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package specgen
import (
"net"
"strconv"
"github.com/pkg/errors"
)
// Find a random, open port on the host
func GetRandomPort() (int, error) {
l, err := net.Listen("tcp", ":0")
if err != nil {
return 0, errors.Wrapf(err, "unable to get free TCP port")
}
defer l.Close()
_, randomPort, err := net.SplitHostPort(l.Addr().String())
if err != nil {
return 0, errors.Wrapf(err, "unable to determine free port")
}
rp, err := strconv.Atoi(randomPort)
if err != nil {
return 0, errors.Wrapf(err, "unable to convert random port to int")
}
return rp, nil
}
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