Stucked with System.Net.Sockets.SocketException - ASP.NET Discussion Boards

ok
i will send it as a text.but how it will run. or execute.
and where i will defined the location for creating the tables.
thanx

Hi guys,
I have an interesting scenario. I have a web application created with asp.net 2005. There will be more users who will be using my web application. User's can use the login page to log in to the application and use sign out to logoff the application. My question is :- if for example a user from a machine 1 with an ID "Shankar" has signed into the application by providing the correct credentials and the same user is signing into the application with the same credentials, but this time from a differant machine. How should i prevent this from happening. Please help me out of this problem.

Regards
Shankar

Hi,

Follow the below link. It ll guide you towards the solution.

http://www.aspfree.com/c/a/ASP.NET/Preventing-Simultaneous-Logons/3/[^]

Regards,

Jay

check the ip address when signing in

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

1 line of code equals many bugs. So don't write any!!

My mad coder blog

I don't think the IP is the way to go. (due to NAT, etc..) The IP is unreliable.

yes, and due to the architecture of the web. Knowing the actual computer ID is unreliable also.

But you can still trace the IP to the origination IP. It all depends on how much effort you want to use.( there are tons of utilities that can trace this) But, using whois you can trace down the ISP and they usually use the same patterns for IP's.

I was on a spam rampage and I can trace anyone back to thier orignal IP that the email was sent from. Even if its sent within IP hider types. And if this tells me thier ip location, so will the requesting machine.

all you really need is the ISP server name and a few other bits which are inside the request header. Everything is traceable. There maybe hurdle, but tons of sites in the UK tell you how to get past anyone of them.

IP or a mac address is your best bet. But, last time i looked at a header the mac address wasn't there. And due to security you wont be able to get it, unless you create an active x control to run on your page. Much like AJAX.

Nick

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

1 line of code equals many bugs. So don't write any!!

My mad coder blog

Shankar

We had the same sort of functionality in our application and we are storing ip, flag , domain name and checking with or conditions. If any conditions return true value we display message to user. But I am not sure how flexible you are for changing your application design,

Amit

Hi,

We are using MySql Connector 1.0.7, .Net Framework 1.1 and MySql 4.0.12. We are getting following error very frequently.

To resolve this error we have also changed our hosting server which is of .Net Framework 2. So error is occurring for both Framework 1.1 and 2.

But still we are stucked with it.

///////////////////////////////////////////////////////////////////

Server Error in '/' Application.
A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied

Stack Trace:

[SocketException (0x2749): A request to send or receive data was disallowed because the socket is not connected and (when sending on a datagram socket using a sendto call) no address was supplied]
System.Net.Sockets.Socket.Shutdown(SocketShutdown how) +1005764
MySql.Data.Common.SocketStream.Read(Byte[] buffer, Int32 offset, Int32 count) +68
System.IO.BufferedStream.ReadByte() +103
MySql.Data.MySqlClient.PacketReader.ReadHeader() +16
MySql.Data.MySqlClient.PacketReader.OpenPacket() +119
MySql.Data.MySqlClient.NativeDriver.Open() +653
MySql.Data.MySqlClient.MySqlConnection.Open() +142
System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +121
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +137
System.Data.Common.DbDataAdapter.Fill(DataSet dataSet) +86
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061

///////////////////////////////////////////////////////////////////

Is there anyone who can get me out of this problem ?

Thanks in advance.

Hi Friends,

I have a ASP.NET application that stores session information in Shared class, now everytime a new user comes the old users session information is written by the new user information. I understand thats how Shared variables work, but what app domains? can't we use app domains to isolate each user.

Any hints will be highly appreciated......

ThX in advance
Amit

AppDomains has no bearing on your problem what so ever.

The Session object has a collection that you can use to store user specific data. Example:

// store a value<br />
Session["userid"] = 42;<br />
<br />
// retrieve a value<br />
int userId = (int)Session["userid"];

---
b { font-weight: normal; }

Hi,

you can use either of the

Session Variables
or
Coockie

Hope this works

Nitin...

Perhaps you should reply to the original poster instead. Smile | :)

---
b { font-weight: normal; }

Hi,

I guess i was not able to make myself clear, here is what i meant
There is a class that has userName and Password properties

Public Class A

Property UserName as string()
Get End Get
Set End Set
End Property

Property Password as String()
Get End Get
Set End Set
End Property

End Class

This class in used in another class as variable
Public Class B

Public Shared objUser as ClassA

End Class

Now when user logs on login page these properties are set liek this
ClassB.objUser.UserName="XYZ"
ClassB.ObjUser.Password="XYZ"

and now when another user logs in the same variables got reset like this
ClassB.objUser.UserName="ABC"
ClassB.ObjUser.Password="ABC"

Thats what i want to avoid, i know this is flaw in design but the application is already been developed and deployed and therefore i want to avoid the rework.

Any Suggestions welcome
Thx
Amit

You have deployed a multi user application that only supports a single user? Nice... Wink | ;)

You have to change the way you store the values to make it work. As you already have noticed, a static (shared in VB) variable only exists once throughout the application.

You could keep track of the separate values for each user on your own, but why not use the Session object when it is intended for this?

---
b { font-weight: normal; }

any body can tell is there any function by which i can measure the bandwidth

usage by user.

i found that there are some tools which provide this Facility.

but how can i achieve by myself.

plz guide me

any suggestion.

thanx

Hi every1

I want to know if i am not mentioned session timeout in my web.config file,then what will be effect on my application?

My second question is:I have mentioned session timeout as 20min in web.config file.I am accessing my application but after every 20min it gives an error "session expired".My system is not ideal.For my point view session is expired when system is ideal but my application is not ideal.What is the options for that?I am using InProc state.
If u have any solution,pls reply me.

Thanks
monika

monika_vasvani wrote:
I want to know if i am not mentioned session timeout in my web.config file,then what will be effect on my application?

Then the timeout is used that is specified for the web application. This is usually 20 minutes.

monika_vasvani wrote:
I have mentioned session timeout as 20min in web.config file.I am accessing my application but after every 20min it gives an error "session expired".My system is not ideal.For my point view session is expired when system is ideal but my application is not ideal.What is the options for that?I am using InProc state.

Your system is ideal? I think that you mean idle... Wink | ;)

Make sure that you are using sliding expiration.

Also, the web server is only aware of you when you are requesting a page from the server. If you don't request any pages, you are idle as far as the server is concerned.

---
b { font-weight: normal; }

This case if differs between different .Net Versions.

In .Net 2.0, By Default the "timeout" attribute value is 30 minutes. ( 20 min in .Net 1.1)

And also the "SlidingExpiration" attribute's Default Value is "False". ("True" in Version 1.1).

Regards,

Jay

Hi
Thanx for yr Reply.But what is SlidingExpiration? and where it is declared?
If I set SlidingExpiration to false,then what happened?If I set SlidingExpiration to true,then what happened?where I set this property to true or false?Pls reply me immidiately.Becoz I am in deadline.

Thanks
monika

This will help you out in that:
http://msdn2.microsoft.com/en-us/library/1d3t3c61.aspx[^]

Best Regards,
Apurva Kaushal

The authentication cookie is refreshed and time to expiration is resets on your subsequent request when SlidingExpiration is set to TRUE.

It is a attribute in 'forms' tag in your web.config file. (Forms authentication)

Regards,

Jay

Hi
Thanx I got yr ans.But I am little bit confused about this.I have entered lots of data in my application. After 30min, i have clicked on button for save this data in database but at that time I got an error "session expired".
My question is if my page is not go to server side for request means i am working on client side then SlidingExpiration is working perfectly?If i set it to true in form authentication.or any other other option?I want option which will be working perfectly for server and client side code.Pls reply me.

Thanks
monika

Have u gone through the link given by Apurva Kaushal?

After 30 min, the Session has expired. It works fine & Correct.

Dont confused about Client Side or Server side. If you are using 'Cookies', the Cookie will retain its session values only 30 min (Cookie is stored in Client system only). This 30 min given in 'SlidingExpiration' attribute.
Cookie is expired after 30 min., the time the last request was received.

U know web is stateless. The server understands the Request from single user (Browser) by Session ID only.After the Cookie expires, for example, if u submit the Web Page, then the server cant able to idetify you (Session ID expired).So it gives "session expired" warning. You need to login again.

Have got it !!

Regards,

Jay

i have a dateset with value of 0 and 1,
i want bind the dataset to gridview with checkboxfiled,
in dataset all value are strings so it give error
i use bool.Parse(bool.TrueString) comment for boolen value but it gives the error

how to bind dataset with gridview

mohamad rafi

If you are having problem in handling it directly then use onitemdatabound event for that purpose.
Or Here[^] you will get lots of stuff on gridview control.

Best Regards,
Apurva Kaushal