Eseményforrása
Eseményforrása, often referred to in English as "Event Source" or abbreviated as "ES," is a technology primarily used in web development to enable real-time data updates from a server to a client without the need for the client to poll the server repeatedly. It is defined in the HTML specification as part of the Server-Sent Events (SSE) protocol, which allows a web server to push updates to a single client over a persistent HTTP connection.
The SSE protocol operates on a simple push model, where the server sends data to the client
In practice, an event source is established by the client using the `<event-source>` HTML element or the
Eseményforrása is widely supported in modern web browsers and is considered a lightweight alternative to more