| /* |
| * Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * |
| * |
| * Used in conjunction to EchoService to test System.inheritedChannel(). |
| * |
| * The first test is the TCP echo test. A service is launched with a TCP |
| * socket and a TCP message is sent to the service. The test checks that |
| * the message is correctly echoed. |
| * |
| * The second test is a UDP echo test. A service is launched with a UDP |
| * socket and a UDP packet is sent to the service. The test checks that |
| * the packet is correctly echoed. |
| * |
| */ |
| import java.net.*; |
| import java.io.*; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.*; |
| import java.util.Random; |
| |
| public class EchoTest { |
| |
| private static int failures = 0; |
| |
| private static String ECHO_SERVICE = "EchoService"; |
| |
| /* |
| * Sends a message with random bytes to the service, and then waits for |
| * a reply (with timeout). Once the reply is received it is checked to ensure |
| * that it matches the original message. |
| */ |
| private static void TCPEchoTest() throws IOException { |
| SocketChannel sc = Launcher.launchWithSocketChannel(ECHO_SERVICE, null); |
| |
| String msg = "Where's that damn torpedo?"; |
| int repeat = 100; |
| int size = msg.length() * repeat; |
| |
| // generate bytes into a buffer and send it to the service |
| |
| ByteBuffer bb1 = ByteBuffer.allocate(size); |
| Random gen = new Random(); |
| for (int i=0; i<repeat; i++) { |
| bb1.put(msg.getBytes("UTF-8")); |
| } |
| bb1.flip(); |
| sc.write(bb1); |
| |
| // now we put the channel into non-blocking mode and we read the |
| // reply from the service into a second buffer. |
| |
| ByteBuffer bb2 = ByteBuffer.allocate(size+100); |
| sc.configureBlocking(false); |
| Selector sel = sc.provider().openSelector(); |
| SelectionKey sk = sc.register(sel, SelectionKey.OP_READ); |
| int nread = 0; |
| long to = 5000; |
| while (nread < size) { |
| long st = System.currentTimeMillis(); |
| sel.select(to); |
| if (sk.isReadable()) { |
| int n = sc.read(bb2); |
| if (n > 0) { |
| nread += n; |
| } |
| if (n < 0) { |
| break; // EOF |
| } |
| } |
| sel.selectedKeys().remove(sk); |
| to -= System.currentTimeMillis() - st; |
| if (to <= 0) { |
| break; |
| } |
| } |
| sc.close(); |
| |
| // and compare the response |
| |
| boolean err = false; |
| |
| if (nread != size) { |
| err = true; |
| } else { |
| bb1.flip(); |
| bb2.flip(); |
| while (bb1.hasRemaining()) { |
| if (bb1.get() != bb2.get()) { |
| err = true; |
| } |
| } |
| } |
| |
| // if error print out the response from the service (could be a stack trace) |
| if (err) { |
| System.err.println("Bad response or premature EOF, bytes read: "); |
| bb2.flip(); |
| while (bb2.hasRemaining()) { |
| char c = (char)bb2.get(); |
| System.out.print(c); |
| } |
| throw new RuntimeException("Bad response or premature EOF from service"); |
| } |
| } |
| |
| /* |
| * Send a UDP packet to the service, wait for a reply (with timeout). Finally |
| * check that the packet is the same length as the original. |
| */ |
| private static void UDPEchoTest() throws IOException { |
| DatagramChannel dc = Launcher.launchWithDatagramChannel(ECHO_SERVICE, null); |
| |
| String msg = "I was out saving the galaxy when your grandfather was in diapers"; |
| |
| ByteBuffer bb = ByteBuffer.wrap(msg.getBytes("UTF-8")); |
| dc.write(bb); |
| |
| // and receive the echo |
| byte b[] = new byte[msg.length() + 100]; |
| DatagramPacket pkt2 = new DatagramPacket(b, b.length); |
| dc.socket().setSoTimeout(2000); |
| dc.socket().receive(pkt2); |
| |
| if (pkt2.getLength() != msg.length()) { |
| throw new RuntimeException("Received packet of incorrect length"); |
| } |
| |
| dc.close(); |
| } |
| |
| public static void main(String args[]) throws IOException { |
| |
| // TCP echo |
| try { |
| TCPEchoTest(); |
| System.out.println("TCP echo test passed."); |
| } catch (Exception x) { |
| System.err.println(x); |
| failures++; |
| } |
| |
| // UDP echo |
| try { |
| UDPEchoTest(); |
| System.out.println("UDP echo test passed."); |
| } catch (Exception x) { |
| x.printStackTrace(); |
| System.err.println(x); |
| failures++; |
| } |
| |
| if (failures > 0) { |
| throw new RuntimeException("Test failed - see log for details"); |
| } |
| } |
| |
| } |