public ChunkedStream(Stream innerStream)
{
_byteStreamReader = new ByteStreamReader(innerStream, 4096, false);
_disposed = false;
_chunkSize = -1;
_remaining = -1;
}
public async Task<HttpResponseMessage> ReceiveResponseAsync(Stream stream, HttpRequestMessage request)
{
ByteStreamReader reader = new ByteStreamReader(stream, BufferSize, false);
var response = await ReadResponseHeadAsync(reader, request);
if (!MethodsWithoutResponseBody.Contains(request.Method))
{
ReadResponseBody(reader, response);
}
return response;
}
private async Task<HttpResponseMessage> ReadResponseHeadAsync(ByteStreamReader reader, HttpRequestMessage request)
{
// initialize the response
var response = new HttpResponseMessage { RequestMessage = request };
// read the first line of the response
string line = await reader.ReadLineAsync();
string[] pieces = line.Split(new[] { ' ' }, 3);
if (pieces[0] != "HTTP/1.1")
{
throw new HttpRequestException("The HTTP version the response is not supported.");
}
response.StatusCode = (HttpStatusCode)int.Parse(pieces[1]);
response.ReasonPhrase = pieces[2];
// read the headers
response.Content = new ByteArrayContent(new byte[0]);
while ((line = await reader.ReadLineAsync()) != null && line != string.Empty)
{
pieces = line.Split(new[] { ":" }, 2, StringSplitOptions.None);
if (pieces[1].StartsWith(" "))
{
pieces[1] = pieces[1].Substring(1);
}
var headers = HttpHeaderCategories.IsContentHeader(pieces[0]) ? (HttpHeaders)response.Content.Headers : response.Headers;
headers.TryAddWithoutValidation(pieces[0], pieces[1]);
}
return response;
}
private void ReadResponseBody(ByteStreamReader reader, HttpResponseMessage response)
{
HttpContent content = null;
if (response.Headers.TransferEncodingChunked.GetValueOrDefault(false))
{
// read the body with chunked transfer encoding
var remainingStream = reader.GetRemainingStream();
var chunkedStream = new ChunkedStream(remainingStream);
content = new StreamContent(chunkedStream);
}
else if (response.Content.Headers.ContentLength.HasValue)
{
// read the body with a content-length
var remainingStream = reader.GetRemainingStream();
var limitedStream = new LimitedStream(remainingStream, response.Content.Headers.ContentLength.Value);
content = new StreamContent(limitedStream);
}
if (content != null)
{
// copy over the content headers
foreach (var header in response.Content.Headers)
{
content.Headers.TryAddWithoutValidation(header.Key, header.Value);
}
response.Content = content;
}
}
public void Setup(string[] lines)
{
Stream = GetStream(lines);
Reader = new ByteStreamReader(Stream, BufferSize, PreserveLineEndings);
}
