Merge pull request #6712 from ethereum-optimism/jg/retry_when_dialing_in_fpp_host

op-program: Set retry when dialing

op-program/host/host.go

@@ -188,13 +188,13 @@ func PreimageServer(ctx context.Context, logger log.Logger, cfg *config.Config,
 
 func makePrefetcher(ctx context.Context, logger log.Logger, kv kvstore.KV, cfg *config.Config) (*prefetcher.Prefetcher, error) {
 	logger.Info("Connecting to L1 node", "l1", cfg.L1URL)
-	l1RPC, err := client.NewRPC(ctx, logger, cfg.L1URL)
+	l1RPC, err := client.NewRPC(ctx, logger, cfg.L1URL, client.WithDialBackoff(10))
 	if err != nil {
 		return nil, fmt.Errorf("failed to setup L1 RPC: %w", err)
 	}
 
 	logger.Info("Connecting to L2 node", "l2", cfg.L2URL)
-	l2RPC, err := client.NewRPC(ctx, logger, cfg.L2URL)
+	l2RPC, err := client.NewRPC(ctx, logger, cfg.L2URL, client.WithDialBackoff(10))
 	if err != nil {
 		return nil, fmt.Errorf("failed to setup L2 RPC: %w", err)
 	}