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package forward
import (
"context"
"sync"
"testing"
"github.com/coredns/coredns/plugin/pkg/dnstest"
"github.com/coredns/coredns/plugin/test"
"github.com/coredns/coredns/request"
"github.com/miekg/dns"
)
func TestProxyClose(t *testing.T) {
s := dnstest.NewServer(func(w dns.ResponseWriter, r *dns.Msg) {
ret := new(dns.Msg)
ret.SetReply(r)
w.WriteMsg(ret)
})
defer s.Close()
req := new(dns.Msg)
req.SetQuestion("example.org.", dns.TypeA)
state := request.Request{W: &test.ResponseWriter{}, Req: req}
ctx := context.TODO()
repeatCnt := 1000
for repeatCnt > 0 {
repeatCnt--
p := NewProxy(s.Addr, nil /* no TLS */)
p.start(hcDuration)
var wg sync.WaitGroup
wg.Add(5)
go func() {
p.connect(ctx, state, false, false)
wg.Done()
}()
go func() {
p.connect(ctx, state, true, false)
wg.Done()
}()
go func() {
p.close()
wg.Done()
}()
go func() {
p.connect(ctx, state, false, false)
wg.Done()
}()
go func() {
p.connect(ctx, state, true, false)
wg.Done()
}()
wg.Wait()
if p.inProgress != 0 {
t.Errorf("unexpected query in progress")
}
if p.state != stopped {
t.Errorf("unexpected proxy state, expected %d, got %d", stopped, p.state)
}
}
}
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