XEP-Remarks/XEP-0363: HTTP File Upload
This is a page for information about XEP-Remarks/XEP-0363: HTTP File Upload, including errata, comments, questions, and implementation experience.
Does not use XEP-0131 for headers
The put element does not re-use "XEP-0131: Stanza Headers and Internet Metadata" as existing building block for headers.
Unclear service discovery
Examples show file upload offered on a subdomain, but there should be no reason why it could not be offered on the users bare host JID.
No retention info
Users have no way to know, nor influence, how long a file is stored.