{"id":2400,"date":"2003-02-15T17:04:51","date_gmt":"2003-02-15T20:04:51","guid":{"rendered":"http:\/\/brockerhoff.net\/bb\/viewtopic.php?p=261"},"modified":"2010-05-09T18:19:33","modified_gmt":"2010-05-09T21:19:33","slug":"re-trackbacks-are-up-i-think-4","status":"publish","type":"post","link":"https:\/\/brockerhoff.net\/blog\/2003\/02\/15\/re-trackbacks-are-up-i-think-4\/","title":{"rendered":"Re: Trackbacks are up &#8211; I think"},"content":{"rendered":"<p>I found out what was wrong. My trackback:ping URL contains a &#8216;&amp;&#8217; character which was not being escaped to &#8216;&amp;&#8217;, so the autodiscovery routine was falling back to the rdf:about URL, which contains the permalink instead of the trackback URL.<\/p>\n<p>In other words, here&#8217;s what the corrected trackback autodiscovery comment looks like now:<\/p>\n<pre><code>&lt;!--\r\n&lt;rdf:RDF xmlns:rdf=\"http:\/\/www.w3.org\/1999\/02\/22-rdf-syntax-ns#\"\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0xmlns:dc=\"http:\/\/purl.org\/dc\/elements\/1.1\/\"\r\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0xmlns:trackback=\"http:\/\/madskills.com\/public\/xml\/rss\/module\/trackback\/\"&gt;\r\n&lt;rdf:Description\r\n\u00a0 \u00a0 rdf:about=\"http:\/\/www.brockerhoff.net\/bb\/viewtopic.php?p=259#259\"\r\n\u00a0 \u00a0 dc:identifier=\"http:\/\/www.brockerhoff.net\/bb\/viewtopic.php?p=259#259\"\r\n\u00a0 \u00a0 dc:title=\"Re: Trackbacks are up - I think\"\r\n\u00a0 \u00a0 trackback:ping=\"http:\/\/www.brockerhoff.net\/bb\/posting.php?mode=track&amp;p=259\" \/&gt;\r\n&lt;\/rdf:RDF&gt;\r\n--&gt;<\/code><\/pre>\n<p>This is copied exactly from the <a href=\"http:\/\/www.movabletype.org\/docs\/mttrackback.html#autodiscovery%20of%20trackback%20ping%20urls\">Trackback autodiscovery example<\/a>. The question is, older versions of <a href=\"http:\/\/www.movabletype.org\/\">Movable Type<\/a> apparently used the rdf:about URL for the trackback ping&#8230; so shouldn&#8217;t that entry contain the trackback ping URL for backward compatibility, instead of the permalink?<\/p>\n<p><strong>Update:<\/strong> Ben Trott of <a href=\"http:\/\/www.movabletype.org\/\">Movable Type<\/a> informs me that the rdf:about field should contain the permalink. Apparently compatibility is not an issue&#8230;<\/p>\n<p><strong>Update:<\/strong> I was wrong&#8230; the &amp; must NOT be escaped. See <a href=\"\/bb\/viewtopic.php?p=268#268\">my post<\/a> above.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I found out what was wrong. My trackback:ping URL contains a &#8216;&amp;&#8217; character which was not being escaped to &#8216;&amp;&#8217;, so the autodiscovery routine was falling back to the rdf:about URL, which contains the permalink instead of the trackback URL. In other words, here&#8217;s what the corrected trackback autodiscovery comment looks like now: &lt;!&#8211; &lt;rdf:RDF [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-2400","post","type-post","status-publish","format-standard","hentry","category-meta"],"featured_image_src":null,"author_info":{"display_name":"Rainer Brockerhoff","author_link":"https:\/\/brockerhoff.net\/blog\/author\/rbrockerhoff\/"},"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1q3Zc-CI","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/posts\/2400","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/comments?post=2400"}],"version-history":[{"count":0,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/posts\/2400\/revisions"}],"wp:attachment":[{"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/media?parent=2400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/categories?post=2400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/brockerhoff.net\/blog\/wp-json\/wp\/v2\/tags?post=2400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}