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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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8
src/multicast/multicast.go
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@ -259,11 +259,8 @@ 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
// of them match the current address of the listener
for _, addr := range addrs {
if ip, _, err := net.ParseCIDR(addr.String()); err == nil { if ip, _, err := net.ParseCIDR(addr.String()); err == nil {
// Does the interface address match our listener address? // Does the interface address match our listener address?
if ip.Equal(listenaddr.IP) { if ip.Equal(listenaddr.IP) {
@ -273,7 +270,6 @@ func (m *Multicast) _announce() {
} }
} }
} }
}
// If the address has not been found on the adapter then we should stop // If the address has not been found on the adapter then we should stop
// and clean up the TCP listener. A new one will be created below if a // and clean up the TCP listener. A new one will be created below if a
// suitable link-local address is found // suitable link-local address is found