Improve: Dial would reset proxy alive status

hub/executor/executor.go

@@ -1,7 +1,6 @@
 package executor
 
 import (
-	adapters "github.com/Dreamacro/clash/adapters/outbound"
 	"github.com/Dreamacro/clash/config"
 	C "github.com/Dreamacro/clash/constant"
 	"github.com/Dreamacro/clash/dns"
@@ -66,14 +65,9 @@ func updateProxies(proxies map[string]C.Proxy) {
 	tunnel := T.Instance()
 	oldProxies := tunnel.Proxies()
 
-	// close old goroutine
+	// close proxy group goroutine
 	for _, proxy := range oldProxies {
-		switch raw := proxy.(type) {
-		case *adapters.URLTest:
-			raw.Close()
-		case *adapters.Fallback:
-			raw.Close()
-		}
+		proxy.Destroy()
 	}
 
 	tunnel.UpdateProxies(proxies)

hub/route/proxies.go

@@ -81,12 +81,11 @@ func updateProxy(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
-
-	selector, ok := proxy.(*A.Selector)
+	proxy := r.Context().Value(CtxKeyProxy).(*A.Proxy)
+	selector, ok := proxy.ProxyAdapter.(*A.Selector)
 	if !ok {
 		render.Status(r, http.StatusBadRequest)
-		render.JSON(w, r, ErrBadRequest)
+		render.JSON(w, r, newError("Must be a Selector"))
 		return
 	}
 
@@ -113,7 +112,7 @@ func getProxyDelay(w http.ResponseWriter, r *http.Request) {
 
 	sigCh := make(chan int16)
 	go func() {
-		t, err := A.DelayTest(proxy, url)
+		t, err := proxy.URLTest(url)
 		if err != nil {
 			sigCh <- 0
 		}