BREAKING Change to single page url

README.md

@@ -58,7 +58,7 @@ The name and related link can be provided as well.
 
 ```toml
 PORT = 4000
-ALLOWED_HOSTS = "http://localhost:4000"
+PAGE_URL = "http://localhost:4000"
 TITLE = "GoDash"
 
 LOG_LEVEL = "info"
@@ -89,8 +89,7 @@ services:
       - PUID=1000
       - PGID=1000
       - TZ=Europe/Berlin
-      # can be multiple hosts, comma separated, no spaces
-      - ALLOWED_HOSTS=https://home.example.com
+      - PAGE_URL=https://home.example.com
       # change title to something else
       - TITLE=GoDash
       # available log-levels: trace,debug,info,warn,error,fatal,panic

config/server.json

@@ -1,5 +1,5 @@
 {
   "port": 4000,
-  "allowed_hosts": "http://localhost:4000",
+  "PAGE_URL": "http://localhost:4000",
   "title": "GoDash"
 }

server/middlewares.go

@@ -19,7 +19,7 @@ func (server *Server) setupMiddlewares() {
 	server.Router.Use(middleware.AllowContentEncoding("deflate", "gzip"))
 	server.Router.Use(middleware.Compress(5, "text/html", "text/js", "text/css"))
 	server.Router.Use(cors.Handler(cors.Options{
-		AllowedOrigins:   server.AllowedHosts,
+		AllowedOrigins:   []string{server.PageUrl},
 		AllowedMethods:   []string{"GET", "OPTIONS"},
 		AllowedHeaders:   []string{"Accept-Encoding", "Content-Type"},
 		AllowCredentials: false,

server/types.go

@@ -6,9 +6,9 @@ import (
 )
 
 type Server struct {
-	Router       *chi.Mux
-	Hub          *hub.Hub
-	Port         int
-	AllowedHosts []string `mapstructure:"ALLOWED_HOSTS"`
-	Title        string
+	Router  *chi.Mux
+	Hub     *hub.Hub
+	Port    int
+	PageUrl string `mapstructure:"PAGE_URL"`
+	Title   string
 }

server/websocket.go

@@ -5,18 +5,9 @@ import (
 	"net/http"
 )
 
-func inAllowedHosts(str string) bool {
-	for _, a := range server.AllowedHosts {
-		if a == str {
-			return true
-		}
-	}
-	return false
-}
-
 var upgrader = websocket.Upgrader{
 	CheckOrigin: func(r *http.Request) bool {
-		return inAllowedHosts(r.Header.Get("Origin"))
+		return server.PageUrl == r.Header.Get("Origin")
 	},
 	ReadBufferSize:  1024,
 	WriteBufferSize: 1024,