Server-Sent Events
Web sockets are cool, but they require a different protocol and are really meant for two-way communication. If you just need to push data to the client from the server, you can use server-sent events, or SSE, which works over regular old HTTP.
To demonstrate this we’ll set up a very basic page that will display messages from our server. The web server available in the book’s example code already has support for SSE, so we’ll focus on the client-side implementation. Create a simple HTML page like this, with a place for the messages to display:
| where_next/html5_sse/index.html | |
| | <!DOCTYPE html> |
| | <html> |
| | <head> |
| | <meta charset="utf-8"> |
| | <title>AwesomeCo Messages</title> |
| | <link rel="stylesheet" href="stylesheets/style.css" ... |
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