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When posting to http://validator.w3.org/check, if a number a requests have been made recently then the "Status: 403 Forbidden" header incorrectly appears in the body of the reply, not the head: > curl -d '' -v http://validator.w3.org/check * About to connect() to validator.w3.org port 80 (#0) * Trying 128.30.52.91... * Connected to validator.w3.org (128.30.52.91) port 80 (#0) > POST /check HTTP/1.1 > User-Agent: curl/7.29.0 > Host: validator.w3.org > Accept: */* > Content-Length: 0 > Content-Type: application/x-www-form-urlencoded > < HTTP/1.1 200 OK < Date: Thu, 12 Dec 2013 01:44:02 GMT < Server: Apache/2 < Last-Modified: Mon, 04 Nov 2013 10:04:00 GMT < ETag: "18011-b73-4ea5708f26400" < Accept-Ranges: bytes < Content-Length: 2931 < Content-Type: text/plain < Vary: Accept-Encoding < Connection: close < Status: 403 Forbidden Vary: Referer Content-type: text/html <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <meta http-equiv="Content-Type" content="text/html;charset=utf-8" /> <title>W3C Validator - Excessive Use</title> <link rev="made" href="mailto:www-validator@w3.org" /> <link rev="start" href="/" title="Home Page" /> <style type="text/css" media="all">@import "/style/base"; @import "/style/results";</style> <style type="text/css"> div#result { padding-top: 0; } div#result h2 { line-height: normal } div#result p { margin: 1em 0em; } #vs img { float: left; margin-right: 20px; margin-bottom: 10px; } address { clear: both; margin: 24px 32px 0px; padding: 10px 0; border-top-style: solid; border-width: thin; } </style> </head> <body> <div id="banner"> <h1 id="title"> <a href="http://www.w3.org/"><img alt="W3C" width="110" height="61" id="logo" src="/images/w3c.png" /></a> <a href="/"><span>Markup Validation Service</span></a> </h1> <p id="tagline">Check the markup (HTML, XHTML) of Web documents</p> </div> <div id="results_container"> <div id="result"> <h2 id="results" class="invalid">Sorry! This document can not be checked.<br /> <strong>We have received excessive Validation requests originating from your IP address</strong></h2> <p> Please use this free service reasonably. Your IP address will be unblocked automatically after some time. </p> <p> If you are using a browser plugin that checks every single page you visit, please discontinue using it and only use selectively. </p> <p> W3C will continue to increase Validator resources and services and onlyimposes restrictions to ensure the service remains available to the community. </p> <p id="vs"> <a href="https://validator-suite.w3.org/" title="Check your website with the W3C Validator Suite"><img src="https://validator-suite.w3.org/icons/vs-blue-256.png" alt="W3C Validator Suite" /></a> If you need more extensive validation services beyond what our free Validator service can accommodate, please consider our premium service, <a href="https://validator-suite.w3.org/">W3C Validator Suite</a>. </p> </div><!-- result --> </div><!-- results_container --> <address> <a href="http://validator.w3.org/check?uri=referer"><img src="http://www.w3.org/Icons/valid-xhtml10" height="31" width="88" alt="Valid XHTML 1.0!" /></a> <a title="Send Feedback for the W3C Markup Validation Service" href="/feedback.html">The W3C Validator Team</a><br /> </address> </body> </html> * Closing connection 0