Configured to run behind reverse proxy, using Gunicorn

flaskr/__init__.py

@@ -1,5 +1,6 @@
 import os
 from flask import Flask
+from werkzeug.middleware.proxy_fix import ProxyFix
 
 def create_app(test_config=None):
     # create and configure the app
@@ -9,6 +10,10 @@ def create_app(test_config=None):
         DATABASE=os.path.join(app.instance_path, 'flaskr.sqlite'),
     )
 
+    app.wsgi_app = ProxyFix(
+        app.wsgi_app, x_for=1, x_proto=1, x_host=1, x_prefix=1
+    )
+
     if test_config is None:
         # load the instance config, if it exists, when not testing
         app.config.from_pyfile('config.py', silent=True)