fix: correctly implement references to proxies

adapter/adapter.go

@@ -9,10 +9,8 @@ import (
 	"net/http"
 	"net/netip"
 	"net/url"
-	"runtime"
 	"strconv"
 	"strings"
-	"sync"
 	"time"
 
 	"github.com/metacubex/mihomo/common/atomic"
@@ -41,9 +39,6 @@ type Proxy struct {
 	alive   atomic.Bool
 	history *queue.Queue[C.DelayHistory]
 	extra   *xsync.MapOf[string, *internalProxyState]
-
-	closeOnce sync.Once
-	closeErr  error
 }
 
 // Adapter implements C.Proxy
@@ -296,27 +291,12 @@ func (p *Proxy) URLTest(ctx context.Context, url string, expectedStatus utils.In
 	return
 }
 
-func (p *Proxy) Close() error {
-	p.closeOnce.Do(func() {
-		runtime.SetFinalizer(p, nil)
-		p.closeErr = p.ProxyAdapter.Close()
-	})
-	return p.closeErr
-}
-
 func NewProxy(adapter C.ProxyAdapter) *Proxy {
-	proxy := &Proxy{
+	return &Proxy{
 		ProxyAdapter: adapter,
 		history:      queue.New[C.DelayHistory](defaultHistoriesNum),
 		alive:        atomic.NewBool(true),
 		extra:        xsync.NewMapOf[string, *internalProxyState]()}
-
-	// auto close ProxyAdapter
-	runtime.SetFinalizer(proxy, func(p *Proxy) {
-		log.Debugln("Closing outdated proxy [%s]", p.Name())
-		_ = p.Close()
-	})
-	return proxy
 }
 
 func urlToMetadata(rawURL string) (addr C.Metadata, err error) {