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arp fixes for #70 (#71)

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This commit is contained in:
Pat Whittingslow
2026-04-11 11:08:06 -03:00
committed by GitHub
parent 68907ef898
commit 68461b4416
5 changed files with 46 additions and 24 deletions
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x/xnet/stack-async.go
+13 -7
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@@ -358,14 +358,20 @@ func (s *StackAsync) DialTCP(conn *tcp.Conn, localPort uint16, addrp netip.AddrP
defer s.mu.Unlock()
var mac []byte
if s.subnet.Contains(addrp.Addr()) {
mac = make([]byte, 6)
ip := addrp.Addr().As4()
// StartQuery starts an ARP query for addresses in this network.
// On finishing query MAC is set and thus the StackPort will allow encapsulating
// data on that connection.
err = s.arp.StartQuery(mac, ip[:])
if err != nil {
return err
hw, err := s.arp.QueryResult(ip[:])
mac = make([]byte, 6)
if err == nil {
// Query exists, use pre-existing result.
copy(mac, hw)
} else {
// StartQuery starts an ARP query for addresses in this network.
// On finishing query MAC is set and thus the StackPort will allow encapsulating
// data on that connection.
err = s.arp.StartQuery(mac, ip[:])
if err != nil {
return err
}
}
}
err = conn.OpenActive(localPort, addrp, tcp.Value(s.prand32()))