TcpListener.LocalEndpoint Property

Definition

Namespace:

System.Net.Sockets

Assemblies:

netstandard.dll, System.Net.Sockets.dll

Source:

TCPListener.cs

Gets the underlying EndPoint of the current TcpListener.

C#

public System.Net.EndPoint LocalEndpoint { get; }

Property Value

EndPoint

The EndPoint to which the Socket is bound.

Examples

The following code example displays the local IP address and port number on which the TcpListener is listening for incoming connection requests.

C#

const int portNumber = 13;

try
{
    // Use the Pending method to poll the underlying socket instance for client connection requests.
    IPAddress ipAddress = Dns.Resolve("localhost").AddressList[0];
    TcpListener tcpListener = new TcpListener(ipAddress, portNumber);
    tcpListener.Start();

    if (!tcpListener.Pending())
    {
        Console.WriteLine("Sorry, no connection requests have arrived");
    }
    else
    {
        //Accept the pending client connection and return a TcpClient object initialized for communication.
        TcpClient tcpClient = tcpListener.AcceptTcpClient();
        // Using the RemoteEndPoint property.
        Console.WriteLine("I am listening for connections on " +
            IPAddress.Parse(((IPEndPoint)tcpListener.LocalEndpoint).Address.ToString()) +
            "on port number " + ((IPEndPoint)tcpListener.LocalEndpoint).Port.ToString());

        //Close the tcpListener and tcpClient instances
        tcpClient.Close();
    }

    tcpListener.Stop();
}
catch (Exception e)
{
    Console.WriteLine(e.ToString());
}

Remarks

You can use the LocalEndpoint property to identify the local network interface and port number being used to listen for incoming client connection requests, after a socket connection has been made. You must first cast this EndPoint to an IPEndPoint. You can then call the IPEndPoint.Address property to retrieve the local IP address, and the IPEndPoint.Port property to retrieve the local port number.

Applies to

See also

• Listen(Int32)
• EndPoint