Re: Websockets on the IBMi

[Aaron Bartell <aaronbartell@xxxxxxxxxxxxxxx>]

> But the overhead is not noticeable to humans; maybe a millisecond or two.

But multiply that by many hundreds of requests per client and it adds up.
 Depending on the app it might not be noticeable, but as soon as you get
into apps like GoogleDocs where you can have many people in the same
document and see each others changes in real-time, well, then the requests
to the server start adding up really fast.

That's just my take.

A brief search turned this up:
https://github.com/disconnect/apache-websocket/

Aaron Bartell
www.MowYourLawn.com/blog
www.OpenRPGUI.com
www.SoftwareSavesLives.com



On Wed, Jul 11, 2012 at 11:33 AM, Nathan Andelin <nandelin@xxxxxxxxx> wrote:

> Why would you need a separate server for Web Sockets? Why can't a Web
> Socket client connect to the IBM i HTTP Server? The Apache Server
> communicates via sockets. It supports persistent connections. Has anyone
> tried it?
>
> I don't see much difference between Web Socket and XMLHTTPRequest objects,
> except the latter carries some overhead in the form of request and response
> headers. But the overhead is not noticeable to humans; maybe a millisecond
> or two.
>
> -Nathan.
>
> From: Kevin Turner <kevin.turner@xxxxxxxxxxxxxxx>
> To: 'Web Enabling the AS400 / iSeries' <web400@xxxxxxxxxxxx>
> Sent: Wednesday, July 11, 2012 6:13 AM
> Subject: [WEB400] Websockets on the IBMi
>
> Has anyone else got anything working on the IBMi with regard to websockets?
>
> I have just completed the first phase of integrating Renaissance with a
> jWebsocket server on the i and so far so good. It seems to work pretty well
> - apart from the fact that I cannot get any life out of Safari.  Also, IE
> doesn't support websockets until IE10, so that uses a flash-bridge instead
> at the moment - but that works pretty well too.
>
> I picked jWebsocket (www.jwebsocket.org<http://www.jwebsocket.org>)
> because it is written in java and therefore runs almost straight out of the
> box on the i - and the client-side stuff provided links nicely with
> jQuery.  All I had to do was create my own plug-in for the server that
> makes use of jt400native.jar to enable data queues and direct calls.
>
> My only concern with the jWebsocket server is that it appears to have gone
> quiet.  No new beta versions since May this year.  I am wondering if I have
> backed the wrong horse for my first delve into this. This is the main
> reason for me canvassing feedback on what other people are up to with
> websockets.
>
> For anyone interested, there is a noddy demo function available at
> http://rns.coraltree.co.uk on the Developers Examples and Demos menu
> (user id and password both "demo") that I have been using to test things.
> The demo is not very exciting (until you appreciate the avenues that
> websockets opens up for you).  Most of the time the jWebsocket server is
> active but I occasionally shut it down while testing.
>
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