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:TestSecurity.java

/**
 * put your documentation comment here/*from  w w w . j  a v  a2s  . co m*/
 * @param req
 * @param res
 * @exception ServletException, IOException
 */
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    res.setContentType("text/html");
    PrintWriter out = res.getWriter();
    out.println("<HTML>");
    out.println("<HEAD><TITLE>Hello World</TITLE></HEAD>");
    out.println("<BODY>");
    out.println("<BIG>Test Security</BIG>");
    try {
        out.println(h2o + "Information..." + h2c);
        out.println("  Security Manager: " + getSecurityManager().getClass().getName() + p);
        out.println("  ClassLoader: " + this.getClass().getClassLoader() + p);
        //            weblogic.utils.classloaders.GenericClassLoader gcl = (weblogic.utils.classloaders.GenericClassLoader)this.getClass().getClassLoader();
        //            gcl.setDebug( true );
        out.println("  CodeSource: " + this.getClass().getProtectionDomain().getCodeSource().getLocation() + p);
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    /*
     try
     {
     out.println( h2o + "Trying some dangerous J2EE calls..." + h2c );
     String hack = request.getParameter( "hack" );
     Cookie[] cookies = request.getCookies();
     out.println( " -- allowed -- " + p );
     int x = 1 + 2 + 3;
     out.println( hack );  // use it
     int y = 1 + 2 + 3;
     out.println( cookies );  // use it
     String m = "COOKIE: " + cookies[0]; // use it again
     cookies = new Cookie[10]; // reset it
     String n = "COOKIE: " + cookies[5]; // use it again
     }
     catch( Exception e ) { out.println( " -- rejected -- " + e.getMessage() + p ); }
     */
    try {
        out.println(h2o + "Attempting file write to d:/Java..." + h2c);
        File f = new File("d:/Java/blah.txt");
        FileWriter fw = new FileWriter(f);
        fw.write("test\n");
        fw.close();
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting file write to d:/Java/TestServlet..." + h2c);
        File f = new File("d:/Java/TestServlet/blah.txt");
        FileWriter fw = new FileWriter(f);
        fw.write("test\n");
        fw.close();
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting file read to c:/Ntdetect..." + h2c);
        File f = new File("c:/Ntdetect.com");
        FileReader fr = new FileReader(f);
        int c = fr.read();
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting file read to c:/weblogic/weblogic.properties..." + h2c);
        File f = new File("c:/weblogic/weblogic.properties");
        FileReader fr = new FileReader(f);
        int c = fr.read();
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting to connect to yahoo.com..." + h2c);
        Socket s = new Socket("yahoo.com", 8080);
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting to connect to hacker.com..." + h2c);
        Socket s = new Socket("hacker.com", 8080);
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting to listen on port 37337..." + h2c);
        ServerSocket s = new ServerSocket(37337);
        Socket c = s.accept();
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting to listen on port 7001..." + h2c);
        ServerSocket s = new ServerSocket(7001);
        Socket c = s.accept();
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    /*
     try
     {
     out.println( h2o + "Attempting native call..." + h2c );
     native0( 1 );
     out.println( " -- allowed -- " + p );
     }           
     catch( Exception e ) { out.println( " -- rejected -- " + e.getMessage() + p ); }
     */
    try {
        out.println(h2o + "Attempting exec..." + h2c);
        Runtime.getRuntime().exec("dir");
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    try {
        out.println(h2o + "Attempting system exit..." + h2c);
        out.println(" -- allowed -- " + p);
    } catch (Exception e) {
        out.println(" -- rejected -- " + e.getMessage() + p);
    }
    out.println("</BODY></HTML>");
}

From source file:io.vertx.ext.consul.dc.ConsulAgent.java

private static int getFreePort() {
    int port = -1;
    try {/*from  w  w w  .  j  av a 2 s. c  om*/
        ServerSocket socket = new ServerSocket(0);
        port = socket.getLocalPort();
        socket.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return port;
}

From source file:in.raster.oviyam.servlet.ListenerServlet.java

private boolean getListenerStatus() {
    boolean success = true;

    ListenerHandler lh = new ListenerHandler();
    Listener listener = lh.getListener();

    try {//  w w w.  ja  v  a  2 s  .com
        (new ServerSocket(Integer.parseInt(listener.getPort()))).close();
    } catch (UnknownHostException e) {
        success = false;
    } catch (IOException e) {
        success = false;
    }

    return success;
}

From source file:com.mirth.connect.manager.ManagerController.java

/**
 * Test a port to see if it is already in use.
 * //from  w w w. j a  v  a2 s.  c o m
 * @param port
 *            The port to test.
 * @param name
 *            A friendly name to display in case of an error.
 * @return An error message, or null if the port is not in use and there was no error.
 */
private String testPort(String port, String name) {
    ServerSocket socket = null;
    try {
        socket = new ServerSocket(Integer.parseInt(port));
    } catch (NumberFormatException ex) {
        return name + " port is invalid: " + port;
    } catch (IOException ex) {
        return name + " port is already in use: " + port;
    } finally {
        if (socket != null) {
            try {
                socket.close();
            } catch (IOException e) {
                return "Could not close test socket for " + name + ": " + port;
            }
        }
    }
    return null;
}

From source file:com.meyling.telnet.startup.TelnetD.java

/**
 * Method to prepare the PortListener.<br>
 *
 * Creates and prepares and runs a PortListener, with settings from the
 * passed in Properties. Yet the Listener will not accept any incoming
 * connections before startServing() has been called. this has the advantage
 * that whenever a TelnetD Singleton has been factorized, it WILL 99% not
 * fail any longer (e.g. serve its purpose).
 *
 * @param   name            Name of listner.
 * @param     settings        Properties object that holds main settings.
 * @throws     BootException    Preparation failed.
 *///w w  w.j  a v  a2s .  c o m
private void prepareListener(final String name, final Properties settings) throws BootException {

    int port = 0;
    try {
        port = Integer.parseInt(settings.getProperty(name + ".port"));
        ServerSocket socket = new ServerSocket(port);
        socket.close();
    } catch (NumberFormatException e) {
        trace.fatal(e, e);
        throw new BootException(
                "Failure while parsing port number for \"" + name + ".port\": " + e.getMessage());
    } catch (IOException e) {
        trace.fatal(e, e);
        throw new BootException(
                "Failure while starting listener for port number " + port + ": " + e.getMessage());
    }
    // factorize PortListener
    final PortListener listener = PortListener.createPortListener(name, settings);
    // start the Thread derived PortListener
    try {
        listeners.add(listener);
    } catch (Exception e) {
        trace.fatal(e, e);
        throw new BootException("Failure while starting PortListener thread: " + e.getMessage());
    }

}

From source file:org.apache.cxf.dosgi.singlebundle.AggregatedActivatorTest.java

public void testHttpServicePortInUse() throws Exception {
    BundleContext bc = EasyMock.createNiceMock(BundleContext.class);
    EasyMock.replay(bc);//from   ww w.j a v  a 2 s. c  o m

    ServerSocket s = null;
    try {
        try {
            // now lets block the default port
            s = new ServerSocket(Integer.parseInt(AggregatedActivator.DEFAULT_HTTP_PORT));
        } catch (Exception e) {
            // if someone else already has it, thats fine too
        }

        assertNull("Precondition failed", System.getProperty(AggregatedActivator.HTTP_PORT_PROPERTY));
        new AggregatedActivator().setHttpServicePort(bc);
        assertTrue("The " + AggregatedActivator.HTTP_PORT_PROPERTY + " property should have been set",
                System.getProperty(AggregatedActivator.HTTP_PORT_PROPERTY).length() > 0);
    } finally {
        if (s != null) {
            s.close();
        }
    }
}

From source file:UniqueInstance.java

/**
 * Essaye de dmarrer le gestionnaire d'instance unique. Si l'initialisation a russi, c'est que l'instance est
 * unique. Sinon, c'est qu'une autre instance de l'application est dj lance. L'appel de cette mthode prvient
 * l'application dj lance qu'une autre vient d'essayer de se connecter.
 *
 * @return {@code true} si l'instance de l'application est unique.
 */// ww w  .  ja va 2  s .  c  om
public boolean launch() {
    /* Indique si l'instance du programme est unique. */
    boolean unique;

    try {
        /* On cre une socket sur le port dfini. */
        final ServerSocket server = new ServerSocket(port);

        /* Si la cration de la socket russit, c'est que l'instance du programme est unique, aucune autre n'existe. */
        unique = true;

        /* Si il y a des actions  faire lorsqu'une autre instance essaye de dmarrer... */
        if (runOnReceive != null) {

            /* On lance un Thread d'coute sur ce port. */
            Thread portListenerThread = new Thread() {

                @Override
                public void run() {
                    /* Tant que l'application est lance... */
                    while (true) {
                        try {
                            /* On attend qu'une socket se connecte sur le serveur. */
                            final Socket socket = server.accept();

                            /* Si une socket est connecte, on coute le message envoy dans un nouveau Thread. */
                            new Thread() {

                                @Override
                                public void run() {
                                    receive(socket);
                                }
                            }.start();
                        } catch (IOException e) {
                            Logger.getLogger("UniqueInstance")
                                    .warning("Attente de connexion de socket choue.");
                        }
                    }
                }
            };

            /* Le Thread d'coute de port est dmon. */
            portListenerThread.setDaemon(true);

            /* On dmarre le Thread. */
            portListenerThread.start();
        }
    } catch (IOException e) {
        /* Si la cration de la socket choue, c'est que l'instance de n'est pas unique, une autre n'existe. */
        unique = false;

        /* Si des actions sont prvues par l'instance dj lance... */
        if (runOnReceive != null) {
            /*
             * Dans ce cas, on envoie un message  l'autre instance de l'application pour lui demander d'avoir le
             * focus (par exemple).
             */
            send();
        }
    }
    return unique;
}

From source file:org.apache.asterix.external.input.stream.factory.SocketServerInputStreamFactory.java

@Override
public synchronized AsterixInputStream createInputStream(IHyracksTaskContext ctx, int partition)
        throws HyracksDataException {
    try {/*from w  w w . j a v a  2 s . com*/
        Pair<String, Integer> socket = sockets.get(partition);
        ServerSocket server;
        server = new ServerSocket(socket.second);
        return new SocketServerInputStream(server);
    } catch (IOException e) {
        throw new HyracksDataException(e);
    }
}

From source file:org.auraframework.archetype.AuraArchetypeSimpleTestMANUAL.java

public void testProjectCreation() throws Throwable {
    Process jettyProcess = null;//from   www .  j  a  va  2s  . c om
    workspace = new File(
            System.getProperty("java.io.tmpdir") + File.separator + getName() + System.currentTimeMillis());
    try {
        // create a workspace to place the project files in
        workspace.mkdirs();

        // generate a project from the archetype
        Process genProcess = startProcess(workspace,
                ImmutableList.of("mvn", "archetype:generate", "-DarchetypeRepository=" + archRepo,
                        "-DarchetypeCatalog=" + archCatalog, "-DarchetypeGroupId=" + archetype.groupId,
                        "-DarchetypeArtifactId=" + archetype.artifactId,
                        "-DarchetypeVersion=" + archetype.version, "-DgroupId=" + project.groupId,
                        "-DartifactId=" + project.artifactId, "-Dversion=" + project.version,
                        "-Dpackage=" + projectPackage, "-DinteractiveMode=false"));
        goldMavenOutput(genProcess, "-creation.txt", "Failed to generate artifact!");

        File projectDir = new File(workspace, project.artifactId);
        assertDirectory(projectDir);
        verifyGeneratedResources(projectDir);

        // build the new project
        Process buildProcess = startProcess(projectDir, ImmutableList.of("mvn", "install"));
        goldMavenOutput(buildProcess, "-install.txt", "Failed to build new project!");

        // get a free port for jetty
        ServerSocket socket = new ServerSocket(0);
        int jettyPort = socket.getLocalPort();
        socket.close();

        // start up jetty
        jettyProcess = startProcess(projectDir,
                ImmutableList.of("mvn", "jetty:run", "-Djetty.port=" + jettyPort));

        int status = 0;
        for (int i = 0; i < 30; i++) {
            try {
                HttpGet get = obtainGetMethod("/");
                HttpResponse response = perform(get);
                status = getStatusCode(response);
                get.releaseConnection();
                break;
            } catch (ConnectException ce) {
                // expected, before server is listening
                Thread.sleep(1000);
            }
        }
        assertEquals("Failed to connect to server", HttpStatus.SC_OK, status);

        verifyDefaultDocument();
        verifySampleComponents();
    } catch (Throwable t) {
        // if any errors in Jetty requests, let's print out the Jetty
        // console output for diag before killing the
        // test
        if (jettyProcess != null) {
            InputStream is = jettyProcess.getInputStream();
            int len = is.available();
            byte[] buf = new byte[len];
            is.read(buf);
            System.err.println(new String(buf));
        }
        throw t;
    } finally {
        // kill Jetty
        if (jettyProcess != null) {
            try {
                jettyProcess.exitValue();
            } catch (IllegalThreadStateException e) {
                jettyProcess.destroy();
            }
        }
        // cleanup generated workspace
        IOUtil.delete(workspace);
    }
}

From source file:org.auraframework.integration.test.archetype.AuraArchetypeSimpleTestMANUAL.java

@Test
public void testProjectCreation() throws Throwable {
    Process jettyProcess = null;/*from  w  ww. j  a v  a2  s .  co  m*/
    workspace = new File(IOUtil.newTempDir("archetype"));
    try {
        // create a workspace to place the project files in
        workspace.mkdirs();

        // generate a project from the archetype
        Process genProcess = startProcess(workspace,
                ImmutableList.of("mvn", "archetype:generate", "-DarchetypeRepository=" + archRepo,
                        "-DarchetypeCatalog=" + archCatalog, "-DarchetypeGroupId=" + archetype.groupId,
                        "-DarchetypeArtifactId=" + archetype.artifactId,
                        "-DarchetypeVersion=" + archetype.version, "-DgroupId=" + project.groupId,
                        "-DartifactId=" + project.artifactId, "-Dversion=" + project.version,
                        "-Dpackage=" + projectPackage, "-DinteractiveMode=false"));
        goldMavenOutput(genProcess, "-creation.txt", "Failed to generate artifact!");

        File projectDir = new File(workspace, project.artifactId);
        assertDirectory(projectDir);
        verifyGeneratedResources(projectDir);

        // build the new project
        Process buildProcess = startProcess(projectDir, ImmutableList.of("mvn", "install"));
        goldMavenOutput(buildProcess, "-install.txt", "Failed to build new project!");

        // get a free port for jetty
        ServerSocket socket = new ServerSocket(0);
        int jettyPort = socket.getLocalPort();
        socket.close();

        // start up jetty
        jettyProcess = startProcess(projectDir,
                ImmutableList.of("mvn", "jetty:run", "-Djetty.port=" + jettyPort));

        int status = 0;
        for (int i = 0; i < 30; i++) {
            try {
                HttpGet get = obtainGetMethod("/");
                HttpResponse response = perform(get);
                status = getStatusCode(response);
                get.releaseConnection();
                break;
            } catch (ConnectException ce) {
                // expected, before server is listening
                Thread.sleep(1000);
            }
        }
        assertEquals("Failed to connect to server", HttpStatus.SC_OK, status);

        verifyDefaultDocument();
        verifySampleComponents();
    } catch (Throwable t) {
        // if any errors in Jetty requests, let's print out the Jetty
        // console output for diag before killing the
        // test
        if (jettyProcess != null) {
            InputStream is = jettyProcess.getInputStream();
            int len = is.available();
            byte[] buf = new byte[len];
            is.read(buf);
            System.err.println(new String(buf));
        }
        throw t;
    } finally {
        // kill Jetty
        if (jettyProcess != null) {
            try {
                jettyProcess.exitValue();
            } catch (IllegalThreadStateException e) {
                jettyProcess.destroy();
            }
        }
        // cleanup generated workspace
        IOUtil.delete(workspace);
    }
}