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Does LOCATION: http://  Work?

Posted on 1997-11-12
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Last Modified: 2013-12-25
I am using the following line in my CGI-PERL code:

print "Location: http://mywebsite.com/test.htm\n\n";

This is the ONLY line I have that outputs back to browser.  From what I've gathered, this should tell the browser to switch to this new web site (mywebsite.com/test.htm).  Unfortunately it doesn't do this.  

All I get is DOCUMENT CONTAINS NO DATA (or something to that extent) by Netscape 4.0 and down and MS Explorer.

Any clues as to what I'm doing wrong?
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Question by:jujoo
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6 Comments
 
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Expert Comment

by:ozo
ID: 1831153
Perhaps the http://mywebsite.com/test.htm document contains no data?
Or perhaps some other line in your program is preventing the only output line from printing.
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Accepted Solution

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gwalters earned 0 total points
ID: 1831154
One more newline ought to do it (an HTTP header is delimited by a blank line).

BTW, I hope you're planning on increasing the points before grading this.
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LVL 6

Expert Comment

by:alamo
ID: 1831155
Funny, looks like there's a blank line after the Location header to me...

jujoo, if you run the script from the commasd line what does it print? That might tell you something.
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Expert Comment

by:gwalters
ID: 1831156
Oops, I didn't look closely enough.  Now that I have, I see the real problem.  Try printing this:


"Location: http://mywebsite.com/test.htm\r\n\r\n"



You MUST use CR LF at the end of lines in HTTP.


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LVL 6

Expert Comment

by:alamo
ID: 1831157
Must? I have never used \r\n and have seen only a handful of examples which do, almost everything I've seen uses just \n. I've never had a problem. (The server is repsonsible for parsing the headers anyway). Is this server-dependent?
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Expert Comment

by:gwalters
ID: 1831158
OK, "must" (especially with my all-caps emphasis) might have been a bit strong.  I meant it was in the HTTP spec as CR LF.

I beleive most servers see the LF coming in from a CGI and convert them to CR LF.

Could we get a URL to check so we can stop guessing here (and I can stop making bold statements that turn out to be wrong ;)


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