Gossamer Forum: General: Perl Programming: CGI application misbehaved by not returning a complete set of HTTP headers

Jul 23, 2004, 12:39 AM

mkishore

Novice (8 posts)

Jul 23, 2004, 12:39 AM

Post #1 of 10

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CGI application misbehaved by not returning a complete set of HTTP headers

Hi
I am getting a eorror when I am trying to Run perl/cgi program. I am pasting the code with this mail.
when i am running this program i am getting error
quote"
The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are:

Name "V::number1" used only once: possible typo at c:\cg\cal.pl line 8.
Name "V::number2" used only once: possible typo at c:\cg\cal.pl line 8.
Sum Of two numbers are 6
"unquote
plz help me out
quote"
this is the html page
<HTML>
<HEAD>
<TITLE> PERL </TITLE>
</HEAD>
<form action = "http://localhost/manish/cal.pl" method = "get";
<br>
Enter First Number
<input type=text name=number1>
<br>
Enter Second Number
<input type=text name=number2>
<br>
<input type=submit value="calculate sum">
</form>
</BODY>
</HTML>

this is the perl file
#!/usr/bin/perl
use strict;
use warnings;
use CGI;
my $query = new CGI;
$query->import_names('V');
my $sum;
$sum = $V::number1 + $V::number2;
print "Sum Of two numbers are $sum";
"unquote

Jul 23, 2004, 1:02 AM

Andy

Veteran / Moderator (17298 posts)

Jul 23, 2004, 1:02 AM

Post #2 of 10

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Re: [mkishore] CGI application misbehaved by not returning a complete set of HTTP headers In reply to

Mmm.. what is "$query->import_names('V');
" all about?

I would just use;

Code:
#!/usr/bin/perl  

  use strict;  
  use warnings;  
  use CGI;  

  my $query = new CGI;  
print $query->header();
  my $sum;  
  $sum = $query->param('number1') + $query->param('number2');  
  print "Sum Of two numbers are $sum";

The bit in red is where your main problem lies. You need to print out a header first, or it will just give a 500 IS Error :)

Hope that helps.

Cheers

Andy (mod)
andy@ultranerds.co.uk

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Jul 23, 2004, 3:24 AM

mkishore

Novice (8 posts)

Jul 23, 2004, 3:24 AM

Post #3 of 10

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Re: [Andy] CGI application misbehaved by not returning a complete set of HTTP headers In reply to

Thx Andy..
It is workng now.

Jul 29, 2004, 12:55 AM

mkishore

Novice (8 posts)

Jul 29, 2004, 12:55 AM

Post #4 of 10

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CGI Error In reply to

Hi Andy..
I am gettting Stupid Error. I am sending this mail to u spl coz u had heled me out on previously also.
I am using the Acitve Perl 5.6.1 on windows 2000 professional.
I am just pasting the code here.

Quote:

#!/usr/bin/perl
use warnings;
use strict;
use CGI;
my $q = new CGI;
print $q->header,
$q->start_html( 'Hello Manish!'),
$q->h1('Hello' ),
$q->end_html;

please let me know where i am making mistake here.

Thanks
Manish

Jul 29, 2004, 12:58 AM

Andy

Veteran / Moderator (17298 posts)

Jul 29, 2004, 12:58 AM

Post #5 of 10

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Re: [mkishore] CGI Error In reply to

Hi. Why are you doing this?

Code:
$q->start_html( 'Hello Manish!'),  
$q->h1('Hello' ),  
$q->end_html;

I would do either;

Code:
print $q->start_html( 'Hello Manish!'),  
$q->h1('Hello'),  
$q->end_html;

,...or;

Code:
print $q->start_html( 'Hello Manish!'); 
print $q->h1('Hello'); 
print $q->end_html;

Hope that helps.

Cheers

Andy (mod)
andy@ultranerds.co.uk

Jul 29, 2004, 1:09 AM

mkishore

Novice (8 posts)

Jul 29, 2004, 1:09 AM

Post #6 of 10

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Re: [mkishore] CGI Error In reply to

Andy..
I tried with ur method .but even then also i am getting error.
This the error which I am getting

Quote:

"$Id: CGI.pm,v 1.49 2001/02/04 23:08:39 lstein Exp $" is not exported by the Car
p module at C:/Perl/lib/CGI.pm line 21
Can't continue after import errors at C:/Perl/lib/CGI.pm line 21
BEGIN failed--compilation aborted at C:/Perl/lib/CGI.pm line 21.
Compilation failed in require at a1.pl line 4.
BEGIN failed--compilation aborted at a1.pl line 4.

Jul 29, 2004, 1:17 AM

Andy

Veteran / Moderator (17298 posts)

Jul 29, 2004, 1:17 AM

Post #7 of 10

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Re: [mkishore] CGI Error In reply to

Looks like it may be an error inside CGI.pm itself. Afraid I wouldn't know what/how though :(

Cheers

Andy (mod)
andy@ultranerds.co.uk

Jul 29, 2004, 2:30 AM

mkishore

Novice (8 posts)

Jul 29, 2004, 2:30 AM

Post #8 of 10

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Re: [Andy] CGI Error In reply to

Andy then this case when U suggest me?
Do I need to download new CGI.pm ?

I am a beginner so plz help me

Jul 29, 2004, 2:32 AM

Andy

Veteran / Moderator (17298 posts)

Jul 29, 2004, 2:32 AM

Post #9 of 10

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Re: [mkishore] CGI Error In reply to

Yeah, I would suggest just reinstalling CGI.pm.

Alternativly, buy a bit of cheap hosting (there are deals out there for as little as $5US/month), as they should have all this kinda stuff already srt up for you Wink

Cheers

Andy (mod)
andy@ultranerds.co.uk

Jul 29, 2004, 8:08 AM

karthik

Novice (5 posts)

Jul 29, 2004, 8:08 AM

Post #10 of 10

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Re: [mkishore] CGI Error In reply to

#!/usr/bin/perl -wT
use warnings;
use strict;
use CGI;
my $q = new CGI;
print $q->header,
$q->start_html( 'Hello Manish!'),
$q->h1('Hello' ),
$q->end_html;

Try this and use chmod 0755 "filename.cgi" and use ./filename.cgi in command prompt.
It works for me