Set a gio.proxy_resolver.ProxyResolver to be used by session on new connections.
If proxy_resolver is null then no proxies will be used. See propertySession:proxy-resolver for more information.
a #GProxyResolver or null
Set a gio.proxy_resolver.ProxyResolver to be used by session on new connections.
If proxy_resolver is null then no proxies will be used. See propertySession:proxy-resolver for more information.