Tool - [HTTPHeaders]

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width,initial-scale=1.0">
        <title>HTTPHeaders</title>
    </head>
    <body>
        <div style="width:100%;text-align:center;">
            <input type="text" id="url" value="https://example.org" size="40" maxlength="2048" style="width:80%;" onfocus="this.select();"><br>
            <textarea id="result" cols="79" rows="15" style="width:80%;text-align:left;"></textarea><br>
            <input type="button" id="btngo" value="Go" onclick="javascript:this.disabled=true;getHTTPHeaders();" style="width:40%;"><br>
        </div>
        <script>
        function getHTTPHeaders()
        {
            var objXHTTP = new XMLHttpRequest();
            objXHTTP.onreadystatechange = function()
            {
                if( ( this.readyState == 4 ) &&
                    ( this.status == 200 ) )
                {
                    document.getElementById( 'result' ).value = objXHTTP.responseText;
                    document.getElementById( 'btngo' ).disabled = false;
                }
            };
            objXHTTP.open( 'GET' , 'https://omega.phamework.com/wa412:HTTPHeaders/format:txt/?url=' +
                           document.getElementById( 'url' ).value , true );
            objXHTTP.send();
            return true;
        }
        getHTTPHeaders();
        </script>
    </body>
</html>