CURL is not following 301 Redirects, what do I need to do?
In the PHP world, the option is named CURLOPT_FOLLOWLOCATION. I assume the constant names are standardized and come from the same header file, so this should work for you.
curl_easy_setopt(eh, CURLOPT_FOLLOWLOCATION, 1); (or whatever "boolean true" is in this context.)
Alternatively, when receiving a 30x status code, you can parse the Location header manually for the new address. Obviously though, the "follow location" option is much easier, as it doesn't require a second request.