yggdrasil-network/yggdrasil-go
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Don't leak interface name via multicast, ensure zone is always correct when dialling link-local

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This commit is contained in:
Neil Alexander 2019-03-09 09:24:52 +00:00
parent a0e6edd219
commit 03eec4b14d
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GPG key ID: A02A2019A2BB0944
2 changed files with 17 additions and 9 deletions
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8
src/yggdrasil/multicast.go
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@ -166,6 +166,7 @@ func (m *multicast) announce() {
// Get the listener details and construct the multicast beacon
lladdr := listener.listener.Addr().String()
if a, err := net.ResolveTCPAddr("tcp6", lladdr); err == nil {
a.Zone = ""
destAddr.Zone = iface.Name
msg := []byte(a.String())
m.sock.WriteTo(msg, nil, destAddr)
@ -208,8 +209,9 @@ func (m *multicast) listen() {
if addr.IP.String() != from.IP.String() {
continue
}
addr.Zone = from.Zone
saddr := addr.String()
m.core.link.call("tcp://"+saddr, addr.Zone)
addr.Zone = ""
if err := m.core.link.call("tcp://"+addr.String(), from.Zone); err != nil {
m.core.log.Debugln("Call from multicast failed:", err)
}
}
}