TrueCloudLab/coredns
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middleware/httpproxy: disable v6 lookup

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Don't lookup the AAAA dns.google.com.
This commit is contained in:
Miek Gieben 2016-11-30 20:12:14 +00:00
parent b85c6788dd
commit ada704e0ae
1 changed files with 2 additions and 16 deletions

18
middleware/httpproxy/google.go
View file

@ -109,13 +109,8 @@ func (g *google) OnStartup() error {
if err != nil { if err != nil {
return err return err
} }
r.SetQuestion(dns.Fqdn(ghost), dns.TypeAAAA)
new6, err := g.lookup(r)
if err != nil {
return err
}
up, _ := newSimpleUpstream(append(new, new6...)) up, _ := newSimpleUpstream(new)
g.Lock() g.Lock()
g.addr = up g.addr = up
g.Unlock() g.Unlock()
@ -133,14 +128,8 @@ func (g *google) OnStartup() error {
log.Printf("[WARNING] Failed to lookup A records %q: %s", ghost, err) log.Printf("[WARNING] Failed to lookup A records %q: %s", ghost, err)
continue continue
} }
r.SetQuestion(dns.Fqdn(ghost), dns.TypeAAAA)
new6, err := g.lookup(r)
if err != nil {
log.Printf("[WARNING] Failed to lookup AAAA records %q: %s", ghost, err)
continue
}
up, _ := newSimpleUpstream(append(new, new6...)) up, _ := newSimpleUpstream(new)
g.Lock() g.Lock()
g.addr = up g.addr = up
g.Unlock() g.Unlock()
@ -188,9 +177,6 @@ func (g *google) lookup(r *dns.Msg) ([]string, error) {
if a, ok := an.(*dns.A); ok { if a, ok := an.(*dns.A); ok {
ret = append(ret, net.JoinHostPort(a.A.String(), "443")) ret = append(ret, net.JoinHostPort(a.A.String(), "443"))
} }
if a, ok := an.(*dns.AAAA); ok {
ret = append(ret, net.JoinHostPort(a.AAAA.String(), "443"))
}
} }
if len(ret) > 0 { if len(ret) > 0 {
return ret, nil return ret, nil