java_network_programming_4th/src/OptionSupport.java at master · cristobalc/java_network_programming_4th

24 lines (20 loc) · 756 Bytes

import java.io.*;
import java.net.*;
import java.nio.channels.*;
public class OptionSupport {
  public static void main(String[] args) throws IOException {
    printOptions(SocketChannel.open());
    printOptions(ServerSocketChannel.open());
    printOptions(AsynchronousSocketChannel.open());
    printOptions(AsynchronousServerSocketChannel.open());
    printOptions(DatagramChannel.open());
  private static void printOptions(NetworkChannel channel) throws IOException {
    System.out.println(channel.getClass().getSimpleName() + " supports:");
    for (SocketOption<?> option : channel.supportedOptions()) {
      System.out.println(option.name() + ": " + channel.getOption(option));
    System.out.println();
    channel.close();

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