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Remoting from WebService throws: An existing connection was forcibly closed by the remote host

Posted By: Posted Date: August 28, 2010 Points: 0 Category :.NET Framework

Hello everyone, I have a problem with using .NET remoting from webservice. When using remoting from console application, there is no problem. I suppose problem is somewhere in IIS. My system is Windows Vista. Thank you for any help. Best regards, Jozef

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I have a WCF consumed by a Windows Mobile 5.0 or above application with .NET Compact Framework 2.0 SP2 and C#.

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`An existing connection was forcibly closed by the remote host`

  Hi



I would like some assistance with this. I have a distributed application that uses TCP .NET Remoting for communication between the server and client computers. 



I am pretty sure the issue is network related because the application is currently running at multiple clients, it is running in instances where the UI on the client connects to the server over a TCP port over the internet. In this client's case, they have
 two sites in two different cities. The main site (where the server is located), the users connecting to the server are working fine. Even I can connect from my office if I connect via a VPN connection to their network. However, the other users from the other
 town, get the error "An existing connection was forcibly closed by the remote host" and their IT cannot seem to fix this.



Any ideas on how to fix this?



They've already done the following tests:

They can ping the server from the other site's computers 
They can get an open connection when attempting a Telnet session 
When using a sniffer to monitor the connection, they can see traffic flowing back and forth from the user machine to the server
On the firewall they have a

`Framework 2.0 changes - TCP Provider, error: 0 - An existing connection was forcibly closed by the r`

  If you connect to a server and open a query in SQL Managment studio (2005) and looses connection and then regain the connection, when you try to run the query it gives me a "TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host."
  
 This happens against both 2005 and 2000 servers.
  
 If I re-run the query it works.
  
 However, this happens in our VB.NET app as well for clients with Wireless connections.
  
 So, something has changed in Framework 2.0 regarding this, does anyone know how to tell the client to not throw this error and just try connecting the server instead which will work?

`The underlying connection was closed: Unable to connect to the remote server.`

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ÃÂ 
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ÃÂ 
Error:
ÃÂ 
8/2/2007 1:02:25 PM
The underlying connection was closed: Unable to connect to the remote server.
ÃÂ ÃÂ  at System.Net.HttpWebRequest.CheckFinalStatus()
ÃÂ ÃÂ  at Syst

`SOAP WebService Call error: The underlying connection was closed: A connection that was expected to`

  The underlying connection was closed: A connection that was expected to be kept alive was closed by the server..
 
We are trying to export some xml data to the client server using their web service, but we are receiving following exception
In some scenario when the connection take more than some expected time.
 
"The underlying connection was closed: A connection that was expected to be kept alive was closed by the server.."
 
 Remoting: Managing the Lifetime of Remote .NET Objects with Leasing and Sponsorship 
  Leasing and sponsorship is the solution for managing the lifecycle of a remote object in .NET. Each object has a lease that prevents the local garbage collector from destroying it, and most distributed applications rely upon leasing. There are several ways in which objects and clients can extend the lease, including dedicated sponsor objects. In this article, the author explains leasing, shows how to configure it, and how it relates to the various remoting activation models. He then discusses design guidelines and options, along with their impact on throughput and performance. Additionally, he introduces a helper class used to automate the management of lease sponsors.
Juval Lowy
MSDN Magazine December 2003

 The underlying connection was closed: An unexpected error occurred on a send. 
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Error -->  The underlying connection was closed: An unexpected error occurred on a send.


 
 


 

 

 A connection that was expected to be kept alive was closed by the server. 
  When  i want to Call 
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 How to Establish a Remote Web Site Connection in SharePoint Designer 2007 
  I am modifying a SharePoint site and so far so good.  Some of the objects were created using Visual Studio 2008 (C#).  I was able to modify these objects and implement them on the targete machine without issue.  The final step is to implement
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 Data access from Remote system throwgh  webservice 
  Hi,

i wrote the webservice and configured in our server and having access the service through the browser from another system also working fine, But i am trying to access the service through in my application creating the proxy and accessing methods of the webservice,
 but it can't get the data from  the remote sqlserver through the webservice.

   this is for my connection string  in  web config:

  <add key="ConnectionString" value="server=EVEREST;initial catalog=MRMv1;uid=sa;pwd=kk"/>



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Server was unable to process request. ---> Login failed for user 'sa'

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thanks and regards 
brite
 System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a rec 
  Hello Guys,         I am getting following exception while web service (ASMX) is returning the response.   <!-- [if gte mso 10]> <mce:style> 
System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive.     <!-- [if gte mso 10]> <mce:style> 
                                                    InnterException (System.IO.Exception): "Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host."
 
    I think either the Asp.net web server is closing the connection or the response is too long.
 
Following is my simple code. 
 
1)
 

namespace JFA.IndiePay.BusinessAccess
{
    public class VerTexProcessor
    {
        public DataSet ProcessVerTexForBatch(DataSet dsInputRequest)
        {
            DataSet dsResponse = new DataSet();

            //Call vertex web service here. 
            VertexService.Service texCalculator = new VertexService.Service();
            texCalculator.Timeout = 500000;
        
 Remote Connection Unavailable 
  Hello,
I am attempting to attach to my new Windows 2008 R2 SQL Server 2005 standard clustered remotely.  The firewall is temp off, remote connections in the surface area configuration is set to pipes and tcp/ip.  I have attempted to check the
 browser configuration but I can't find this.
I can attach to the sql server on my cluster but am unable to on a remote machine error is:
Cannot connect to clustered name\instance name
Addtional info
A network-related or instance-specific error occured while establishing a connection to sql server.  The server was not found or was not accessible.  Verify that the instance name is correct and the SQL Server is configured to allow remote connections.
Ideas?
Thx
-- 
Paul Bergson
MVP - Directory Services
MCITP: Enterprise Administrator
MCTS, MCT, MCSE, MCSA, Security+, BS CSci
2008, Vista, 2003, 2000 (Early Achiever), NT4
http://www.pbbergs.com    Twitter @pbbergs
Please no e-mails, any questions should be posted in the NewsGroup This
posting is provided "AS IS" with no warranties, and confers no rights.
 The underlying connection was closed: An unexpected error occurred on a receive 
  Hi All,
ÃÂ 
i have developed a web applicationÃÂ to callÃÂ WCF service (which is hosted inÃÂ IIS)ÃÂ from clientÃÂ application using .Net 1.1
it works fine.
ÃÂ 
but i gotÃÂ an error "The underlying connection was closed: An unexpected error occurred on a receive." when the return objectÃÂ is gettingÃÂ complex.
ÃÂ 
i analysis the issue with different level of object complexity and i found it get failed for following structure.
ÃÂ 
eg: 
ÃÂ 
ObjectA - outer object that has some primitive data types and the list of ObjectB
ObjectB - this also contain some primitive data and list of ObjectC.
ÃÂ 
Hope you can understand the hierarchy (complexity)ÃÂ of the return object.
This works up to 2nd level of object hierarchy.
ÃÂ 
Does anyone have idea about the solution for this exception?
ÃÂ 
Thanks in Advance
Shazvi
 Exception: "The underlying connection was closed: The connection was closed unexpectedly." (sometime 
  I haveÃÂ a windows app connecting to a webservice.ÃÂ ÃÂ InÃÂ some situation(s) (haven't narrowed it down enough), I get the following exception:
The underlying connection was closed: The connection was closed unexpectedly.
When this exception is thrown,ÃÂ it is calling a method of a web reference.
Now the situation that we experience this is on a laptop in the field that is using a WWAN connectionÃÂ in at least oneÃÂ location.ÃÂ  It works fine in the lab at the office.ÃÂ  Anyone have any ideas what could be causing this?


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