ASP.NET

Re: Saving mail message in Drafts folder

30-Dec-08 3:55

AFAIK : You can only do it , if you have access of GMAIL WebServices

cheers,
Abhijit

kavitha_blueindia30-Dec-08 4:42

kavitha_blueindia

30-Dec-08 4:42

Hi Abhijit,

Can you please tell me how to find whether i have access or not ?

Thanks.

Re: Saving mail message in Drafts folder

Abhijit Jana30-Dec-08 4:46

30-Dec-08 4:46

Hope you will get some idea from This[^] article

cheers,
Abhijit

Http session issue

George_George30-Dec-08 2:32

George_George

30-Dec-08 2:32

Hello everyone,

I am interested in how load balaning handles Http user session. For example, suppose the amazon's online shopping application, thousands of backend servers.

Load balancer could keep the same user session on the same Http backend server, so that user shopping chart only resides on one server which the user initialially connects to, no need to keep shopping chart replicated on both servers. (I remember this feature called session affinity.)

How could load balancer recognize user session automatically? Any Http field indicate user session concept? I think there should be a general way to identify a user session, no need to program on load balancer to let load balancer know how to differentiate a user session for different application -- since differnet web application may have different ways to identify session concept.

thanks in advance,
George

Abhijit Jana30-Dec-08 4:06

30-Dec-08 4:06

George_George wrote:
I am interested in how load balaning handles Http user session

Its done Automatically. If you have multiple server in behind the Load Balancer , there should be VIP ( Virtual IP ) for accessing that Load Balancer, when user hits the load balancer, Load Balancer Give the original Server ID and then its passes it Layer 3 Switches, which switches the user to original server. and when the user next time hits load balancer automatic lay redirect to same server , because its maintain all the data for same session. This is General working way of NLB ( Network Load Balancer ) , but there are some S/W Load balancer , but I am not aware of there principal.

cheers,
Abhijit

George_George30-Dec-08 15:34

George_George

30-Dec-08 15:34

Thanks Abhijit,

Yes. I am talking about H/W load balancer.

1.

I am not quite sure about what do you mean "VIP ( Virtual IP ) for accessing that Load Balancer"? I think the end user accesses the Load Balancer directly, why you call it a virtual IP? Any more document for this?

2.

How does the server ID generated? By Load Balancer or by backend server?

3.

Server ID is kept in each request/response in the same user session, so that H/W load balancer could dispatch the user traffic to the same back-end server?

regards,
George

Abhijit Jana30-Dec-08 17:55

30-Dec-08 17:55

George_George wrote:
1.
I am not quite sure about what do you mean "VIP ( Virtual IP ) for accessing that Load Balancer"? I think the end user accesses the Load Balancer directly, why you call it a virtual IP? Any more document for this?

we can refers Virtual IP, when we are not specifying the actual source of server. Addressing of Load Balancer is an Example of that. Because there are several Server Behind the LB , but we are not specifying any particular IP of that server, rather we are giving a Virtual IP which will be converted to a a Real Server IP by the LB.
Read More[^]

For More Details on Load Balancing Please Read
How Network Load Balancing Technology Works[^]

cheers,
Abhijit

ASP Net Application on IIS 7 and Windows Server 2008 does not run

George_George3-Jan-09 21:50

George_George

3-Jan-09 21:50

Thanks Abhijit,

I take some time to read the documents you recommended twice, really good stuff! Especially the "How Network Load Balancing Technology Works".

1.

I have one more question, in a server cluster, all cluster nodes/hosts share a single virtual IP. I am wondering how could it be implemented? My confusion is, if more than one server have the same IP address, there will be IP address conflicting.

2.

I have a further question about client IP based affinity. Suppose a large number of clients are coming from the same IP (they access my web server through proxy server). For some other clients, they access the network individually. If this scenario, if the proxy IP is targetted to one single server, I think the network traffic is not trully balanced -- since traffic from the proxy IP is especially larger. Any comments or ideas for this issue?

regards,
George

obarahmeh30-Dec-08 2:24

Re: ASP Net Application on IIS 7 and Windows Server 2008 does not run

30-Dec-08 2:24

Dear All,
I have an Asp.Net application, which is run correctly in windows 2003, and also is run correctly when I run this application using Visual Studio 2008 through VS 2008 IIS.
But when I tried to run this application using windows 2008 IIS.7 , it gives me an error:
HTTP Error 500.22 - Internal Server Error
and guided me to change the application pool from DefaultAppPool to Classic .NET AppPool

I then changed the application pool as I've been guided, but another error appear is:

HTTP Error 403.18 - Forbidden
Links and More Information:
This error occurs if the application pool for the request does not exist, or if an ISAPI filter, ISAPI extension or HTTP module calls the ExecuteURL server support function (or ExecuteRequest) with a URL that is configured in a different application pool. Due to security reasons, a Web site in one application pool cannot make ExecuteURL requests against a URL in another application pool. If you have an application that is trying to process a URL in another application pool, ensure that they both run in the same application pool if appropriate.

I do not know what to do now, I looked for something talks about custome error pages and its application pool in the IIS.7, but I found nothing.

please help Frown | :(

Kind Regards
OBarahmeh

Abhijit Jana30-Dec-08 2:44

Re: ASP Net Application on IIS 7 and Windows Server 2008 does not run

30-Dec-08 2:44

Create your own Application pool and assign it to the web application.
I have written a complete article on IIS 7. Hope this will helps you
Deploying Web sites on IIS 7 and Windows server 2008[^]

cheers,
Abhijit

obarahmeh30-Dec-08 3:26

Re: ASP Net Application on IIS 7 and Windows Server 2008 does not run

30-Dec-08 3:26

I've created my own Application pool and assigned it to my application, but the problem still appear:

HTTP Error 500.22 - Internal Server Error
Things you can try: As the error message says:

1: Migrate the configuration to the system.webServer/modules section. You can do so manually or by using AppCmd from the command line - for example, %SystemRoot%\system32\inetsrv\appcmd migrate config "Default Web Site/". Using AppCmd to migrate your application will enable it to work in Integrated mode, and continue to work in Classic mode and on previous versions of IIS.

2: If you are certain that it is OK to ignore this error, it can be disabled by setting system.webServer/validation@validateIntegratedModeConfiguration to false.

3: Alternatively, switch the application to a Classic mode application pool - for example, %SystemRoot%\system32\inetsrv\appcmd set app "Default Web Site/" /applicationPool:"Classic .NET AppPool". Only do this if you are unable to migrate your application.

(Set "Default Web Site" and "Classic .NET AppPool" to your application path and application pool name)

Kind Regards
OBarahmeh

Abhijit Jana30-Dec-08 4:08

Re: ASP Net Application on IIS 7 and Windows Server 2008 does not run

30-Dec-08 4:08

Did you install IIS 7.0 after .NET Framework ?

cheers,
Abhijit

obarahmeh30-Dec-08 4:17

Re: ASP Net Application on IIS 7 and Windows Server 2008 does not run

30-Dec-08 4:17

No, because IIS.7 is contained in windows 2008 by default...and so, I've installed .Net framework after IIS.7 is installed

Kind Regards
OBarahmeh

Abhijit Jana30-Dec-08 4:40

Re: ASP Net Application on IIS 7 and Windows Server 2008 does not run

30-Dec-08 4:40

Did you try the suggestion that are given in with the error message ?

cheers,
Abhijit

obarahmeh30-Dec-08 4:54

30-Dec-08 4:54

Of course I tried that, butt still having the same problem

Kind Regards
OBarahmeh

alert message

ratnakar_ravi30-Dec-08 1:12

ratnakar_ravi

30-Dec-08 1:12

Hi,
I want display an alert message when user closes my web application how to do this
help me
thanks in adv

Brij30-Dec-08 1:33

Brij

30-Dec-08 1:33

in body tag put onunload="showmsg()"

showmsg is a javascript function as below

function showmsg()
{
// Check Browser Close [X] , Alt+F4 , File -> Close
if(window.event.clientX < 0 && window.event.clientY <0)
{
alert('your message');
}
}

Cheers!!
Brij

ratnakar_ravi30-Dec-08 1:59

ratnakar_ravi

30-Dec-08 1:59

thanks for your rply
but thius is not working

Abhijit Jana30-Dec-08 2:07

30-Dec-08 2:07

ratnakar_ravi wrote:
but thius is not working

Why ? From where did you call it ? Do you have mater page, if yes then call it from master page unload or if not then place it in every page unload. It should work !!!

cheers,
Abhijit

Brij30-Dec-08 2:10

Brij

30-Dec-08 2:10

ratnakar_ravi wrote:
thius is not working

Have you put it on body tag? whether javascript function is called.Can you bit detail about you page structure?

Cheers!!
Brij