System.Net.ConnectStream.EndWrite C# (CSharp) Method

        public override void EndWrite(IAsyncResult asyncResult) {
#if DEBUG
            using (GlobalLog.SetThreadKind(ThreadKinds.User)) {
#endif
            GlobalLog.Enter("ConnectStream#" + ValidationHelper.HashString(this) + "::EndWrite");
            if(Logging.On)Logging.Enter(Logging.Web, this, "EndWrite", "");
            //
            // parameter validation
            //
            if (asyncResult==null) {
                throw new ArgumentNullException("asyncResult");
            }
            LazyAsyncResult castedAsyncResult = asyncResult as LazyAsyncResult;

            if (castedAsyncResult==null || castedAsyncResult.AsyncObject!=this) {
                throw new ArgumentException(SR.GetString(SR.net_io_invalidasyncresult), "asyncResult");
            }
            if (castedAsyncResult.EndCalled) {
                throw new InvalidOperationException(SR.GetString(SR.net_io_invalidendcall, "EndWrite"));
            }

            castedAsyncResult.EndCalled = true;

            //
            // wait & then check for errors
            //

            object returnValue = castedAsyncResult.InternalWaitForCompletion();

            if (ErrorInStream) {
                GlobalLog.LeaveException("ConnectStream#" + ValidationHelper.HashString(this) + "::EndWrite", m_ErrorException);
                throw m_ErrorException;
            }

            Exception exception = returnValue as Exception;
            if (exception!=null) {

                if (exception is IOException && m_Request.Aborted) {
                    GlobalLog.Print("ConnectStream#" + ValidationHelper.HashString(this) + "::InternalWrite() throwing");
                    throw new WebException(
                        NetRes.GetWebStatusString("net_requestaborted", WebExceptionStatus.RequestCanceled),
                        WebExceptionStatus.RequestCanceled);
                }

                IOError(exception);
                GlobalLog.LeaveException("ConnectStream#" + ValidationHelper.HashString(this) + "::EndWrite", exception);
                throw exception;
            }

            GlobalLog.Leave("ConnectStream#" + ValidationHelper.HashString(this) + "::EndWrite");
            if(Logging.On)Logging.Exit(Logging.Web, this, "EndWrite", "");
#if DEBUG
            }
#endif
        }