FIX: An RST packet is sent unexpectedly from a TCP server that runs on a Windows Embedded Compact 7-based device after a socket connection is closed

Consider the following scenario:

• You have a Windows Embedded Compact 7-based device that is running a Transmission Control Protocol (TCP) server application.
• You have another device that is running a TCP client application.
• A socket connection is closed by the TCP server application.

In this scenario, the server sends a TCP reset (RST) packet instead of the expected TCP FIN packet to the client. Additionally, this may cause a socket error (SocketException) on the client device.

Note A typical TCP session teardown should consist of the server and client exchanging TCP FIN packets.

This issue occurs because the TCP/IP protocol driver in Windows Embedded Compact 7 does not perform correctly. Therefore, a RST packet is forced to be sent instead of the expected TCP FIN packet.

Software update information

A supported software update is now available from Microsoft as Windows Embedded Compact 7 Monthly Update December 2011. In the "File information" section, the package file name contains the processor type.

Note This Windows Embedded Compact 7 Monthly Update is available for download from the following Microsoft Download Center website:

Prerequisites

This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

• On the Build menu, click Clean Solution, and then click Build Solution.
• On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this software update package has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Files that are included in this update package

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base: