DOCUMENT:Q188343 TITLE :ISAPI Filter Not Receiving SF_NOTIFY_SEND_RAW_DATA with Proxy PRODUCT :IIS PROD/VER:4.0 OPER/SYS:WINDOWS NT KEYWORD :prodiis4 ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Server version 4.0 ------------------------------------------------------------------------------- SYMPTOMS ======== ISAPI SF_NOTIFY_SEND_RAW_DATA notifications are no longer received by ISAPI raw filter after modifying the CbInData value in the HTTP_RAW_DATA_FILTER structure after first notification. This behavior has been noted when using the above technique in ISAPI raw data filters running in conjunction with Proxy Server and can occur with other ISAPI filters. RESOLUTION ========== 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 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://support.microsoft.com/support/supportnet/default.asp The English version of this fix should have the following file attributes or later: Date Time Size File Name Platform ------------------------------------------------------------- 11/05/98 04:42p 27,696 Admwprox.dll (x86) 11/05/98 04:44p 325,856 Asp.dll (x86) 11/05/98 04:42p 43,456 Coadmin.dll (x86) 11/05/98 04:44p 11,168 Ftpctrs2.dll (x86) 11/05/98 04:44p 81,376 Ftpsvc2.dll (x86) 11/05/98 04:42p 10,224 Iisfecnv.dll (x86) 11/05/98 04:42p 61,920 Iislog.dll (x86) 11/05/98 04:43p 16,848 Infoadmn.dll (x86) 11/05/98 04:42p 184,192 Infocomm.dll (x86) 11/05/98 04:43p 9,584 Infoctrs.dll (x86) 11/05/98 04:42p 47,936 Isatq.dll (x86) 11/05/98 04:42p 29,520 Iscomlog.dll (x86) 11/05/98 04:42p 13,856 Lonsint.dll (x86) 11/05/98 04:42p 8,336 Lonsiw95.dll (x86) 11/05/98 04:42p 71,232 Metadata.dll (x86) 11/05/98 04:42p 7,488 Rpcref.dll (x86) 11/05/98 04:43p 18,032 Svcext.dll (x86) 11/05/98 04:43p 14,752 W3ctrs.dll (x86) 11/05/98 04:43p 227,392 W3svc.dll (x86) 11/05/98 04:43p 55,456 Wam.dll (x86) 11/05/98 04:42p 49,424 Admwprox.dll (Alpha) 11/05/98 04:44p 545,552 Asp.dll (Alpha) 11/05/98 04:42p 77,072 Coadmin.dll (Alpha) 11/05/98 04:43p 17,168 Ftpctrs2.dll (Alpha) 11/05/98 04:43p 126,224 Ftpsvc2.dll (Alpha) 11/05/98 04:42p 17,680 Iisfecnv.dll (Alpha) 11/05/98 04:42p 110,864 Iislog.dll (Alpha) 11/05/98 04:42p 25,872 Infoadmn.dll (Alpha) 11/05/98 04:42p 302,864 Infocomm.dll (Alpha) 11/05/98 04:42p 15,120 Infoctrs.dll (Alpha) 11/05/98 04:42p 82,704 Isatq.dll (Alpha) 11/05/98 04:42p 45,840 Iscomlog.dll (Alpha) 11/05/98 04:42p 23,312 Lonsint.dll (Alpha) 11/05/98 04:42p 13,584 Lonsiw95.dll (Alpha) 11/05/98 04:42p 131,856 Metadata.dll (Alpha) 11/05/98 04:42p 12,048 Rpcref.dll (Alpha) 11/05/98 04:42p 29,456 Svcext.dll (Alpha) 11/05/98 04:43p 21,264 W3ctrs.dll (Alpha) 11/05/98 04:43p 381,200 W3svc.dll (Alpha) 11/05/98 04:43p 92,944 Wam.dll (Alpha) NOTE: The IIS 4.0 version of this hotfix must be installed over Windows NT 4.0 Service Pack 4. This hotfix has been posted to the following Internet location as Fltrfixi.exe (x86) and Fltrfixa.exe (Alpha): ftp://ftp.microsoft.com/bussys/iis/iis-public/fixes/usa/fltr-fix/ 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. ============================================================================ THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.