Example usage for java.nio.channels SocketChannel write

Introduction

In this page you can find the example usage for java.nio.channels SocketChannel write.

Prototype

public final long write(ByteBuffer[] srcs) throws IOException 

Source Link

Usage

From source file:org.apache.gobblin.tunnel.TestTunnelWithArbitraryTCPTraffic.java

@Test(enabled = false, timeOut = 15000, expectedExceptions = IOException.class)
public void testTunnelThreadDeadAfterUnexpectedException() throws IOException, InterruptedException {
    MockServer proxyServer = startConnectProxyServer(false, false, 8);

    Tunnel tunnel = Tunnel.build("localhost", doubleEchoServer.getServerSocketPort(), "localhost",
            proxyServer.getServerSocketPort());

    String response = "";
    try {// ww w  .j av a  2  s.c o  m
        int tunnelPort = tunnel.getPort();
        SocketChannel client = SocketChannel.open();

        client.connect(new InetSocketAddress("localhost", tunnelPort));
        client.write(ByteBuffer.wrap("Knock\n".getBytes()));
        response = readFromSocket(client);
        LOG.info(response);

        for (int i = 0; i < 5; i++) {
            client.write(ByteBuffer.wrap("Hello\n".getBytes()));
            Thread.sleep(100);
        }
        client.close();
    } finally {
        proxyServer.stopServer();
        tunnel.close();
        assertNotEquals(response, "Knock Knock\n");
        assertEquals(proxyServer.getNumConnects(), 1);
        assertFalse(tunnel.isTunnelThreadAlive());
    }
}

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From source file:gobblin.tunnel.TestTunnelWithArbitraryTCPTraffic.java

private void runClientToTalkFirstServer(int tunnelPort) throws IOException {
    SocketChannel client = SocketChannel.open();

    client.connect(new InetSocketAddress("localhost", tunnelPort));
    String response0 = readFromSocket(client);
    LOG.info(response0);/* ww w  .j  a  va 2 s.c  o  m*/

    client.write(ByteBuffer.wrap("Knock\n".getBytes()));
    String response1 = readFromSocket(client);
    LOG.info(response1);

    client.write(ByteBuffer.wrap("Hello\n".getBytes()));
    String response2 = readFromSocket(client);
    LOG.info(response2);

    client.close();

    assertEquals(response0, "Hello\n");
    assertEquals(response1, "Knock Knock\n");
    assertEquals(response2, "Hello Hello\n");
}

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From source file:org.reunionemu.jreunion.server.Network.java

private boolean processOutput(SocketChannel socketChannel) {

    Client client = Server.getInstance().getWorld().getClients().get(socketChannel);

    if (client == null)
        return false;

    if (!socketChannel.isOpen() || !socketChannel.isConnected()) {
        disconnect(socketChannel);/*from   ww  w . j a  v  a2  s  .  c  om*/
        return false;
    }
    buffer.clear();
    byte[] packetBytes = client.flush();
    if (packetBytes == null)
        return true;
    buffer.put(packetBytes);
    buffer.flip();

    try {
        socketChannel.write(buffer);
    } catch (IOException e) {
        LoggerFactory.getLogger(this.getClass()).error("Exception", e);
        disconnect(socketChannel);
        return false;
    }
    return true;
}

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From source file:gobblin.tunnel.TestTunnelWithArbitraryTCPTraffic.java

@Test(expectedExceptions = IOException.class)
public void testTunnelWhereProxyConnectionToServerFailsWithWriteFirstClient()
        throws IOException, InterruptedException {
    MockServer proxyServer = startConnectProxyServer();
    final int nonExistentPort = 54321; // hope this doesn't exist!
    Tunnel tunnel = Tunnel.build("localhost", nonExistentPort, "localhost", proxyServer.getServerSocketPort());
    try {// w  w w .  java2s  .  c  o m
        int tunnelPort = tunnel.getPort();
        SocketChannel client = SocketChannel.open();

        client.configureBlocking(true);
        client.connect(new InetSocketAddress("localhost", tunnelPort));
        // Might have to write multiple times before connection error propagates back from proxy through tunnel to client
        for (int i = 0; i < 5; i++) {
            client.write(ByteBuffer.wrap("Knock\n".getBytes()));
            Thread.sleep(100);
        }
        String response1 = readFromSocket(client);
        LOG.info(response1);

        client.close();

    } finally {
        proxyServer.stopServer();
        tunnel.close();
        assertFalse(tunnel.isTunnelThreadAlive());
        assertEquals(proxyServer.getNumConnects(), 1);
    }
}

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From source file:org.apache.gobblin.tunnel.TestTunnelWithArbitraryTCPTraffic.java

@Test(enabled = false, expectedExceptions = IOException.class)
public void testTunnelWhereProxyConnectionToServerFailsWithWriteFirstClient()
        throws IOException, InterruptedException {
    MockServer proxyServer = startConnectProxyServer();
    final int nonExistentPort = 54321; // hope this doesn't exist!
    Tunnel tunnel = Tunnel.build("localhost", nonExistentPort, "localhost", proxyServer.getServerSocketPort());
    try {/*from  ww w .  j a  v  a  2 s  . c  om*/
        int tunnelPort = tunnel.getPort();
        SocketChannel client = SocketChannel.open();

        client.configureBlocking(true);
        client.connect(new InetSocketAddress("localhost", tunnelPort));
        // Might have to write multiple times before connection error propagates back from proxy through tunnel to client
        for (int i = 0; i < 5; i++) {
            client.write(ByteBuffer.wrap("Knock\n".getBytes()));
            Thread.sleep(100);
        }
        String response1 = readFromSocket(client);
        LOG.info(response1);

        client.close();

    } finally {
        proxyServer.stopServer();
        tunnel.close();
        assertFalse(tunnel.isTunnelThreadAlive());
        assertEquals(proxyServer.getNumConnects(), 1);
    }
}

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From source file:gobblin.tunnel.TestTunnelWithArbitraryTCPTraffic.java

@Test(timeOut = 15000)
public void testTunnelThreadDeadAfterClose() throws IOException, InterruptedException {
    MockServer proxyServer = startConnectProxyServer();
    Tunnel tunnel = Tunnel.build("localhost", talkFirstEchoServer.getServerSocketPort(), "localhost",
            proxyServer.getServerSocketPort());

    try {/*  www.j  av a2 s .c o m*/
        int tunnelPort = tunnel.getPort();
        SocketChannel client = SocketChannel.open();

        client.connect(new InetSocketAddress("localhost", tunnelPort));
        String response0 = readFromSocket(client);
        LOG.info(response0);

        // write a lot of data to increase chance of response after close
        for (int i = 0; i < 1000; i++) {
            client.write(ByteBuffer.wrap("Knock\n".getBytes()));
        }

        // don't wait for response
        client.close();

        assertEquals(response0, "Hello\n");
        assertEquals(proxyServer.getNumConnects(), 1);
    } finally {
        proxyServer.stopServer();
        tunnel.close();
        assertFalse(tunnel.isTunnelThreadAlive());
    }
}

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From source file:org.apache.gobblin.tunnel.TestTunnelWithArbitraryTCPTraffic.java

@Test(enabled = false, timeOut = 15000)
public void testTunnelThreadDeadAfterClose() throws IOException, InterruptedException {
    MockServer proxyServer = startConnectProxyServer();
    Tunnel tunnel = Tunnel.build("localhost", talkFirstEchoServer.getServerSocketPort(), "localhost",
            proxyServer.getServerSocketPort());

    try {/*from   w w  w .java2 s . c om*/
        int tunnelPort = tunnel.getPort();
        SocketChannel client = SocketChannel.open();

        client.connect(new InetSocketAddress("localhost", tunnelPort));
        String response0 = readFromSocket(client);
        LOG.info(response0);

        // write a lot of data to increase chance of response after close
        for (int i = 0; i < 1000; i++) {
            client.write(ByteBuffer.wrap("Knock\n".getBytes()));
        }

        // don't wait for response
        client.close();

        assertEquals(response0, "Hello\n");
        assertEquals(proxyServer.getNumConnects(), 1);
    } finally {
        proxyServer.stopServer();
        tunnel.close();
        assertFalse(tunnel.isTunnelThreadAlive());
    }
}

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From source file:hornet.framework.clamav.service.ClamAVCheckService.java

/**
 * Lecture du fichier et envoi sur la socket.
 *
 * @param resultat/*from   w w  w .  j av  a  2  s .  c  o  m*/
 *            resultat
 * @param fileForTestSize
 *            fileForTestSize
 * @param channel
 *            channel
 * @param bufFileForTestRead
 *            bufFileForTestRead
 * @throws IOException
 *             IOException
 */
protected void readAndSendFile(final StringBuilder resultat, final long fileForTestSize,
        final SocketChannel channel, final MappedByteBuffer bufFileForTestRead) throws IOException {

    // Envoi de la commande
    final ByteBuffer writeReadBuffer = ByteBuffer.allocate(BUFFER_SIZE);
    writeReadBuffer.put(ClamAVCheckService.COMMANDE.getBytes(UTF_8));
    writeReadBuffer.put(this.intToByteArray((int) fileForTestSize));
    writeReadBuffer.flip();
    channel.write(writeReadBuffer);

    // Envoi du fichier

    long size = fileForTestSize;
    // envoi du fichier
    while (size > 0) {
        size -= channel.write(bufFileForTestRead);
    }
    final ByteBuffer writeBuffer = ByteBuffer.allocate(4);
    writeBuffer.put(new byte[] { 0, 0, 0, 0 });
    writeBuffer.flip();
    channel.write(writeBuffer);

    // lecture de la rponse
    ByteBuffer readBuffer;
    readBuffer = ByteBuffer.allocate(BUFFER_SIZE);
    // lecture de la rponse
    readBuffer.clear();
    boolean readLine = false;
    while (!readLine) {
        final int numReaden = channel.read(readBuffer);
        if (numReaden > 0) {
            readLine = readBuffer.get(numReaden - 1) == '\n';
            resultat.append(new String(readBuffer.array(), 0, numReaden, UTF_8));
            readBuffer.clear();
        } else {
            if (numReaden == -1) {
                readLine = true;
                readBuffer.clear();
            }
        }
    }
}

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From source file:org.apache.awf.web.SystemTest.java

@Test
public void sendGarbageTest() throws IOException {

    InetSocketAddress socketAddress = new InetSocketAddress(PORT);
    SocketChannel channel = SocketChannel.open(socketAddress);
    channel.write(ByteBuffer.wrap(new byte[] { 1, 1, 1, 1 } // garbage
    ));//from ww  w. j a va 2  s  .  c  o  m
    channel.close();
}

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From source file:Proxy.java

/**
 * Read all data from <code>from</code> and write it to <code>to</code>.
 * Returns false if channel was closed//from ww w  .  j  a  va2s  .c  o  m
 */
boolean relay(SocketChannel from, SocketChannel to, ByteBuffer buf) throws Exception {
    int num;
    StringBuilder sb;

    buf.clear();
    while (true) {
        num = from.read(buf);
        if (num < 0)
            return false;
        else if (num == 0)
            return true;
        buf.flip();
        if (verbose) {
            log(printRelayedData(toString(from), toString(to), buf.remaining()));
        }
        if (debug) {
            sb = new StringBuilder();
            sb.append(new String(buf.array()).trim());
            sb.append('\n');
            log(sb.toString());
        }
        to.write(buf);
        buf.flip();
    }
}

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