rpn: m code comments

Author: ignoramous

intra/ipn/proxy.go

@@ -101,6 +101,7 @@ func (pxr *proxifier) addRpnProxy(acc RpnAcc, cc string) (Proxy, error) {
 		cc = noCountryForOldMen
 	}
 
+	// cc may be typcc;city (ref struct RpnServer.Key)
 	cc, _ = strings.CutPrefix(cc, typ)
 
 	txt, err := acc.Conf(cc)

intra/ipn/rpn.go

@@ -458,7 +458,7 @@ func (r *rpnp) get(cc string) (x.Proxy, error) {
 	r.mu.RUnlock()
 
 	if rpnid+cc == idstr(main) {
-		// FIXME: r.Proxy needs to be got after r.mu.RLock()
+		// return r as-is; r.p is always got after r.mu.RLock()
 		return r, nil
 	}
 	if !gotCC {

intra/ipn/rpn/cfg.go

@@ -53,7 +53,7 @@ var (
 
 type RpnAcc interface {
 	x.RpnAcc
-	ProviderID() string // x.RpnWg, x.RpnPro, x.RpnAmz
+	ProviderID() string // x.RpnWg, x.RpnPro, x.RpnAmz, x.RpnWin
 	MultiCountry() bool
 	Conf(key string) (string, error)
 }