Redirection status codes for methods different than GET

docs/configuration/ping.md

@@ -27,7 +27,7 @@ The `/ping` health-check URL is enabled with the command-line `--ping` or config
 Thus, if you have a regular path for `/foo` and an entrypoint on `:80`, you would access them as follows:
 
 * Regular path: `http://hostname:80/foo`
-* Dashboard: `http://hostname:8080/`
+* Admin panel: `http://hostname:8080/`
 * Ping URL: `http://hostname:8080/ping`
 
 However, for security reasons, you may want to be able to expose the `/ping` health-check URL to outside health-checkers, e.g. an Internet service or cloud load-balancer, _without_ exposing your dashboard's port.

middlewares/redirect/redirect.go

@@ -125,8 +125,15 @@ type moveHandler struct {
 func (m *moveHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	rw.Header().Set("Location", m.location.String())
 	status := http.StatusFound
+	if req.Method != http.MethodGet {
+		status = http.StatusTemporaryRedirect
+	}
+
 	if m.permanent {
 		status = http.StatusMovedPermanently
+		if req.Method != http.MethodGet {
+			status = http.StatusPermanentRedirect
+		}
 	}
 	rw.WriteHeader(status)
 	rw.Write([]byte(http.StatusText(status)))

middlewares/redirect/redirect_test.go

@@ -17,6 +17,7 @@ func TestNewEntryPointHandler(t *testing.T) {
 		desc           string
 		entryPoint     *configuration.EntryPoint
 		permanent      bool
+		method         string
 		url            string
 		expectedURL    string
 		expectedStatus int
@@ -59,6 +60,24 @@ func TestNewEntryPointHandler(t *testing.T) {
 			expectedURL:    "http://foo:80",
 			expectedStatus: http.StatusMovedPermanently,
 		},
+		{
+			desc:           "HTTP to HTTP POST",
+			entryPoint:     &configuration.EntryPoint{Address: ":80"},
+			permanent:      false,
+			url:            "http://foo:90",
+			method:         http.MethodPost,
+			expectedURL:    "http://foo:80",
+			expectedStatus: http.StatusTemporaryRedirect,
+		},
+		{
+			desc:           "HTTP to HTTP POST permanent",
+			entryPoint:     &configuration.EntryPoint{Address: ":80"},
+			permanent:      true,
+			url:            "http://foo:90",
+			method:         http.MethodPost,
+			expectedURL:    "http://foo:80",
+			expectedStatus: http.StatusPermanentRedirect,
+		},
 		{
 			desc:          "invalid address",
 			entryPoint:    &configuration.EntryPoint{Address: ":foo", TLS: &tls.TLS{}},
@@ -80,7 +99,11 @@ func TestNewEntryPointHandler(t *testing.T) {
 				require.NoError(t, err)
 
 				recorder := httptest.NewRecorder()
-				r := testhelpers.MustNewRequest(http.MethodGet, test.url, nil)
+				method := http.MethodGet
+				if test.method != "" {
+					method = test.method
+				}
+				r := testhelpers.MustNewRequest(method, test.url, nil)
 				handler.ServeHTTP(recorder, r, nil)
 
 				location, err := recorder.Result().Location()