Textbox typing lag when accessing AJAX method

[JM]

Hi,

I transferred an AJAX application to the server to be used across the
Internet. On my localhost, it works great. But when I transferred it to
the server, the user control freezes for a second or two whenever it
calls the AJAX method, including the textbox where the user inputs the
chat message. All it does is retrieve new messages from the server
every second. Please help if you have any idea to how to make the
textbox run smoothly, without lag when the user types.

Thanks

 

[Josh Mitts]

Are you using asynchronous calls, passing along an OnComplete and OnTimeout
method?

 

[JM]

Nope, I don't use OnComplete and OnTimeout. Any suggestion how I can fix
this problem? Thanks!!

 

[JM G]

Nope, I don't use OnComplete and OnTimeout. Any suggestion on how I can
fix this problem? Thanks!!!

 

[JM]

Nope, I don't use OnComplete and OnTimeout. Any suggestion on how I can
fix this problem? Thanks!!!

 

[Joshua Mitts]

Check out this page, it has an explanation of how to use OnComplete and
OnTimeout:

http://atlas.asp.net/quickstart/atlas/doc/services/default.aspx#simple

The idea is that you need to wait for the reply from the server in a
seperate thread (asynchronous), and using OnComplete and OnTimeout makes
that possible.

Also, I would look at your architecture...if you are building chat, you may
want to think about another design besides checking for new messages every
second. It may be the only way, especially if you want cross-browser
compatibility, but...something like a rich client control or ActiveX may
accomplish the job a lot easier, since they can use a dedicated socket
connection to get data from the server instantly.

 

[JM]

Thanks Josh. By the way, I am currently using AJAX.NET since we are
using .NET 1.1.

 

[sp3d2orbit]

AJAX.NET allows you to do asynchronous calls. If your call looks
something like this

var res = PageName.MethodName(param1, param2)

then you can make the same call asynchronous:

function MethodNameCallBack(res)
{
//do stuff
}

PageName.MethodName(param1, param2, MethodNameCallBack)

This will allow your page to load while waiting for the information
from the server. Also, if you're doing a lot of AJAX during a page load
you're obviously going to have a latency since each requires a trip to
the server. Try to initially load the page with as much information as
possible and limit AJAX calls to updates.

Best of luck,

Matt Furnari