The fact that I am getting feature requests means people are actually using my post test server. This makes me happy 🙂 The most recent thing people asked for was multipart/form-data uploads. As an example for this behavior see my test form (which was submitted by a user who was super helpful).
Update:This poor post has been imported from blog to blog over the years and as a result this code snippet has been horribly maimed and will not be formatted. C’est la vie.
<form action="http://posttestserver.com/post.php?dir=example" method="post" enctype="multipart/form-data">
File: <input type="file" name="submitted">
<input type="hidden" name="someParam" value="someValue"/>
<input type="submit" value="send">
The resulting output should contain information about the file and a link to the actual uploaded file. Remember, this data is public and you should NOT upload private data.