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