syncthing/vendor/github.com/calmh/gateway/gateway_windows.go

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package gateway
import (
"net"
"os/exec"
)
func DiscoverGateway() (ip net.IP, err error) {
routeCmd := exec.Command("route", "print", "0.0.0.0")
output, err := routeCmd.CombinedOutput()
if err != nil {
return nil, err
}
return parseRoutePrint(output)
}