No. Since you do both requests in the same program, the $cookie_jar is stored in memory, so you don't have to save it to a file or load it from a file. You just need to put a cookie in it (extract_cookies), and then put a cookie from the jar in your request (add_cookie_header).

See 


  $cookie_jar->add_cookie_header($request);
      The add_cookie_header() method will set the appropriate
      Cookie:-header for the *HTTP::Request* object given as argument.
+ The
      $request must have a valid url attribute before this method is
      called.

  $cookie_jar->extract_cookies($response);
      The extract_cookies() method will look for Set-Cookie: and
      Set-Cookie2: headers in the *HTTP::Response* object passed as
      argument. Any of these headers that are found are used to update
+ the
      state of the $cookie_jar.

[download]

update:
I was reviewing some of my nodes, and then I noticed $ua->cookie_jar ( you know, it would've be nice if somebody pointed this out to me). Turning to the documentation would've still been helpfull though (you'd have known the following, and could've dismissed my comments quickly ;)

$ua->cookie_jar([$cookies]) Get/set the HTTP::Cookies object to use. The default is to have no cookie_jar, i.e. never automatically add ``Cookie'' headers to the requests.

 

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