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package forward
import (
"sync/atomic"
"testing"
"github.com/coredns/coredns/plugin/pkg/dnstest"
"github.com/coredns/coredns/plugin/test"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
)
func TestLookupTruncated(t *testing.T) {
i := int32(0)
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
j := atomic.LoadInt32(&i)
atomic.AddInt32(&i, 1)
if j == 0 {
ret := new(dns.Msg)
ret.SetReply(r)
ret.Truncated = true
ret.Answer = append(ret.Answer, test.A("example.org. IN A 127.0.0.1"))
w.WriteMsg(ret)
return
}
ret := new(dns.Msg)
ret.SetReply(r)
ret.Answer = append(ret.Answer, test.A("example.org. IN A 127.0.0.1"))
w.WriteMsg(ret)
})
defer s.Close()
p := NewProxy(s.Addr, DNS)
f := New()
f.SetProxy(p)
defer f.Close()
state := request.Request{W: &test.ResponseWriter{}, Req: new(dns.Msg)}
resp, err := f.Lookup(state, "example.org.", dns.TypeA)
if err != nil {
t.Fatal("Expected to receive reply, but didn't")
}
// expect answer with TC
if !resp.Truncated {
t.Error("Expected to receive reply with TC bit set, but didn't")
}
if len(resp.Answer) != 1 {
t.Error("Expected to receive original reply, but answer is missing")
}
resp, err = f.Lookup(state, "example.org.", dns.TypeA)
if err != nil {
t.Fatal("Expected to receive reply, but didn't")
}
// expect answer without TC
if resp.Truncated {
t.Error("Expected to receive reply without TC bit set, but didn't")
}
}
func TestForwardTruncated(t *testing.T) {
i := int32(0)
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
j := atomic.LoadInt32(&i)
atomic.AddInt32(&i, 1)
if j == 0 {
ret := new(dns.Msg)
ret.SetReply(r)
ret.Truncated = true
ret.Answer = append(ret.Answer, test.A("example.org. IN A 127.0.0.1"))
w.WriteMsg(ret)
return
}
ret := new(dns.Msg)
ret.SetReply(r)
ret.Answer = append(ret.Answer, test.A("example.org. IN A 127.0.0.1"))
w.WriteMsg(ret)
})
defer s.Close()
f := New()
p1 := NewProxy(s.Addr, DNS)
f.SetProxy(p1)
p2 := NewProxy(s.Addr, DNS)
f.SetProxy(p2)
defer f.Close()
state := request.Request{W: &test.ResponseWriter{}, Req: new(dns.Msg)}
state.Req.SetQuestion("example.org.", dns.TypeA)
resp, err := f.Forward(state)
if err != nil {
t.Fatal("Expected to receive reply, but didn't")
}
// expect answer with TC
if !resp.Truncated {
t.Error("Expected to receive reply with TC bit set, but didn't")
}
if len(resp.Answer) != 1 {
t.Error("Expected to receive original reply, but answer is missing")
}
resp, err = f.Forward(state)
if err != nil {
t.Fatal("Expected to receive reply, but didn't")
}
// expect answer without TC
if resp.Truncated {
t.Error("Expected to receive reply without TC bit set, but didn't")
}
}
|
