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Fix: dns request panic and close #527

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This commit is contained in:
Dreamacro 2020-03-24 10:13:53 +08:00
parent 86dfb6562c
commit 518354e7eb
1 changed files with 4 additions and 1 deletions
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5
dns/resolver.go
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@ -115,7 +115,7 @@ func (r *Resolver) Exchange(m *D.Msg) (msg *D.Msg, err error) {
} }
}() }()
ret, err, _ := r.group.Do(q.String(), func() (interface{}, error) { ret, err, shared := r.group.Do(q.String(), func() (interface{}, error) {
isIPReq := isIPRequest(q) isIPReq := isIPRequest(q)
if isIPReq { if isIPReq {
return r.fallbackExchange(m) return r.fallbackExchange(m)
@ -126,6 +126,9 @@ func (r *Resolver) Exchange(m *D.Msg) (msg *D.Msg, err error) {
if err == nil { if err == nil {
msg = ret.(*D.Msg) msg = ret.(*D.Msg)
if shared {
msg = msg.Copy()
}
} }
return return