Function findFreePort

core/java/jdwp/test/test.go:39–46

findFreePort returns a currently free TCP port on the localhost. There are two potential issues with this function: * There is the potential for the port to be taken between the function returning and the port actually being used. * The system _may_ hold on to the socket after it has been told to cl

()

// * The system _may_ hold on to the socket after it has been told to close.
// Because of these issues, there is a potential for flakiness.
func findFreePort() (int, error) {
	dummy, err := net.Listen("tcp", ":0")
	if err != nil {
		return 0, err
	}
	defer dummy.Close()
	return dummy.Addr().(*net.TCPAddr).Port, nil
}

// JavaSource is a map of file name 'foo.java' to the source code.
type JavaSource map[string]string