Windows Phone 7 下 Socket(TCP) 與 PC 通訊

Windows Phone 7 下 Socket(TCP) 與 PC 通訊，使用 WP7 模擬器與 PC 上的 Simple TCP 服務進行通訊。

TCP 用戶端主要實現 Socket 串連的建立、資料的發送與接收和關閉已經建立的 Socket。

using System;using System.Net;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;using System.Windows.Ink;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Animation;using System.Windows.Shapes;// 手動增加的using System.Net.Sockets;using System.Threading;using System.Text;namespace SocketClientTest{    public class SocketClient    {        Socket socket = null;        // 當一個非同步作業完成時, 用於通知的事件對象        static ManualResetEvent socketDone = new ManualResetEvent(false);        // 非同步作業超過時間定義. 如果在此時間內未接收到回應, 則放棄此操作.        const int TIMEOUT_MILLISECONDS = 5000;        // 最大接收緩衝        const int MAX_BUFFER_SIZE = 2048;        // Socket 串連到指定連接埠的伺服器        // hostName 伺服器名稱        // portNumber 串連連接埠        // 傳回值: 串連結果返回的字串        public string Connect(string hostName, int portNumber)        {            string result = string.Empty;            // 建立 DnsEndPoint. 伺服器的連接埠傳入此方法            DnsEndPoint hostEntry = new DnsEndPoint(hostName, portNumber);            socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);            // 建立一個 SocketAsyncEventArgs 對象用於串連請求            SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();            socketEventArg.RemoteEndPoint = hostEntry;            // Inline event handler for the Completed event.            // Note: This event handler was implemented inline in order to make this method self-contained.            socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(delegate(object s, SocketAsyncEventArgs e)                    {                        result = e.SocketError.ToString();                        // 標識請求已經完成, 不阻塞 UI 線程                        socketDone.Set();                    }                );            socketDone.Reset();            socket.ConnectAsync(socketEventArg);            socketDone.WaitOne(TIMEOUT_MILLISECONDS);            return result;        }        public string Send(string data)        {            string response = "Operation Timeout";            if (socket != null)            {                // 建立 SocketAsyncEventArgs 對象、並設定對象屬性                SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();                socketEventArg.RemoteEndPoint = socket.RemoteEndPoint;                socketEventArg.UserToken = null;                socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(delegate(object s, SocketAsyncEventArgs e)                        {                            response = e.SocketError.ToString();                            socketDone.Set();                        }                    );                // 將需要發送的資料送入發送緩衝區                byte[] payload = Encoding.UTF8.GetBytes(data);                socketEventArg.SetBuffer(payload, 0, payload.Length);                socketDone.Reset();                socket.SendAsync(socketEventArg);                socketDone.WaitOne(TIMEOUT_MILLISECONDS);            }            else            {                response = "Socket is not initialized";            }            return response;        }        public string Receive()        {            string response = "Operation Timeout";            if (socket != null)            {                SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();                socketEventArg.RemoteEndPoint = socket.RemoteEndPoint;                socketEventArg.SetBuffer(new Byte[MAX_BUFFER_SIZE], 0, MAX_BUFFER_SIZE);                socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(delegate(object s, SocketAsyncEventArgs e)                        {                            if (e.SocketError == SocketError.Success)                            {                                // 從接收緩衝區得到資料                                response = Encoding.UTF8.GetString(e.Buffer, e.Offset, e.BytesTransferred);                                response = response.Trim('\0');                            }                            else                            {                                response = e.SocketError.ToString();                            }                            socketDone.Set();                        }                    );                socketDone.Reset();                socket.ReceiveAsync(socketEventArg);                socketDone.WaitOne(TIMEOUT_MILLISECONDS);            }            else            {                response = "Socket is not initialized";            }            return response;        }        /// <summary>        /// Closes the Socket connection and releases all associated resources        /// </summary>        public void Close()        {            if (socket != null)            {                socket.Close();            }        }    }}

對 TCP 用戶端的使用如下：

using System;using System.Collections.Generic;using System.Linq;using System.Net;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Animation;using System.Windows.Shapes;using Microsoft.Phone.Controls;/* * 可以運行在 Windows Phone 7 模擬器上與 PC 進行 Socket 通訊。從 Simple TCP 服務擷取相應的回應。*/namespace SocketClientTest{    public partial class MainPage : PhoneApplicationPage    {        const int ECHO_PORT = 7;  // 回應連接埠: 配合 PC 系統的 Simple TCP 服務使用，回應接收到的字串        const int QOTD_PORT = 17; // 當日語錄連接埠:  配合 PC 系統的 Simple TCP 服務使用        // 建構函式        public MainPage()        {            InitializeComponent();            txtRemoteHost.Text = "yonghang-pc";       // 電腦名稱：可以從 案頭->計算名->屬性中查看到            txtInput.Text = "Test socket 測試";       // 發送的字串        }        private void btnEcho_Click(object sender, RoutedEventArgs e)        {            // 清空 log             ClearLog();            // 確認輸入是否有效            if (ValidateRemoteHostInput() && ValidateEditEchoInput())            {                // 初始化 SocketClient 執行個體                SocketClient client = new SocketClient();                // 開始串連 Echo Server                Log(String.Format("Connecting to server '{0}' over port {1} (echo) ...", txtRemoteHost.Text, ECHO_PORT), true);                string result = client.Connect(txtRemoteHost.Text, ECHO_PORT);                Log(result, false);                // 發送字串到 Echo Server                Log(String.Format("Sending '{0}' to server ...", txtInput.Text), true);                result = client.Send(txtInput.Text);                Log(result, false);                // 接收來自 Echo Server 的回應                Log("Requesting Receive ...", true);                result = client.Receive();                Log(result, false);                // 關閉 Socket 串連                client.Close();            }        }        // 擷取當日語錄        private void btnGetQuote_Click(object sender, RoutedEventArgs e)        {            ClearLog();            if (ValidateRemoteHostInput())            {                SocketClient client = new SocketClient();                Log(String.Format("Connecting to server '{0}' over port {1} (Quote of the Day) ...", txtRemoteHost.Text, QOTD_PORT), true);                string result = client.Connect(txtRemoteHost.Text, QOTD_PORT);                Log(result, false);                Log("Requesting Receive ...", true);                result = client.Receive();                Log(result, false);                client.Close();            }        }        // 判斷是否有輸入        private bool ValidateEditEchoInput()        {            if (String.IsNullOrWhiteSpace(txtInput.Text))            {                MessageBox.Show("Please enter string to send.");                return false;            }            return true;        }        // 判斷是否有輸入        private bool ValidateRemoteHostInput()        {            if (String.IsNullOrWhiteSpace(txtRemoteHost.Text))            {                MessageBox.Show("Please enter host name!");                return false;            }            return true;        }       // 在 TextBox 中輸出測試資訊        private void Log(string message, bool isOutgoing)        {            string direction = (isOutgoing) ? ">> " : "<< ";            txtOutput.Text += Environment.NewLine + direction + message;        }        // 清空測試資訊        private void ClearLog()        {            txtOutput.Text = String.Empty;        }    }}