No need for case when only 2 conditions

CHANGELOG.md

@@ -14,6 +14,7 @@
 
 ## Changes since v3.2.0
 
+- [#180](https://github.com/pusher/outh2_proxy/pull/180) Minor refactor of core proxying path (@aeijdenberg).
 - [#175](https://github.com/pusher/outh2_proxy/pull/175) Bump go-oidc to v2.0.0 (@aeijdenberg).
   - Includes fix for potential signature checking issue when OIDC discovery is skipped.
 - [#155](https://github.com/pusher/outh2_proxy/pull/155) Add RedisSessionStore implementation (@brianv0, @JoelSpeed)

oauthproxy.go

@@ -646,14 +646,14 @@ func (p *OAuthProxy) OAuthCallback(rw http.ResponseWriter, req *http.Request) {
 // AuthenticateOnly checks whether the user is currently logged in
 func (p *OAuthProxy) AuthenticateOnly(rw http.ResponseWriter, req *http.Request) {
 	session, err := p.getAuthenticatedSession(rw, req)
-	switch err {
-	case nil:
+	if err != nil {
+		http.Error(rw, "unauthorized request", http.StatusUnauthorized)
+		return
+	}
+
 	// we are authenticated
 	p.addHeadersForProxying(rw, req, session)
 	rw.WriteHeader(http.StatusAccepted)
-	default:
-		http.Error(rw, "unauthorized request", http.StatusUnauthorized)
-	}
 }
 
 // Proxy proxies the user request if the user is authenticated else it prompts