How to obtain the caller's IP address in Flask/Connexion?

Question

I'm using an OpenAPI 3.0 specification (swagger.yml) and use Swagger Codegen to create the corresponding Python Flask application stubs. This is how I run the application to expose my Swagger API:

app = connexion.App(__name__, specification_dir='./swagger/')
app.app.json_encoder = encoder.JSONEncoder
app.add_api('swagger.yaml', arguments={'title': 'My Test API'})
# add CORS support to send Access-Control-Allow-Origin header
CORS(app.app)

So far so good. The application logic is handled within the generated Python stubs which are linked by the x-openapi-router-controller: swagger_server.controllers.user_controller .

I now however need to access HTTP Request specific information within the application itself to for example react differently based on the HTTP_CLIENT_IP address

How can I obtain that information within my controller endpoint?

Answer 1

Use Flask's request context.

For example, to get the HTTP_CLIENT_IP, use:

from flask import request

http_client_ip = request.remote_addr

You can read more about request here .

Answer 2

Attached two related links addressing the same issue on request header parameters and how connexion does not forward them to custom controllers. I ended up manually accessing them via

access_token = connexion.request.headers['access_token']