コード例 #1
0
            /// <summary>
            /// send message to others
            /// </summary>
            /// <param name="destinationIP">the destination ip ,e.g.,192.168.1.1</param>
            /// <param name="msg">message you want to send</param>
            public static void SendMessage(string destinationIP, string msg)
            {
                System.Net.Sockets.TcpClient     tcpClient = null;
                System.Net.Sockets.NetworkStream netStream = null;
                byte[] buffer = System.Text.Encoding.UTF8.GetBytes(msg);
                var    destIP = System.Net.IPAddress.Parse(destinationIP);
                var    myIP   = Communication.GetLocalIP();
                //var myIP = "192.10.110.54";
                var epDest = new System.Net.IPEndPoint(destIP, 1124);

                Random ro       = new Random();
                int    up       = 1150;
                int    down     = 1123;
                var    sendport = 1123;

                while (!FunctionUtils.checkPort(sendport.ToString()))//检查端口占用
                {
                    sendport = ro.Next(down, up);
                }
                var dpLocal = new System.Net.IPEndPoint(myIP, sendport);

                tcpClient = new System.Net.Sockets.TcpClient(dpLocal);
                tcpClient.Connect(epDest);

                netStream = tcpClient.GetStream();
                if (netStream.CanWrite)
                {
                    netStream.Write(buffer, 0, buffer.Length);
                }
                tcpClient.GetStream().Close();
                tcpClient.Client.Close();
                tcpClient.Close();
                // tcpClient.GetStream().Close();
                // tcpClient.Client.Disconnect(false);
                //tcpClient.Close();
            }