Kanwaljeet Singla
I am Senior SDE in IIS team working on FastCGI, php core and windows installer, WinCache and miscellaneous IIS modules.
Homepage: http://www.ksingla.net
Yahoo Messenger: kj_singla
Posts by Kanwaljeet Singla
My favorite motivational quotes
Feb 4th
I have been keeping a list of quotes which I read once in a while to motivate myself and to push myself to do the right things instead of doing things which are convenient. These has been a great source of inspiration for me. So instead of maintaining the list in my drafts, I decided [...]
Application specific mapping in FastCGI ISAPI 1.5
Feb 1st
IIS team recently released FastCGI ISAPI 1.5 for IIS 5.1 and IIS 6.0. One of the major new features added in this release is per application process pools. Per application process pools allow users to specify a unique FastCGI mapping for a particular web application in fcgiext.ini. Using this functionality administrators can now choose to [...]
Inconsistencies in wincache statistics page explained
Jan 27th
Problem description
Many customers running WinCache reported seeing different cache statistics on consecutive requests to wincache.php. Specifically, cache uptime and opcode cache summary returned second time by wincache.php was completely different than the data returned first time. Occasionally data shown in the opcode cache summary table didn’t match the chart displayed on its side. Many customers [...]
Using windows live as SMTP relay server
Jan 10th
Today I started writing a program to notify me when IP assigned to my router by my broadband provider changes. I wanted this program to check IP address of the router every few minutes and send me email if it detects that IP is changed. For sending email, I used System.Net.Mail.SmtpClient which requires a smtp host. Instead of running a smtp server on my machine, I started looking for free smtp relay servers available on the internet. I was surprised to find out that there are plenty of them available. In fact most of the popular email service providers like windows live, yahoo, gmail offer smtp relay services.
WaitForAllObjects to wait on more than MAXIMUM_WAIT_OBJECTS handles
Jan 6th
One of the painful limitations of WaitForMultipleObjects function is that you can use it to wait for a maximum of MAXIMUM_WAIT_OBJECTS number of object handles. Value of MAXIMUM_WAIT_OBJECTS is 64. If you need to wait on more than MAXIMUM_WAIT_OBJECTS handle, you can either create a separate thread to wait on MAXIMUM_WAIT_OBJECTS and then do a wait on these threads to finish. Using this method you can create 64 threads each of those can wait for 64 object handles.
Urlscan to RequestFiltering migration using MSDeploy
Oct 30th
In addition to FastCGI migration provider, MSDeploy 1.0 RTW shipped with a URLScan to request filtering migration provider to ease migration of UrlScan.ini settings to system.webServer/security/requestFiltering section. Even though URLScan 3.1 is supported on Win2K8 and you are not required to move to request filtering module, there are few advantages in using request filtering module. One advantage is that all your configuration can stay together in applicationHost.config and web.config and you are not required to maintain a separate configuration file.