From f4c08477d0f69d0259874f40af9b1bef3734b561 Mon Sep 17 00:00:00 2001
From: Michael Kohler <me@michaelkohler.info>
Date: Sun, 19 Apr 2020 14:04:10 +0200
Subject: [PATCH] Reject attemptAuth promise if no auth flow found

---
 spec/unit/interactive-auth.spec.js | 29 +++++++++++++++++++++++++++++
 src/interactive-auth.js            |  8 +++++++-
 2 files changed, 36 insertions(+), 1 deletion(-)

diff --git a/spec/unit/interactive-auth.spec.js b/spec/unit/interactive-auth.spec.js
index 46008b906..bf4e53138 100644
--- a/spec/unit/interactive-auth.spec.js
+++ b/spec/unit/interactive-auth.spec.js
@@ -143,4 +143,33 @@ describe("InteractiveAuth", function() {
             expect(stateUpdated).toBeCalledTimes(1);
         });
     });
+
+    it("should start an auth stage and reject if no auth flow", function() {
+        const doRequest = jest.fn();
+        const stateUpdated = jest.fn();
+
+        const ia = new InteractiveAuth({
+            matrixClient: new FakeClient(),
+            doRequest: doRequest,
+            stateUpdated: stateUpdated,
+        });
+
+        doRequest.mockImplementation(function(authData) {
+            logger.log("request1", authData);
+            expect(authData).toEqual({});
+            const err = new MatrixError({
+                session: "sessionId",
+                flows: [],
+                params: {
+                    "logintype": { param: "aa" },
+                },
+            });
+            err.httpStatus = 401;
+            throw err;
+        });
+
+        return ia.attemptAuth().catch(function(error) {
+            expect(error.message).toBe('No appropriate authentication flow found');
+        });
+    });
 });
diff --git a/src/interactive-auth.js b/src/interactive-auth.js
index eb0e25a51..18cad14b7 100644
--- a/src/interactive-auth.js
+++ b/src/interactive-auth.js
@@ -351,7 +351,13 @@ InteractiveAuth.prototype = {
                 error.data.session = this._data.session;
             }
             this._data = error.data;
-            this._startNextAuthStage();
+            try {
+                this._startNextAuthStage();
+            } catch (e) {
+                this._rejectFunc(e);
+                this._resolveFunc = null;
+                this._rejectFunc = null;
+            }
 
             if (
                 !this._emailSid &&