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Perl in a Nutshell

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The LWP Library
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 $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.

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