예제 #1
0
        public async Task <MultipartSection> ReadNextSectionAsync(CancellationToken cancellationToken = new CancellationToken())
        {
            // Drain the prior section.
            await _currentStream.ConsumeAsync(cancellationToken);

            // If we're at the end return null
            if (_currentStream.FinalBoundaryFound)
            {
                // There may be trailer data after the last boundary.
                await _stream.ConsumeAsync(HeadersLengthLimit, cancellationToken);

                return(null);
            }
            var headers = await ReadHeadersAsync(cancellationToken);

            _boundary.ExpectLeadingCrlf = true;
            _currentStream = new MultipartReaderStream(_stream, _boundary)
            {
                LengthLimit = BodyLengthLimit
            };
            long?baseStreamOffset = _stream.CanSeek ? (long?)_stream.Position : null;

            return(new MultipartSection()
            {
                Headers = headers, Body = _currentStream, BaseStreamOffset = baseStreamOffset
            });
        }
예제 #2
0
        public MultipartReader(string boundary, Stream stream, int bufferSize)
        {
            if (boundary == null)
            {
                throw new ArgumentNullException(nameof(boundary));
            }

            if (stream == null)
            {
                throw new ArgumentNullException(nameof(stream));
            }

            if (bufferSize < boundary.Length + 8) // Size of the boundary + leading and trailing CRLF + leading and trailing '--' markers.
            {
                throw new ArgumentOutOfRangeException(nameof(bufferSize), bufferSize, "Insufficient buffer space, the buffer must be larger than the boundary: " + boundary);
            }
            _stream   = new BufferedReadStream(stream, bufferSize);
            _boundary = new MultipartBoundary(boundary, false);
            // This stream will drain any preamble data and remove the first boundary marker.
            // TODO: HeadersLengthLimit can't be modified until after the constructor.
            _currentStream = new MultipartReaderStream(_stream, _boundary)
            {
                LengthLimit = HeadersLengthLimit
            };
        }