Before this fix, it was noticed that the rclone webdav client did not
re-use HTTP connections when it should have been.
This turned out to be because rclone was not draining the HTTP bodies
when it was not expecting a response.
From the Go docs:
> If the returned error is nil, the Response will contain a non-nil
> Body which the user is expected to close. If the Body is not both
> read to EOF and closed, the Client's underlying RoundTripper
> (typically Transport) may not be able to re-use a persistent TCP
> connection to the server for a subsequent "keep-alive" request.
This fixes the problem by draining up to 10MB of data from an HTTP
response if the NoResponse flag is set, or at the end of a JSON or XML
response (which could have some whitespace on the end).
See: https://forum.rclone.org/t/webdav-with-persistent-connections/37024/
This changes crypt's use of sync.Pool: Instead of storing slices
it now stores pointers pointers fixed sized arrays.
This issue was reported by staticcheck:
SA6002 - Storing non-pointer values in sync.Pool allocates memory
A sync.Pool is used to avoid unnecessary allocations and reduce
the amount of work the garbage collector has to do.
When passing a value that is not a pointer to a function that accepts
an interface, the value needs to be placed on the heap, which means
an additional allocation. Slices are a common thing to put in sync.Pools,
and they're structs with 3 fields (length, capacity, and a pointer to
an array). In order to avoid the extra allocation, one should store
a pointer to the slice instead.
See: https://staticcheck.io/docs/checks#SA6002
The three linters deadcode, structcheck and varcheck we have been using are as of
gitlabci-lint version 1.49.0 (24 Aug 2022) marked as deprecated, and replaced by unused.
The linters staticcheck, gosimple, stylecheck and unused should combined correspond to
the checks performed by the stand-alone staticcheck tool, which is by default used for
linting in Visual Studio Code with the Go extension. We previously enabled the first
three, but skipped unused due to many reported issues.
See #6387 for more information.
These combined should correspond to the checks performed by the stand-alone
staticcheck tool, which is by default used for linting in Visual Studio Code
with the Go extension. One exception is the unused checks, which staticcheck
tool performs, but chose to not enabled here in rclone due to many reported
occurrences.
See #6387 for more information.
This change provides the ability to pass `env_auth` as a parameter to
the drive provider. This enables the provider to pull IAM
credentials from the environment or instance metadata. Previously if no
auth method was given it would default to requesting oauth.
