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package caddy
import (
"context"
"net"
"syscall"
"time"
"go.uber.org/zap"
"golang.org/x/sys/unix"
)
// ListenTimeout is the same as Listen, but with a configurable keep-alive timeout duration.
func ListenTimeout(network, addr string, keepalivePeriod time.Duration) (net.Listener, error) {
// check to see if plugin provides listener
if ln, err := getListenerFromPlugin(network, addr); err != nil || ln != nil {
return ln, err
}
config := &net.ListenConfig{Control: reusePort, KeepAlive: keepalivePeriod}
return config.Listen(context.Background(), network, addr)
}
func reusePort(network, address string, conn syscall.RawConn) error {
return conn.Control(func(descriptor uintptr) {
if err := unix.SetsockoptInt(int(descriptor), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1); err != nil {
Log().Error("setting SO_REUSEPORT",
zap.String("network", network),
zap.String("address", address),
zap.Uintptr("descriptor", descriptor),
zap.Error(err))
}
})
}
|
