Flask SSL Sample APP

flask_ssl_app.py

from flask import Flask
from flask_sslify import SSLify

"""
Option 1 : (pip install pyopenssl)
from OpenSSL import SSL
context = SSL.Context(SSL.SSLv23_METHOD)
context.use_privatekey_file('web.key')
context.use_certificate_file('web.crt')

Option 2 : (OOB : No install)
import ssl

context = ssl.SSLContext(ssl.PROTOCOL_TLSv1_2)
context.load_cert_chain('web.crt', 'web.key')

Option 3 : Native Flask (No imports needed)
"""

app = Flask(__name__)

context = ('web.crt', 'web.key')
sslify = SSLify(app)

@app.route("/")
def hello():
    return "Hello World!"

if __name__ == "__main__":
    context = ('web.crt', 'web.key')
    app.run( debug = True, ssl_context = context)
    #app.run( debug = True, ssl_context = 'adhoc')  # Generate Adhoc Certs

Just want to note that if anyone's having issues loading the .crt and .key files and they had converted them from .pem files, it's possible the conversion wasn't necessary - it wasn't in my case (running on diet-pi using letsencrypt/certbot to gen keys) and in fact threw the following error:

OpenSSL.SSL.Error: [('PEM routines', 'get_name', 'no start line'), ('SSL routines', 'SSL_CTX_use_PrivateKey_file', 'PEM lib')]

when I use ssl_context = 'adhoc', everything runs but it doesn't show anything in the web browser. (it shoows in the terminal that it's running at https but doesn't work in the webbrowser) Any suggestion?

I have same problem as @antoniojsp , did you find a solution?

I'm having the same problem @antoniojsp @omarnazih
Any answers?

Tengo el mismo problema, alguna solución?