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Re: Why would you want to print duplicate headers?

by Flame (Deacon)
on Sep 28, 2001 at 01:03 UTC ( [id://115261]=note: print w/replies, xml ) Need Help??

in reply to Why would you want to print duplicate headers?

I have to agree, there is no reason to make it the default. However there are circumstances where one would want to have the ability to print the header more than once. For example, if setting cookies and you don't want to shove them all within the same header statement... I cannot think of any other reaons, and I agree that it should default to HEADERS_ONCE = 1...

"Wierd things happen, get used to it"

Flame ~ Lead Programmer: GMS
  • Comment on Re: Why would you want to print duplicate headers?

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Re: Re: Why would you want to print duplicate headers?
by ajt (Prior) on Sep 28, 2001 at 13:25 UTC
    I assume that bothering to check that CGI hasn't printed the headers already was added as an option recently, I don't think it use to do this.

    It presumably takes a tiny bit more code and hence time to do the check so not checking may make your scripts a fraction faster - though I doubt you'd notice.

    Secondly if for some strange reason you wanted to print headers several times, and you updated your copy of CGI and this was now the default, you'd be unhappy. So I'd guess that Lincon made it an option, and possibly at some point it will become the default. There are other things that does that are better for backwards compatability than actual saftey.

    There are several things you can do to that are wise but not set by default, see Re: CGI::Safe and easy file uploading and Preventing DOS attacks with

    Finally, as strange as it seems, sometime it's useful to force your headers twice, so you can quickly see what your headers are, well the second set...

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