Java Socket Create createSocketAddr(String target)

Description

Util method to build socket addr from either: <host>:<port> <scheme>://<host>:<port>/<path>

License

Apache License

Declaration

public static InetSocketAddress createSocketAddr(String target) 

Method Source Code

//package com.java2s;
/*//  ww w  .  ja  va  2 s.  c om
 * 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.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.URI;
import java.net.UnknownHostException;

public class Main {
    /**
     * Util method to build socket addr from either:
     * <host>:<port>
     * <scheme>://<host>:<port>/<path>
     */
    public static InetSocketAddress createSocketAddr(String target) {
        return createSocketAddr(target, null);
    }

    /**
     * Create an InetSocketAddress from the given target string. If the string
     * cannot be parsed correctly, the <code>configName</code> parameter is used
     * as part of the exception message, allowing the user to better diagnose
     * the misconfiguration.
     *
     * @param target     a string of either "host" or "host:port"
     * @param configName the name of the configuration from which
     *                   <code>target</code> was loaded. This is used in the
     *                   exception message in the case that parsing fails.
     */
    public static InetSocketAddress createSocketAddr(String target, String configName) {
        String helpText = "";
        if (configName != null)
            helpText = " (configuration property '" + configName + "')";

        if (target == null)
            throw new IllegalArgumentException("Target address cannot be null." + helpText);

        boolean hasScheme = target.contains("://");
        URI uri;
        try {
            uri = hasScheme ? URI.create(target) : URI.create("dummyscheme://" + target);
        } catch (IllegalArgumentException e) {
            throw new IllegalArgumentException(
                    "Does not contain a valid host:port authority: " + target + helpText);
        }

        String path = uri.getPath();
        String host = uri.getHost();
        if ((!hasScheme && path != null && !path.isEmpty()) || host == null)
            throw new IllegalArgumentException(
                    "Does not contain a valid host:port authority: " + target + helpText);

        int port = uri.getPort();
        if (port < 0)
            port = 0;

        InetSocketAddress addr;
        try {
            addr = new InetSocketAddress(InetAddress.getByName(host), port);
        } catch (UnknownHostException e) {
            addr = InetSocketAddress.createUnresolved(host, port);
        }
        return addr;
    }
}

Related

1. createSocket(String host, int port)
2. createSocket(String[] hostPort)
3. createSocketAddr(String addr)
4. createSocketAddr(String target)
5. createSocketAddress()
6. createSocketAddress(String server)
7. createSocketAddrForHost(String hostName, int port)
8. createSocketServer(int port)