コード例 #1
0
        /// <summary>
        /// Straight copy from the reader to the writer
        /// </summary>
        public static async Task CopyToAsync(this IReadAsyncStream readStream, IWriteAsyncStream writeStream, CancellationToken ct)
        {
            // We have the double exception catching to avoid the using() from hiding the inner exception
            Exception inner = null;

            try
            {
                using (readStream)
                {
                    try
                    {
                        var buffer = new byte[BufferSize];
                        int read;
                        do
                        {
                            ct.ThrowIfCancellationRequested();
                            read = await readStream.ReadAsync(buffer, 0, buffer.Length, ct).ConfigureAwait(false);
                            if (read > 0)
                            {
                                ct.ThrowIfCancellationRequested();
                                await writeStream.WriteAsync(buffer, 0, read, ct).ConfigureAwait(false);
                            }
                        } while (read > 0);
                    }
                    catch (Exception e)
                    {
                        inner = e;
                        throw;
                    }
                }
            }
            catch (Exception)
            {
                if (inner != null)
                {
                    throw inner;
                }
                else throw;
            }
        }
コード例 #2
0
 public WriteWriteAsyncStream(IWriteAsyncStream stream, Func<Stream, Stream> writeStack)
 {
     _stream = stream;
     _ms = new MemoryStream();
     _watcher = new WriteWatcherStream(_ms, () => { });  // We do this mostly so that the ms is not disposed
     _stack = writeStack(_watcher);
 }