fix: Temporarily delete marking node alive as false when error occurs

adapter/adapter.go

@@ -11,7 +11,6 @@ import (
 	"net/http"
 	"net/netip"
 	"net/url"
-	"strings"
 	"time"
 
 	"go.uber.org/atomic"
@@ -40,11 +39,6 @@ func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
 // DialContext implements C.ProxyAdapter
 func (p *Proxy) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
 	conn, err := p.ProxyAdapter.DialContext(ctx, metadata, opts...)
-	wasCancel := false
-	if err != nil {
-		wasCancel = strings.Contains(err.Error(), "operation was canceled")
-	}
-	p.alive.Store(err == nil || wasCancel)
 	return conn, err
 }
 
@@ -58,7 +52,6 @@ func (p *Proxy) DialUDP(metadata *C.Metadata) (C.PacketConn, error) {
 // ListenPacketContext implements C.ProxyAdapter
 func (p *Proxy) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
 	pc, err := p.ProxyAdapter.ListenPacketContext(ctx, metadata, opts...)
-	p.alive.Store(err == nil)
 	return pc, err
 }
 

adapter/outboundgroup/fallback.go

@@ -79,17 +79,23 @@ func (f *Fallback) Unwrap(metadata *C.Metadata) C.Proxy {
 
 func (f *Fallback) findAliveProxy(touch bool) C.Proxy {
 	proxies := f.GetProxies(touch)
-	al := proxies[0]
-	for i := len(proxies) - 1; i > -1; i-- {
-		proxy := proxies[i]
-		if proxy.Name() == f.selected && proxy.Alive() {
-			return proxy
-		}
-		if proxy.Alive() {
-			al = proxy
+	for _, proxy := range proxies {
+		if len(f.selected) == 0 {
+			if proxy.Alive() {
+				return proxy
+			}
+		} else {
+			if proxy.Name() == f.selected {
+				if proxy.Alive() {
+					return proxy
+				} else {
+					f.selected = ""
+				}
+			}
 		}
 	}
-	return al
+
+	return proxies[0]
 }
 
 func (f *Fallback) Set(name string) error {

adapter/outboundgroup/groupbase.go

@@ -151,6 +151,7 @@ func (gb *GroupBase) onDialFailed() {
 			gb.failedTime = time.Now()
 		} else {
 			if time.Since(gb.failedTime) > gb.failedTimeoutInterval() {
+				gb.failedTimes = 0
 				return
 			}