Trying to use Faye with Rack app.
Server:
Faye::WebSocket.load_adapter 'thin'
app = Rack::Builder.new do
use Rack::CommonLogger
use Rack::ShowExceptions
use Faye::RackAdapter, mount: '/ws', timeout: 5 do |bayeux|
bayeux.on(:subscribe) {|id, channel| p "subscribe #{id} #{channel}"}
bayeux.on(:publish) {|id, channel, data| p "publish #{id} #{channel}
#{data}"}
end
run ->(env) do
if Faye::WebSocket.websocket?(env)
ws = Faye::WebSocket.new(env)
ws.on :message do |event|
ws.send(event.data)
end
ws.on :close do |event|
p [:close, event.code, event.reason]
ws = nil
end
# Return async Rack response
ws.rack_response
else
return FREST::HTTP.normal_web(
context: context,
env: env
)
end
end
end
Rack::Handler.get('thin').run app, Port: 8080
client:
(function(){
window.onload = () => {
var js = document.createElement("script")
js.src = "/ws/client.js"
js.onload = () => {
document.client = new Faye.Client('http://localhost:8080/ws')
document.client.subscribe('/test', (m) => {
console.log(m)
})
.then(console.log("Subscribed!"))
}
document.head.appendChild(js)
}
})()
>From browser console:
c = document.client
c.subscribe('/test', (m) => {document.body = m}).then(() =>
{console.log('Then!')}, (e) => {console.log("Error!" + e.message)})
Error!Unknown client
Possibly noteworthy:
- every time I do anything with the client, I have a different client_id
- if I monitor handshake, that gets called repeatedly multiple times per
second, although it’s not from the line in my onload.
- I’ve tried setting RACK_ENV=production but this does not help
Digging into the Unknown Client in the Faye source code, it appears to arise
because the client_id sent with the request is not recognized. So I think it’s
something like I’m closing and reopening the connection repeatedly for some
reason.
Maybe?
Dunno. Any thoughts?
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