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middleware/whoami: add (#264)

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Add a new middleware that tells you who you are; IP, port and transport
is echoed back.

Also some various cleanup and documentation improvements while at it:

* ResponseWriter: improve the documentation of these helper functions.
* And add an NextHandler for use in tests. Make chaos_test.go and
* whoam_test.go use it.
This commit is contained in:
Miek Gieben 2016-09-17 17:09:05 +01:00 • committed by GitHub
parent ed907d3327
commit 30fd224504
10 changed files with 219 additions and 10 deletions
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4
middleware/middleware.go
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@ -19,9 +19,13 @@ type (
//
// If ServeDNS writes to the response body, it should return a status
// code. If the status code is not one of the following:
//
// * SERVFAIL (dns.RcodeServerFailure)
//
// * REFUSED (dns.RecodeRefused)
//
// * FORMERR (dns.RcodeFormatError)
//
// * NOTIMP (dns.RcodeNotImplemented)
//
// CoreDNS assumes *no* reply has yet been written. All other response