Refactor admin socket, export request/response structs, remove types package

src/multicast/admin.go

@@ -1,13 +1,34 @@
 package multicast
 
-import "github.com/yggdrasil-network/yggdrasil-go/src/admin"
+import (
+	"encoding/json"
+
+	"github.com/yggdrasil-network/yggdrasil-go/src/admin"
+)
+
+type GetMulticastInterfacesRequest struct{}
+type GetMulticastInterfacesResponse struct {
+	Interfaces []string `json:"multicast_interfaces"`
+}
+
+func (m *Multicast) getMulticastInterfacesHandler(req *GetMulticastInterfacesRequest, res *GetMulticastInterfacesResponse) error {
+	res.Interfaces = []string{}
+	for _, v := range m.Interfaces() {
+		res.Interfaces = append(res.Interfaces, v.Name)
+	}
+	return nil
+}
 
 func (m *Multicast) SetupAdminHandlers(a *admin.AdminSocket) {
-	a.AddHandler("getMulticastInterfaces", []string{}, func(in admin.Info) (admin.Info, error) {
-		var intfs []string
-		for _, v := range m.Interfaces() {
-			intfs = append(intfs, v.Name)
+	_ = a.AddHandler("getMulticastInterfaces", []string{}, func(in json.RawMessage) (interface{}, error) {
+		req := &GetMulticastInterfacesRequest{}
+		res := &GetMulticastInterfacesResponse{}
+		if err := json.Unmarshal(in, &req); err != nil {
+			return nil, err
 		}
-		return admin.Info{"multicast_interfaces": intfs}, nil
+		if err := m.getMulticastInterfacesHandler(req, res); err != nil {
+			return nil, err
+		}
+		return res, nil
 	})
 }