coredns/middleware/proxy/exchanger.go
varyoo c5efd45720 middleware/proxy: dnstap (#786)
* experimental dnstap support into proxy

* proxy reports dnstap errors

* refactoring

* add a message builder for less dnstap code

* msg lint

* context

* proxy by DNS: dnstap comments

* TapBuilder

* resolves conflict

* dnstap into ServeDNS

* testing

* more tests

* `go lint`

* doc update
2017-09-01 12:41:41 +02:00

22 lines
577 B
Go

package proxy
import (
"context"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
)
// Exchanger is an interface that specifies a type implementing a DNS resolver that
// can use whatever transport it likes.
type Exchanger interface {
Exchange(ctx context.Context, addr string, state request.Request) (*dns.Msg, error)
Protocol() string
// Transport returns the only transport protocol used by this Exchanger or "".
// If the return value is "", Exchange must use `state.Proto()`.
Transport() string
OnStartup(*Proxy) error
OnShutdown(*Proxy) error
}