38 lines
1.1 KiB
Go
38 lines
1.1 KiB
Go
// +build go1.11
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// +build aix darwin dragonfly freebsd linux netbsd openbsd
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package reuseport
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import (
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"context"
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"net"
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"syscall"
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"github.com/coredns/coredns/plugin/pkg/log"
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"golang.org/x/sys/unix"
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)
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func control(network, address string, c syscall.RawConn) error {
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c.Control(func(fd uintptr) {
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if err := unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {
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log.Warningf("Failed to set SO_REUSEPORT on socket: %s", err)
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}
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})
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return nil
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}
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// Listen announces on the local network address. See net.Listen for more information.
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// If SO_REUSEPORT is available it will be set on the socket.
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func Listen(network, addr string) (net.Listener, error) {
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lc := net.ListenConfig{Control: control}
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return lc.Listen(context.Background(), network, addr)
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}
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// ListenPacket announces on the local network address. See net.ListenPacket for more information.
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// If SO_REUSEPORT is available it will be set on the socket.
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func ListenPacket(network, addr string) (net.PacketConn, error) {
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lc := net.ListenConfig{Control: control}
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return lc.ListenPacket(context.Background(), network, addr)
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}
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