dhcpd: imp names, docs

internal/dhcpd/config.go

@@ -113,9 +113,9 @@ type V4ServerConf struct {
 // errNilConfig is an error returned by validation method if the config is nil.
 const errNilConfig errors.Error = "nil config"
 
-// tryTo4 returns a 4-byte version of ip.  An error is returned if the passed ip
-// is not an IPv4.
-func tryTo4(ip net.IP) (ip4 net.IP, err error) {
+// ensureV4 returns a 4-byte version of ip.  An error is returned if the passed
+// ip is not an IPv4.
+func ensureV4(ip net.IP) (ip4 net.IP, err error) {
 	if ip == nil {
 		return nil, fmt.Errorf("%v is not an IP address", ip)
 	}
@@ -140,7 +140,7 @@ func (c *V4ServerConf) Validate() (err error) {
 	}
 
 	var gatewayIP net.IP
-	gatewayIP, err = tryTo4(c.GatewayIP)
+	gatewayIP, err = ensureV4(c.GatewayIP)
 	if err != nil {
 		// Don't wrap an errors since it's inforative enough as is and there is
 		// an annotation deferred already.

internal/dhcpd/http_windows.go

@@ -19,8 +19,8 @@ type jsonError struct {
 	Message string `json:"message"`
 }
 
-// notImplemented returns a handler that replies to any request with an HTTP 501
-// Not Implemented status and a JSON error with the provided message msg.
+// notImplemented is a handler that replies to any request with an HTTP 501 Not
+// Implemented status and a JSON error with the provided message msg.
 //
 // TODO(a.garipov): Either take the logger from the server after we've
 // refactored logging or make this not a method of *Server.