The headers set with --header and --header-download are added to
every request by the rclone transport, including redirect hops which
net/http makes to other hosts, so a credential passed with --header
for one host could be sent to any host that server chose to redirect
to.
The transport now walks the redirect chain net/http records on each
redirected request and, once the chain has visited a host other than
the one originally requested, removes the headers rather than adding
them.
Also restore the global --client-cert and --client-key config after
TestCertificates so its temporary files are not used by later tests.
In corporate environments, client certificates have short life times
for added security, and they get renewed automatically. This means
that client certificate can expire in the middle of long running
command such as `mount`.
This commit attempts to reload the client certificates 30s before they
expire.
This will be active for all backends which use HTTP.
The purpose of this is to make it easier to maintain and eventually to
allow the rclone backends to be re-used in other projects without
having to use the rclone configuration system.
The new code layout is documented in CONTRIBUTING.