FreePortFinder.java
/*-
* #%L
* io.earcam.utilitarian.net
* %%
* Copyright (C) 2017 earcam
* %%
* SPDX-License-Identifier: (BSD-3-Clause OR EPL-1.0 OR Apache-2.0 OR MIT)
*
* You <b>must</b> choose to accept, in full - any individual or combination of
* the following licenses:
* <ul>
* <li><a href="https://opensource.org/licenses/BSD-3-Clause">BSD-3-Clause</a></li>
* <li><a href="https://www.eclipse.org/legal/epl-v10.html">EPL-1.0</a></li>
* <li><a href="https://www.apache.org/licenses/LICENSE-2.0">Apache-2.0</a></li>
* <li><a href="https://opensource.org/licenses/MIT">MIT</a></li>
* </ul>
* #L%
*/
package io.earcam.utilitarian.net;
import java.net.ServerSocket;
import io.earcam.unexceptional.Closing;
public final class FreePortFinder {
private FreePortFinder()
{
throw new IllegalStateException("not happening");
}
public static int findFreePort()
{
return Closing.closeAfterApplying(ServerSocket::new, 0, ServerSocket::getLocalPort);
}
}