Socket通信实例

        /// <summary>
        /// 通过Socket与通信服务器通信
        /// </summary>
        /// <param name="GroupServerIPAddr">输入参数：通信服务器地址</param>
        /// <param name="GroupServerIPPort">输入参数：通信服务器端口</param>
        /// <param name="SendData">输入参数：注册服务器信息</param>
        /// <returns>返回：ReceiveDataFromSocket数据实体</returns>
        public static Model.ReceiveDataFromSocket CommunicateToCrossServer(string GroupServerIPAddr, int GroupServerIPPort, byte[] SendData)
        {
            IPHostEntry ipHostInfo = Dns.Resolve(GroupServerIPAddr);
            IPAddress ipAddress = ipHostInfo.AddressList[0];
            IPEndPoint remoteEP = new IPEndPoint(ipAddress, GroupServerIPPort);
            byte[] ReceiveData = new byte[0];
            int ReceiveDataLen=0;
            string errorStr = "";
            //创建一个基于TCP的Socket
            Socket client = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            try
            {
                //尝试连接
                client.Connect(remoteEP);
            }
            catch (Exception se)
            {
                errorStr = "连接错误" + se.Message;
                return null;
            }
            try
            {
                //向主机发送请求
                client.Send(SendData, SendData.Length, 0);
            }
            catch (Exception ce)
            {
                errorStr = "发送错误:" + ce.Message;
            }
            int bytes = 0;
            try
            {
                List<byte[]> tempList = new List<byte[]>();
                while (true)
                {
                    byte[] temp = new byte[1024];
                    //每次读取1024
                    bytes = client.Receive(temp, 1024, 0);
                    if (bytes <= 0)
                    {
                        if (ReceiveDataLen != 0)
                        {
                            ReceiveData = new byte[ReceiveDataLen];
                            int TempLen = 0;
                            //合并数组
                            for (int i = 0; i <= tempList.Count - 1; i++)
                            {
                                tempList[i].CopyTo(ReceiveData, TempLen);
                                TempLen = TempLen + tempList[i].Length;
                            }
                        }
                        break;
                    }
                    else
                    {
                        if (bytes == 1024)
                        {
                            tempList.Add(temp);
                        }
                        else
                        {
                            byte[] temp2 = new byte[bytes];
                            Array.Copy(temp, 0, temp2, 0, bytes);
                            tempList.Add(temp2);

                        }
                        ReceiveDataLen = bytes + ReceiveDataLen;
                    }
                }
            }
            catch (Exception ce)
            {
                errorStr = "接收错误" + ce.Message;
                //禁用Socket
                client.Shutdown(SocketShutdown.Both);
                //关闭Socket
                client.Close();
                return null;
            }
            Model.ReceiveDataFromSocket myReceiveData = new RailwayCross2011.Model.ReceiveDataFromSocket();
            myReceiveData.ReceiveData = ReceiveData;
            myReceiveData.ReceiveDataLen = ReceiveDataLen;
            myReceiveData.errorStr = errorStr;
            //禁用Socket
            client.Shutdown(SocketShutdown.Both);
            //关闭Socket
            client.Close();
            return myReceiveData;
        }

流程图说明：

从Socket接收的数据实体说明(由于需要通过WebService调用这个方法,所以一定要系列化)

    [Serializable]
    public class ReceiveDataFromSocket
    {
        /// <summary>
        /// 从Sokcet接收的数据
        /// </summary>
        public byte[] ReceiveData
        {
            get;
            set;
        }
        /// <summary>
        /// 数据长度
        /// </summary>
        public int ReceiveDataLen
        {
            get;
            set;
        }
        /// <summary>
        /// 出错信息
        /// </summary>
        public string errorStr
        {
            get;
            set;
        }
    }