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package test
import (
"testing"
"github.com/miekg/dns"
)
// Start 2 tests server, server A will proxy to B, server B is an CH server.
func TestProxyToChaosServer(t *testing.T) {
corefile := `.:0 {
chaos CoreDNS-001 miek@miek.nl
}
`
chaos, err := CoreDNSServer(corefile)
if err != nil {
t.Fatalf("could not get CoreDNS serving instance: %s", err)
}
udpChaos, _ := CoreDNSServerPorts(chaos, 0)
defer chaos.Stop()
corefileProxy := `.:0 {
proxy . ` + udpChaos + `
}
`
proxy, err := CoreDNSServer(corefileProxy)
if err != nil {
t.Fatalf("could not get CoreDNS serving instance")
}
udp, _ := CoreDNSServerPorts(proxy, 0)
defer proxy.Stop()
chaosTest(t, udpChaos)
chaosTest(t, udp)
// chaosTest(t, tcp, "tcp"), commented out because we use the original transport to reach the
// proxy and we only forward to the udp port.
}
func chaosTest(t *testing.T, server string) {
m := new(dns.Msg)
m.Question = make([]dns.Question, 1)
m.Question[0] = dns.Question{Qclass: dns.ClassCHAOS, Name: "version.bind.", Qtype: dns.TypeTXT}
r, err := dns.Exchange(m, server)
if err != nil {
t.Fatalf("Could not send message: %s", err)
}
if r.Rcode != dns.RcodeSuccess || len(r.Answer) == 0 {
t.Fatalf("Expected successful reply, got %s", dns.RcodeToString[r.Rcode])
}
if r.Answer[0].String() != `version.bind. 0 CH TXT "CoreDNS-001"` {
t.Fatalf("Expected version.bind. reply, got %s", r.Answer[0].String())
}
}
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