A simple app for proxying requests with CORS support. Map any domain to any URI as a base path, or, use a dedicated endpoint for proxying any URI.
git clone https://github.com/okfn/gobetween.git
npm install
npm start
We've now got a server running. By default, 127.0.0.1 is setup to proxy google.com in the DOMAIN_MAP, and additionally localhost is the BASE_DOMAIN which allows you to use the /pipe/ endpoint to proxy any URI.
Go to 127.0.0.1:3000/. You should see google.com.
Go to localhost:3000/pipe/https://raw.githubusercontent.com/dataprotocols/schemas/master/data-package.json. you should see https://raw.githubusercontent.com/dataprotocols/schemas/master/data-package.json.
Domains to proxy are configured via the DOMAIN_MAP environment variable, which is an array of mapping between front facing domains, and the domains or URI paths they proxy.
By default, , is the delimiter symbol (DELIMITER_SYMBOL) for values in this array, and == is the assignment symbol (ASSIGNMENT_SYMBOL).
Here is an example of a real configuration:
DOMAIN_MAP:schemas.datapackages.org==https://raw.githubusercontent.com/dataprotocols/schemas/masterBASE_DOMAIN:gobetween.oklabs.org
This configuration exposes gobetween.oklabs.org/pipe/{URI_TO_PROXY} as the file proxy, and schemas.datapackages.org serves up whatever files it can find under the https://raw.githubusercontent.com/dataprotocols/schemas/master path.