December 2014
Intermediate to advanced
434 pages
9h 48m
English
Content preview from Java EE 7 Development with WildFlyBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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How do WebSockets work
To initiate a WebSocket session, the client must send an HTTP request with an Upgrade: websocket header field. This informs the server that the peer client has asked the server to switch to the WebSocket protocol.
Note
You may notice that the same happens in WildFly for Remote EJBs; the initial connection is made using an HTTP request, and is later switched to the remote protocol thanks to the Upgrade mechanism. The standard Upgrade header field can be used to handle any protocol, other than HTTP, which is accepted by both sides (the client and server). In WildFly, this allows you to reuse the HTTP port (80/8080) for other protocols and therefore minimise the number of required ports that should be configured.
If the server ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.