8233435: (dc) DatagramChannel should allow IPv6 socket join IPv4 multicast groups (macOS, win)
Reviewed-by: dfuchs
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/* @test
* @bug 4640544 8044773 8233435
* @summary Unit test for setOption/getOption/options methods
* @requires !vm.graal.enabled
* @library /test/lib
* @build jdk.test.lib.net.IPSupport
* jdk.test.lib.NetworkConfiguration
* SocketOptionTests
* @run main SocketOptionTests
* @run main/othervm -Djava.net.preferIPv4Stack=true SocketOptionTests
* @run main/othervm --limit-modules=java.base SocketOptionTests
*/
import java.nio.*;
import java.nio.channels.*;
import java.net.*;
import java.io.IOException;
import java.util.*;
import static java.net.StandardProtocolFamily.*;
import static java.net.StandardSocketOptions.*;
import jdk.test.lib.NetworkConfiguration;
import jdk.test.lib.net.IPSupport;
public class SocketOptionTests {
public static void main(String[] args) throws IOException {
IPSupport.throwSkippedExceptionIfNonOperational();
NetworkConfiguration config = NetworkConfiguration.probe();
InetAddress ip4Address = config.ip4Addresses().findAny().orElse(null);
InetAddress ip6Address = config.ip6Addresses().findAny().orElse(null);
System.out.println("[UNSPEC, bound to wildcard address]");
try (DatagramChannel dc = DatagramChannel.open()) {
test(dc, new InetSocketAddress(0));
}
if (IPSupport.hasIPv4()) {
System.out.println("[INET, bound to wildcard address]");
try (DatagramChannel dc = DatagramChannel.open(INET)) {
test(dc, new InetSocketAddress(0));
}
System.out.println("[INET, bound to IPv4 address]");
try (DatagramChannel dc = DatagramChannel.open(INET)) {
test(dc, new InetSocketAddress(ip4Address, 0));
}
}
if (IPSupport.hasIPv6()) {
System.out.println("[INET6, bound to wildcard address]");
try (DatagramChannel dc = DatagramChannel.open(INET6)) {
test(dc, new InetSocketAddress(0));
}
System.out.println("[INET6, bound to IPv6 address]");
try (DatagramChannel dc = DatagramChannel.open(INET6)) {
test(dc, new InetSocketAddress(ip6Address, 0));
}
}
if (IPSupport.hasIPv4() && IPSupport.hasIPv6()) {
System.out.println("[UNSPEC, bound to IPv4 address]");
try (DatagramChannel dc = DatagramChannel.open()) {
test(dc, new InetSocketAddress(ip4Address, 0));
}
System.out.println("[INET6, bound to IPv4 address]");
try (DatagramChannel dc = DatagramChannel.open(INET6)) {
test(dc, new InetSocketAddress(ip4Address, 0));
}
}
}
static void test(DatagramChannel dc, SocketAddress localAddress) throws IOException {
// check supported options
Set<SocketOption<?>> options = dc.supportedOptions();
boolean reuseport = options.contains(SO_REUSEPORT);
List<? extends SocketOption<?>> expected;
if (reuseport) {
expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
SO_REUSEADDR, SO_REUSEPORT, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF,
IP_MULTICAST_TTL, IP_MULTICAST_LOOP);
} else {
expected = Arrays.asList(SO_SNDBUF, SO_RCVBUF,
SO_REUSEADDR, SO_BROADCAST, IP_TOS, IP_MULTICAST_IF, IP_MULTICAST_TTL,
IP_MULTICAST_LOOP);
}
for (SocketOption opt: expected) {
if (!options.contains(opt))
throw new RuntimeException(opt.name() + " should be supported");
}
// check specified defaults
checkOption(dc, SO_BROADCAST, false);
checkOption(dc, IP_MULTICAST_TTL, 1); // true on supported platforms
checkOption(dc, IP_MULTICAST_LOOP, true); // true on supported platforms
// allowed to change when not bound
dc.setOption(SO_BROADCAST, true);
checkOption(dc, SO_BROADCAST, true);
dc.setOption(SO_BROADCAST, false);
checkOption(dc, SO_BROADCAST, false);
dc.setOption(SO_SNDBUF, 128*1024); // can't check
dc.setOption(SO_RCVBUF, 128*1024); // can't check
int before, after;
before = dc.getOption(SO_SNDBUF);
after = dc.setOption(SO_SNDBUF, Integer.MAX_VALUE).getOption(SO_SNDBUF);
if (after < before)
throw new RuntimeException("setOption caused SO_SNDBUF to decrease");
before = dc.getOption(SO_RCVBUF);
after = dc.setOption(SO_RCVBUF, Integer.MAX_VALUE).getOption(SO_RCVBUF);
if (after < before)
throw new RuntimeException("setOption caused SO_RCVBUF to decrease");
dc.setOption(SO_REUSEADDR, true);
checkOption(dc, SO_REUSEADDR, true);
dc.setOption(SO_REUSEADDR, false);
checkOption(dc, SO_REUSEADDR, false);
if (reuseport) {
dc.setOption(SO_REUSEPORT, true);
checkOption(dc, SO_REUSEPORT, true);
dc.setOption(SO_REUSEPORT, false);
checkOption(dc, SO_REUSEPORT, false);
}
// bind socket
dc.bind(localAddress);
// allow to change when bound
dc.setOption(SO_BROADCAST, true);
checkOption(dc, SO_BROADCAST, true);
dc.setOption(SO_BROADCAST, false);
checkOption(dc, SO_BROADCAST, false);
dc.setOption(IP_TOS, 0x08); // can't check
dc.setOption(IP_MULTICAST_TTL, 2);
checkOption(dc, IP_MULTICAST_TTL, 2);
dc.setOption(IP_MULTICAST_LOOP, false);
checkOption(dc, IP_MULTICAST_LOOP, false);
dc.setOption(IP_MULTICAST_LOOP, true);
checkOption(dc, IP_MULTICAST_LOOP, true);
// NullPointerException
try {
dc.setOption(null, "value");
throw new RuntimeException("NullPointerException not thrown");
} catch (NullPointerException x) {
}
try {
dc.getOption(null);
throw new RuntimeException("NullPointerException not thrown");
} catch (NullPointerException x) {
}
// ClosedChannelException
dc.close();
try {
dc.setOption(IP_MULTICAST_LOOP, true);
throw new RuntimeException("ClosedChannelException not thrown");
} catch (ClosedChannelException x) {
}
}
static <T> void checkOption(DatagramChannel dc,
SocketOption<T> name,
T expectedValue)
throws IOException
{
T value = dc.getOption(name);
if (!value.equals(expectedValue))
throw new RuntimeException("value not as expected");
}
}