SOCKS5 request with 'NoneNoneNone' hash
ref: http://thread.gmane.org/gmane.network.jabber.devel/26751
Magnus Henoch writes:
In the JEP-0065 proxy at proxy.jabber.cd.chalmers.se, we often receive CONNECT requests to the address "ed6f9a539fd86ceb66a5290fcde4b55e32082dd2". The requests come from completely different IP addresses all over the world, so it's unlikely that the JIDs and SIDs of these clients would become the same hash. The requests are denied, since there are already two connections to that "address" - but where do they come from?
Some more research tells me that these requests come from Gajim 0.10, and that the address above is the SHA-1 hash of "NoneNoneNone", as Gajim just checks that a SOCKS5 server is listening after it has queried a proxy.