Re: Websockets on the IBMi

Nathan

Some other points of interest. There is normally a limit on the number of concurrent XHR connections the browser will allow. There appears to be no such limit with WS. Whether or not you see that as a good thing depends on what you want to achieve.

Also, with jWebsocket, you don't have to use the default TCP engine. It comes with NIO, Grizzly, Tomcat and Jetty also (maybe more, I need to check). I have only tested with the TCP and NIO engines thus far.

Kevin

On 13 Jul 2012, at 17:41, "Nathan Andelin" <nandelin@xxxxxxxxx> wrote:

From:"Dean, Robert"
That's why I really think something like Atmosphere is a better solution; it
abstracts the transport layer.The framework will negotiate that based on the
capabilities of both ends.

That may appear to be more convenient from a programming point of view. But it makes the assumption that XHR and WS are merely "transport layers" that can be used interchangeably, which may not always be true. Since XHR uses the traditional request-response cycle, the client may decide to change the next "request" based on the content of the "response", where WS just sends an acknowledgement that it received a response then continues to "listen".

This whole matter of XHR vs. WS would be settled for me if the XHR specification included an optional parameter that provided for NOT transmitting HTTP Headers in requests and responses. That way XHR would be essentially as efficient as WS, without needing to interface with a secondary WS server.

-Nathan.

--
This is the Web Enabling the AS400 / iSeries (WEB400) mailing list
To post a message email: WEB400@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/web400
or email: WEB400-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/web400.

NOTICE: The information in this electronic mail transmission is intended by CoralTree Systems Ltd for the use of the named individuals or entity to which it is directed and may contain information that is privileged or otherwise confidential. If you have received this electronic mail transmission in error, please delete it from your system without copying or forwarding it, and notify the sender of the error by reply email or by telephone, so that the sender's address records can be corrected.



--------------------------------------------------------------------------------


CoralTree Systems Limited
25 Barnes Wallis Road
Segensworth East, Fareham
PO15 5TT

Company Registration Number 5021022.
Registered Office:
12-14 Carlton Place
Southampton, UK
SO15 2EA
VAT Registration Number 834 1020 74.