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Provides common utility functions
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/*
* Copyright (c) CQSE GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.conqat.lib.commons.net;
import java.io.IOException;
import java.net.ServerSocket;
/**
* Utility methods used in conjunction with sockets.
*
* @author hummelb
*/
public class SocketUtils {
/** Checks whether the given TCP port is available. */
public static boolean isFreePort(int portNumber) {
try (ServerSocket socket = new ServerSocket(portNumber)) {
socket.setReuseAddress(true);
return true;
} catch (IOException e) {
return false;
}
}
/** Returns a new free TCP port number */
public static int getFreePort() throws IOException {
try (ServerSocket socket = new ServerSocket(0)) {
socket.setReuseAddress(true);
return socket.getLocalPort();
}
}
}