asgi.py

#!/usr/bin/env python3

from fastapi import FastAPI, Request

app = FastAPI()


@app.get("/x")
async def test(req: Request):
    return str(req.base_url)


if __name__ == "__main__":
    import uvicorn

    uvicorn.run(app, host="0.0.0.0", forwarded_allow_ips="*")
    # equivalent to:
    # $ uvicorn --forwarded-allow-ips '*' --host 0.0.0.0 asgi:app
    # $ FORWARDED_ALLOW_IPS=* uvicorn --host 0.0.0.0 asgi:app

wsgi.py

#!/usr/bin/env python3

from flask import Flask, redirect, request
app = Flask(__name__)

# https://werkzeug.palletsprojects.com/en/latest/middleware/proxy_fix/
# https://flask.palletsprojects.com/en/2.0.x/quickstart/#hooking-in-wsgi-middleware
from werkzeug.middleware.proxy_fix import ProxyFix
app.wsgi_app = ProxyFix(app.wsgi_app)

@app.route("/")
def root():
    return redirect("/hello")

@app.route("/hello")
def hello():
    return "hello world: " + request.url


if __name__ == "__main__":
    # ./wsgi.py
    if __debug__:
        app.run(host="0.0.0.0", port=8000, debug=True)  # equivalent to: $ FLASK_DEBUG=1 flask run -h '' -p 8000
    # PYTHONOPTIMIZE=1 ./wsgi.py
    import bjoern
    bjoern.run(app.wsgi_app, "0.0.0.0", 80)