1. I take it that if I initiate an AJAX request, it will not time out? It is up to the programmer to end an AJAX session?
Yes you would have to build a timer and cancel it with the abort() method. Leaving a connection open is the basis of COMET.
2. I tried sending two responses back through the same path, and got an error on page. Is there any way to leave the connection open for multiple responses? Or does a new request need to be initiated to accept a future response?
You can not do "socket" type of connections where you can just send data data and forth since we are dealing with http. You need to create a new connnection each time.
3. I've read that browsers only allow 2 active AJAX sessions. How do I assure that the ones I want are active? i.e. from the above - I might speculate that an AJAX session is closed when a response is returned. So as long as I do not initiate another request while two are in process, things should be peachy, right?
IE has always had the limit of two connections to the server at a time. To change that, you would have to edit the registry entry that controls that.You can really see the two connection restriction on IE when you are on dialup. How the images load sequentially down the page.
Firefox allows for more, faster fox extension changes the number.
One thin to point out is if you have two connections sitting there to the server, that means it is clossing it up for other things such as images. There are some ways around it for static content, but that is a different topic.
Eric
