Visual Studio :: The Underlying Connection Was Closed: A Connection That Was Expected To Be Kept Alive Was Closed?
Feb 3, 2011
I have created a webservice in 2010. And when I call it from my web application sometimes,It generates the follwoing errors:-1. The underlying connection was closed: A connection that was expected to be kept alive was closed by the server.2. Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.I have already tried increasing excutonTimeOut etc.
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Oct 14, 2010
This error stopping my work in my crucial time. The error is "The underlying connection was closed: The connection was closed unexpectedly.".There are multiple WCF service I created in my project. But when I am requesting only one service this error is coming. I compare with other service, no difference. The service works fine in the morning, but afternoon it stops working and raising error.
I installed Silverlight 3.0 Tools for 2008 Sp1, Silverlight 3.0 Developer, WCF RIA Beta and Silverlight 4.0 runtime in my system in the morning. After getting this error I uninstalled WCF RIA Beta. But same issue.Could not find any solution. Please assist me how to solve this issue.
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Nov 19, 2010
I have my wcf service and it runs fine. Then from my asp.net application I am trying to connect to this service. Everything is ok, request from asp.net is received in service (as I can debug code) and then when it returns to client I have the following error:underlying connection was closed: The connection was closed unexpectedlyMy contract on WCF service is as follows:
[OperationContract()]
WCFResponseGetAllProducts GetAllProducts(WCFRequestGetAllProducts request);
And WCFResponseGetAllProducts , WCFRequestGetAllProducts classes have [DataContract] attributes. Members of those classes have [DataMember] attribute. However when I added another method to my contract:
[OperationContract()]
int Test();
then I can execute it from asp.net mvc application without a problem.
PS. I host my wcf service in default web server in visual studio 2010 at the moment
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Sep 13, 2010
I'm using Visual Studio 2008, and my database is SQL Server 2000.
I want to add a connection to the Server Explorer in VS. The Data source is Microsoft SQL Server (SqlClient). After entering in all my information and I click Test Connection, it is successful.
But when I click OK, I get the error:
Unable to add data connection. ExecuteScalar requires an open and available connection. The connection's current state is closed.
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Oct 12, 2010
Im working with this Arquitecture : Web Service -> DLL(Xml Translator) -> Asp.net.Everything works fine, but,i have a process that takes about 23 minutes, in that time i show a "loading screen" that avoid the user to do anything, but after 20 mins while the web service is working and after debug my code, i get this error :
"The underlying connection was closed: The connection was closed unexpectedly"
Then, my "loading screen" keep visible until the web service completes the work, and after that, the "loading" hides and the web form shows my gridview empty.(its should show data).
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Nov 23, 2010
I'm getting the "The underlying connection was closed: The connection was closed unexpectedly." error while trying to POST using the HttpWebRequest class on the production server, on my dev machine it works fine.
I originally tried using the WebClient class but I switched to the HttpWebRequest to try some of the suggestions I found while researching the issue (such as setting KeepAlive to false, PreAuthenticate true and ProtocolVersion to 1.0).
Since it's only happening on the production server, i'm guessing that it might have something to do with IIS.
Here's my code
[Code]....
If set the Target Framework (I used a new project for testing) to 2.0 (I didn't test every version of the framework) it works. I'm guessing that .net handles the security differently in .net 4.0.
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Feb 26, 2011
I have a WCF service which has 4 Operation contracts.
I have added a new contract and it gets the data from database and returns the result set.
I can access the new contract and the service get the correct result set. But while passing the result set to the client I get the error of The underlying connection was closed: The connection was closed unexpectedly.
What are the steps to follow after adding a new contract like new binding etc.
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Oct 22, 2010
I'm receiving the following error occasionally when calling web service using a .NET 4.0 web application."The underlying connection was closed: An unexpected error occurred on a send."All of the articles I've read regarding this issue are for the Framework 1.1.Is there any solution to this issue for using .NET framework 4.0?
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Aug 23, 2010
I am consuming a third party web service wsdl using my .net aps.net page. And I am getting following error message. Cannt get to resolve it. Its working on my machine but not in my development machine. I have installed the certificate also in certificates on that machine.
Error --> The underlying connection was closed: An unexpected error occurred on a send.
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Jul 24, 2010
Suppose say I am doing a couple of operations.
First a delete and then an insert.
Now, these two operations are done with two different connections (say con1 and con2). Both these connections are enlisted in the same TransactionScope.
Before the delete/insert operations the connections are opened and immediately closed.
So, now if the insert fails, then how is the delete rollbacked since con1 has been closed?
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Feb 8, 2010
I have a Silverlight 3 application. It accesses WCF services that run on IIS. If I let the application sit for a while with no activity, it appears that I lose my connection to the server/login authentication, and my service calls fail.
It would appear that I am being logged out for security purposes, but this is not an area that I understand well. We are using a federated STS to create an encrypted token for security.
Can someone explain what is happening (if my description is clear enought), and how can I detect this event in my Silverlight application and redirect them back to the login page.
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Jul 2, 2012
I have a web application which runs perfectly in my local machine. But the same when hosted in server, for some pages (which gets large amounts of data) gives me:-
Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.-- in chrome
Server not found-- in firefox
and Internet Explorer cannot display the webpage-- in IE
I went through lot of other forums and some were suggesting to put this is web.config file
<httpRuntime executionTimeout="600" maxRequestLength="51200" />
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Apr 4, 2010
I am about to give up debugging SMTP servers to send email... My code is the following
SmtpClient mailClient = new SmtpClient("plus.smtp.mail.yahoo.com", 465);
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message.To.Add("aditya15417@hotmail.com");
message.Subject = "permias-tucson-contact-us";
mailClient.Credentials = new NetworkCredential("myemail@yahoo.com", "mypassword");
MailAddress fromAddress = new MailAddress(Email.Text, Name.Text);
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mailClient.Send(message);
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Aug 19, 2010
I'm getting a lot of these error messages in my logs on one of my servers and intermittently on two others.Googling didn't reveal very much information, mostly related to file uploads or downloads being interrupted. My pages are basically just text files with "ok" in them that only have .aspx extension for future plans, there's no actual code powering the pages. Servers are all Windows Server 2008 RC2 x64 running IIS7 / ASP.NET 4.Statistically it's happening well under 1% of the time but because of the volume of traffic that still clutters my event log with 2 or 3 of these messages per minute.Edit:tracked down the problem, setting buffering to true stopped it occurring.
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Apr 14, 2013
In my asp.net +vb+access web i have made a login page and the code is as under
Dim connectString As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:webauth.mdb"
Dim con As OleDbConnection = New OleDbConnection(connectString)
con.Open()
Dim cmd As New OleDbCommand("select * from Users where userid =@userid and Password=@password", con)
cmd.Parameters.AddWithValue("@userid", txtUserName.Text)
[Code] ....
I am getting error The connection was not closed. The connection's current state is open.
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Sep 4, 2010
I am using sql server fulll edition.any idea how should I solve this issue, I search on net but not found any helpful answer.
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Apr 20, 2012
{"Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host."}
I get the above error when sending email...
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Sep 30, 2010
I have VS 2010 professional. I am trying to open "ASP.Net Configuration" through Project -> ASP.Net Configuration.
It pops up the Notification about the ASP.Net Development Server localhost but doesn't open ASP.Net Configuration in the default browser.I clicked on the Root Url (by double clicking on the 'development server' at the right bottom from Notification Manager).
It throws following error
"An error was encountered. Please return to the previous page and try again."
Clicking on "How do i use this tool".It opened page with error.
Tool Has Timed Out
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Aug 28, 2010
From the last few days I am struggling with the error
"Failed to generate a user instance of SQL Server due to failure in retrieving the user's local application data path. Please make sure the user has a local user profile on the computer. The connection will be closed."
I hav created an asp.net web application with membership shcema. It works fine an my developement machine but when I published it on my web server.
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Apr 18, 2010
When I open an ASP.NET 3.5 project using VWD2010, I get a prompt error message,"The connection property in the web.config file is missing or incorrect.The connection string from the .dbml file has been used in its place."however, my project works successfully.
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Mar 8, 2011
string strURL = (Request.IsSecureConnection ? [URL] : [URL]
[code]....
I get an error on da line objPost.Close();.....the unusual error is that when I debug this code line by line slowly using F10 in visual studio 2010...the code works..but when I just run the program or even debug the program fast...it throws an error at that line.. it gives an error that the connection which was expected to be open was closed by the server..
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Jul 5, 2010
I have the following code using the TcpClient
byte[] encbuff = System.Text.Encoding.UTF8.GetBytes("username" + ":" + "password");
string follow = "track=soccer,twitter";
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[code]...
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Dec 4, 2010
i cant get connection with sourcesafe. when i search for sourcecontrol i get the connection wizard. But when i entering server name and path i got the message 'conneting to internet...' . No result after that.
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Mar 31, 2011
I used Data Connections to connect a database but couldn't make it.
1. I used Windows Authentication to log on to database, my database's name wasn't displayed in Select or enter a database name dropdown menu, so I enter my database's name then I pressed Test Connection button, it said "This connection can't be tested because the specified database doesn't exist or isn't visible to the specified user."
2. So I used SQL Server Authentication to log on to the server,then I put my database's name in Select or enter a database name dropdown menu box, then press OK it's said that "Login failed for user 'xxx' or Try to press Test Connection button it said that "Login failed for user 'xxx'.
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Jan 8, 2010
I am using LINQ to SQL in a project. I create a new DataContext class (a "DBML").
This is a DotNetNuke portal, module project. DNN has a standard connection string named "SiteSQLServer." Of course, I want my DataContext class to use this same connection string.
In Server Explorer in Visual Studio, I have a connection to the development database. Of course, that connection knows nothing of the "SiteSQLServer" connection string in web.config.
When I drag a table into the DBML design screen, I get a popup message that the table I'm dragging in is from a different connection, and is it OK if it changes the connection string? If I say "No," then the table never comes in to the designer. If I say "OK," then Visual Studio adds a new connection string to my web.config file. Then I must click in the open area of the designer, then go to the Properties window and reset the connection string. If I miss this, then in testing everything works. But when I deploy to a production server, the connection fails. But even if I do not miss this, that extra connection string remains in my web.config file.
Is there a way to get Visual Studio to drop the table into the designer, and leave web.config alone?
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