Android: patch

adapter/provider/healthcheck.go

@@ -18,6 +18,7 @@ import (
 
 const (
 	defaultURLTestTimeout = time.Second * 5
+	defaultURLTestURL     = "https://www.gstatic.com/generate_204"
 )
 
 type HealthCheckOption struct {
@@ -148,6 +149,11 @@ func (hc *HealthCheck) stop() {
 }
 
 func (hc *HealthCheck) check() {
+
+	if len(hc.proxies) == 0 {
+		return
+	}
+
 	_, _, _ = hc.singleDo.Do(func() (struct{}, error) {
 		id := utils.NewUUIDV4().String()
 		log.Debugln("Start New Health Checking {%s}", id)
@@ -223,6 +229,7 @@ func NewHealthCheck(proxies []C.Proxy, url string, interval uint, lazy bool, exp
 	if len(url) == 0 {
 		interval = 0
 		expectedStatus = nil
+		url = defaultURLTestURL
 	}
 
 	return &HealthCheck{