Example usage for java.nio.channels AsynchronousSocketChannel write

Introduction

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

Prototype

@Override
public abstract Future<Integer> write(ByteBuffer src);

Source Link

Usage

From source file:Test.java

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

    AsynchronousSocketChannel client = AsynchronousSocketChannel.open();
    InetSocketAddress address = new InetSocketAddress("localhost", 5000);

    Future<Void> future = client.connect(address);
    System.out.println("Client: Waiting for the connection to complete");
    future.get();//from ww w .j  ava  2s. c  o  m

    String message = "";
    while (!message.equals("quit")) {
        System.out.print("Enter a message: ");
        Scanner scanner = new Scanner(System.in);
        message = scanner.nextLine();
        System.out.println("Client: Sending ...");
        ByteBuffer buffer = ByteBuffer.wrap(message.getBytes());
        System.out.println("Client: Message sent: " + new String(buffer.array()));
        client.write(buffer);
    }
}

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From source file:com.chicm.cmraft.rpc.PacketUtils.java

private static int writeRpc(AsynchronousSocketChannel channel, Message header, Message body, int totalSize)
        throws IOException, InterruptedException, ExecutionException {
    // writing total size so that server can read all request data in one read
    //LOG.debug("total size:" + totalSize);
    long t = System.currentTimeMillis();

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    writeIntToStream(totalSize, bos);/*  www.  j  av  a2  s  . c o m*/

    header.writeDelimitedTo(bos);
    if (body != null)
        body.writeDelimitedTo(bos);

    bos.flush();
    byte[] b = bos.toByteArray();
    ByteBuffer buf = ByteBuffer.allocateDirect(totalSize + 4);
    buf.put(b);

    buf.flip();
    channel.write(buf).get();

    if (LOG.isTraceEnabled()) {
        LOG.trace("Write Rpc message to socket, takes " + (System.currentTimeMillis() - t) + " ms, size "
                + totalSize);
        LOG.trace("message:" + body);
    }
    return totalSize;
}

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