public JsonUnmarshallerContext(Stream responseStream, bool maintainResponseBody, IWebResponseData responseData)
{
if (maintainResponseBody)
{
this.WrappingStream = new CachingWrapperStream(responseStream, AWSConfigs.LoggingConfig.LogResponsesSizeLimit);
responseStream = this.WrappingStream;
}
this.WebResponseData = responseData;
this.MaintainResponseBody = maintainResponseBody;
//if the json unmarshaller context is being called internally without their being a http response then the response data would be null
if(responseData != null)
{
long contentLength;
bool parsedContentLengthHeader = long.TryParse(responseData.GetHeaderValue("Content-Length"), out contentLength);
//possible scenario in unity where the content length in header does not match responseData.ContentLength
//responseData.ContentLength represents actual bytes downloaded header value represents the length sent from the server.
//we will only try to setup crc32 in case the responseData.ContentLength is same as the content length from the header.
//failing to do so may result in the stream being cut off in the middle (since the zip stream length is less than the responseData.ContentLength)
//or may result in a crc32 exception since the crc32 calcuated value for an unzipped stream will differ from the crc32 values for a zipped stream.
//
// Temporary work around checking Content-Encoding for an issue with CoreCLR on Linux returning Content-Length for a gzipped response.
// Causing the SDK to attempt a CRC check over the gzipped response data with a CRC value for the uncompressed value.
// The Content-Encoding check can be removed with the following github issue is shipped.
// https://github.com/dotnet/corefx/issues/6796
if (parsedContentLengthHeader && responseData.ContentLength.Equals(contentLength) &&
string.IsNullOrEmpty(responseData.GetHeaderValue("Content-Encoding")))
{
base.SetupCRCStream(responseData, responseStream, contentLength);
}
}
if (this.CrcStream != null)
streamReader = new StreamReader(this.CrcStream);
else
streamReader = new StreamReader(responseStream);
jsonReader = new JsonReader(streamReader);
}
