C# UdpClient构造函数代码示例

//Creates an instance of the UdpClient class to listen on
// the default interface using a particular port.
try{
         UdpClient udpClient = new UdpClient(11000);
}  
catch (Exception e ) {
          Console.WriteLine(e.ToString());
  }

//Creates an instance of the UdpClient class using a local endpoint.
 IPAddress ipAddress = Dns.Resolve(Dns.GetHostName()).AddressList[0];
 IPEndPoint ipLocalEndPoint = new IPEndPoint(ipAddress, 11000);

try{
     UdpClient udpClient = new UdpClient(ipLocalEndPoint);
}
catch (Exception e ) {
           Console.WriteLine(e.ToString());
}

// Bind and listen on port 2000. This constructor creates a socket 
    // and binds it to the port on which to receive data. The family 
    // parameter specifies that this connection uses an IPv6 address.
    clientOriginator = new UdpClient(2000, AddressFamily.InterNetworkV6);

    // Join or create a multicast group. The multicast address ranges 
    // to use are specified in RFC#2375. You are free to use 
    // different addresses.
  
    // Transform the string address into the internal format.
    m_GrpAddr = IPAddress.Parse("FF01::1");

    // Display the multicast address used.
    Console.WriteLine("Multicast Address: [" + m_GrpAddr.ToString() + "]");

    // Exercise the use of the IPv6MulticastOption.
    Console.WriteLine("Instantiate IPv6MulticastOption(IPAddress)");

    // Instantiate IPv6MulticastOption using one of the 
    // overloaded constructors.
    IPv6MulticastOption ipv6MulticastOption = new IPv6MulticastOption(m_GrpAddr);

    // Store the IPAdress multicast options.
    IPAddress group =  ipv6MulticastOption.Group;
    long interfaceIndex = ipv6MulticastOption.InterfaceIndex;

    // Display IPv6MulticastOption properties.
    Console.WriteLine("IPv6MulticastOption.Group: [" + group  + "]");
    Console.WriteLine("IPv6MulticastOption.InterfaceIndex: [" + interfaceIndex + "]");



    // Instantiate IPv6MulticastOption using another 
    // overloaded constructor.
    IPv6MulticastOption ipv6MulticastOption2 = new IPv6MulticastOption(group, interfaceIndex);

    // Store the IPAdress multicast options.
    group =  ipv6MulticastOption2.Group;
    interfaceIndex = ipv6MulticastOption2.InterfaceIndex;

    // Display the IPv6MulticastOption2 properties.
    Console.WriteLine("IPv6MulticastOption.Group: [" + group  + "]");
    Console.WriteLine("IPv6MulticastOption.InterfaceIndex: [" + interfaceIndex + "]");

    // Join the specified multicast group using one of the 
    // JoinMulticastGroup overloaded methods.
    clientOriginator.JoinMulticastGroup((int)interfaceIndex, group);
  

    // Define the endpoint data port. Note that this port number
    // must match the ClientTarget UDP port number which is the
    // port on which the ClientTarget is receiving data.
    m_ClientTargetdest = new IPEndPoint(m_GrpAddr, 1000);

//Creates an instance of the UdpClient class with a remote host name and a port number.
try{
     UdpClient udpClient = new UdpClient("www.contoso.com",11000);
}
catch (Exception e ) {
           Console.WriteLine(e.ToString());
}