Creating a New Server Socket Channel - Java Network

Java examples for Network:Socket Channel

  1. HOME
  2. Java
  3. Network
  4. Socket Channel

Description

Creating a New Server Socket Channel

Demo Code

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.StandardSocketOptions;
import java.nio.ByteBuffer;
import java.nio.channels.ServerSocketChannel;
import java.nio.channels.SocketChannel;

public class Main {
  public static void main(String[] args) {
    final int DEFAULT_PORT = 5555;
    final String IP = "127.0.0.1";
    ByteBuffer buffer = ByteBuffer.allocateDirect(1024);
    try (ServerSocketChannel serverSocketChannel = ServerSocketChannel.open()) {
      if (serverSocketChannel.isOpen()) {
        serverSocketChannel.configureBlocking(true);
        serverSocketChannel.setOption(StandardSocketOptions.SO_RCVBUF, 4 * 1024);
        serverSocketChannel.setOption(StandardSocketOptions.SO_REUSEADDR, true);
        serverSocketChannel.bind(new InetSocketAddress(IP, DEFAULT_PORT));
        System.out.println("Waiting for connections ...");
        while (true) {
          try (SocketChannel socketChannel = serverSocketChannel.accept()) {
            System.out.println("Incoming connection from: "
                + socketChannel.getRemoteAddress());
            while (socketChannel.read(buffer) != -1) {
              buffer.flip();/*from   www .java  2  s  .  c  o  m*/
              socketChannel.write(buffer);
              if (buffer.hasRemaining()) {
                buffer.compact();
              } else {
                buffer.clear();
              }
            }
          } catch (IOException ex) {
          }
        }
      } else {
        System.out.println("The server socket channel cannot be opened!");
      }
    } catch (IOException ex) {
      System.err.println(ex);
    }
  }
}

Result


Related Tutorials