When PS5Upload Files is opened from a phone or PC on the LAN (not from the
console itself), Files offers Upload here and Download.
Upload: POST /api/upload/begin checks path policy, the folder, an existing
name (409 exists / not_a_file) and free space (507) before any byte is sent
and reserves the one upload slot (409 busy; forgotten after 30 s); the bytes
follow as POST /api/upload/data?id= (streamed, idle timeout 20 s), written
to a temp file beside the target and renamed only when complete, so a cancel
or a dropped client leaves nothing. /api/upload/cancel frees a reservation.
The page sends files (or a folder, where the browser can pick one) one at a
time with progress, Skip this file / Stop, and Skip / Keep both / Replace
for names already there.
Download: /api/download/begin hands out a /dl/<ticket>/<name> link (128-bit,
for that item only, 60 s after last use) that the browser saves with a plain
navigation: a file with Content-Length and Range, a folder as a .tar streamed
as it is read (pax for long names and > 8 GiB sizes, links and other mounts
left out). One download at a time; trust store and its ancestors refused.
Measured on the Phat (13.60, LAN), 1 GiB: upload 66-75 MiB/s, download
111 MiB/s, folder .tar 101 MiB/s. Strings in all 21 locales.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RxCGb8Asp1A1AQYiv1kbgS
