When using *blocking* I/O wait_for_* functions need to be
able to not read past their awaited packet.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This is supposed to contain only the parts necessary to
communicate with the server via the proxmox backup protocol.
(Including the chunker, which is currently `include!()`d
from the main crate.
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
