How to set the protocol (http, ws etc.) for the end-point using Jinja2 & url_for
Question:
I am trying to use the url_for(...) function in Python/Jinja2 to create an end-point for a web-socket.
How can I tell url_for(...) inside my template to use the ‘ws’ (web socket) protocol instead of ‘http’?
Answers:
The url_for has two attributes you can use for this purpose:
_external = True for generating absolute URLs_scheme = '' for setting an empty URL scheme (ws or wss is not supported directly)
After that, just put the ws: or wss: URL scheme string just before the url_for call in your template, e.g.:
wss:{{ url_for('websocket_endpoint', _external=True, _scheme='') }}
which will produce:
wss://yourdomain.com/websocket_endpoint
I am trying to use the url_for(...) function in Python/Jinja2 to create an end-point for a web-socket.
How can I tell url_for(...) inside my template to use the ‘ws’ (web socket) protocol instead of ‘http’?
The url_for has two attributes you can use for this purpose:
_external = Truefor generating absolute URLs_scheme = ''for setting an empty URL scheme (wsorwssis not supported directly)
After that, just put the ws: or wss: URL scheme string just before the url_for call in your template, e.g.:
wss:{{ url_for('websocket_endpoint', _external=True, _scheme='') }}
which will produce:
wss://yourdomain.com/websocket_endpoint