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close resolver connection

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This commit is contained in:
ginuerzh 2020-01-17 10:11:21 +08:00
parent 694c05b50a
commit f1bad4d07b
1 changed files with 4 additions and 10 deletions
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14
resolver.go
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@ -623,17 +623,12 @@ func (ex *dnsExchanger) Exchange(ctx context.Context, query []byte) ([]byte, err
return nil, err
}
c.SetDeadline(time.Now().Add(ex.options.timeout - time.Since(t)))
mq := &dns.Msg{}
if err = mq.Unpack(query); err != nil {
return nil, err
}
defer c.Close()
conn := &dns.Conn{
Conn: c,
}
if err = conn.WriteMsg(mq); err != nil {
if _, err = conn.Write(query); err != nil {
return nil, err
}
@ -683,18 +678,17 @@ func (ex *dnsTCPExchanger) Exchange(ctx context.Context, query []byte) ([]byte,
return nil, err
}
c.SetDeadline(time.Now().Add(ex.options.timeout - time.Since(t)))
defer c.Close()
conn := &dns.Conn{
Conn: c,
}
if _, err = conn.Write(query); err != nil {
return nil, err
}
mr, err := conn.ReadMsg()
if err != nil {
log.Log("[dns] exchange", err)
return nil, err
}
@ -753,11 +747,11 @@ func (ex *dotExchanger) Exchange(ctx context.Context, query []byte) ([]byte, err
return nil, err
}
c.SetDeadline(time.Now().Add(ex.options.timeout - time.Since(t)))
defer c.Close()
conn := &dns.Conn{
Conn: c,
}
if _, err = conn.Write(query); err != nil {
return nil, err
}