Files
coredns/plugin/whoami
Miek Gieben 5735292406 Do Compress only when need in request.Scrub (#1760)
* Remove Compress by default

Set Compress = true in Scrub only when the message doesn not fit the
advertized buffer. Doing compression is expensive, so try to avoid it.

Master vs this branch
pkg: github.com/coredns/coredns/plugin/cache
BenchmarkCacheResponse-2   	   50000	     24774 ns/op

pkg: github.com/coredns/coredns/plugin/cache
BenchmarkCacheResponse-2   	  100000	     21960 ns/op

* and make it compile
2018-05-01 21:04:06 +01:00
..
2018-02-08 10:55:51 +00:00
2018-01-04 12:53:07 +00:00
2018-02-28 19:56:14 -08:00
2018-02-28 19:56:14 -08:00

whoami

Name

whoami - returns your resolver's local IP address, port and transport.

Description

The whoami plugin is not really that useful, but can be used for having a simple (fast) endpoint to test clients against. When whoami returns a response it will have your client's IP address the additional section as either an A or AAAA record.

The reply always has an empty answer section. The port and transport are included in the additional section as a SRV record, transport can be "tcp" or "udp".

._<transport>.qname. 0 IN SRV 0 0 <port> .

The whoami plugin will respond to every A or AAAA query, regardless of the query name.

If CoreDNS can't find a Corefile on startup this is the default plugin that gets loaded. As such it can be used to check that CoreDNS is responding to queries. Other than that this plugin is of limited use in production.

Syntax

whoami

Examples

Start a server on the default port and load the whoami plugin.

. {
    whoami
}

When queried for "example.org A", CoreDNS will respond with:

;; QUESTION SECTION:
;example.org.   IN       A

;; ADDITIONAL SECTION:
example.org.            0       IN      A       10.240.0.1
_udp.example.org.       0       IN      SRV     0 0 40212