Files
coredns/plugin/cancel
Miek Gieben ba5d4a6372 plugin register (#3321)
These plugins where missed in #3287 because their setup is done in a file
other than setup.go

Signed-off-by: Miek Gieben <miek@miek.nl>
2019-09-28 10:40:43 +01:00
..
2019-08-24 18:14:25 +00:00
2019-09-28 10:40:43 +01:00

cancel

Name

cancel - cancels a request's context after 5001 milliseconds.

Description

The cancel plugin creates a canceling context for each request. It adds a timeout that gets triggered after 5001 milliseconds.

The 5001 number was chosen because the default timeout for DNS clients is 5 seconds, after that they give up.

A plugin interested in the cancellation status should call plugin.Done() on the context. If the context was canceled due to a timeout the plugin should not write anything back to the client and return a value indicating CoreDNS should not either; a zero return value should suffice for that.

cancel [TIMEOUT]
  • TIMEOUT allows setting a custom timeout. The default timeout is 5001 milliseconds (5001 ms)

Examples

example.org {
    cancel
    whoami
}

Or with a custom timeout:

example.org {
    cancel 1s
    whoami
}

Also See

The Go documentation for the context package.