anchor.diff:          // set headers
           let hasContentType = setHeaders headers req
   
  +        let automaticDecompression = ref true
  +
       #if FX_NO_WEBREQUEST_AUTOMATICDECOMPRESSION
           if not (req?AutomaticDecompression <- 3) then 
  +            automaticDecompression := false
               req.Headers.[HeaderEnum.AcceptEncoding] <- "gzip,deflate"
       #else
           req.AutomaticDecompression <- DecompressionMethods.GZip ||| DecompressionMethods.Deflate
  
positive.code: #endif
                  | _ -> 0, ""
  
              let contentEncoding = defaultArg (Map.tryFind HttpResponseHeaders.ContentEncoding headers) ""
  
              let stream = resp.GetResponseStream()
  
  
negative.code: #if FX_NO_WEBREQUEST_AUTOMATICDECOMPRESSION
          new MemoryStream(Ionic.Zlib.DeflateStream.UncompressBuffer(memoryStream.ToArray()))
  #else
          failwith "Automatic deflate decompression failed"
          memoryStream
  #endif
  
  