網絡編程(Socket)

這裏對網絡編程做下簡單的整理，填補下自己這方面的知識空白。如果想了解請參考張子陽的.Net之美.
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概念講述

• TCP:面向連接的傳輸協議（網絡協議的一種）
• 遠程主機： 跨進程訪問即為遠程訪問

• 套接字： 傳輸層與應用層的紐帶，可使應用層編程不用關心傳輸層

  服務器與客戶端鏈接

  服務端開啟監聽服務，客戶端鏈接服務端。新建兩個控制臺程序Server/Client。
  Server:

  static void Main(string[] args)
      {
          Console.WriteLine("Server is running ...");
          IPAddress ip = IPAddress.Parse("127.0.0.1");
          int port = 8500;
  
          TcpListener listener = new TcpListener(ip, port);
          listener.Start();
  
          Console.WriteLine("\n\n Enter \"Q\" exit.");
          ConsoleKey key;
          do
          {
              key = Console.ReadKey(true).Key;
          } while (key != ConsoleKey.Q);
      }
   
  

  Client:

  static void Main(string[] args)
      {
          Console.WriteLine("Client Running");
  
          TcpClient client = new TcpClient();
  
          IPAddress serverIp = IPAddress.Parse("127.0.0.1");
          int serverPort = 8500;
  
          try
          {
              client.Connect(serverIp, serverPort);
          }
          catch (Exception ex)
          {
              Console.WriteLine(ex.Message);
              return;
          }
  
          Console.WriteLine("Server Connected!{0} --> {1}", client.Client.LocalEndPoint, client.Client.RemoteEndPoint);
  
          Console.WriteLine("\n\n Enter \"Q\" exit.");
          ConsoleKey key;
          do
          {
              key = Console.ReadKey(true).Key;
          } while (key != ConsoleKey.Q);
      }
   
  

  ---

  命令行運行netstat -a查看端口連接狀態

  服務端獲取客戶端鏈接

  AcceptTcpClient()為阻塞方法，調用後線程等待客戶端鏈接
  Server:

      static void Main(string[] args)
      {
          Console.WriteLine("Server is running ...");
          IPAddress ip = IPAddress.Parse("127.0.0.1");
          int port = 8500;
  
          TcpListener listener = new TcpListener(ip, port);
          listener.Start();
          Console.WriteLine("Start Listening ...");
  
          //目的獲取多個客戶端信息
          while(true)
          {
              try
              {
                  //獲取一個連接，中斷方法(等待客戶端的鏈接)
                  TcpClient remoteClient = listener.AcceptTcpClient();
                  //打印鏈接到的客戶端信息
                  Console.WriteLine("Client Connected!{0}<-{1}", remoteClient.Client.LocalEndPoint, remoteClient.Client.RemoteEndPoint);
              }
              catch (Exception ex)
              {
                  Console.WriteLine("Error:" + ex.Message);
              }
          }
      }
   
  

  客戶端發送信息服務端接受

  Server:

  static void Main(string[] args)
      {
          int BufferSize = 8192;
  
          Console.WriteLine("Server is running ...");
          IPAddress ip = IPAddress.Parse("127.0.0.1");
          int port = 8500;
  
          TcpListener listener = new TcpListener(ip, port);
          listener.Start();
          Console.WriteLine("Start Listening ...");
  
          //目的獲取多個客戶端信息
          while(true)
          {
              try
              {
                  //獲取一個連接，中斷方法(等待客戶端的鏈接)
                  TcpClient remoteClient = listener.AcceptTcpClient();
                  //打印鏈接到的客戶端信息
                  Console.WriteLine("Client Connected!{0}<-{1}", remoteClient.Client.LocalEndPoint, remoteClient.Client.RemoteEndPoint);
  
                  //獲得流並寫入buffer中
                  NetworkStream streamToClient = remoteClient.GetStream();
                  byte[] buffer = new byte[BufferSize];
                  int bytesRead = streamToClient.Read(buffer, 0, buffer.Length);
                  Console.WriteLine("Reading data,{0}bytes",bytesRead);
  
                  //獲得請求的字符串
                  string msg = Encoding.Unicode.GetString(buffer, 0, bytesRead);
                  Console.WriteLine("Received:{0}",msg);
              }
              catch (Exception ex)
              {
                  Console.WriteLine("Error:" + ex.Message);
              }
          }
      }

  Client:

  static void Main(string[] args)
      {
          Console.WriteLine("Client Running");
  
          TcpClient client = new TcpClient();
  
          IPAddress serverIp = IPAddress.Parse("127.0.0.1");
          int serverPort = 8500;
  
          try
          {
              client.Connect(serverIp, serverPort);
          }
          catch (Exception ex)
          {
              Console.WriteLine(ex.Message);
              return;
          }
  
          Console.WriteLine("Server Connected!{0} --> {1}", client.Client.LocalEndPoint, client.Client.RemoteEndPoint);
  
          string msg = "\"Welcome To TraceFact.Net\"";
          NetworkStream streamToServer = client.GetStream();
  
          byte[] buffer = Encoding.Unicode.GetBytes(msg);
          streamToServer.Write(buffer, 0, buffer.Length);
          Console.WriteLine("Sent:{0}",msg);
          Console.WriteLine("\n\n Enter \"Q\" exit.");
          ConsoleKey key;
          do
          {
              key = Console.ReadKey(true).Key;
          } while (key != ConsoleKey.Q);
      }

.Net之美讀書筆記10(網絡編程一)