Add a limit of 10 unidentified connections per IP

Everything which isn't a CClient with a successful login counts as an
unidentified connection in this context. Modules who don't want this kind of
limit on their listening sockets can override CSocket::ConnectionFrom(), but
their sockets will still count towards this limit.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1561 726aef4b-f618-498e-8847-2d620e286838

Socket.h

@@ -98,6 +98,8 @@ public:
 
 		return TSocketManager<CZNCSock>::Connect(C, pcSock);
 	}
+
+	unsigned int GetAnonConnectionCount(const CString &sIP) const;
 private:
 protected:
 #ifdef HAVE_ARES