Example usage for java.net ServerSocket ServerSocket

Introduction

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

Prototype

public ServerSocket(int port) throws IOException

Source Link

Document

Creates a server socket, bound to the specified port.

Usage

From source file:org.Cherry.Modules.Web.Engine.WebEngine.java

public ServerSocket getServerSocket() {
    if (null == _serverSocket) {
        try {/*from  ww w.  j av  a  2s  .c o  m*/
            _serverSocket = new ServerSocket(getPort());
        } catch (final IOException e) {
            throw new IllegalStateException(e);
        }

        info("Listening on port [{}]", _serverSocket.getLocalPort());
    }

    return _serverSocket;
}

From source file:com.github.podd.resources.test.AbstractResourceImplTest.java

private static synchronized int getFreePort() {
    int result = -1;
    while (result <= 0) {
        // Avoid infinite loops when the majority of legitimate ports have been tried already
        // and the test suite is too big or broken somehow.
        Assert.assertTrue("No free ports left for parallel tests",
                AbstractResourceImplTest.usedPorts.size() < 50000);
        try (ServerSocket ss = new ServerSocket(0)) {
            ss.setReuseAddress(true);// ww  w.j  a  v  a2s.c  om
            result = ss.getLocalPort();
            if (AbstractResourceImplTest.usedPorts.contains(result)) {
                result = -1;
            } else {
                // If the next port was already in used ports then the following will return
                // false and we will set result to -1
                if (AbstractResourceImplTest.usedPorts.add(result)) {
                    try (DatagramSocket ds = new DatagramSocket(result);) {
                        ds.setReuseAddress(true);
                    }
                } else {
                    result = -1;
                }
            }
        } catch (final IOException e) {
            result = -1;
        }
    }
    return result;
}

From source file:RedPenRunner.java

private static boolean isPortTaken(int portNum) {
    boolean portTaken = false;
    try (ServerSocket socket = new ServerSocket(portNum)) {
        // do nothing
    } catch (IOException e) {
        System.err.println("Detect: port is taken"); // TODO: use logger
        portTaken = true;/*  w  w w.j  a  v  a2 s  .co  m*/
    }
    return portTaken;
}

From source file:com.subgraph.vega.internal.http.proxy.HttpProxy.java

@Override
public void startProxy() {
    try {/*from ww  w  . ja v a 2  s .c  o  m*/
        logger.info("Listening on port " + listenPort);
        serverSocket = new ServerSocket(listenPort);
        proxyThread = new Thread(createProxyLoopRunnable());
        proxyThread.start();
    } catch (IOException e) {
        logger.log(Level.WARNING, "IO error creating listening socket: " + e.getMessage(), e);
    }
}

From source file:com.hortonworks.registries.auth.client.AuthenticatorTestCase.java

protected int getLocalPort() throws Exception {
    ServerSocket ss = new ServerSocket(0);
    int ret = ss.getLocalPort();
    ss.close();/*from   ww  w  .  j a va  2s .  c o m*/
    return ret;
}

From source file:org.apache.htrace.impl.HTracedProcess.java

private HTracedProcess(Builder builder) throws Exception {
    this.htracedPath = Paths.get("target", "..", "go", "build", "htraced").toFile();
    if (!this.htracedPath.exists()) {
        throw new RuntimeException("No htraced binary exists at " + this.htracedPath);
    }/*  w ww .j  a va 2s.  c o  m*/
    this.dataDir = new DataDir();
    // Create a notifier socket bound to a random port.
    ServerSocket listener = new ServerSocket(0);
    boolean success = false;
    Process process = null;
    HttpClient http = null;
    try {
        // Use a random port for the web address.  No 'scheme' yet.
        String random = builder.host + ":0";
        String logPath = new File(dataDir.get(), "log.txt").getAbsolutePath();
        // Pass cmdline args to htraced to it uses our test dir for data.
        ProcessBuilder pb = new ProcessBuilder(htracedPath.getAbsolutePath(), "-Dlog.level=TRACE",
                "-Dlog.path=" + logPath, "-Dweb.address=" + random, "-Dhrpc.address=" + random,
                "-Ddata.store.clear=true",
                "-Dstartup.notification.address=localhost:" + listener.getLocalPort(),
                "-Ddata.store.directories=" + dataDir.get().getAbsolutePath());

        // Set HTRACED_CONF_DIR to the temporary directory we just created, to
        // ensure that it doesn't pull in any other configuration file that might
        // be on this test machine.
        Map<String, String> env = pb.environment();
        env.put("HTRACED_CONF_DIR", dataDir.get().getAbsolutePath());

        // Remove any HTRACED_WEB_DIR variable that might be set, to ensure that
        // we use the default value (which finds the local web files by relative
        // path).
        env.remove("HTRACED_WEB_DIR");

        pb.redirectErrorStream(true);
        // Inherit STDERR/STDOUT i/o; dumps on console for now.  Can add logs later.
        pb.inheritIO();
        pb.directory(dataDir.get());
        //assert pb.redirectInput() == Redirect.PIPE;
        //assert pb.redirectOutput().file() == dataDir;
        process = pb.start();
        assert process.getInputStream().read() == -1;
        StartupNotificationData data = readStartupNotification(listener);
        httpAddr = data.httpAddr;
        hrpcAddr = data.hrpcAddr;
        LOG.info("Started htraced process " + data.processId + " with http " + "address " + data.httpAddr
                + ", logging to " + logPath);
        http = RestBufferManager.createHttpClient(60000L, 60000L);
        http.start();
        success = true;
    } finally {
        if (!success) {
            // Clean up after failure
            if (process != null) {
                process.destroy();
                process = null;
            }
            if (http != null) {
                http.stop();
            }
        }
        delegate = process;
        listener.close();
        httpClient = http;
    }
}

From source file:org.alexlg.bankit.Launcher.java

/**
 * Check if a tcp port is open on localhost interface.
 * @param port Port to check/*w ww  .  j av a 2  s  .  co  m*/
 * @return True if port is open, false otherwise
 */
private static boolean isPortOpen(int port) {
    ServerSocket socket = null;
    try {
        socket = new ServerSocket(port);
        socket.setReuseAddress(true);
    } catch (IOException e) {
        return false;
    } finally {
        // Clean up
        try {
            if (socket != null)
                socket.close();
        } catch (IOException e) {
        }
    }

    return true;
}

From source file:org.ngrinder.perftest.service.ConsoleManagerTest.java

@Test
public void testAvailableSocket() throws IOException {
    ServerSocket serverSocket = null;
    try {// w  w w  . j a va 2 s.c o m
        // When port is already used
        serverSocket = new ServerSocket(20111);
        int localPort = serverSocket.getLocalPort();

        // It should be excluded in available ports
        List<Integer> availablePorts = NetworkUtils.getAvailablePorts("", 20, 20111, 40000);
        assertThat(availablePorts.contains(localPort), not(true));
        assertThat(availablePorts.size(), is(20));
    } finally {
        if (serverSocket != null) {
            serverSocket.close();
        }
    }
}

From source file:com.ning.metrics.goodwill.access.CachingGoodwillAccessorTest.java

private int findFreePort() throws IOException {
    ServerSocket socket = null;//from w w w. ja  va 2 s  .co  m

    try {
        socket = new ServerSocket(0);

        return socket.getLocalPort();
    } finally {
        if (socket != null) {
            socket.close();
        }
    }
}

From source file:ext.services.network.TestNetworkUtils.java

/**
 * Test get connection url proxy with proxy.
 * //from   w  w  w . j a  va  2s .co m
 *
 * @throws Exception the exception
 */
public void testGetConnectionURLProxyWithProxy() throws Exception {
    final ServerSocket socket = new ServerSocket(PROXY_PORT);
    Thread thread = new Thread("ProxySocketAcceptThread") {
        @Override
        public void run() {
            try {
                while (!bStop) {
                    Socket sock = socket.accept();
                    Log.debug("Accepted connection, sending back garbage and close socket...");
                    sock.getOutputStream().write(1);
                    sock.close();
                }
            } catch (IOException e) {
                Log.error(e);
            }
        }
    };
    thread.setDaemon(true); // to finish tests even if this is still running
    thread.start();
    Log.debug("Using local port: " + socket.getLocalPort());
    try {
        // useful content when inet access is allowed
        Conf.setProperty(Const.CONF_NETWORK_NONE_INTERNET_ACCESS, "false");
        HttpURLConnection connection = NetworkUtils.getConnection(new java.net.URL(URL),
                new Proxy(Type.SOCKS, "localhost", socket.getLocalPort(), "user", "password"));
        assertNotNull(connection);
        connection.disconnect();
    } finally {
        bStop = true;
        socket.close();
        thread.join();
    }
}