Resume data ¶
Using the functions torrent::Download::hash_check(true) and torrent::Download::hash_resume_save() the client can tell the library to load and save various data that is useful when resuming a download. To ignore resume data call torrent::Download::hash_check(true).
The resume data is stored in the bencoded torrent as a dictionary under the key "libtorrent resume". All the following items are within that dictionary.
Completed chunks ¶
When resuming the library will skip hash checking for chunk ranges that have valid resume data. The file modification time-stamp is stored with the resume data, and ranges containing files whose stored time-stamp does not exactly match what is on the disk it will be invalidated. If the file size does not match it will also invalidate the range.
Peer addresses ¶
Peer addresses that are contained in torrent::AvailableList will be saved, which will includes connected peers as their addresses are copied over when a torrent is stopped.
Files ¶
Various file related information is stored in a list under the key "files". This list exactly matches the file list in the original torrent.
- mtime: File modification time-stamp as an integer.
- priority: The file priority as an integer between [0,3>.
