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/**
 * Copyright (C) 2011 Ovea 
 *
 * 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 com.ovea.tajin.io
/**
 * @author Mathieu Carbou ([email protected])
 */
class TcpPort {

    static boolean isFree(int port) {
        try {
            new ServerSocket(port).close()
            return true
        } catch (IOException ignored) {
        }
        return false
    }

    static int findFree(int min, int max) {
        Random r = new Random()
        max = max - min + 1
        while (true) {
            int p = min + r.nextInt(max)
            if (isFree(p)) {
                return p
            }
        }
    }

    static int findFree() {
        return findFree(1025, 65500)
    }
}