default header reset

README.md

@@ -27,7 +27,7 @@ func main() {
 	r.Use(middleware1, middleware2)
 
 	// let's add a route
-	r.Get("/hello", func(w http.ResponseWriter, r *http.Request) {
+	r.GET("/hello", func(w http.ResponseWriter, r *http.Request) {
 		w.Write([]byte("i am route /hello"))
 	})
 	// r.Post(pattern string, h http.HandlerFunc)
@@ -37,7 +37,7 @@ func main() {
 	// you can inline middleware(s) to a route
 	r.
 		With(mwInline).
-		Get("/hello-2", func(w http.ResponseWriter, r *http.Request) {
+		GET("/hello-2", func(w http.ResponseWriter, r *http.Request) {
 			w.Write([]byte("i am route /hello-2 with my own middleware"))
 		})
 
@@ -64,13 +64,13 @@ func main() {
 	// create a group of few routes with their own middlewares
 	r.Group(func(grp *mux.Router) {
 		grp.Use(mwGroup)
-		grp.Get("/group", func(w http.ResponseWriter, r *http.Request) {
+		grp.GET("/group", func(w http.ResponseWriter, r *http.Request) {
 			w.Write([]byte("i am route /group"))
 		})
 	})
 
 	// catches all
-	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+	r.GET("/", func(w http.ResponseWriter, r *http.Request) {
 		w.Write([]byte("hello there"))
 	})
 

example/main.go

@@ -25,7 +25,7 @@ func main() {
 	r.Use(middleware1, middleware2)
 
 	// let's add a route
-	r.Get("/hello", func(w http.ResponseWriter, r *http.Request) {
+	r.GET("/hello", func(w http.ResponseWriter, r *http.Request) {
 		w.Write([]byte("i am route /hello"))
 	})
 	// r.Post(pattern string, h http.HandlerFunc)
@@ -35,7 +35,7 @@ func main() {
 	// you can inline middleware(s) to a route
 	r.
 		With(mwInline).
-		Get("/hello-2", func(w http.ResponseWriter, r *http.Request) {
+		GET("/hello-2", func(w http.ResponseWriter, r *http.Request) {
 			w.Write([]byte("i am route /hello-2 with my own middleware"))
 		})
 
@@ -62,13 +62,13 @@ func main() {
 	// create a group of few routes with their own middlewares
 	r.Group(func(grp *mux.Router) {
 		grp.Use(mwGroup)
-		grp.Get("/group", func(w http.ResponseWriter, r *http.Request) {
+		grp.GET("/group", func(w http.ResponseWriter, r *http.Request) {
 			w.Write([]byte("i am route /group"))
 		})
 	})
 
 	// catches all
-	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
+	r.GET("/", func(w http.ResponseWriter, r *http.Request) {
 		w.Write([]byte("hello there"))
 	})
 

middleware/cors.go

@@ -49,7 +49,7 @@ type OriginValidator func(string) bool
 var (
 	defaultCorsOptionStatusCode = http.StatusOK
 	defaultCorsMethods          = []string{http.MethodHead, http.MethodGet, http.MethodPost}
-	defaultCorsHeaders          = []string{"Accept", "Accept-Language", "Content-Type", "Content-Language", "Origin"}
+	defaultCorsHeaders          = []string{"Accept", "Accept-Language", "Content-Language", "Origin"}
 	// (WebKit/Safari v9 sends the Origin header by default in AJAX requests).
 )
 

router.go

@@ -17,9 +17,6 @@ func NewRouter() *Router {
 	r := &Router{
 		mux: http.NewServeMux(),
 	}
-
-	// catch all options
-	r.mux.Handle("OPTIONS /", optionsHandler{})
 	return r
 }
 

router_options_handler.go

@@ -1,21 +0,0 @@
-package mux
-
-import (
-	"io"
-	"net/http"
-)
-
-type optionsHandler struct{}
-
-func (optionsHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Length", "0")
-	if r.ContentLength != 0 {
-		// Read up to 4KB of OPTIONS body (as mentioned in the
-		// spec as being reserved for future use), but anything
-		// over that is considered a waste of server resources
-		// (or an attack) and we abort and close the connection,
-		// courtesy of MaxBytesReader's EOF behavior.
-		mb := http.MaxBytesReader(w, r.Body, 4<<10)
-		io.Copy(io.Discard, mb)
-	}
-}

router_serve.go

@@ -3,6 +3,7 @@ package mux
 import (
 	"context"
 	"errors"
+	"io"
 	"log/slog"
 	"net/http"
 	"os"
@@ -13,6 +14,21 @@ type ServeCB func(srv *http.Server) error
 
 // Serve with graceful shutdown
 func (r *Router) Serve(cb ServeCB) {
+	// catch all options
+	// lets get it thorugh all middlewares
+	r.OPTIONS("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Length", "0")
+		if r.ContentLength != 0 {
+			// Read up to 4KB of OPTIONS body (as mentioned in the
+			// spec as being reserved for future use), but anything
+			// over that is considered a waste of server resources
+			// (or an attack) and we abort and close the connection,
+			// courtesy of MaxBytesReader's EOF behavior.
+			mb := http.MaxBytesReader(w, r.Body, 4<<10)
+			io.Copy(io.Discard, mb)
+		}
+	})
+
 	srv := &http.Server{
 		Handler: r,
 	}