public void ToString_UseDifferentRanges_AllSerializedCorrectly()
{
var range = new RangeHeaderValue();
range.Unit = "myunit";
range.Ranges.Add(new RangeItemHeaderValue(1, 3));
Assert.Equal("myunit=1-3", range.ToString());
range.Ranges.Add(new RangeItemHeaderValue(5, null));
range.Ranges.Add(new RangeItemHeaderValue(null, 17));
Assert.Equal("myunit=1-3, 5-, -17", range.ToString());
}
public void ParseRange_ReturnsSingleRangeWhenInputValid()
{
// Arrange
var httpContext = new DefaultHttpContext();
var range = new RangeHeaderValue(1, 2);
httpContext.Request.Headers[HeaderNames.Range] = range.ToString();
// Act
var(isRangeRequest, parsedRange) = RangeHelper.ParseRange(httpContext, httpContext.Request.GetTypedHeaders(), 4, NullLogger.Instance);
// Assert
Assert.True(isRangeRequest);
Assert.Equal(1, parsedRange.From);
Assert.Equal(2, parsedRange.To);
}
/// <summary>
/// <see cref="HttpContent"/> implementation which provides a byte range view over a stream used to generate HTTP
/// 206 (Partial Content) byte range responses. If none of the requested ranges overlap with the current extend
/// of the selected resource represented by the <paramref name="content"/> parameter then an
/// <see cref="InvalidByteRangeException"/> is thrown indicating the valid Content-Range of the content.
/// </summary>
/// <param name="content">The stream over which to generate a byte range view.</param>
/// <param name="range">The range or ranges, typically obtained from the Range HTTP request header field.</param>
/// <param name="mediaType">The media type of the content stream.</param>
/// <param name="bufferSize">The buffer size used when copying the content stream.</param>
public ByteRangeStreamContent(Stream content, RangeHeaderValue range, MediaTypeHeaderValue mediaType, int bufferSize)
{
if (content == null)
{
throw Error.ArgumentNull("content");
}
if (!content.CanSeek)
{
throw Error.Argument("content", Properties.Resources.ByteRangeStreamNotSeekable, typeof(ByteRangeStreamContent).Name);
}
if (range == null)
{
throw Error.ArgumentNull("range");
}
if (mediaType == null)
{
throw Error.ArgumentNull("mediaType");
}
if (bufferSize < MinBufferSize)
{
throw Error.ArgumentMustBeGreaterThanOrEqualTo("bufferSize", bufferSize, MinBufferSize);
}
if (!range.Unit.Equals(SupportedRangeUnit, StringComparison.OrdinalIgnoreCase))
{
throw Error.Argument("range", Properties.Resources.ByteRangeStreamContentNotBytesRange, range.Unit, SupportedRangeUnit);
}
try
{
// If we have more than one range then we use a multipart/byteranges content type as wrapper.
// Otherwise we use a non-multipart response.
if (range.Ranges.Count > 1)
{
// Create Multipart content and copy headers to this content
MultipartContent rangeContent = new MultipartContent(ByteRangesContentSubtype);
_byteRangeContent = rangeContent;
foreach (RangeItemHeaderValue rangeValue in range.Ranges)
{
try
{
ByteRangeStream rangeStream = new ByteRangeStream(content, rangeValue);
HttpContent rangeBodyPart = new StreamContent(rangeStream, bufferSize);
rangeBodyPart.Headers.ContentType = mediaType;
rangeBodyPart.Headers.ContentRange = rangeStream.ContentRange;
rangeContent.Add(rangeBodyPart);
}
catch (ArgumentOutOfRangeException)
{
// We ignore range errors until we check that we have at least one valid range
}
}
// If no overlapping ranges were found then stop
if (!rangeContent.Any())
{
ContentRangeHeaderValue actualContentRange = new ContentRangeHeaderValue(content.Length);
string msg = Error.Format(Properties.Resources.ByteRangeStreamNoneOverlap, range.ToString());
throw new InvalidByteRangeException(actualContentRange, msg);
}
}
else if (range.Ranges.Count == 1)
{
try
{
ByteRangeStream rangeStream = new ByteRangeStream(content, range.Ranges.First());
_byteRangeContent = new StreamContent(rangeStream, bufferSize);
_byteRangeContent.Headers.ContentType = mediaType;
_byteRangeContent.Headers.ContentRange = rangeStream.ContentRange;
}
catch (ArgumentOutOfRangeException)
{
ContentRangeHeaderValue actualContentRange = new ContentRangeHeaderValue(content.Length);
string msg = Error.Format(Properties.Resources.ByteRangeStreamNoOverlap, range.ToString());
throw new InvalidByteRangeException(actualContentRange, msg);
}
}
else
{
throw Error.Argument("range", Properties.Resources.ByteRangeStreamContentNoRanges);
}
// Copy headers from byte range content so that we get the right content type etc.
_byteRangeContent.Headers.CopyTo(Headers);
_content = content;
_start = content.Position;
}
catch
{
if (_byteRangeContent != null)
{
_byteRangeContent.Dispose();
}
throw;
}
}
