package ca.uhn.fhir.jaxrs.server.example; import java.io.IOException; import java.net.ServerSocket; import java.util.ArrayList; import java.util.List; /** * Provides server ports */ public class RandomServerPortProvider { private static List<Integer> ourPorts = new ArrayList<Integer>(); public static int findFreePort() { ServerSocket server; try { server = new ServerSocket(0); int port = server.getLocalPort(); ourPorts.add(port); server.close(); Thread.sleep(500); return port; } catch (IOException e) { throw new Error(e); } catch (InterruptedException e) { throw new Error(e); } } public static List<Integer> list() { return ourPorts; } }