org.springframework.data.gemfire.util.NetworkUtils Maven / Gradle / Ivy
/*
* Copyright 2018-2020 the original author or authors.
*
* 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
*
* https://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.springframework.data.gemfire.util;
/**
* Abstract utility class providing functions for networking.
*
* @author John Blum
* @since 2.2.0
*/
public abstract class NetworkUtils {
public static final String INVALID_PORT_MESSAGE =
"Port [%d] must be greater than equal to 0 and less than 65536";
public static final String INVALID_NO_EPHEMERAL_PORT_MESSAGE =
"Port [%d] must be greater than 0 and less than 65536";
/**
* Determines whether the given {@link Integer#TYPE port} is valid.
*
* Technically, port 0 is valid too but no client would use port 0 (the ephemeral port) to connect to a service.
*
* @param port port to evaluate.
* @return a boolean value indicating whether the {@link Integer#TYPE port} is valid or not.
*/
public static boolean isValidPort(int port) {
return port > -1 && port < 65536;
}
public static boolean isValidNonEphemeralPort(int port) {
return isValidPort(port) && port > 0;
}
}