Propagate Content-Type header if client sends it

selenoid.go

@@ -206,6 +206,10 @@ func create(w http.ResponseWriter, r *http.Request) {
 		r.URL.Host, r.URL.Path = u.Host, path.Join(u.Path, r.URL.Path)
 		newBody := removeSelenoidOptions(body)
 		req, _ := http.NewRequest(http.MethodPost, r.URL.String(), bytes.NewReader(newBody))
+		contentType := r.Header.Get("Content-Type")
+		if len(contentType) > 0 {
+			req.Header.Set("Content-Type", contentType)
+		}
 		ctx, done := context.WithTimeout(r.Context(), newSessionAttemptTimeout)
 		defer done()
 		log.Printf("[%d] [SESSION_ATTEMPTED] [%s] [%d]", requestId, u.String(), i)

selenoid_test.go

@@ -304,6 +304,30 @@ func TestSessionCreatedWdHub(t *testing.T) {
 	queue.Release()
 }
 
+func TestSessionWithContentTypeCreatedWdHub(t *testing.T) {
+	root := http.NewServeMux()
+	root.Handle("/wd/hub/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		r.URL.Path = strings.TrimPrefix(r.URL.Path, "/wd/hub")
+		AssertThat(t, r.Header.Get("Content-Type"), Is{"application/json; charset=utf-8"})
+		Selenium().ServeHTTP(w, r)
+	}))
+	manager = &HTTPTest{Handler: root}
+
+	resp, err := http.Post(With(srv.URL).Path("/wd/hub/session"), "application/json; charset=utf-8", bytes.NewReader([]byte("{}")))
+	AssertThat(t, err, Is{nil})
+	var sess map[string]string
+	AssertThat(t, resp, AllOf{Code{http.StatusOK}, IsJson{&sess}})
+
+	resp, err = http.Get(With(srv.URL).Path("/status"))
+	AssertThat(t, err, Is{nil})
+	var state config.State
+	AssertThat(t, resp, AllOf{Code{http.StatusOK}, IsJson{&state}})
+	AssertThat(t, state.Used, EqualTo{1})
+	AssertThat(t, queue.Used(), EqualTo{1})
+	sessions.Remove(sess["sessionId"])
+	queue.Release()
+}
+
 func TestSessionFailedAfterTimeout(t *testing.T) {
 	newSessionAttemptTimeout = 10 * time.Millisecond
 	manager = &HTTPTest{Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {