Don't load XHTML images automatically
phenomenon
Unwilling disclosure of user IP address.
background analysis
Send HTML message with image file, using XML Console, to user or MUC.
\<message xmlns="jabber:client" to="test@conference.gajim.org" type="groupchat" id="fake lmc">
\<body>
https://gajim.org/imgs/logo_small.png
\</body>
\<html xmlns='http://jabber.org/protocol/xhtml-im'>
\<body xmlns='http://www.w3.org/1999/xhtml'>
\<img src='https://gajim.org/imgs/logo_small.png'
alt='logo_small.png'
title='logo_small.png'
height='100'
width='140'/>
\</body>
\</html>
\</message>
implementation recommendation
Gajim = 0.16 Do not load images from internet.
Gajim > 0.16 Add an Info-bar that would ask user whether to load image within message or replace image with a placeholder that prompt user to this issue.
Gajim > 0.16 Add support for [XEP:0231 XEP-0231: Bits of Binary]?
See [GajimChat:2013:08:08:19:58:31 Chatroom logs for gajim@conference.gajim.org (Thursday, August 08, 2013)].