SocketExceptionFactory.cs

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using System.Net.Sockets;
 
namespace System.Net.Internals;
 
internal static class SocketExceptionFactory
{
    private sealed class ExtendedSocketException : SocketException
    {
        private readonly EndPoint _endPoint;
 
        public override string Message
        {
            get
            {
                if (_endPoint != null)
                {
                    return base.Message + " " + _endPoint.ToString();
                }
                return base.Message;
            }
        }
 
        public ExtendedSocketException(int errorCode, EndPoint endPoint)
            : base(errorCode)
        {
            _endPoint = endPoint;
        }
    }
 
    public static SocketException CreateSocketException(int socketError, EndPoint endPoint)
    {
        return new ExtendedSocketException(socketError, endPoint);
    }
}