private static async Task <HttpRequestMessage> ReadAsHttpRequestMessageAsyncCore(this HttpContent content,
string uriScheme, int bufferSize, int maxHeaderSize, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
Stream stream = await content.ReadAsStreamAsync();
HttpUnsortedRequest httpRequest = new HttpUnsortedRequest();
HttpRequestHeaderParser parser = new HttpRequestHeaderParser(httpRequest,
HttpRequestHeaderParser.DefaultMaxRequestLineSize, maxHeaderSize);
ParserState parseStatus;
byte[] buffer = new byte[bufferSize];
int bytesRead = 0;
int headerConsumed = 0;
while (true)
{
try
{
bytesRead = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken);
}
catch (Exception e)
{
throw new IOException(Properties.Resources.HttpMessageErrorReading, e);
}
try
{
parseStatus = parser.ParseBuffer(buffer, bytesRead, ref headerConsumed);
}
catch (Exception)
{
parseStatus = ParserState.Invalid;
}
if (parseStatus == ParserState.Done)
{
return(CreateHttpRequestMessage(uriScheme, httpRequest, stream, bytesRead - headerConsumed));
}
else if (parseStatus != ParserState.NeedMoreData)
{
throw Error.InvalidOperation(Properties.Resources.HttpMessageParserError, headerConsumed, buffer);
}
else if (bytesRead == 0)
{
throw new IOException(Properties.Resources.ReadAsHttpMessageUnexpectedTermination);
}
}
}
public static Task <HttpRequestMessage> ReadAsHttpRequestMessageAsync(this HttpContent content, string uriScheme, int bufferSize, int maxHeaderSize)
{
if (content == null)
{
throw Error.ArgumentNull("content");
}
if (uriScheme == null)
{
throw Error.ArgumentNull("uriScheme");
}
if (!Uri.CheckSchemeName(uriScheme))
{
throw Error.Argument("uriScheme", Properties.Resources.HttpMessageParserInvalidUriScheme, uriScheme, typeof(Uri).Name);
}
if (bufferSize < MinBufferSize)
{
throw Error.ArgumentMustBeGreaterThanOrEqualTo("bufferSize", bufferSize, MinBufferSize);
}
if (maxHeaderSize < InternetMessageFormatHeaderParser.MinHeaderSize)
{
throw Error.ArgumentMustBeGreaterThanOrEqualTo("maxHeaderSize", maxHeaderSize, InternetMessageFormatHeaderParser.MinHeaderSize);
}
HttpMessageContent.ValidateHttpMessageContent(content, true, true);
return(content.ReadAsStreamAsync().Then(stream =>
{
HttpUnsortedRequest httpRequest = new HttpUnsortedRequest();
HttpRequestHeaderParser parser = new HttpRequestHeaderParser(httpRequest, HttpRequestHeaderParser.DefaultMaxRequestLineSize, maxHeaderSize);
ParserState parseStatus;
byte[] buffer = new byte[bufferSize];
int bytesRead = 0;
int headerConsumed = 0;
while (true)
{
try
{
bytesRead = stream.Read(buffer, 0, buffer.Length);
}
catch (Exception e)
{
throw new IOException(Properties.Resources.HttpMessageErrorReading, e);
}
try
{
parseStatus = parser.ParseBuffer(buffer, bytesRead, ref headerConsumed);
}
catch (Exception)
{
parseStatus = ParserState.Invalid;
}
if (parseStatus == ParserState.Done)
{
return CreateHttpRequestMessage(uriScheme, httpRequest, stream, bytesRead - headerConsumed);
}
else if (parseStatus != ParserState.NeedMoreData)
{
throw Error.InvalidOperation(Properties.Resources.HttpMessageParserError, headerConsumed, buffer);
}
}
}));
}
