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External Data Source

Source

Regular Expression
^(ht|f)tp(s?)\:\/\/(([a-zA-Z0-9\-\._]+(\.[a-zA-Z0-9\-\._]+)+)|localhost)(\/?)([a-zA-Z0-9\-\.\?\,\'\/\\\+&%\$#_]*)?([\d\w\.\/\%\+\-\=\&\?\:\\\"\'\,\|\~\;]*)$