auto-redirect: Fix nftables available check

SagerNet · Jul 3, 2024 · 927ccee · 927ccee
1 parent 7506027
commit 927ccee
Showing 1 changed file with 11 additions and 1 deletion.
diff --git a/redirect_linux.go b/redirect_linux.go
@@ -173,7 +173,17 @@ func (r *autoRedirect) initializeNFTables() error {
 		return err
 	}
 	defer nft.CloseLasting()
-	_, err = nft.ListTablesOfFamily(nftables.TableFamilyIPv4)
+	done := make(chan struct{})
+	go func() {
+		_, err = nft.ListTablesOfFamily(nftables.TableFamilyIPv4)
+		close(done)
+	}()
+	select {
+	case <-time.After(time.Second):
+		// Fix stuck on some (old?) kernels
+		return E.New("netlink netfilter socket timeout")
+	case <-done:
+	}
 	if err != nil {
 		return err
 	}