Comet (Push or Reverse Ajax) Support

Wikipedia: Comet is a programming technique that enables web servers to send data to the client without having any need for the client to request it.

It allows creation of event-driven web applications which are hosted in the browser.

Re: Comet (Push or Reverse Ajax) Support

scorpion4000

Wikipedia: Comet is a programming technique that enables web servers to send data to the client without having any need for the client to request it.

It allows creation of event-driven web applications which are hosted in the browser.

Can you suggest me how to use comet in asp.net?

Thanks

Re: Comet (Push or Reverse Ajax) Support

If you find any useful link or tutorial. Please let me know.

Thanks

Re: Comet (Push or Reverse Ajax) Support

i programmed a little webserver (with system.net.socket listening on port 8080) running in the global asp.net application which

is able to handle "long-live" -xmlhttp-requests and support connection-keep-alive (for a better performance).

on my site (mysite.com/chat/default.aspx) there is an iframe which opens (mysite.com:8080/connector.htm)

the connector.htm starts a xmlhttprequest and when the server responses (Push) the data

will be written into the cookies, because the default.aspx on port 80 can't access to the iframe on port 8080 (browser restriction)

the script on default.aspx checks the cookies every 50ms for new data.

my community chat is working fine with that solution.

Re: Comet (Push or Reverse Ajax) Support

I am currently trying to get a reverse ajax server working. I can't find any tutorials or guides, could you perhaps run through the steps to creating the web service and calling it from the client script?

I understand how to setup the web service, im just not sure how to keep the connection open indefinatly and then how to push the data back to the client?

Any help is much appreciated.

Regards

Adrian

Re: Comet (Push or Reverse Ajax) Support

A COMET based ASP .net grid

http://www.codeproject.com/KB/aspnet/CometMultiClient.aspx

Re: Comet (Push or Reverse Ajax) Support

You have a look at these:
http://biese.wordpress.com/2009/03/03/using-server-push-aka-reverse-ajax/

.net sample:
http://www.dotnetspider.com/resources/28131-Reverse-Ajax-Using-Hidden-IFrame.aspx

Re: Comet (Push or Reverse Ajax) Support

Use StreamHub Comet Server - they have a decent .NET API so you can stream data from .NET and read it the other side using JavaScript code.

Note: the features page says the .NET adapter isn't released - but it is - I've emailed them.

Re: Comet (Push or Reverse Ajax) Support

Use WebSync, a standards-compliant Comet server for the Microsoft Stack (IIS/C#/ASP.NET/etc). Simple integration with IIS (just 2 web.config lines) and simple access to events (before publish, after subscribe, etc etc).

There isn't a simpler or better Comet server for .NET users available.

Re: Comet (Push or Reverse Ajax) Support

Check PokeIn for powerfull .Net based DWR like comet support.