$ua->get_basic_credentials (realm,url)
Returns the list containing the username and password for the given
realm
and
url
when authentication is required by the server. This function is usually called internally by
request
. This method becomes useful when creating a subclass of LWP::UserAgent with its own version of
get_basic_credentials
. From there, you can rewrite
get_basic_credentials
to do more flexible things, like asking the user for the account information, or referring to authentication information in a file. All you need to do is return a list, where the first element is a username and the second element is a password.