Re: Graphics and mod_perl
On Wed, 2 Oct 2002, Justin Luster wrote: > I'm new to mod_perl and I'm really enjoying it. It has really improved > performance. Right now I'm just using Modperl::Registry to speed up > things. I have a question about showing graphics using a Perl Script > and running it through mod_perl. [ ... ] > It seems that the current working directory for the Perl scripts when > run under mod_perl is in the bin directory where Apache.exe is. That behaviour was introduced into Win32 Apache some time back, one reason being, as I understand it, is so that one could double-click on the Apache icon to start it up. > I have considered using absolute paths but even that does not > seem to work correctly with graphics. [ ... ] As Per Einar mentioned in an earlier reply, using absolute server paths is the best solution - generally, for cgi and registry scripts, one should not rely on an assumption of a current working directory. There is a module, FindBin, which reveals the directory of a script, but as explained in the perl-5.8 docs for FindBin, there's some caveats to using it under mod_perl and other persistant Perl environments. -- best regards, randy kobes
Re: Graphics and mod_perl
At 01:41 03.10.2002, Justin Luster wrote: > > >I m new to mod_perl and I m really enjoying it. It has really improved >performance. Right now I m just using Modperl::Registry to speed up >things. I have a question about showing graphics using a Perl Script and >running it through mod_perl. > > > >Using Perl under regular CGI to create a dynamic web page I have always used: > > > >print ; > > > >and this would display the graphic to the web page assuming that the file >thefile.jpg was in the same directory as the Perl script . If the >graphic was in another directory then something like: > > > >print ; > >[...] > >print http://www.mysite.com/graphics/thefile.jpg\ > ; > >but it seems that there is a delay in displaying the graphic when I do this. > >Where is the current working directory when running a Perl script under >mod_perl. Hello Justin, You seem to misunderstand the working of the HTML tag. All you're doing is to give an idea to the *browser* about where it should find the image, relatively to the *URI* of your script. Simply put, before you had: /cgi-bin/yourscript.cgi ---> img src="thefile.jpg" ---> browser tries to fetch /cgi-bin/thefile.jpg Now, you have: /ssiweb/yourscript.pl > img src="../graphics/thefile.jpg" ---> browser fetches /ssiweb/../graphics/thefile.jpg = /graphics/thefile.jpg You have almost found the best solution when in doubt: using absolute URIs. However, as you noticed, using the full URL is slower because the browser has to check the DNS again etc etc. So, if your graphics are acccessible as http://www.example.com/graphics/file.jpg, then you can insert an img tag with src="/graphics/file.jpg". Note the first slash which says to the browser "Begin at the root of this site and fetch the following URI". Ok? -- Per Einar Ellefsen [EMAIL PROTECTED]
Graphics and mod_perl
I’m new to mod_perl and I’m really enjoying it. It has really improved performance. Right now I’m just using Modperl::Registry to speed up things. I have a question about showing graphics using a Perl Script and running it through mod_perl. Using Perl under regular CGI to create a dynamic web page I have always used: print “ and this would display the graphic to the web page assuming that the file “thefile.jpg” was in the same directory as the Perl script . If the graphic was in another directory then something like: print “ was used. Now that I’m using mod_perl and an Alias to my cgi-bin I’m having difficulties knowing how to reference the graphics file. The following directive is in my httpd.conf file. Alias /ssiweb/ "C:/Server/htdocs/develop/cgi-bin/" SetHandler perl-script PerlResponseHandler ModPerl::Registry Options +ExecCGI PerlOptions +ParseHeaders It seems that the current working directory for the Perl scripts when run under mod_perl is in the bin directory where Apache.exe is. I have considered using absolute paths but even that does not seem to work correctly with graphics. I could also do something like: print “ but it seems that there is a delay in displaying the graphic when I do this. Where is the current working directory when running a Perl script under mod_perl. I would appreciate any help. Thanks.
