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Questions tagged [flask-cors]

A Flask extension for handling Cross Origin Resource Sharing (CORS), making cross-origin AJAX possible.

https://flask-cors.readthedocs.io/

82 questions
19
votes
3 answers

Flask-CORS not working for POST, but working for GET

I'm running a Flask-Restful API locally and sending a POST request containing JSON from a different port. I'm getting the error No 'Access-Control-Allow-Origin' header is present on the requested resource. However, when I run curl --include -X…
hatooku
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8
votes
8 answers

Python flask-cors ImportError: No module named 'flask-cors' Raspberry pi

I'm following the flask-cors tutorial from the documentation here: https://pypi.python.org/pypi/Flask-Cors but when i installed it on my raspberry pi and run my python app i'm getting this error Traceback (most recent call last): File "app.py",…
Nelson Candia
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8
votes
2 answers

zappa custom authorizer for flask with cors

I am using flask-cors for a aws python aws lambda API. I deployed it with zappa, it worked as intended. Yet cors does not work with custom authorizer inspired by…
Serge
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8
votes
1 answer

Getting CORS headers in a Flask 500 error

I've got a Flask app set up like this from flask import Flask from flask.ext.cors import CORS app = Flask( . . . ) app.debug = True CORS(app, allow_headers='Content-Type') CORS works correctly for routes that complete properly. However, if an…
Justin Dearing
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7
votes
3 answers

Why is Flask-Cors not detecting my Cross-Origin domain in production?

My website has a separate server for the front-end and back-end, and so my back-end server needs to open up CORS permissions so that the front-end can request data from it. I am using Flask-Cors successfully in development, but it doesn't work when…
mareoraft
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4
votes
3 answers

enabling CORS Google Cloud Function (Python)

Can use you flask_cors in Google Cloud Functions? app = Flask(__name__) cors = CORS(app) Locally this flask_cors package works but when deployed onto Cloud Functions it does not. I have tried many different ways, as GCP has suggested…
mdev
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4
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0 answers

Flask logs duplicate XHR CORS requests from Safari

Firstly, I'm not sure if this is a Flask or a Safari or a Flask-CORS issue. In order to emulate a production setting, I have a local Flask backend (API) on one domain and a front-end (SPA) on a different domain. I initially tried this with both the…
Karl Sutt
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4
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1 answer

Python Flask CORS - API always allows any origin

I've looked through many SO answers, and can't seem to find this issue. I have a feeling that I'm just missing something obvious. I have a basic Flask api, and I've implemented both the flask_cors extension and the custom Flask decorator…
sean
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4
votes
1 answer

Permitting CORS in Flask

I've a flask endpoint where I've permitted CORS in the following manner. app = Flask(__name__) CORS(app, resources={r"/api/*": {"origins": "*"}}) app.register_blueprint(store, url_prefix='/api/') I still run into the following issue. Response to…
Melissa Stewart
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4
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2 answers

Getting CORS error in angularJS front end

I am using a flask server with an angular front end. Up until recently, I was running the project on my local and had no issues. I now moved my project to a remote server and have been getting the following error. I am not sure what i'm doing…
galeej
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3
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1 answer

CORS request did not succeed in python flask-socketio

I need help in debugging -the Same Origin Policy disallows reading the remote resource at https://some-domain.com. (Reason: CORS request did not succeed) in python flask-socketio error. I am working on a chat application using python flask-socketio.…
VinothRaja
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3
votes
1 answer

Flask Cors isn't working

I'm trying to enable CORS in my Flask app, but it seems I can always access my urls from the browser whatever I put in the origins. I don't know what I do wrong. Here's my code from flask import Flask, jsonify from flask_cors import CORS app =…
Khaled Karam
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2
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0 answers

Configure specific headers for Preflight requests in Flask

I am working on a react Native front and a Python Flask backend. For my POST requests, I sometimes need to provide two additional headers: X-CSRF-TOKEN-ACCESS and X-CSRF-TOKEN-REFRESH for my authentication. However, my problem is I'm using…
Abilys38
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2
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1 answer

Response Header in python rest api and flask , flask cors

I have made an rest api on python with flask(port:5000), and i am making a get and a post request from a web site (port:80). I am getting the cors error, so i tried to create a response header in my rest api for the site. But i am getting the import…
Aristogiannis
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2
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1 answer

How to whitelist domain using Flask CORS

I am having some trouble getting Flask CORS to whitelist certain domains from being able to do a POST request. I am making a curl request from www.google.com but making the domain googl.com to confirm the post. Currently every single post is allowed…
learncodes123
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