Csharp/C Sharp by API/System.Net.Sockets/Socket

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new Socket( AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp )

<source lang="csharp">

using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass { 

 const int echoPort = 7;
 [STAThread]
 static void Main( string[] args )
 {
   Socket s = new Socket( AddressFamily.InterNetwork, 
     SocketType.Stream, 
     ProtocolType.Tcp );
   s.Connect( new IPEndPoint( IPAddress.Loopback, echoPort ) );
   UTF8Encoding enc = new UTF8Encoding();
   s.Send( enc.GetBytes( "test message" ) );
   Byte[] buff = new Byte[ 1024 ];
   s.Receive( buff );
   System.Console.WriteLine( enc.GetString( buff ) );
 }

} 


 </source>


Socket.AddressFamily

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; class MainClass { 

  public static void Main()
  {
     IPAddress ia = IPAddress.Parse("127.0.0.1");
     IPEndPoint ie = new IPEndPoint(ia, 8000);
     Socket test = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     Console.WriteLine("AddressFamily: {0}",test.AddressFamily);
     Console.WriteLine("SocketType: {0}",test.SocketType);
     Console.WriteLine("ProtocolType: {0}",test.ProtocolType);

     test.Close();
  }

} 


 </source>


Socket.Bind(IPEndPoint ip)

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass { 

  public static void Main()
  {
     IPEndPoint ip = new IPEndPoint(IPAddress.Any,9999);
     Socket socket = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
     socket.Bind(ip);
     socket.Listen(10);
     Console.WriteLine("Waiting for a client...");
     Socket client = socket.Accept();
     IPEndPoint clientep =(IPEndPoint)client.RemoteEndPoint;
     Console.WriteLine("Connected with {0} at port {1}",clientep.Address, clientep.Port);
     
     string welcome = "Welcome";
     byte[] data = new byte[1024];
     data = Encoding.ASCII.GetBytes(welcome);
     client.Send(data, data.Length,SocketFlags.None);
     Console.WriteLine("Disconnected from {0}",clientep.Address);
     client.Close();
     socket.Close();
  }

} 


 </source>


Socket.Blocking

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; class MainClass { 

  public static void Main()
  {
     IPAddress ia = IPAddress.Parse("127.0.0.1");
     IPEndPoint ie = new IPEndPoint(ia, 8000);
     Socket test = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     Console.WriteLine("Blocking: {0}", test.Blocking);
     test.Blocking = false;
     Console.WriteLine("new Blocking: {0}",test.Blocking);
     Console.WriteLine("Connected: {0}", test.Connected);
     test.Close();
  }

} 


 </source>


Socket.Connected

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; class MainClass { 

  public static void Main()
  {
     IPAddress ia = IPAddress.Parse("127.0.0.1");
     IPEndPoint ie = new IPEndPoint(ia, 8000);
     Socket test = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     Console.WriteLine("Blocking: {0}", test.Blocking);
     test.Blocking = false;
     Console.WriteLine("new Blocking: {0}",test.Blocking);
     Console.WriteLine("Connected: {0}", test.Connected);
     test.Close();
  }

} 


 </source>


Socket.Connect(IPEndPoint ip)

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass { 

  public static void Main()
  {
     IPAddress host = IPAddress.Parse("192.168.1.1");
     IPEndPoint hostep = new IPEndPoint(host, 8000);
     Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     try
     {
        sock.Connect(hostep);
     } catch (SocketException e) {
        Console.WriteLine("Problem connecting to host");
        Console.WriteLine(e.ToString());
        sock.Close();
        return;
     }
     sock.Close();
  }

} 


 </source>


Socket.Listen

<source lang="csharp"> using System; using System.IO; using System.Net; using System.Net.Sockets; using System.Text; public class StreamTcpSrvr { 

  public static void Main()
  {
     string data;
     IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
     Socket newsock = new Socket(AddressFamily.InterNetwork,
                     SocketType.Stream, ProtocolType.Tcp);
     newsock.Bind(ipep);
     newsock.Listen(10);
     Socket client = newsock.Accept();
     IPEndPoint newclient = (IPEndPoint)client.RemoteEndPoint;
     Console.WriteLine("Connected with {0} at port {1}",
                     newclient.Address, newclient.Port);
     NetworkStream ns = new NetworkStream(client);
     StreamReader sr = new StreamReader(ns);
     StreamWriter sw = new StreamWriter(ns);
     string welcome = "Welcome to my test server";
     sw.WriteLine(welcome);
     sw.Flush();
     while(true)
     {
        try
        {
           data = sr.ReadLine();
        } catch (IOException)
        {
           break;
        }
      
        Console.WriteLine(data);
        sw.WriteLine(data);
        sw.Flush();
     }
     Console.WriteLine("Disconnected from {0}", newclient.Address);
     sw.Close();
     sr.Close();
     ns.Close();
  }

} 

 </source>


Socket.LocalEndPoint

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; class MainClass { 

  public static void Main()
  {
     IPAddress ia = IPAddress.Parse("127.0.0.1");
     IPEndPoint ie = new IPEndPoint(ia, 8000);
     Socket test = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     Console.WriteLine("Blocking: {0}", test.Blocking);
     test.Bind(ie);
     IPEndPoint iep = (IPEndPoint)test.LocalEndPoint;
     Console.WriteLine("Local EndPoint: {0}",iep.ToString());
     test.Close();
  }

} 


 </source>


Socket.ProtocolType

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; class MainClass { 

  public static void Main()
  {
     IPAddress ia = IPAddress.Parse("127.0.0.1");
     IPEndPoint ie = new IPEndPoint(ia, 8000);
     Socket test = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     Console.WriteLine("AddressFamily: {0}",test.AddressFamily);
     Console.WriteLine("SocketType: {0}",test.SocketType);
     Console.WriteLine("ProtocolType: {0}",test.ProtocolType);

     test.Close();
  }

} 


 </source>


Socket.Receive(byte[] data)

<source lang="csharp">

using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass { 

  public static void Main()
  {
     IPEndPoint ip = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 9999);
     Socket server = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
     try
     {
        server.Connect(ip);
     } catch (SocketException e){
        Console.WriteLine("Unable to connect to server.");
        return;
     }
     byte[] data = new byte[1024];
     int receivedDataLength = server.Receive(data);
     string stringData = Encoding.ASCII.GetString(data, 0, receivedDataLength);
     Console.WriteLine(stringData);
     server.Shutdown(SocketShutdown.Both);
     server.Close();
  }

} 


 </source>


Socket.ReceiveFrom

<source lang="csharp"> /* C# Network Programming by Richard Blum Publisher: Sybex ISBN: 0782141765

  • /

using System; using System.Net; using System.Net.Sockets; using System.Text; public class SimpleUdpClient { 

  public static void Main()
  {
     byte[] data = new byte[1024];
     string input, stringData;
     IPEndPoint ipep = new IPEndPoint(
                     IPAddress.Parse("127.0.0.1"), 9050);
     Socket server = new Socket(AddressFamily.InterNetwork,
                    SocketType.Dgram, ProtocolType.Udp);

     string welcome = "Hello, are you there?";
     data = Encoding.ASCII.GetBytes(welcome);
     server.SendTo(data, data.Length, SocketFlags.None, ipep);
     IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
     EndPoint Remote = (EndPoint)sender;
     data = new byte[1024];
     int recv = server.ReceiveFrom(data, ref Remote);
     Console.WriteLine("Message received from {0}:", Remote.ToString());
     Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
     while(true)
     {
        input = Console.ReadLine();
        if (input == "exit")
           break;
        server.SendTo(Encoding.ASCII.GetBytes(input), Remote);
        data = new byte[1024];
        recv = server.ReceiveFrom(data, ref Remote);
        stringData = Encoding.ASCII.GetString(data, 0, recv);
        Console.WriteLine(stringData);
     }
     Console.WriteLine("Stopping client");
     server.Close();
  }

} 

 </source>


Socket.Send(data, data.Length, SocketFlags.None)

<source lang="csharp"> /* C# Network Programming by Richard Blum Publisher: Sybex ISBN: 0782141765

  • /

using System; using System.Collections; using System.Net; using System.Net.Sockets; using System.Text; public class SelectTcpClient { 

  public static void Main()
  {
     Socket sock = new Socket(AddressFamily.InterNetwork,
                       SocketType.Stream, ProtocolType.Tcp);
     IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 9050);
     byte[] data = new byte[1024];
     string stringData;
     int recv;
     sock.Connect(iep);
     Console.WriteLine("Connected to server");
     recv = sock.Receive(data);
     stringData = Encoding.ASCII.GetString(data, 0, recv);
     Console.WriteLine("Received: {0}", stringData);

     while(true)
     {
        stringData = Console.ReadLine();
        if (stringData == "exit")
           break;
        data = Encoding.ASCII.GetBytes(stringData);
        sock.Send(data, data.Length, SocketFlags.None);
        data = new byte[1024];
        recv = sock.Receive(data);
        stringData = Encoding.ASCII.GetString(data, 0, recv);
        Console.WriteLine("Received: {0}", stringData);
     }
     sock.Close();
  }

} 

 </source>


Socket.Send(String stringValue)

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; using System.Text; class MainClass { 

  public static void Main()
  {
     IPAddress host = IPAddress.Parse("192.168.1.1");
     IPEndPoint hostep = new IPEndPoint(host, 8000);
     Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     try
     {
        sock.Connect(hostep);
     } catch (SocketException e) {
        Console.WriteLine("Problem connecting to host");
        Console.WriteLine(e.ToString());
        sock.Close();
        return;
     }
     try
     {
        sock.Send(Encoding.ASCII.GetBytes("testing"));
     } catch (SocketException e) {
         Console.WriteLine("Problem sending data");
         Console.WriteLine( e.ToString());
         sock.Close();
         return;
     }
     sock.Close();
  }

} 


 </source>


Socket.sentTo

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; using System.Text; class MultiSend { 

  public static void Main()
  {
     Socket server = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
     IPEndPoint iep = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 9050);
     
     byte[] data = Encoding.ASCII.GetBytes("This is a test message");
     server.SendTo(data, iep);
     server.Close();
  }

} 


 </source>


Socket.SocketType

<source lang="csharp"> using System; using System.Net; using System.Net.Sockets; class MainClass { 

  public static void Main()
  {
     IPAddress ia = IPAddress.Parse("127.0.0.1");
     IPEndPoint ie = new IPEndPoint(ia, 8000);
     Socket test = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
     Console.WriteLine("AddressFamily: {0}",test.AddressFamily);
     Console.WriteLine("SocketType: {0}",test.SocketType);
     Console.WriteLine("ProtocolType: {0}",test.ProtocolType);

     test.Close();
  }

} 


 </source>
Источник — «http://www.nfex.ru/index.php?title=Csharp/C_Sharp_by_API/System.Net.Sockets/Socket&oldid=4700»