I've just moved DokuWiki to a new server, and find that when I try to use the Extension Manager, I get the error:
The plugin repository could not be contacted. Make sure your server is allowed to contact www.dokuwiki.org and check your proxy settings.
I've added www.dokuwiki.org (46.4.55.201/32) to the list of allowed outgoing hosts, and I can curl the EM API on www.dokuwiki.org/lib/plugins/pluginrepo/api.php via both HTTP and HTTPS as www-data user, but I flushed the firewall to see if that was a problem: still the same error.
I do notice that the page takes about 6 seconds to load, while using curl on the EM API takes about 12 seconds to return. Is there a timeout involved?
Thanks,
Iain.