Python Flask application duplicate HTTP requests

Question

I am working on a Flask web application, and encountering an issue concerning duplicate HTTP requests.

Every time a request is made, it is sent twice (for GET requests and POST requests as well), as can be seen on the screenshot below. I am running the application in production environment and with debug mode being "off".

How could I find out why the requests are being sent twice ?

EDIT:

The view functions are indeed being called twice every time a request is made. Any ideas ?

from flask import render_template


@product.route('/', methods=['GET', 'POST'])
@login_required
def index():
    print('Request to index.')
    products = Product.query.all()
    return render_template('product/index.html', products=products)

Hello Klaus, thanks for your feedback. How could I make sure if they are indeed sent twice or just being logged twice ? — Cheers
– Cheers, Commented Feb 15, 2020 at 10:13
Inspect the traffic with a tool like tcpdump, wireshark or tshark. — Klaus D.
– Klaus D., Commented Feb 15, 2020 at 10:32
Try to check the number of requests sent by inspecting the traffic through your browser's network console and share the response here — Saiprasad Balasubramanian
– Saiprasad Balasubramanian, Commented Feb 15, 2020 at 18:13

M. Rosenlof · Accepted Answer · 2020-04-23 23:00:27Z

4

Chrome sends an extra GET request for a favicon. Add this to the head of your html to stop this request

<link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon">

answered Apr 23, 2020 at 23:00

M. Rosenlof

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