Webmention Rocks sender test

This post links to webmention.rocks sender discovery tests to validate the outgoing webmention pipeline end to end. It is hidden from feeds, the homepage, and tag indexes.

• Test 1: HTTP Link header, unquoted rel, relative URL
• Test 2: HTTP Link header, unquoted rel, absolute URL
• Test 3: HTML <link> tag, relative URL
• Test 4: HTML <link> tag, absolute URL