David Wang

David Wang on IIS, ISAPI, Exchange, Virtual Server, and whatever else I fancy...

Blog - About

David's Bio

1/30/2006

Hurray... there is finally an "About the blog author" link... so I am going to move my links here.

//David

  • David Wang

    Fix for Metabase Import Export from the UI

    • 0 Comments
    Question: Hello David, I was having issues which are identical to this post: http://groups.google.com/group/microsoft.public.inetserver.iis/browse_frm/thread/4f1971dd368c0b48/429dec14f3fcee23?lnk=st&q=cannot+import+virtual+directory&rnum...
  • David Wang

    Thoughts on Application Pool Recycling and Application Availability

    • 44 Comments
    Question: I am running IIS 6.0. We are currently trying to incorporate our application pools to recycle every 2 hours. The problem is everytime the the pool is recycled and the process is killed everyone connected to that webpage loses all connectivity...
  • David Wang

    Security considerations of UseSharedWPDesktop on IIS6

    • 5 Comments
    Question: In the section "Number of Application Pools That Can Be Configured" of the document: http://www.microsoft.com/technet/prodtechnol/windowsserver2003/technologies/webapp/iis/appisoa.mspx The following statement suggests that we should use...
  • David Wang

    HOWTO: Install and Use CustomAuth on IIS 6

    • 24 Comments
    It never ceases to amaze me how easily users will download and install arbitrary binaries from arbitrary sources as administrator... but the security concerns aside, I am going to address the popular question of how exactly to configure CustomAuth and...
  • David Wang

    To TiVo or not to TiVo. That is the Question.

    • 6 Comments
    A little over two years ago, I purchased a condo out in suburban Seattle (in Issaquah on Cougar Mountain with a view of Lake Sammamish, for the curious and geographically inclined), and one of my first purchases was a modern TV and a matching TiVo. Yes...
  • David Wang

    IIS Diagnostics Toolkit January 2006 Released

    • 4 Comments
    After a six month delay (for the gory details, see this entry and this entry ), we finally released the updated version of the IIS Diagnostics Toolkit January 2006 on Friday the 13th on January 2006. Superstitions aside, it can be found here: http...
  • David Wang

    New Year 2006

    • 1 Comments
    Ok, I originally had grandiose plans of finishing up many of my queued up blog entries during my vacation over the holidays since I can only take so many days of relaxation before I get anxious to "do" something mentally stimulating. But then, life decided...
  • David Wang

    HOWTO: Measure Effectiveness of the HTTP.SYS Kernel Mode Response Cache with IIS 6

    • 1 Comments
    Hmm... ever since I wrote the referenced blog entry about HTTP.SYS Kernel Response cache and IIS 6.0, I have gotten questions about one thing that I forgot to mention - how to determine the effectiveness of the Kernel Response Cache. Here goes... Question...
  • David Wang

    HOWTO: Basics of IIS6 Troubleshooting

    • 44 Comments
    I recently sat down and thought a little about the typical user experience when troubleshooting IIS6, assuming s/he had little/no IIS context that long-time users have... and the picture did not look so good. Now, I know that IIS7 will make huge improvements...
  • David Wang

    HOWTO: Delete Web Service Extensions that cannot be normally Deleted

    • 1 Comments
    Question: We installed ServletExec ISAPI for use with ESRI's ArcIMS map server software. We decided to go with Apache Tomcat servlet engine instead and uninstalled ServletExec. However, the Web Service Extension name "ServletExec" still exists, but...
  • David Wang

    IIS and Virtual Server Conversations Part 2

    • 0 Comments
    Question: I am a 'nuts&bolts' guy - I need to know what kind of nuts and bolts to use for what kind of job, I don't need to know about the philosophy of why the nuts are having their threads inverted. Nuts and bolts have a practical use. I just...
  • David Wang

    IIS and Virtual Server Conversations

    • 7 Comments
    Question: In preparation to installing Virtual Server, and acknowledging the fact that it needs IIS, I would like to know: Is there any specific setup to perform on the IIS before I configure VS? Or, will it just need to be there? Also, since...
  • David Wang

    Does IIS Forward Requests?

    • 2 Comments
    Question: Hi, I have situation where I use JRun or Tomcat as servlet container with IIS (5.0 or 6.0). I want IIS to forward the HTTP (Basic) Authorization header that comes with the request via ISAPI-DLL to Tomcat or JRun. That does not work in...
  • David Wang

    Poor ASP Performance on IIS 6.0 in Windows Server 2003 SP1?

    • 3 Comments
    Question: Hi David, Do you have any idea whatsoever of why ASP output is not buffered and the performance on our IIS 6.0 servers are truly bad? Moreover, the weird part is that this does not happen when you open the "problem pages" locally on the...
  • David Wang

    About w3wp Memory Usage and Any Benefits to Stripping Application Extensions in IIS6?

    • 6 Comments
    Frequently, users ask about the "footprint for IIS6"... usually in reference to mass-hosting since it affects the number of application pools that can be simultaneously running. I know that users have a common misconception that Microsoft loves propagating...
  • David Wang

    Why IIS6 only loads 49 ISAPI Filters

    • 2 Comments
    Question: Hi, i have 52 sites in IIS6 running on 1 application pool and im trying to install an ISAPI filter for eache site (each site has it's actual phisycal DLL). the installation works OK but when restarting the IIS only 49 sites work and i...
  • David Wang

    HOWTO: Compile and Use my ISAPI Code Samples

    • 38 Comments
    Since I get this following question on how to compile/use my ISAPI code examples quite a bit, I wager I should just have a blog post that answers it once and for all. But, come on you guys... I already did the hard part in providing the full compiling...
  • David Wang

    HOWTO: Diagnose one cause of W3SVC failing to start with Win32 Error 193 on 64bit Windows

    • 15 Comments
    I recently came across an interesting new variation of "failure" related to enabling WOW64 that can happen on IIS6 on 64bit Windows... so I am going to explain what happened and how to fix it. Question: Hi, I ran into an issue with IIS in wow64...
  • David Wang

    How IIS6 Compression Schemes interact with ISAPI Filters

    • 1 Comments
    Question: Hi we configure IIS6 for HTTP compression for static and dynamic pages. And its priority is high. We wrote one ISAPI filter where I capture body of response. When we send request for dynamic pages like (asp) with Content-Encoding of...
  • David Wang

    DebugDiag - The Saga to RTM, Continued

    • 3 Comments
    For the past several days, I have spent a lot of time mired in the very bureaucracy that I identified in this blog entry ... all for one reason - to get DebugDiag and the IIS Diagnostics Toolkit integrated and released. Yes, the Windows OOB process...
  • David Wang

    Child URL Execution and SSI #exec, Redux

    • 13 Comments
    Ok, I now have gotten questions about SSI #exec behavior on IIS6 for both ISAPI (ASP) and CGI (Perl) resources, so here is the consolidation of it all... Question: Hi David, I have searched Google to help me figure out a problem I am having,...
  • David Wang

    The Unofficial IIS Trip to Whistler

    • 1 Comments
    So, several members of the IIS team are going to be taking an earlier Christmas break and be OOF this weekend. No, we haven't gone "loco" with IIS7... yet. ;-) We are just "unofficially" having various members of the team across all discplines enjoy some...
  • David Wang

    HOWTO: Synchronize User Credentials in IIS

    • 12 Comments
    Question: Hello, I recently had to modify a domain administrator account on my system and as a result parts of my web site are no longer operational. I keep getting a 401.1 error whenever my web pages attempt to execute a Perl script that dynamically...
  • David Wang

    HOWTO: Redirect the browser to a new URL based on Referer

    • 4 Comments
    While I do not recommend users to freely write ISAPI Filters and install them on IIS, there are still tasks that favor/require ISAPI Filter... even on IIS6 with HSE_REQ_EXEC_URL. Question: Hello David, I came across your blog several times when...
  • David Wang

    One Year Blog Anniversary

    • 2 Comments
    Ok, I am a real sucker for all things sentimental, such as Anniversaries. One year ago, I made my first blog post, a huge script code snippet that illustrates some frequently misunderstood concepts. Never mind the fact that it was not until four months...
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