public HttpData Receive(IDataStream s)
{
lock (contentLock)
{
if (useContentData)
{
contentData.Add(s);
}
dataBuilder.Append(s);
if (state == ParsingState.Header)
{
try
{
if (parser.Parse(contentData, isResponse))
{
state = ParsingState.Body;
try
{
var code = parser.StatusCode;
// header parsing is finished
if (LastRequestMethod == HttpRequestMethod.HEAD)
{
info = new HttpBodyLengthInfo((long)0);
}
else if (LastRequestMethod == HttpRequestMethod.CONNECT && code > 199 && code < 300)
{
info = new HttpBodyLengthInfo((long)0);
}
else
{
info = parser.GetBodyLengthInfo(!isResponse);
}
useContentData = info.Type == HttpBodyLengthInfo.LengthType.Chunked;
headerLength = parser.HeaderLength;
if (contentData.Length - parser.HeaderLength > 0)
{
var tmpList = new StreamList();
var contentStart = new ByteArray(contentData, parser.HeaderLength);
tmpList.Add(contentStart);
contentData = tmpList;
}
else
{
contentData = new StreamList();
}
}
catch (BadRequestException)
{
throw new HttpInvalidMessageException();
}
}
}
catch (HttpHeaderParserException)
{
throw new HttpInvalidMessageException();
}
}
if (state == ParsingState.Body)
{
if (info.Type == HttpBodyLengthInfo.LengthType.Exact && info.Length <= dataBuilder.Length - headerLength)
{
var resStream = dataBuilder.Close();
return(parser.Create(new StreamSegment(resStream, 0, headerLength), new StreamSegment(resStream, headerLength, info.Length), resStream));
}
else if (info.Type == HttpBodyLengthInfo.LengthType.Chunked)
{
parseChunkedBody();
}
}
}
if (state == ParsingState.CheckingChunedTrailer)
{
if (contentData.Length >= 2)
{
// check CRLF
bool chunkedEnd = contentData.ReadByte(0) == 13 && contentData.ReadByte(1) == 10;
if (chunkedEnd)
{
contentData = new StreamList();
var resStream = dataBuilder.Close();
return(parser.Create(new StreamSegment(resStream, 0, headerLength), new StreamSegment(resStream, headerLength), resStream));
}
else
{
parser.ParseChunkedTrailer();
state = ParsingState.ParsingChunkedTrailer;
}
}
}
if (state == ParsingState.ParsingChunkedTrailer)
{
if (parser.Parse(contentData, isResponse))
{
contentData = new StreamList();
var resStream = dataBuilder.Close();
return(parser.Create(new StreamSegment(resStream, 0, headerLength), new StreamSegment(resStream, headerLength), resStream));
}
}
return(null);
}