feat(protocol): allow override of dial func

reach/client/options.go

@@ -16,6 +16,7 @@ type Options struct {
 	FallbackProtocol  protocol.Identifier
 	AvailableTimeout  time.Duration
 	Logger            logger.Logger
+	Dial              protocol.DialFunc
 }
 
 type OptionFunc func(opts *Options)
@@ -27,6 +28,7 @@ func NewOptions(funcs ...OptionFunc) *Options {
 		Protocols:         protocol.DefaultRegistry(),
 		AvailableTimeout:  5 * time.Second,
 		Logger:            slog.Default(),
+		Dial:              protocol.DefaultDialFunc,
 	}
 
 	for _, fn := range funcs {
@@ -65,3 +67,9 @@ func WithAvailableTimeout(timeout time.Duration) OptionFunc {
 		opts.AvailableTimeout = timeout
 	}
 }
+
+func WithDial(dial protocol.DialFunc) OptionFunc {
+	return func(opts *Options) {
+		opts.Dial = dial
+	}
+}