area/httphelp wantedtech debt
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描述
Currently StreamInfo::route overloads two concepts: looking up the route and re-resolving the route. We should consider splitting this into
RouteConstSharedPtr route() const;
RouteConstSharedPtr resolveRoute();
to distinguish between a lookup and an intentional re-resolution of the route. route() would still have to resolve the route in case it hasn't been resolved, but at the very least this simplifies
callbacks_.clearRouteCache();
auto route = callbacks_.route();
// Act on route.
into
auto route = callbacks_.resolveRoute();
// Act on route.
and the semantics of the two functions are more obvious at a glance.