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david rosner (rosner@mars.superlink.net) wrote:
: I have a cgi program that writes to a html file then saves it and opens
: it. When i run the program i want to force the browser to reload the file.


: How can i tell the browser to reload this??

  you open the file.. but you don't pipe/shunt it's contents
  to stdout?  that will return the file.. or.. you could forego
  opening it.. and just use the Location directive  :)

  TSJ


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In <x7u46ys0du.fsf@chacal.demon.co.uk>, jrg@demon.net (James R Grinter) wrote:
> that's 'Expires:'. Get the date/time format correct. (There seems to
> be a little debate about this, as Netscape's Netsite server sends a
> different format to CERN, and those both differ from Apache.)

No debate, just multiple current practices. There are three formats
clients & servers are required to accept in HTTP/1.0:

 Preferred (from RFC 822, updated by RFC 1123): Sun, 06 Nov 1994 08:49:37 GMT
Obsolete (from RFC 850, obsoleted by RFC 1036): Sunday, 06-Nov-94 08:49:37 GMT
              Unix (ANSI C's asctime() format): Sun Nov  6 08:49:37 1994

The preferred method is the only one with both a time zone (which must
be GMT). HTTP/1.0 clients and servers must not generate Unix format
time stamps.

NetSite (1.1) and CERN (3.0) both generate the 850 format timestamp.
Apache (0.8.12x) generates the 822 format. Congrats to the Apache team
for taking the high road. Possibly you were looking at an older version
of CERN's server?

	<mike

In article <423ai6$r6n@news.bu.edu> shishir@bu.edu (Shishir Gundavaram) writes:
> david rosner (rosner@mars.superlink.net) wrote:
> : What is the prama line? And when i included a mime-type:"as-is" Netscape
> : told me it didn't know how toandle the file. I am using cig lib for c to

'as-is' is an internal type used by Apache to send a file complete
with custom headers without requiring a cgi script. A real cpu/time
saver.

> Go ahead and use the "Pragma: no-cache" HTTP header and you'll be fine.
> You could also use the "Expired:" header with the current time, and

that's 'Expires:'. Get the date/time format correct. (There seems to
be a little debate about this, as Netscape's Netsite server sends a
different format to CERN, and those both differ from Apache.)

-- jrg.

david rosner (rosner@mars.superlink.net) wrote:
: I have a cgi program that writes to a html file then saves it and opens
: it. When i run the program i want to force the browser to reload the file.
: I am using the apache server as the web server. Someone told me to use the
: Pragma: no-cache and another person told me to use a mime type "as-is"

: What is the prama line? And when i included a mime-type:"as-is" Netscape
: told me it didn't know how toandle the file. I am using cig lib for c to
: handle the cgi stuff. I simply read in the form data and write it to a
: file. Then i use the cgi lib procedure show_html to show the new html
: file.

Dave,

Go ahead and use the "Pragma: no-cache" HTTP header and you'll be fine.
You could also use the "Expired:" header with the current time, and
it will force the browser to reload the next time.

--Shishir

>>>>> "Mike" == Mike Meyer <mwm@contessa.phone.net> writes:

Mike> No debate, just multiple current practices. There are three formats
Mike> clients & servers are required to accept in HTTP/1.0:

Mike>  Preferred (from RFC 822, updated by RFC 1123): Sun, 06 Nov 1994 08:49:37 GMT
Mike> Obsolete (from RFC 850, obsoleted by RFC 1036): Sunday, 06-Nov-94 08:49:37 GMT
Mike>               Unix (ANSI C's asctime() format): Sun Nov  6 08:49:37 1994

Mike> The preferred method is the only one with both a time zone (which must
Mike> be GMT). HTTP/1.0 clients and servers must not generate Unix format
Mike> time stamps.

Like this?

	#!/usr/bin/perl
	sub arpa {
	  my @gm = split /\s+/, gmtime $_[0];
	  "$gm[0], @gm[2,1,4,3] GMT";
	}
	$NOW = arpa time;  ## get now as arpa time format

Warning: requires perl5.  but who doesn't have that by now? :-)

Just another web-head and perl hacker,
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