Support changing system default ProxySelector Contributed by Robin Stevens <stevensro at gmail.com> The `ProxySelectorRoutePlanner` class which got deprecated in favor of the `SystemDefaultRoutePlanner` could deal with: - `null` as default `ProxySelector` - a change in the default `ProxySelector` This change ports that behavior to the `SystemDefaultRoutePlanner`.
httpcomponents/httpclient/trunk/httpclient5/src/main/java/org/apache/hc/client5/http/impl/routing/SystemDefaultRoutePlanner.java