Re: Websockets on the IBMi

I must admit that the technique you are describing is not one I have considered before for this sort of thing - it certainly seems to work.

I think the main difference is that it still is a request/response cycle, whereas with web sockets allow events to be pushed to the browser completely unsolicited by the browser. The server doesn't have to wait to be asked.

Whether or not you see that as a powerful thing probably depends on the problem you want to solve. If xhr does the job then I would stick with it. As Scott said, I won't be using web sockets to replace Ajax any time soon. Both ways have a practical use I think.


On 11 Jul 2012, at 23:42, "Nathan Andelin" <nandelin@xxxxxxxxx> wrote:

Are the things you are seeing just normal activity with any TCP/IP
socket connection?

I used a filter in Wireshark to filter out any traffic that was not specifically between my browser and http://jwebsocket.org

Filter: ip.dst == 83.169.11.55

Without a filter, it is shocking to see all the traffic that gets generated; some of which may be attributed to spyware that most of us download over the Internet.

No, I specifically compared the bytes transferred by the jwebsocket chat service to the service on my IBM i system, which uses XHR and simulate 4 chat clients.

http://www.radile.com/rdweb/temp/meet.html

With respect, maybe you are getting too bogged down
in the detail.

Well, okay. But I have an interest in meeting and broadcast services under HTTP and I want to know if Web Sockets is better than XHR.

With my web socket alternative, there is virtually no latency - ever.

You should try the chat simulator on my Web site. Persistent connections. No latency. No iterative polling. If I were implementing a CTI application like yours, I'd probably use the same technique.

So while waiting for a call, my browser is flooding the server with 600 HTTP requests per second.

I understand. That would be ridiculous. But I see a lot of that on the Internet.

-Nathan.

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