That looks to be a typo in the release notes. "Server sent events" is a specific server-> client HTTP communication mechanism. The Network DevTools already sh

That looks to be a typo in the release notes. "Server sent events" is a specific server-> client HTTP communication mechanism. The Network DevTools already showed standard AJAX requests, and support for showing messages sent over websockets was recently added. This adds support for another mechanism that was not previously displayed: https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events https://developer.mozilla.org/en-US/docs/Web/API/Server-sent...