http://bugs.winehq.org/show_bug.cgi?id=24358
--- Comment #26 from Mike Masterson themikemasterson@gmail.com 2012-07-31 15:21:10 CDT --- I know earlier mention was made of using a real torrent client. Did you ever locate them?
the .torrent files for patching are found in $HOME/.wine/drive_c/users/your_user/My Games/FINAL FANTASY XIV/downloads/ffxiv/
For me, $HOME/.wine/drive_c/your_user links to ~/ for me.
2d2a390f/metainfo has the .torrent for the latest boot client. 48eca647/metainfo has the 15 or so (currently) torrents for updating the client.
I may not be able to help with the winhttp trace, but that might help. Perhaps an updated boot client will get past the issues.