Function "languages()" isn't working

So i tried to use this API in my project and, although, detect() and translate() worked pretty well, i couldn't make the languages() function to work since i received error 405 from both local and external hosts. I managed to fix it by setting curl with curl_easy_setopt(curl, CURLOPT_HTTPGET, 1L), but if you do that in the curl_post function the translation and detection will break.

Start at the languages() and curl_post entry points and reproduce the 405 response against both local and external hosts. Compare the request handling used by languages() with detect() and translate(); done means languages() succeeds without breaking detection or translation.

Written by the indexing model from the issue text.