chore: proxyDialer can limited support old dial function

adapter/outbound/base.go

@@ -3,7 +3,6 @@ package outbound
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"net"
 	"strings"
 
@@ -47,31 +46,31 @@ func (b *Base) Type() C.AdapterType {
 
 // StreamConn implements C.ProxyAdapter
 func (b *Base) StreamConn(c net.Conn, metadata *C.Metadata) (net.Conn, error) {
-	return c, errors.New("no support")
+	return c, C.ErrNotSupport
 }
 
 func (b *Base) DialContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.Conn, error) {
-	return nil, errors.New("no support")
+	return nil, C.ErrNotSupport
 }
 
 // DialContextWithDialer implements C.ProxyAdapter
 func (b *Base) DialContextWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.Conn, err error) {
-	return nil, errors.New("no support")
+	return nil, C.ErrNotSupport
 }
 
 // ListenPacketContext implements C.ProxyAdapter
 func (b *Base) ListenPacketContext(ctx context.Context, metadata *C.Metadata, opts ...dialer.Option) (C.PacketConn, error) {
-	return nil, errors.New("no support")
+	return nil, C.ErrNotSupport
 }
 
 // ListenPacketWithDialer implements C.ProxyAdapter
 func (b *Base) ListenPacketWithDialer(ctx context.Context, dialer C.Dialer, metadata *C.Metadata) (_ C.PacketConn, err error) {
-	return nil, errors.New("no support")
+	return nil, C.ErrNotSupport
 }
 
 // SupportWithDialer implements C.ProxyAdapter
-func (b *Base) SupportWithDialer() bool {
-	return false
+func (b *Base) SupportWithDialer() C.NetWork {
+	return C.InvalidNet
 }
 
 // SupportUOT implements C.ProxyAdapter