fix other part of constructor

resolve/resolver_options.go

@@ -0,0 +1,32 @@
+package resolver
+
+import (
+	"fmt"
+	"strconv"
+)
+
+//Option is a Resolver option
+type Option func(*Resolver) error
+
+//SetHost sets the host of the client's SAM bridge
+func SetHost(s string) func(*Resolver) error {
+	return func(c *Resolver) error {
+		c.samhost = s
+		return nil
+	}
+}
+
+//SetPort sets the port of the client's SAM bridge
+func SetPort(v string) func(*Resolver) error {
+	return func(c *Resolver) error {
+		port, err := strconv.Atoi(v)
+		if err != nil {
+			return fmt.Errorf("Invalid port; non-number.")
+		}
+		if port < 65536 && port > -1 {
+			c.samport = v
+			return nil
+		}
+		return fmt.Errorf("Invalid port.")
+	}
+}