Example usage for java.nio.channels ServerSocketChannel socket

Introduction

In this page you can find the example usage for java.nio.channels ServerSocketChannel socket.

Prototype

public abstract ServerSocket socket();

Source Link

Document

Retrieves a server socket associated with this channel.

Usage

From source file:MainClass.java

public static void main(String[] args) throws Exception {

    CharsetEncoder encoder = Charset.forName("US-ASCII").newEncoder();

    ServerSocketChannel server = ServerSocketChannel.open();
    server.socket().bind(new java.net.InetSocketAddress(8000));

    for (;;) { // This server runs forever
        SocketChannel client = server.accept();
        String response = new java.util.Date().toString() + "\r\n";
        client.write(encoder.encode(CharBuffer.wrap(response)));
        client.close();/* w  w  w . ja  v  a 2  s.c o  m*/
    }
}

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From source file:MainClass.java

public static void main(String[] argv) throws Exception {
    int port = 1234; // default

    ByteBuffer buffer = ByteBuffer.wrap(GREETING.getBytes());
    ServerSocketChannel ssc = ServerSocketChannel.open();

    ssc.socket().bind(new InetSocketAddress(port));
    ssc.configureBlocking(false);//from   w ww . j  av  a  2 s  .  co m

    while (true) {
        System.out.println("Waiting for connections");

        SocketChannel sc = ssc.accept();

        if (sc == null) {
            Thread.sleep(2000);
        } else {
            System.out.println("Incoming connection from: " + sc.socket().getRemoteSocketAddress());

            buffer.rewind();
            sc.write(buffer);
            sc.close();
        }
    }
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {

    ServerSocketChannel ssChannel = ServerSocketChannel.open();
    ssChannel.configureBlocking(false);/* www.j  av a  2  s . co  m*/
    int port = 80;
    ssChannel.socket().bind(new InetSocketAddress(port));

}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    ServerSocketChannel ssChannel = ServerSocketChannel.open();
    ssChannel.configureBlocking(false);//  w w w  . ja va 2 s.co m
    int port = 80;
    ssChannel.socket().bind(new InetSocketAddress(port));
    int localPort = ssChannel.socket().getLocalPort();

    SocketChannel sChannel = ssChannel.accept();

    if (sChannel == null) {
    } else {
    }
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    Selector selector = Selector.open();

    ServerSocketChannel ssChannel1 = ServerSocketChannel.open();
    ssChannel1.configureBlocking(false);
    ssChannel1.socket().bind(new InetSocketAddress(80));

    ServerSocketChannel ssChannel2 = ServerSocketChannel.open();
    ssChannel2.configureBlocking(false);
    ssChannel2.socket().bind(new InetSocketAddress(81));

    ssChannel1.register(selector, SelectionKey.OP_ACCEPT);
    ssChannel2.register(selector, SelectionKey.OP_ACCEPT);

    while (true) {
        selector.select();// w w w. jav  a 2  s  . c  om
        Iterator it = selector.selectedKeys().iterator();
        while (it.hasNext()) {
            SelectionKey selKey = (SelectionKey) it.next();
            it.remove();

            if (selKey.isAcceptable()) {
                ServerSocketChannel ssChannel = (ServerSocketChannel) selKey.channel();
                SocketChannel sc = ssChannel.accept();
                ByteBuffer bb = ByteBuffer.allocate(100);
                sc.read(bb);

            }
        }
    }
}

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From source file:MainClass.java

public static void main(String[] args) throws IOException {
    Charset charset = Charset.forName("ISO-8859-1");
    CharsetEncoder encoder = charset.newEncoder();
    CharsetDecoder decoder = charset.newDecoder();

    ByteBuffer buffer = ByteBuffer.allocate(512);

    Selector selector = Selector.open();

    ServerSocketChannel server = ServerSocketChannel.open();
    server.socket().bind(new java.net.InetSocketAddress(8000));
    server.configureBlocking(false);/*www . j  a v a  2s . c om*/
    SelectionKey serverkey = server.register(selector, SelectionKey.OP_ACCEPT);

    for (;;) {
        selector.select();
        Set keys = selector.selectedKeys();

        for (Iterator i = keys.iterator(); i.hasNext();) {
            SelectionKey key = (SelectionKey) i.next();
            i.remove();

            if (key == serverkey) {
                if (key.isAcceptable()) {
                    SocketChannel client = server.accept();
                    client.configureBlocking(false);
                    SelectionKey clientkey = client.register(selector, SelectionKey.OP_READ);
                    clientkey.attach(new Integer(0));
                }
            } else {
                SocketChannel client = (SocketChannel) key.channel();
                if (!key.isReadable())
                    continue;
                int bytesread = client.read(buffer);
                if (bytesread == -1) {
                    key.cancel();
                    client.close();
                    continue;
                }
                buffer.flip();
                String request = decoder.decode(buffer).toString();
                buffer.clear();
                if (request.trim().equals("quit")) {
                    client.write(encoder.encode(CharBuffer.wrap("Bye.")));
                    key.cancel();
                    client.close();
                } else {
                    int num = ((Integer) key.attachment()).intValue();
                    String response = num + ": " + request.toUpperCase();
                    client.write(encoder.encode(CharBuffer.wrap(response)));
                    key.attach(new Integer(num + 1));
                }
            }
        }
    }
}

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From source file:MainClass.java

public static void main(String[] args) throws IOException {
    for (int i = 0; i < data.length; i++)
        data[i] = (byte) i;

    ServerSocketChannel server = ServerSocketChannel.open();
    server.configureBlocking(false);/*from w ww  .j a v a2s .  co m*/

    server.socket().bind(new InetSocketAddress(9000));
    Selector selector = Selector.open();
    server.register(selector, SelectionKey.OP_ACCEPT);

    while (true) {
        selector.select();
        Set readyKeys = selector.selectedKeys();
        Iterator iterator = readyKeys.iterator();
        while (iterator.hasNext()) {
            SelectionKey key = (SelectionKey) iterator.next();
            iterator.remove();
            if (key.isAcceptable()) {
                SocketChannel client = server.accept();
                System.out.println("Accepted connection from " + client);
                client.configureBlocking(false);
                ByteBuffer source = ByteBuffer.wrap(data);
                SelectionKey key2 = client.register(selector, SelectionKey.OP_WRITE);
                key2.attach(source);
            } else if (key.isWritable()) {
                SocketChannel client = (SocketChannel) key.channel();
                ByteBuffer output = (ByteBuffer) key.attachment();
                if (!output.hasRemaining()) {
                    output.rewind();
                }
                client.write(output);
            }
            key.channel().close();
        }
    }
}

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From source file:Main.java

public static void main(String[] argv) throws Exception {
    Selector selector = Selector.open();

    ServerSocketChannel ssChannel1 = ServerSocketChannel.open();
    ssChannel1.configureBlocking(false);
    ssChannel1.socket().bind(new InetSocketAddress(80));

    ServerSocketChannel ssChannel2 = ServerSocketChannel.open();
    ssChannel2.configureBlocking(false);
    ssChannel2.socket().bind(new InetSocketAddress(81));

    ssChannel1.register(selector, SelectionKey.OP_ACCEPT);
    ssChannel2.register(selector, SelectionKey.OP_ACCEPT);

    while (true) {
        selector.select();// www. ja va 2 s .co  m
        Iterator it = selector.selectedKeys().iterator();
        while (it.hasNext()) {
            SelectionKey selKey = (SelectionKey) it.next();
            it.remove();

            if (selKey.isAcceptable()) {
                ServerSocketChannel ssChannel = (ServerSocketChannel) selKey.channel();
                SocketChannel sc = ssChannel.accept();
                ByteBuffer buf = ByteBuffer.allocate(100);
                int numBytesRead = sc.read(buf);

                if (numBytesRead == -1) {
                    sc.close();
                } else {
                    // Read the bytes from the buffer
                }
                int numBytesWritten = sc.write(buf);
            }
        }
    }
}

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From source file:SimpleDaytimeServer.java

public static void main(String args[]) throws java.io.IOException {
    // RFC867 specifies port 13 for this service. On Unix platforms,
    // you need to be running as root to use that port, so we allow
    // this service to use other ports for testing.
    int port = 13;
    if (args.length > 0)
        port = Integer.parseInt(args[0]);

    // Create a channel to listen for connections on.
    ServerSocketChannel server = ServerSocketChannel.open();

    // Bind the channel to a local port. Note that we do this by obtaining
    // the underlying java.net.ServerSocket and binding that socket.
    server.socket().bind(new InetSocketAddress(port));

    // Get an encoder for converting strings to bytes
    CharsetEncoder encoder = Charset.forName("US-ASCII").newEncoder();

    for (;;) { // Loop forever, processing client connections
        // Wait for a client to connect
        SocketChannel client = server.accept();

        // Build response string, wrap, and encode to bytes
        String date = new java.util.Date().toString() + "\r\n";
        ByteBuffer response = encoder.encode(CharBuffer.wrap(date));

        // Send the response to the client and disconnect.
        client.write(response);/*w  ww. j a  v a2s.co  m*/
        client.close();
    }
}

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From source file:NewFingerServer.java

public static void main(String[] arguments) throws Exception {
    ServerSocketChannel sockChannel = ServerSocketChannel.open();
    sockChannel.configureBlocking(false);

    InetSocketAddress server = new InetSocketAddress("localhost", 79);
    ServerSocket socket = sockChannel.socket();
    socket.bind(server);//w  w w  . ja va  2 s.  co m

    Selector selector = Selector.open();
    sockChannel.register(selector, SelectionKey.OP_ACCEPT);

    while (true) {
        selector.select();
        Set keys = selector.selectedKeys();
        Iterator it = keys.iterator();
        while (it.hasNext()) {
            SelectionKey selKey = (SelectionKey) it.next();
            it.remove();
            if (selKey.isAcceptable()) {
                ServerSocketChannel selChannel = (ServerSocketChannel) selKey.channel();
                ServerSocket selSocket = selChannel.socket();
                Socket connection = selSocket.accept();

                InputStreamReader isr = new InputStreamReader(connection.getInputStream());
                BufferedReader is = new BufferedReader(isr);
                PrintWriter pw = new PrintWriter(new BufferedOutputStream(connection.getOutputStream()), false);
                pw.println("NIO Finger Server");
                pw.flush();
                String outLine = null;
                String inLine = is.readLine();
                if (inLine.length() > 0) {
                    outLine = inLine;
                }
                readPlan(outLine, pw);
                pw.flush();
                pw.close();
                is.close();

                connection.close();
            }
        }
    }
}

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