pyCors

A Python Flask-based proxy adding Access-Control-Allow-Origin to all responses. A fork of cors-proxy with the added feature of being deployable via docker, allowing you to define Origins via environment variables, and allowing you to set Access-Control-Allow-Credentials to true via environment variables (default remains false). Can be found on DockerHub.

Instructions

Can be run from either docker or docker-compose.

For docker-compose: Set up your docker-compose.yml file to include pycors, for example:

services:
  pycors:
	container_name: pycors
	image: heyitsjono/pycors:latest
	ports:
  	+ 5757:5000
	environment:
  	+ ALLOW_ORIGIN=http://URL1,https://URL1,http://URL2
  	+ ALLOW_CREDENTIALS=false
	restart: unless-stopped

Set ALLOW_ORIGIN to one origin (the IP/URL making the request to the pycors), or a comma-delimited list of origins. Alternatively, you can also set ALLOW_ORIGIN to * to allow requests from any origin. By default, ALLOW ORIGIN is not set to any value, in other words by default Access-Control-Allow-Origin will not be set to any value.

Set ALLOW_CREDENTIALS to true to enable Access-Control-Allow-Credentials, by default this is disabled.

From there just run docker-compose up -d pycors.

You should then be able to make requests tohttp://127.0.0.1:5757/<URL> for any URL and any HTTP method. The response content and return code will be returned to your service with the above Access-Control-Allow-Origin/-Credentials defined in the environment variables set.

For example: Access https://jsonplaceholder.typicode.com/posts with http://127.0.0.1:5757/https://jsonplaceholder.typicode.com/posts.