minor

Former-commit-id: 85c8b1e20da6e39485478025ef1b0f80ef953e4a

core/netutil/ip.go

@@ -11,7 +11,7 @@ https://husobee.github.io/golang/ip-address/2015/12/17/remote-ip-go.html request
 https://github.com/kataras/iris/issues/1453
 */
 
-//IPRange is a structure that holds the start and end of a range of IP Addresses.
+// IPRange is a structure that holds the start and end of a range of IP Addresses.
 type IPRange struct {
 	Start net.IP `json:"start" yaml:"Start" toml"Start"`
 	End   net.IP `json:"end" yaml:"End" toml"End"`

core/router/api_builder.go

@@ -463,7 +463,7 @@ func (api *APIBuilder) CreateRoutes(methods []string, relativePath string, handl
 	subdomain, path := splitSubdomainAndPath(fullpath)
 
 	// if allowMethods are empty, then simply register with the passed, main, method.
-	methods = append(api.allowMethods, methods...)
+	methods = removeDuplString(append(api.allowMethods, methods...))
 
 	routes := make([]*Route, len(methods))
 
@@ -487,6 +487,20 @@ func (api *APIBuilder) CreateRoutes(methods []string, relativePath string, handl
 	return routes
 }
 
+func removeDuplString(elements []string) (result []string) {
+	seen := make(map[string]struct{})
+
+	for v := range elements {
+		val := elements[v]
+		if _, ok := seen[val]; !ok {
+			seen[val] = struct{}{}
+			result = append(result, val)
+		}
+	}
+
+	return result
+}
+
 // Party groups routes which may have the same prefix and share same handlers,
 // returns that new rich subrouter.
 //