Java HTTP Port Find canConnect(String host, int port)

Description

can Connect

License

Open Source License

Declaration

public static boolean canConnect(String host, int port) 

Method Source Code

//package com.java2s;
/**/*from  w  w  w . java 2s.  co m*/
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * 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.
 */

import java.io.InputStream;

import java.net.InetSocketAddress;
import java.net.Socket;

public class Main {
    public static boolean canConnect(String host, int port) {
        InetSocketAddress address = new InetSocketAddress(host, Integer.valueOf(port));
        InetSocketAddress local = new InetSocketAddress(0);

        InputStream in = null;

        try (Socket socket = new Socket()) {
            socket.bind(local);
            socket.connect(address, 3000);
            in = socket.getInputStream();

            return true;
        } catch (Exception e) {
        }

        finally {
            if (in != null) {
                try {
                    in.close();
                } catch (Exception e) {
                }
            }
        }

        return false;
    }
}

Related

1. availablePort()
2. availablePort(int port)
3. availablePort(int pPort)
4. availablePort(int prefered)
5. canConnect(String host, int port)
6. canConnectOn(String host, int port)
7. createUnresolved(String host, int port)
8. doSend(String command, String server, String port)
9. executeHttpCommand(String host, int port, String request, String charset)