Socket.GetOptions Method

Namespace: System.Net.Sockets
Declaring Type: Socket
public object GetOptions()

Retrieves the current values of all socket options for the Socket.

Parameters

This method takes no parameters.

Return Value

An object that represents the current values of all socket options for the Socket. The exact type of the returned object depends on the underlying operating system and the specific options set.

Remarks

The GetOptions method is used to retrieve the current settings of various socket options. These options control the behavior of the socket, such as whether broadcast messages are enabled, the size of send and receive buffers, and the keep-alive settings.

The values returned by this method are typically stored in an object that can be cast to a specific option type. For instance, if you have set the SocketOptionName.Broadcast option, you might expect to retrieve a boolean value.

The specific options available and their corresponding return types can vary. Refer to the operating system's socket documentation or the SocketOptionName enumeration for a comprehensive list of common socket options.

It is important to note that the return type of the GetOptions method is object. You will need to cast the returned value to the appropriate type based on the option you are interested in.

Examples

Checking if Broadcast is enabled


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

public class SocketOptionsExample
{
    public static void Main(string[] args)
    {
        try
        {
            // Create a new Socket
            using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp))
            {
                // Set the Broadcast option to true
                socket.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast, true);

                // Retrieve all socket options
                object options = socket.GetOptions();

                // To check a specific option like Broadcast, you might need to retrieve it individually
                // or parse the returned object if it's a collection.
                // For simplicity, let's retrieve Broadcast individually to demonstrate.
                bool isBroadcastEnabled = (bool)socket.GetSocketOption(SocketOptionLevel.Socket, SocketOptionName.Broadcast);

                Console.WriteLine($"Broadcast is enabled: {isBroadcastEnabled}");

                // You can retrieve other options similarly.
                // int receiveBufferSize = (int)socket.GetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReceiveBuffer);
                // Console.WriteLine($"Receive buffer size: {receiveBufferSize}");
            }
        }
        catch (SocketException e)
        {
            Console.WriteLine($"SocketException: {e.Message}");
        }
        catch (Exception e)
        {
            Console.WriteLine($"Exception: {e.Message}");
        }
    }
}

See Also