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'?

CodePudding user response：

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