The online-host double-click handler called IPConverter::GetGeoLocation on
the UI thread before showing the floating tooltip, even when no local IP
database (QQWry/ip2region) was loaded. In that default configuration the
result is never displayed, yet the call issues up to three synchronous HTTP
requests (5s timeout each), delaying the tooltip by a network round trip or
worse.
Only run the lookup when a local database is actually loaded, and memoize
successful results per IP in a process-wide cache inside GetGeoLocation so
the remaining call sites (license activity, host-login fallback) do not
re-query the same IP. The cache uses function-local statics rather than
class members to keep IPConverter's layout unchanged and stay ABI-compatible
with the precompiled PrivateDesktop_Lib.lib QQWry/Ip2Region subclasses.
Co-Authored-By: deepseek-v4-pro
