Kinda reminds me, I should work on my serverlist lib (Python).
IIRC I was working on IPv6 support.

P.S. It's asynchronous as well.

@Dune: As this library isn't installed per default it doesn't make that much sense to require it.

• load the server list from the master servers,

• request the status of 0.5 and 0.6 servers and

• even more.

But the best is that it works fast. Requesting the server list and the status of every server in this list takes around 5 seconds. (It can vary. With some fine tuning it is finish within 2 seconds on my virtual server.)

I've seen a some other PHP scripts doing the same, but usually the scripts take a minute or more to fetch the whole list, because they wait for a server's response before requesting the next. With 1000 servers where 60 of them time out in one second, such a script of course takes more than a minute. So I've taken a different approach and did it like the Teeworlds client: parallel requests.

My script also provides methods to request just the count of servers on a master server and the last version and list of default maps from the version server. Unfortunately the version server is offline, so i couldn't test the last two methods. Additionally my script contains a list of all countries that Teeworlds 0.6 supports (maybe even more, because I took the whole ISO 3166-1 list), with the short token and the full name.

For documentation and download, see this site: http://code.teele.eu/twrequest.