A nonblocking accept( ) with ServerSocketChannel - Java Network

Java examples for Network:Socket Channel

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Description

A nonblocking accept( ) with ServerSocketChannel

Demo Code

import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;

public class Main {

  public static void main(String[] argv) throws Exception {
    int port = 1234; // default
    ByteBuffer buffer = ByteBuffer.wrap("this is a test".getBytes());
    ServerSocketChannel ssc = ServerSocketChannel.open();
    ssc.socket().bind(new InetSocketAddress(port));
    ssc.configureBlocking(false);/*from w w  w .  ja va 2s  .  c om*/
    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();
      }
    }
  }
}

Result


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