System.Net.Sockets.Socket.PostOneBeginConnect C# (CSharp) Method

        private static object PostOneBeginConnect(MultipleAddressConnectAsyncResult context)
        {
            IPAddress currentAddressSnapshot = context._addresses[context._index];

            if (!context._socket.CanTryAddressFamily(currentAddressSnapshot.AddressFamily))
            {
                return context._lastException != null ? context._lastException : new ArgumentException(SR.net_invalidAddressList, nameof(context));
            }

            try
            {
                EndPoint endPoint = new IPEndPoint(currentAddressSnapshot, context._port);

                // Do the necessary security demand.
                context._socket.CheckCacheRemote(ref endPoint, true);

                Socket connectSocket = context._socket;
                if (!SocketPal.SupportsMultipleConnectAttempts && !context._isUserConnectAttempt)
                {
                    context._lastAttemptSocket = new Socket(context._socket._addressFamily, context._socket._socketType, context._socket._protocolType);
                    if (context._socket.IsDualMode)
                    {
                        context._lastAttemptSocket.DualMode = true;
                    }

                    connectSocket = context._lastAttemptSocket;
                }

                IAsyncResult connectResult = connectSocket.UnsafeBeginConnect(endPoint, CachedMultipleAddressConnectCallback, context);
                if (connectResult.CompletedSynchronously)
                {
                    return connectResult;
                }
            }
            catch (Exception exception)
            {
                if (exception is OutOfMemoryException)
                {
                    throw;
                }

                return exception;
            }

            return null;
        }