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OioEventLoopTest Class — netty Architecture

Architecture documentation for the OioEventLoopTest class in OioEventLoopTest.java from the netty codebase.

Class java

Entity Profile

Dependency Diagram

graph TD
  014786d9_6185_4241_3f9d_b335998e5758["OioEventLoopTest"]
  dc037dcb_87f2_6729_67de_f4f1983623e3["OioEventLoopTest.java"]
  014786d9_6185_4241_3f9d_b335998e5758 -->|defined in| dc037dcb_87f2_6729_67de_f4f1983623e3
  6b4900fc_9600_3087_715b_7b5fc25aa68f["testTooManyServerChannels()"]
  014786d9_6185_4241_3f9d_b335998e5758 -->|method| 6b4900fc_9600_3087_715b_7b5fc25aa68f
  06009fe4_ec47_85ba_f107_ac2fb00423dc["testTooManyClientChannels()"]
  014786d9_6185_4241_3f9d_b335998e5758 -->|method| 06009fe4_ec47_85ba_f107_ac2fb00423dc
  f0c3c5bd_4143_f926_c9ba_887b9f1b7847["testTooManyAcceptedChannels()"]
  014786d9_6185_4241_3f9d_b335998e5758 -->|method| f0c3c5bd_4143_f926_c9ba_887b9f1b7847

Relationship Graph

Source Code

transport/src/test/java/io/netty/channel/oio/OioEventLoopTest.java lines 39–116

public class OioEventLoopTest {
    @Test
    public void testTooManyServerChannels() throws Exception {
        EventLoopGroup g = new OioEventLoopGroup(1);
        ServerBootstrap b = new ServerBootstrap();
        b.channel(OioServerSocketChannel.class);
        b.group(g);
        b.childHandler(new ChannelInboundHandlerAdapter());
        ChannelFuture f1 = b.bind(0);
        f1.sync();

        ChannelFuture f2 = b.bind(0);
        f2.await();

        assertInstanceOf(ChannelException.class, f2.cause());
        assertThat(f2.cause().getMessage().toLowerCase()).contains("too many channels");

        final CountDownLatch notified = new CountDownLatch(1);
        f2.addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception {
                notified.countDown();
            }
        });

        notified.await();
        g.shutdownGracefully();
    }

    @Test
    public void testTooManyClientChannels() throws Exception {
        EventLoopGroup g = new OioEventLoopGroup(1);
        ServerBootstrap sb = new ServerBootstrap();
        sb.channel(OioServerSocketChannel.class);
        sb.group(g);
        sb.childHandler(new ChannelInboundHandlerAdapter());
        ChannelFuture f1 = sb.bind(0);
        f1.sync();

        Bootstrap cb = new Bootstrap();
        cb.channel(OioSocketChannel.class);
        cb.group(g);
        cb.handler(new ChannelInboundHandlerAdapter());
        ChannelFuture f2 = cb.connect(NetUtil.LOCALHOST, ((InetSocketAddress) f1.channel().localAddress()).getPort());
        f2.await();

        assertInstanceOf(ChannelException.class, f2.cause());
        assertThat(f2.cause().getMessage().toLowerCase()).contains("too many channels");

        final CountDownLatch notified = new CountDownLatch(1);
        f2.addListener(new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception {
                notified.countDown();
            }
        });

        notified.await();
        g.shutdownGracefully();
    }

    @Test
    public void testTooManyAcceptedChannels() throws Exception {
        EventLoopGroup g = new OioEventLoopGroup(1);
        ServerBootstrap sb = new ServerBootstrap();
        sb.channel(OioServerSocketChannel.class);
        sb.group(g);
        sb.childHandler(new ChannelInboundHandlerAdapter());
        ChannelFuture f1 = sb.bind(0);
        f1.sync();

        Socket s = new Socket(NetUtil.LOCALHOST, ((InetSocketAddress) f1.channel().localAddress()).getPort());
        assertEquals(-1, s.getInputStream().read());
        s.close();

        g.shutdownGracefully();
    }
}

Defined In

Source

Frequently Asked Questions

What is the OioEventLoopTest class?
OioEventLoopTest is a class in the netty codebase, defined in transport/src/test/java/io/netty/channel/oio/OioEventLoopTest.java.
Where is OioEventLoopTest defined?
OioEventLoopTest is defined in transport/src/test/java/io/netty/channel/oio/OioEventLoopTest.java at line 39.

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