Examples with ServerSocket java.net.ServerSocket used on opensource projects

Example 51 with ServerSocket

use of java.net.ServerSocket in project hadoop by apache.

the class TestServer method testBindError.

@Test
public void testBindError() throws Exception {
    Configuration conf = new Configuration();
    ServerSocket socket = new ServerSocket();
    InetSocketAddress address = new InetSocketAddress("0.0.0.0", 0);
    socket.bind(address);
    try {
        int min = socket.getLocalPort();
        conf.set("TestRange", min + "-" + min);
        ServerSocket socket2 = new ServerSocket();
        InetSocketAddress address2 = new InetSocketAddress("0.0.0.0", 0);
        boolean caught = false;
        try {
            Server.bind(socket2, address2, 10, conf, "TestRange");
        } catch (BindException e) {
            caught = true;
        } finally {
            socket2.close();
        }
        assertTrue("Failed to catch the expected bind exception", caught);
    } finally {
        socket.close();
    }
}

Example 52 with ServerSocket

use of java.net.ServerSocket in project hadoop by apache.

the class AuthenticatorTestCase method getLocalPort.

protected int getLocalPort() throws Exception {
    ServerSocket ss = new ServerSocket(0);
    int ret = ss.getLocalPort();
    ss.close();
    return ret;
}

Example 53 with ServerSocket

use of java.net.ServerSocket in project flink by apache.

the class ConnectionUtilsTest method testReturnLocalHostAddressUsingHeuristics.

@Test
public void testReturnLocalHostAddressUsingHeuristics() throws Exception {
    try (ServerSocket blocker = new ServerSocket(0, 1, InetAddress.getLocalHost())) {
        // the "blocker" server socket simply does not accept connections
        // this address is consequently "unreachable"
        InetSocketAddress unreachable = new InetSocketAddress("localhost", blocker.getLocalPort());
        final long start = System.nanoTime();
        InetAddress add = ConnectionUtils.findConnectingAddress(unreachable, 2000, 400);
        // check that it did not take forever (max 30 seconds)
        // this check can unfortunately not be too tight, or it will be flaky on some CI infrastructure
        assertTrue(System.nanoTime() - start < 30_000_000_000L);
        // we should have found a heuristic address
        assertNotNull(add);
        // make sure that we returned the InetAddress.getLocalHost as a heuristic
        assertEquals(InetAddress.getLocalHost(), add);
    }
}

Example 54 with ServerSocket

use of java.net.ServerSocket in project flink by apache.

the class ConnectionUtilsTest method testFindConnectingAddressWhenGetLocalHostThrows.

@Test
public void testFindConnectingAddressWhenGetLocalHostThrows() throws Exception {
    PowerMockito.mockStatic(InetAddress.class);
    Mockito.when(InetAddress.getLocalHost()).thenThrow(new UnknownHostException()).thenCallRealMethod();
    final InetAddress loopbackAddress = Inet4Address.getByName("127.0.0.1");
    Thread socketServerThread;
    try (ServerSocket socket = new ServerSocket(0, 1, loopbackAddress)) {
        // Make sure that the thread will eventually die even if something else goes wrong
        socket.setSoTimeout(10_000);
        socketServerThread = new Thread(new Runnable() {

            @Override
            public void run() {
                try {
                    socket.accept();
                } catch (IOException e) {
                // ignore
                }
            }
        });
        socketServerThread.start();
        final InetSocketAddress socketAddress = new InetSocketAddress(loopbackAddress, socket.getLocalPort());
        final InetAddress address = ConnectionUtils.findConnectingAddress(socketAddress, 2000, 400);
        PowerMockito.verifyStatic();
        // Make sure we got an address via alternative means
        assertNotNull(address);
    }
}

Example 55 with ServerSocket

use of java.net.ServerSocket in project flink by apache.

the class IPv6HostnamesITCase method getLocalIPv6Address.

private Inet6Address getLocalIPv6Address() {
    try {
        Enumeration<NetworkInterface> e = NetworkInterface.getNetworkInterfaces();
        while (e.hasMoreElements()) {
            NetworkInterface netInterface = e.nextElement();
            // for each address of the network interface
            Enumeration<InetAddress> ee = netInterface.getInetAddresses();
            while (ee.hasMoreElements()) {
                InetAddress addr = ee.nextElement();
                if (addr instanceof Inet6Address && (!addr.isLoopbackAddress()) && (!addr.isAnyLocalAddress())) {
                    // see if it is possible to bind to the address
                    InetSocketAddress socketAddress = new InetSocketAddress(addr, 0);
                    try {
                        log.info("Considering address " + addr);
                        // test whether we can bind a socket to that address
                        log.info("Testing whether sockets can bind to " + addr);
                        ServerSocket sock = new ServerSocket();
                        sock.bind(socketAddress);
                        sock.close();
                        // test whether Akka's netty can bind to the address
                        log.info("Testing whether Akka can use " + addr);
                        int port = NetUtils.getAvailablePort();
                        ActorSystem as = AkkaUtils.createActorSystem(new Configuration(), new Some<scala.Tuple2<String, Object>>(new scala.Tuple2<String, Object>(addr.getHostAddress(), port)));
                        as.shutdown();
                        log.info("Using address " + addr);
                        return (Inet6Address) addr;
                    } catch (IOException ignored) {
                    // fall through the loop
                    }
                }
            }
        }
        return null;
    } catch (Exception e) {
        return null;
    }
}