer++;
            //    Thread.Sleep(20);
            //    if (cycletimer > MaxCycleTimer)
         php   //    {
            /http://www.devze.com/        break;
            //    }
            //}
            //if (count == 0)
            //{
            //    return null;
            //}
            //else
            //{
            //    byte[] buffer = new byte[count];
            //    tcpClient.Receive(buffer, count, SocketFlags.None);
            //    return buffer;
            //}
        }
        #endregion

【5】断开

 #region 断开
        /// <summary>
        /// 断开连接
        /// </summary>
        public void DisConnect()
        {
            if (tcpClient != null)
            {
                tcpClient.Close();
            }
        }
 
        #endregion

参数参考：

C#以太网编程Sockets服务器设计

到此这篇关于C#以太网Sockets客户端设计实现的文章就介绍到这了,更多相关C#以太网Sockets客户端内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们！