gzip decompression seems not to work for default adapter

[wuarmin]

Hey,

I need gzip decompression and the docs say, that this should work out of the box with the default adapter Faraday::Adapter::NetHttp.

But my response is not decompressed, although I set the Accept-Encoding-Header to gzip, deflate and the server responds properly:

# response headers
{
  "server"            => "Apache-Coyote/1.1",
  "content-type"      => "text/xml;charset=UTF-8",
  "transfer-encoding" => "chunked",
  "content-encoding"  => "gzip",
  "vary"              => "Accept-Encoding",
  "date"              => "Thu, 05 Jan 2023 13:55:44 GMT"
}

What am I doing wrong?
thanks!

[iMacTia]

Faraday does not manually decompress responses, and instead it relies on the underlying adapter.
According to the documentation, Net::HTTP automatically decompresses gzip responses, except in some exceptional cases.
There have also been cases in the past where some gem were monkey-patching Net::HTTP incorrectly causing this not to work (flexera-public/right_http_connection#20).

It's hard to say what's wrong in your case, but my suggestion would be to test in isolation in order to identify the issue:

• Using plain Net::HTTP in a irb console, without Faraday or any other gem, does the decompression of that API response work?
  • YES: does it work using Faraday?
    • YES -> something specific to the project is affecting the decompression
    • NO -> There might actually be a bug in Faraday!
  • NO: something is wrong with Net::HTTP, maybe it's one of the exceptions mentioned in the doc