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8085875: java/net/DatagramSocket/PortUnreachable.java fails intermittently: Address already in use

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Reviewed-by: msheppar, clanger
This commit is contained in:
Felix Yang 2017-09-21 20:05:46 -07:00
parent e634950b41
commit 300988fb02
1 changed files with 27 additions and 3 deletions
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30
test/jdk/java/net/DatagramSocket/PortUnreachable.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2017, 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
@ -24,11 +24,11 @@
/**
* @test
* @bug 4361783
* @key intermittent
* @summary Test to see if ICMP Port Unreachable on non-connected
* DatagramSocket causes a SocketException "socket closed"
* exception on Windows 2000.
*/
import java.net.BindException;
import java.net.InetAddress;
import java.net.DatagramSocket;
import java.net.DatagramPacket;
@ -50,7 +50,7 @@ public class PortUnreachable {
serverPort);
clientSock.send(packet);
DatagramSocket sock = new DatagramSocket(serverPort);
DatagramSocket sock = recreateServerSocket(serverPort);
b = "Greetings from the server".getBytes();
packet = new DatagramPacket(b, b.length, addr, clientPort);
sock.send(packet);
@ -60,6 +60,29 @@ public class PortUnreachable {
}
}
DatagramSocket recreateServerSocket (int serverPort) throws Exception {
DatagramSocket serverSocket = null;
int retryCount = 0;
System.out.println("Attempting to recreate server socket with port: " +
serverPort);
while (serverSocket == null) {
try {
serverSocket = new DatagramSocket(serverPort);
} catch (BindException bEx) {
if (retryCount++ < 5) {
Thread.sleep(500);
} else {
System.out.println("Give up after 5 retries");
throw bEx;
}
}
}
System.out.println("PortUnreachableTest.recreateServerSocket: returning socket == "
+ serverSocket.getLocalAddress() + ":" + serverSocket.getLocalPort());
return serverSocket;
}
PortUnreachable() throws Exception {
clientSock = new DatagramSocket();
@ -103,3 +126,4 @@ public class PortUnreachable {
}
}