WebSocket messages do not occur with a Zone

[matthewp]

ws.onmessage = function(){

};

If some behavior is completed within a websocket message this needs to be wrapped within the Zone.

[frank-dspeed]

is this the bug https://github.com/feathersjs/feathers-socketio/issues/81

they say zones can't handle socket.io in general.

[matthewp]

Yep, this is true.

[frank-dspeed]

as far as i understand For can-zone to work we have to override various task-creating functionality, this is the list of what we currently implement:

Macrotasks

setTimeout XMLHttpRequest Microtasks

requestAnimationFrame Promise process.nextTick

we need to implament socket.io here or i use a promis based socket io lib?

[matthewp]

I think the socket.io issue is because they do a recursive setTimeout. Without some heuristic to detect this I'm not sure that's fixable.

[matthewp]

Yes, using Zone.ignore will ignore any async tasks that are called within.

[frank-dspeed]

Current Workaround is

1. rendering head and body stache directly to html and disable done-autorender

   • pro: it works without SSR
   • con: Don't works with SSR

2. Use done-autorender without zones

   • https://github.com/donejs/autorender/pull/68 via done-autorender

3. use ignore Prototype from can-zone The issue is Zone related. The reason it is not rendering is because the Zone never completes and done-autorender waits for the Zone to complete. You can use Zone.ignore to ignore functions:

   
   var Zone = require("can-zone");
   var someFunctionThatCallsSetInterval = require("dep");

var ignored = Zone.ignore(someFunctionThatCallsSetInterval);

// Now you can safely call ignored() ignored()