HTTP/1.1 200 OK Server: Apache Date: Wed, 09 Dec 2015 03:29:14 GMT Content-Type: text/html; charset=utf-8 Connection: keep-alive <html> <head> <title>Test</title> </head> <body class="h-entry"> <a href="http://example.com/100" class="u-in-reply-to">in reply to</a> <div class="u-in-reply-to h-cite"> <a href="http://example.com/100" class="u-url">this post</a> </div> <p class="e-content">This page has duplicate in-reply-to values.</p> <a href="/duplicate-in-reply-to-urls" class="u-url">permalink</a> </body> </html>