add vhost for node

chain/hop.go

@@ -4,6 +4,7 @@ import "context"
 
 type SelectOptions struct {
 	Addr string
+	Host string
 }
 
 type SelectOption func(*SelectOptions)
@@ -14,6 +15,12 @@ func AddrSelectOption(addr string) SelectOption {
 	}
 }
 
+func HostSelectOption(host string) SelectOption {
+	return func(o *SelectOptions) {
+		o.Host = host
+	}
+}
+
 type Hop interface {
 	Nodes() []*Node
 	Select(ctx context.Context, opts ...SelectOption) *Node