Hello, im trying to connect websocket for using absinthe subscriptions, but i have a error in google chrome because of this header “Sec-WebSocket-Protocol”. There some way to pass a list of protocols in phoenix framework?

Check the subprotocols section of endpoint websocket docs: https://hexdocs.pm/phoenix/Phoenix.Endpoint.html#socket/3-websocket-configuration

How to set the “Sec-WebSocket-Protocol” header in Phoenix?

Phoenix Forum Questions / Help

entone July 28, 2020, 3:03pm 7

I’ve always just used Cowboy, which makes it simple enough to add custom headers to the socket. From some previous posts, I don’t think Phoenix exposes this functionality unfortunately.