First big thing: don't use the built in web server in flask to do any heavy lifting. You should use a real web server like apache (mod_wsgi) nginex + gunicore, etc. These servers have documentation on how to run http and https simultaneously.

My I suggest trying out Flask-SSLify - https://github.com/kennethreitz/flask-sslify

Usage

Usage is pretty simple:

from flask import Flaskfrom flask_sslify import SSLifyapp = Flask(__name__)sslify = SSLify(app)

If you make an HTTP request, it will automatically redirect:

$ curl -I http://secure-samurai.herokuapp.com/HTTP/1.1 302 FOUNDContent-length: 281Content-Type: text/html; charset=utf-8Date: Sun, 29 Apr 2012 21:39:36 GMTLocation: https://secure-samurai.herokuapp.com/Server: gunicorn/0.14.2Strict-Transport-Security: max-age=31536000Connection: keep-alive

Install

Installation is simple too:

$ pip install Flask-SSLify

Now i want to run the server using both http and https is there any possible way to do that ??

I have had a similar problem recently. To test whether a proxy is used after http is redirected to https, I've just started two processes on different ports: one for http, another for https:

#!/usr/bin/env python3"""Serve both http and https. Redirect http to https."""from flask import Flask, abort, redirect, request # $ pip install flaskapp = Flask(__name__)@app.route('/')def index():    if request.url.startswith('http://'):        return redirect(request.url.replace('http', 'https', 1)                        .replace('080', '443', 1))    elif request.url.startswith('https://'):        return 'Hello HTTPS World!'    abort(500)def https_app(**kwargs):    import ssl    context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)    context.load_cert_chain('server.crt', 'server.key')    app.run(ssl_context=context, **kwargs)if __name__ == "__main__":    from multiprocessing import Process    kwargs = dict(host='localhost')    Process(target=https_app, kwargs=dict(kwargs, port=7443),            daemon=True).start()    app.run(port=7080, **kwargs)

Needless to say, it is only for testing/debugging purposes.