MSDN Documentation

AddressFamily Enumeration

Namespace: System.Net
Assembly: System.Net.Primitives.dll

Specifies the base address family used by the Socket class and other networking classes.

Syntax

public enum AddressFamily

Members

The AddressFamily enumeration contains the following members:

Remarks

This enumeration is used with the Socket constructor to specify the address family to be used for the socket. Common values include AddressFamily.InterNetwork for IPv4 and AddressFamily.InterNetworkV6 for IPv6.

Examples

The following C# code example demonstrates how to create an IPEndPoint using AddressFamily.InterNetwork:

using System;
using System.Net;
using System.Net.Sockets;

public class Example
{
    public static void Main(string[] args)
    {
        // Create an IPEndPoint for IPv4
        IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Loopback, 11000);
        Console.WriteLine($"Created IPEndPoint: {ipEndPoint.Address} on port {ipEndPoint.Port}");
        Console.WriteLine($"Address Family: {ipEndPoint.AddressFamily}");

        // Example of creating a Socket with IPv4
        using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
        {
            Console.WriteLine("Socket created for IPv4 TCP communication.");
        }
    }
}
                

Requirements

Namespace: System.Net

Assembly: System.Net.Primitives.dll

Framework: .NET Framework 1.1, .NET Framework 2.0, .NET Framework 3.0, .NET Framework 3.5, .NET Framework 4.0, .NET Framework 4.5, .NET Core 1.0, .NET Core 1.1, .NET Core 2.0, .NET Core 2.1, .NET Core 2.2, .NET Standard 1.3, .NET Standard 1.4, .NET Standard 1.6, .NET Standard 2.0, .NET 5, .NET 6, .NET 7, .NET 8