Solved

Closing web service client does not close connection - but can it be done manually?

Posted on 2012-03-15
2
435 Views
Last Modified: 2012-08-14
When I close my web service client (by calling .Close( )  ) it does not close the underlying socket connection on the server, but leaves it in a TIME_WAIT state:

 TCP    [::1]:64844            [::1]:65119            TIME_WAIT       0

This is not a bug, it is by design.  Under normal conditions, this is not a problem.  But when the application is scaled up, we begin to experience problems because new connections are not being released fast enough to accommodate the new web service method calls.

My research has indicated that the minimum time setting "clean up" old socket connections is 30 seconds.

We've also doubled the number of available connections.

For now the doubling of the connections seems to be alleviating the problem.

We understand that the web service seems to not be able close the connection manually.

My question is - how might we close the connection manually?


I know that the reason the connection will not close sooner than it does is because it is waiting for any packets that may arrive out of order.  And, the OS wants to ensure that a packet intended for a connection that is closed does not get processed by a connection that is still open.

That works for the OS, but it does not work for our needs.  We are writing the code so we know when the work is done and the connection can be closed.  If we could reduce the amount of time below 30 seconds - say down to 5 seconds - that might be an okay alternative.


I want to explore this as an option.
0
Comment
Question by:knowlton
2 Comments
 
LVL 25

Accepted Solution

by:
apeter earned 500 total points
ID: 37739970
Hope you are calling async. calls as much as possible to manange the connection problems.
0
 
LVL 5

Author Comment

by:knowlton
ID: 37740032
I can check on this.  The system has been in place for a while, so I would imagine this has been addressed at some point.
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This tutorial will show you how to add an attribute to an XML (http://en.wikipedia.org/wiki/XML) stream returned from a Windows Communication Foundation (http://en.wikipedia.org/wiki/Windows_Communication_Foundation) (WCF) Web Service.  Some knowled…
In previous Articles, we have discussed how we can upload a file using .asmx web service and isolated storage space. Here, in continuation to the topic, I am going to discuss how we can use WCF for the same purpose. Steps: 1.Create the silverli…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …

821 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question