Examples with DatagramChannel java.nio.channels.DatagramChannel used on opensource projects

Example 66 with DatagramChannel

use of java.nio.channels.DatagramChannel in project j2objc by google.

the class DatagramChannelMulticastTest method check_block_filtersAsExpected.

private void check_block_filtersAsExpected(InetAddress senderBindAddress, InetAddress receiverBindAddress, InetAddress groupAddress, NetworkInterface networkInterface) throws Exception {
    DatagramChannel sendingChannel = DatagramChannel.open();
    // In order to block a sender the sender's address must be known. The sendingChannel is
    // explicitly bound to a known, non-loopback address.
    sendingChannel.bind(new InetSocketAddress(senderBindAddress, 0));
    InetSocketAddress sendingAddress = (InetSocketAddress) sendingChannel.getLocalAddress();
    DatagramChannel receivingChannel = DatagramChannel.open();
    configureChannelForReceiving(receivingChannel);
    receivingChannel.bind(new InetSocketAddress(receiverBindAddress, 0));
    InetSocketAddress localReceivingAddress = (InetSocketAddress) receivingChannel.getLocalAddress();
    InetSocketAddress groupSocketAddress = new InetSocketAddress(groupAddress, localReceivingAddress.getPort());
    MembershipKey membershipKey = receivingChannel.join(groupSocketAddress.getAddress(), networkInterface);
    ByteBuffer receiveBuffer = ByteBuffer.allocate(10);
    BindableChannel channel = new BindableChannel(sendingChannel, networkInterface);
    // Send a message. It should be received.
    String msg1 = "Hello1";
    channel.sendMulticastMessage(msg1, groupSocketAddress);
    Net.poll(receivingChannel.socket().getFileDescriptor$(), POLLIN, 1000);
    InetSocketAddress sourceAddress1 = (InetSocketAddress) receiveExpectedDatagram(receivingChannel, receiveBuffer);
    assertEquals(sourceAddress1, sendingAddress);
    assertEquals(msg1, new String(receiveBuffer.array(), 0, receiveBuffer.position()));
    // Now block the sender
    membershipKey.block(sendingAddress.getAddress());
    // Send a message. It should be filtered.
    String msg2 = "Hello2";
    channel.sendMulticastMessage(msg2, groupSocketAddress);
    try {
        Net.poll(receivingChannel.socket().getFileDescriptor$(), POLLIN, 1000);
        fail();
    } catch (SocketTimeoutException expected) {
    }
    receiveBuffer.position(0);
    checkNoDatagramReceived(receivingChannel);
    // Now unblock the sender
    membershipKey.unblock(sendingAddress.getAddress());
    // Send a message. It should be received.
    String msg3 = "Hello3";
    channel.sendMulticastMessage(msg3, groupSocketAddress);
    Net.poll(receivingChannel.socket().getFileDescriptor$(), POLLIN, 1000);
    receiveBuffer.position(0);
    InetSocketAddress sourceAddress3 = (InetSocketAddress) receiveExpectedDatagram(receivingChannel, receiveBuffer);
    assertEquals(sourceAddress3, sendingAddress);
    assertEquals(msg3, new String(receiveBuffer.array(), 0, receiveBuffer.position()));
    sendingChannel.close();
    receivingChannel.close();
}

Example 67 with DatagramChannel

use of java.nio.channels.DatagramChannel in project j2objc by google.

the class DatagramChannelMulticastTest method test_block_cannotBlockWithSourceSpecificMembership.

public void test_block_cannotBlockWithSourceSpecificMembership() throws Exception {
    if (!supportsMulticast) {
        return;
    }
    DatagramChannel dc = createReceiverChannel();
    MembershipKey membershipKey = dc.join(GOOD_MULTICAST_IPv4, ipv4NetworkInterface, UNICAST_IPv4_1);
    try {
        membershipKey.block(UNICAST_IPv4_2);
        fail();
    } catch (IllegalStateException expected) {
    }
    dc.close();
}

Example 68 with DatagramChannel

use of java.nio.channels.DatagramChannel in project j2objc by google.

the class DatagramChannelMulticastTest method test_joinSourceSpecific_nullGroupAddress.

public void test_joinSourceSpecific_nullGroupAddress() throws Exception {
    if (!supportsMulticast) {
        return;
    }
    DatagramChannel dc = createReceiverChannel();
    try {
        dc.join(null, ipv4NetworkInterface, UNICAST_IPv4_1);
        fail();
    } catch (NullPointerException expected) {
    }
    dc.close();
}

Example 69 with DatagramChannel

use of java.nio.channels.DatagramChannel in project j2objc by google.

the class DatagramChannelMulticastTest method test_joinAnySource_nullGroupAddress.

public void test_joinAnySource_nullGroupAddress() throws Exception {
    if (!supportsMulticast) {
        return;
    }
    DatagramChannel dc = createReceiverChannel();
    try {
        dc.join(null, ipv4NetworkInterface);
        fail();
    } catch (NullPointerException expected) {
    }
    dc.close();
}

Example 70 with DatagramChannel

use of java.nio.channels.DatagramChannel in project j2objc by google.

the class DatagramChannelMulticastTest method test_joinAnySource_blockLimit.

public void test_joinAnySource_blockLimit() throws Exception {
    if (!supportsMulticast) {
        return;
    }
    DatagramChannel dc = createReceiverChannel();
    MembershipKey key = dc.join(GOOD_MULTICAST_IPv4, ipv4NetworkInterface);
    for (byte i = 1; i <= 15; i++) {
        InetAddress sourceAddress = Inet4Address.getByName("10.0.0." + i);
        try {
            key.block(sourceAddress);
        } catch (SocketException e) {
            // There is a limit, that's ok according to the RI docs. For this test a lower bound of 10
            // is used, which appears to be the default linux limit.
            // See /proc/sys/net/ipv4/igmp_max_msf
            assertTrue(i > 10);
            break;
        }
    }
    dc.close();
}