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Q235611: IIS 3.0 May Stop Responding to Client Requests

Article: Q235611
Product(s): Internet Information Server
Version(s): winnt:3.0
Operating System(s): 
Keyword(s): kbtool
Last Modified: 08-MAY-2002

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The information in this article applies to:

- Microsoft Internet Information Server version 3.0 
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SYMPTOMS
========

Internet Information Server (IIS) 3.0 may stop responding to client requests,
making it necessary to stop and restart the IIS 3.0 services.

CAUSE
=====

When IIS 3.0 attempts to close a socket it first shuts down the connection,
notifying the client that it is closing its side of the connection. While in
this state, it is still possible for the client to continue to send data.
Currently, there is no time-out, creating the possibility for a misbehaving
client program to keep the connection's Web services open indefinitely. If this
occurs while IIS 3.0 is cleaning up the connection, all other client requests
are queued up. This eventually causes IIS 3.0 to stop responding to any client
request.

RESOLUTION
==========

A supported fix is now available from Microsoft, but it is only intended to
correct the problem described in this article and should be applied only to
systems experiencing this specific problem. This fix may receive additional
testing at a later time, to further ensure product quality. Therefore, if you
are not severely affected by this problem, Microsoft recommends that you wait
for the next Windows NT 4.0 service pack that contains this fix.

To resolve this problem immediately, contact Microsoft Product Support Services
to obtain the fix. For a complete list of Microsoft Product Support Services
phone numbers and information about support costs, please go to the following
address on the World Wide Web:

  http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS

NOTE: In special cases, charges that are normally incurred for support calls may
be canceled, if a Microsoft Support Professional determines that a specific
update will resolve your problem. Normal support costs will apply to additional
support questions and issues that do not qualify for the specific update in
question.

The English version of this fix should have the following file attributes or
later:

  Date      Time    Version      Size    File name     Platform
  -------------------------------------------------------------
  05/11/99  02:11p               130,320 Infocomm.dll  x86
  05/11/99  02:10p               222,992 Infocomm.dll  Alpha



STATUS
======

Microsoft has confirmed this to be a problem in Microsoft Windows NT 4.0.

Additional query words:

======================================================================
Keywords          : kbtool 
Technology        : kbiisSearch kbiis300
Version           : winnt:3.0
Hardware          : ALPHA x86
Issue type        : kbbug
Solution Type     : kbfix

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