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Hot Topic (More than 10 Replies) Cgi giveing me a headach (Read 5133 times)
throesch
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Cgi giveing me a headach
Apr 10th, 2002 at 12:46am
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hey ppl i dont understand why im getting this error.

CGI Error
The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are:

Could not open file! at D:\home\Default\20inchbmx.com\htdocs\cgi-bin\psdwire\udgnet.pl line 7.


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#!/usr/bin/perl
#######################
# Underground network #
#######################

$data_file="data.txt";
open(BOT, $data_file) || die("Could not open file!");
@raw_data=<BOT>;
close(BOT);
print "Content-type: text/html\n\n";
print "<HTML><BODY>";
foreach $BOT (@raw_data)
{
 chop($BOT);
 ($hubs,$user,$total)=split(/\|/,$BOT);
 print "<b>Total Hubs:</b> $hubs ";
 print "<b>Total Users:</b> $user ";
 print "<b>Total Files Shared:</b> $total";
}
 print "</BODY></HTML>";


line 7 is open(BOT, $data_file) || die("Could not open file!");

when i make it say open(BOT, $data_file);

nothing is shown but it showed b4 any suggestions
  
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DemonSlayer
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Re: Cgi giveing me a headach
Reply #1 - Apr 10th, 2002 at 1:02am
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make sure that the file exists and if all else fails just stick the location into the open command instead of the variable
  
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Michael
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Re: Cgi giveing me a headach
Reply #2 - Apr 10th, 2002 at 1:18am
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Well, you'd best print the HTTP headers (content-type: text/html) before you do the open, because if the open fails, then the program will end and attempt to print "Could not open file!" but since no headers have been printed out, it won't know that it's giving out text/html. If you take out the die, it won't try to print anything, so no worries.

Do you understand?
  
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Dave Baughman
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Re: Cgi giveing me a headach
Reply #3 - Apr 10th, 2002 at 1:31am
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Is the file data.txt located in the same directory as the script? Also, do
open(BOT, "$data_file")
It may not be parsing the variable because you don't have double quotes around it. And if you want to be specific, do
open(BOT, "<$data_file")
The < is implied if you don't specify it... it just means open for reading. But you can stick it in there anyway just in case. If the file doesn't exist in the same directory as the script, though, it will spit out the error.

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Michael
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Re: Cgi giveing me a headach
Reply #4 - Apr 10th, 2002 at 1:51am
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It really should work without the double quotes, I believe. Which part of the error were you worrying about, Matt? The part about not finding the file or the part about the HTTP headers? Or both?
  
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throesch
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Re: Cgi giveing me a headach
Reply #5 - Apr 10th, 2002 at 1:52am
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ok i tried every thing yall suggested and yes the file is there.
  
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throesch
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Re: Cgi giveing me a headach
Reply #6 - Apr 10th, 2002 at 1:55am
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ok after trying every thing it dont work.

i beleave that the server is at fault b/c it worked b4 they crashed
  
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throesch
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Re: Cgi giveing me a headach
Reply #7 - Apr 10th, 2002 at 6:40pm
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ok now that i fixed that darn problem i have a question how would i add a time loop. what i mean is after a sertain amount of time passes would i make it refresh. in case new info was added.
  
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Michael
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Re: Cgi giveing me a headach
Reply #8 - Apr 10th, 2002 at 6:56pm
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Well, if it's outputting HTML, just put in a meta refresh.
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<meta http-equiv="Refresh" Content="15; URL=http://www.blah.com">


Change 15 to the number of seconds between refreshes.
  
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throesch
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Re: Cgi giveing me a headach
Reply #9 - Apr 10th, 2002 at 8:44pm
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well ive tried that but when i add the meta code to the cgi it kills the cgi

also do i have to have it in the <head> tag
  
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Christer Alexander
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Re: Cgi giveing me a headach
Reply #10 - Apr 12th, 2002 at 10:24am
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yes, all <meta> tags must be inside a <head>....</head> tag.....
  
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Michael
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Re: Cgi giveing me a headach
Reply #11 - Apr 12th, 2002 at 9:18pm
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Post the spot where you put in the meta tag, there's no reason for it to be "killing" the script.
  
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throesch
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Re: Cgi giveing me a headach
Reply #12 - Apr 15th, 2002 at 4:11am
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darn im sorry for all this i found out my host is messing with perl and it is really messed up
  
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