Example usage for java.net ProxySelector connectFailed

Introduction

In this page you can find the example usage for java.net ProxySelector connectFailed.

Prototype

public abstract void connectFailed(URI uri, SocketAddress sa, IOException ioe);

Source Link

Document

Called to indicate that a connection could not be established to a proxy/socks server.

Usage

From source file:com.microsoft.azure.servicebus.samples.queueswithproxy.QueuesWithProxy.java

public static int runApp(String[] args, Function<String, Integer> run) {
    try {/*w ww  . j a v  a  2  s.  c o m*/

        String connectionString;
        String proxyHostName;
        String proxyPortString;
        int proxyPort;

        // Add command line options and create parser
        Options options = new Options();
        options.addOption(new Option("c", true, "Connection string"));
        options.addOption(new Option("n", true, "Proxy hostname"));
        options.addOption(new Option("p", true, "Proxy port"));

        CommandLineParser clp = new DefaultParser();
        CommandLine cl = clp.parse(options, args);

        // Pull variables from command line options or environment variables
        connectionString = getOptionOrEnv(cl, "c", SB_SAMPLES_CONNECTIONSTRING);
        proxyHostName = getOptionOrEnv(cl, "n", SB_SAMPLES_PROXY_HOSTNAME);
        proxyPortString = getOptionOrEnv(cl, "p", SB_SAMPLES_PROXY_PORT);

        // Check for bad input
        if (StringUtil.isNullOrEmpty(connectionString) || StringUtil.isNullOrEmpty(proxyHostName)
                || StringUtil.isNullOrEmpty(proxyPortString)) {
            HelpFormatter formatter = new HelpFormatter();
            formatter.printHelp("run jar with", "", options, "", true);
            return 2;
        }

        if (!NumberUtils.isCreatable(proxyPortString)) {
            System.err.println("Please provide a numerical value for the port");
        }
        proxyPort = Integer.parseInt(proxyPortString);

        // ProxySelector set up for an HTTP proxy
        final ProxySelector systemDefaultSelector = ProxySelector.getDefault();
        ProxySelector.setDefault(new ProxySelector() {
            @Override
            public List<Proxy> select(URI uri) {
                if (uri != null && uri.getHost() != null && uri.getHost().equalsIgnoreCase(proxyHostName)) {
                    List<Proxy> proxies = new LinkedList<>();
                    proxies.add(new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyHostName, proxyPort)));
                    return proxies;
                }
                return systemDefaultSelector.select(uri);
            }

            @Override
            public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
                if (uri == null || sa == null || ioe == null) {
                    throw new IllegalArgumentException("Arguments can't be null.");
                }
                systemDefaultSelector.connectFailed(uri, sa, ioe);
            }
        });

        return run.apply(connectionString);
    } catch (Exception e) {
        System.out.printf("%s", e.toString());
        return 3;
    }
}

---