public void ViaSocketWriter()
{
var ranges = new RangeCollection();
var fileStream = new FileStream(@"C:\Users\jgauffin\Downloads\AspNetMVC3ToolsUpdateSetup.exe", FileMode.Open,
FileAccess.Read, FileShare.ReadWrite);
ranges.Parse("bytes=0-50000", (int)fileStream.Length);
var stream = new ByteRangeStream(ranges, fileStream);
var job = new StreamSocketWriterJob(stream);
var buffer = new byte[65535];
var args = Substitute.For <SocketAsyncEventArgs>();
args.UserToken.Returns(buffer);
job.Write(args);
while (true)
{
if (job.WriteCompleted(5000))
{
job.Dispose();
break;
}
job.Write(args);
}
}
public void ReadOneRangePartially()
{
var stream = CreateTextStream();
var ranges = new RangeCollection();
ranges.Parse("bytes=0-99", (int)stream.Length);
byte[] target = new byte[100];
var stream2 = new ByteRangeStream(ranges, stream);
stream2.Read(target, 0, 50);
stream2.Read(target, 50, 50);
Assert.Equal(GetString().Substring(0, 100), Encoding.ASCII.GetString(target, 0, 100));
}
/// <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;
}
}