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multicast, use the prebuilt interface map when checking active listeners (#707)

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Arceliar 2020-09-27 07:16:51 -05:00 committed by GitHub
parent 48f008a8e2
commit 33e3679458
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1 changed files with 7 additions and 11 deletions
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18
src/multicast/multicast.go
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@ -259,17 +259,13 @@ func (m *Multicast) _announce() {
continue continue
} }
// Find the interface that matches the listener // Find the interface that matches the listener
if intf, err := net.InterfaceByName(name); err == nil { if info, ok := m._interfaces[name]; ok {
if addrs, err := intf.Addrs(); err == nil { for _, addr := range info.addrs {
// Loop through the addresses attached to that listener and see if any if ip, _, err := net.ParseCIDR(addr.String()); err == nil {
// of them match the current address of the listener // Does the interface address match our listener address?
for _, addr := range addrs { if ip.Equal(listenaddr.IP) {
if ip, _, err := net.ParseCIDR(addr.String()); err == nil { found = true
// Does the interface address match our listener address? break
if ip.Equal(listenaddr.IP) {
found = true
break
}
} }
} }
} }