How to set header content-type text/event-stream?

You should always use the Response object that is in every controller to set the headers instead of setting them directly now. Something like:

Code:

$this->response->setHeader('Content-Type', 'text/event-stream');

By default - caching is turned off through the headers so you don't have to specify that. Unless changed it sets Cache-Control to no-store, max-age=0, no-cache.

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