New Client Connectivity Detection Feature in ServerSupportFunction()

ID: Q188346

The information in this article applies to:

Microsoft Internet Information Server version 4.0

SYMPTOMS

Currently, there is no API to detect whether or not a client is connected for ISAPI applications.

RESOLUTION

The HTTP Server Extension request type (dwHSERRequest) in ServerSupportFunction() has been extended to include HSE_REQ_IS_CONNECTED, which can be used to detect whether or not a client is connected. The ServerSupportFunction() returns TRUE if the client is connected; otherwise, FALSE is returned. A new header file (Httpext.h) is required for developers to use this new feature in writing the ISAPI applications.
A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem. If you are not severely affected by this specific 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 on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

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


   Date      Time                 Size    File Name     Platform
   -------------------------------------------------------------
   12/18/98  02:46p                27,696 admwprox.dll  (x86)
   12/18/98  02:48p               327,472 asp.dll       (x86)
   12/18/98  02:46p                43,456 coadmin.dll   (x86)
   12/18/98  02:47p                11,168 ftpctrs2.dll  (x86)
   12/18/98  02:47p                81,376 ftpsvc2.dll   (x86)
   12/18/98  02:47p                55,392 httpodbc.dll  (x86)
   12/18/98  02:46p                10,224 iisfecnv.dll  (x86)
   12/18/98  02:46p                61,920 iislog.dll    (x86)
   12/18/98  02:46p                16,848 infoadmn.dll  (x86)
   12/18/98  02:46p               184,208 infocomm.dll  (x86)
   12/18/98  02:46p                 9,584 infoctrs.dll  (x86)
   12/18/98  02:46p                47,936 isatq.dll     (x86) 
   12/18/98  02:46p                29,520 iscomlog.dll  (x86)
   12/18/98  02:47p                11,248 iwrps.dll     (x86)
   12/18/98  02:46p                13,856 lonsint.dll   (x86)
   12/18/98  02:46p                 8,336 lonsiw95.dll  (x86)
   12/18/98  02:46p                71,232 metadata.dll  (x86)
   12/18/98  02:46p                 7,488 rpcref.dll    (x86)
   12/18/98  02:46p                12,592 spud.sys      (x86)
   12/18/98  02:46p                18,032 svcext.dll    (x86)
   12/18/98  02:47p                14,752 w3ctrs.dll    (x86)
   12/18/98  02:47p               227,424 w3svc.dll     (x86)
   12/18/98  02:47p                87,504 wam.dll       (x86)
   12/18/98  02:01p                11,396 httpext.h     (x86)

   12/18/98  02:48p                49,424 admwprox.dll  (Alpha)
   12/18/98  02:50p               548,112 asp.dll       (Alpha)
   12/18/98  02:48p                77,072 coadmin.dll   (Alpha)
   12/18/98  02:50p                17,168 ftpctrs2.dll  (Alpha)
   12/18/98  02:50p               126,224 ftpsvc2.dll   (Alpha)
   12/18/98  02:49p                89,360 httpodbc.dll  (Alpha)
   12/18/98  02:49p                17,680 iisfecnv.dll  (Alpha)
   12/18/98  02:49p               110,864 iislog.dll    (Alpha)
   12/18/98  02:49p                25,872 infoadmn.dll  (Alpha)
   12/18/98  02:49p               302,864 infocomm.dll  (Alpha)
   12/18/98  02:49p                15,120 infoctrs.dll  (Alpha)
   12/18/98  02:48p                82,704 isatq.dll     (Alpha)
   12/18/98  02:49p                45,840 iscomlog.dll  (Alpha)
   12/18/98  02:49p                16,656 iwrps.dll     (Alpha)
   12/18/98  02:48p                23,312 lonsint.dll   (Alpha)
   12/18/98  02:48p                13,584 lonsiw95.dll  (Alpha)
   12/18/98  02:48p               131,856 metadata.dll  (Alpha)
   12/18/98  02:48p                12,048 rpcref.dll    (Alpha)
   12/18/98  02:49p                20,912 spud.sys      (Alpha)
   12/18/98  02:49p                29,456 svcext.dll    (Alpha)
   12/18/98  02:49p                21,264 w3ctrs.dll    (Alpha)
   12/18/98  02:49p               381,712 w3svc.dll     (Alpha)
   12/18/98  02:49p               149,264 wam.dll       (Alpha)
   12/18/98  02:01p                11,396 httpext.h     (Alpha)

NOTE: If this product was already installed on your computer when you purchased it from the Original Equipment Manufacturer (OEM) and you need this fix, please call the Pay Per Incident number listed on the above Web site. If you contact Microsoft to obtain this fix, a fee may be charged. This fee is refundable if it is determined that you only require the fix you requested. However, this fee is non-refundable if you request additional technical support, if your no-charge technical support period has expired, or if you are not eligible for standard no-charge technical support.

For more information about eligibility for no-charge technical support, see the following article in the Microsoft Knowledge Base:

Q154871 Determining If You Are Eligible for No-Charge Technical Support

STATUS

Microsoft has confirmed this to be a problem in Internet Information Server version 4.0.

Additional query words: 4.00 iis

Keywords : kbbug4.00 kbfix4.00
Version : winnt:4.0
Platform : winnt
Issue type : kbbug