How to prevent Flask redirecting to the default port of 5000?

Question

I'm trying to run a Python sample for using Microsoft Graph. It uses Flask libraries for a mini-application that can be run using the Flask's standalone web server.

I've modified the application initialization line as

APP.run(port=9999)

And it starts running successfully at http://localhost:9999/, but then after a step, it redirects to http://localhost:5000 which is problematic.

If I change the initial part of the URL in my browser to http://localhost:9999 and hit ENTER, it continues to function as expected.

How can tell Flask to "redirect to the URL with the port number I declared in APP.run"?

Solution

Check config.py file, you have a route there with 5000 port

Comments

[Vivek Kalyanarangan]

thats weird. Can you show the initialization of the APP object? Also how are you running it?

[Emre Sevinç]

Everything is done in this single file: github.com/microsoftgraph/python-sample-send-mail/blob/maste‌​r/…

[Sudheesh Singanamalla]

After authentication where does the redirect callback return on the flask app? Did you configure graph to redirect on success to localhost:5000/login/authorized instead of :9999/login/authorized?

[Emre Sevinç]

So, this should be configured on Microsoft Graph side? Not only a Pyhton code configuration issue you mean?

[Sudheesh Singanamalla]

You need to configure the REDIRECT_URI on python side and on the Microsoft Graph settings for your application

[Emre Sevinç]

Indeed! One more thing learned about Microsoft Graph API :) Thanks!

[Emre Sevinç]

What's that with 3 Close Votes? This is certainly about programming. I'm referring to some Python code, and the answers include a change to that Python code, together with other changes in the comments. Why this is marked as off-topic, is a mystery to me! :(

[Emre Sevinç]

Changed that to 9999 and then I got from Microsoft side: "Sign in Sorry, but we’re having trouble signing you in. AADSTS50011: The reply address 'localhost:9999/login/authorized' does not match the reply addresses configured for the application: '9eea536f-ccdf-4472-94d8-7ca6acfea142'. More details: not specified"

[akrn]

You should configure your Microsoft Graph app to allow new redirect URL

[Emre Sevinç]

OK, I had to go to apps.dev.microsoft.com/#/application and change Redirect URLs to localhost:9999/login/authorized . I'll accept your answer.