Broken image link when calling CGI from img tag

lintunen has asked for the wisdom of the Perl Monks concerning the following question:

I have migrated a CGI Perl script from Apache to IIS. The calling script file makes a call to the CGI script that generates the image via an HTML tag and the script that generates the image uses $query->redirect on the CGI object before exiting. On Apache, everything works fine. On IIS a broken link appears in place of the image until a subsequent refresh if issued indicating that perhaps the page is displaying before the image is generated. What is the best method to fix this script so a manual refresh isn't required?

Comment on Broken image link when calling CGI from img tag

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Re: Broken image link when calling CGI from img tag by moritz (Cardinal) on Jul 13, 2010 at 09:24 UTC
If you look at the generated HTML, is the URL in the `<img ...>` tag correct? indicating that perhaps the page is displaying before the image is generated. If that's the case, it's an easy fix: generate the image before printing the HTML that contains the img tag. Perl 6 - links to (nearly) everything that is Perl 6.	[reply] [d/l]
Re^2: Broken image link when calling CGI from img tag by lintunen (Novice) on Jul 14, 2010 at 09:00 UTC
The tag seems fine. I'm not much of a Perl programmer, just adminning the application so with the information I've provided on how the script works, what techniques would I need to use so that the image is generated before the HTML is displayed?	[reply]
Re^3: Broken image link when calling CGI from img tag by moritz (Cardinal) on Jul 14, 2010 at 09:32 UTC
what techniques would I need to use so that the image is generated before the HTML is displayed? Make sure that the code for the image generation is run before the code that displays the HTML (and that it's not run in the background). Sorry, but without more knwoledge of the structure of your code it's impossible to give more concrete instructions. Perl 6 - links to (nearly) everything that is Perl 6.	[reply]
Re^4: Broken image link when calling CGI from img tag by lintunen (Novice) on Jul 26, 2010 at 08:12 UTC
Re^5: Broken image link when calling CGI from img tag by moritz (Cardinal) on Jul 26, 2010 at 09:45 UTC
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Re^5: Broken image link when calling CGI from img tag by Anonymous Monk on Jul 26, 2010 at 08:17 UTC
Re: Broken image link when calling CGI from img tag by JavaFan (Canon) on Jul 13, 2010 at 09:41 UTC
So, what's the HTTP traffic that goes around? "Broken link" can be many things. What's send over the wire?	[reply]
Re^2: Broken image link when calling CGI from img tag by bart (Canon) on Aug 09, 2010 at 14:09 UTC
Right. I recommend installing Wireshark and inspect the http traffic with it.	[reply]