[Caml-list] The CGI library

[Caml-list] The CGI library

[amata]

  Hi list.

  I´m using the CGI library (developed for Jean-Christophe Filliâtre) 
in order to receive arguments in a CGI application. I use the 
function "parse_args" for parse the CGI arguments. 

  My problem is; I have a CGI application that must send data to 
another CGI. How can I send arguments to another CGI? Is this possible 
with the CGI library? What function should I use?

   Thank you very much.


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Re: [Caml-list] The CGI library

[Jean-Christophe Filliatre]

 >   I´m using the CGI library (developed for Jean-Christophe Filliâtre) 
 > in order to receive arguments in a CGI application. I use the 
 > function "parse_args" for parse the CGI arguments. 
 > 
 >   My problem is; I have a CGI application that must send data to 
 > another CGI. How can I send arguments to another CGI? Is this possible 
 > with the CGI library? What function should I use?

There are two possible answers:

1. either  you  just  want  your  first  CGI to  produce  a  web  page
   containing a  link to the second  CGI with arguments;  then the URL
   contains the CGI arguments, in such a way:

	http://www.blah.org/second.cgi?arg1=value1&arg2=value2&...

   where  strings  (arguments  and   values)  must  be  encoded  using
   Cgi.encode.

2. or you want to call the second CGI when running the first one; then
   you must set the according environment variables:
  
   - REQUEST_METHOD="GET"
   - QUERY_STRING="arg1=value1&arg2=value2&..."

   before calling the second CGI (where strings are also encoded using
   Cgi.encode.)  You may  use Unix.create_process_env  to do  this (or
   Unix.execvpe if you don't need to return to the first CGI)
	
Hope this helps,
-- 
Jean-Christophe Filliâtre (http://www.lri.fr/~filliatr)

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