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Try to SO_REUSEPORT on UNIX platforms
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@ -1,6 +1,7 @@
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package yggdrasil
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import (
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"context"
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"fmt"
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"net"
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"time"
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@ -35,7 +36,10 @@ func (m *multicast) start() error {
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return err
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}
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listenString := fmt.Sprintf("[::]:%v", addr.Port)
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conn, err := net.ListenPacket("udp6", listenString)
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lc := net.ListenConfig{
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Control: multicastReuse,
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}
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conn, err := lc.ListenPacket(context.Background(), "udp6", listenString)
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if err != nil {
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return err
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}
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9
src/yggdrasil/multicast_other.go
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9
src/yggdrasil/multicast_other.go
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@ -0,0 +1,9 @@
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// +build !linux,!darwin,!netbsd,!freebsd,!openbsd,!dragonflybsd
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package yggdrasil
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import "syscall"
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func multicastReuse(network string, address string, c syscall.RawConn) error {
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return nil
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}
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22
src/yggdrasil/multicast_unix.go
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22
src/yggdrasil/multicast_unix.go
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@ -0,0 +1,22 @@
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// +build linux darwin netbsd freebsd openbsd dragonflybsd
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package yggdrasil
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import "syscall"
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import "golang.org/x/sys/unix"
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func multicastReuse(network string, address string, c syscall.RawConn) error {
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var control error
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var reuseport error
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control = c.Control(func(fd uintptr) {
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reuseport = unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
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})
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switch {
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case reuseport != nil:
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return reuseport
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default:
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return control
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}
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}
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