001/* 002 * Copyright 2012-2017 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.boot.devtools.tunnel.server; 018 019/** 020 * Strategy interface to provide access to a port (which may change if an existing 021 * connection is closed). 022 * 023 * @author Phillip Webb 024 * @since 1.3.0 025 */ 026@FunctionalInterface 027public interface PortProvider { 028 029 /** 030 * Return the port number. 031 * @return the port number 032 */ 033 int getPort(); 034 035}