testStreamLimitEnforcedWhenCreatingViaClient() — netty Function Reference

Source Code

codec-native-quic/src/test/java/io/netty/handler/codec/quic/QuicStreamLimitTest.java lines 49–120

    private static void testStreamLimitEnforcedWhenCreatingViaClient(Executor executor, QuicStreamType type)
            throws Throwable {
        QuicChannelValidationHandler serverHandler = new QuicChannelValidationHandler();
        Channel server = QuicTestUtils.newServer(
                QuicTestUtils.newQuicServerBuilder(executor).initialMaxStreamsBidirectional(1)
                        .initialMaxStreamsUnidirectional(1),
                InsecureQuicTokenHandler.INSTANCE,
                serverHandler, new ChannelInboundHandlerAdapter() {
                    @Override
                    public boolean isSharable() {
                        return true;
                    }

                    @Override
                    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
                        if (evt == ChannelInputShutdownReadComplete.INSTANCE) {
                            ctx.close();
                        }
                    }
                });
        InetSocketAddress address = (InetSocketAddress) server.localAddress();
        Channel channel = QuicTestUtils.newClient(executor);

        CountDownLatch latch = new CountDownLatch(1);
        CountDownLatch latch2 = new CountDownLatch(1);
        QuicChannelValidationHandler clientHandler = new QuicChannelValidationHandler() {
            @Override
            public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
                if (evt instanceof QuicStreamLimitChangedEvent) {
                    if (latch.getCount() == 0) {
                        latch2.countDown();
                    } else {
                        latch.countDown();
                    }
                }
                super.userEventTriggered(ctx, evt);
            }
        };
        try {
            QuicChannel quicChannel = QuicTestUtils.newQuicChannelBootstrap(channel)
                    .handler(clientHandler)
                    .streamHandler(new ChannelInboundHandlerAdapter())
                    .remoteAddress(address)
                    .connect().get();
            latch.await();
            assertEquals(1, quicChannel.peerAllowedStreams(QuicStreamType.UNIDIRECTIONAL));
            assertEquals(1, quicChannel.peerAllowedStreams(QuicStreamType.BIDIRECTIONAL));
            QuicStreamChannel stream = quicChannel.createStream(
                    type, new ChannelInboundHandlerAdapter()).get();

            assertEquals(0, quicChannel.peerAllowedStreams(type));

            // Second stream creation should fail.
            Throwable cause = quicChannel.createStream(
                    type, new ChannelInboundHandlerAdapter()).await().cause();
            assertInstanceOf(QuicException.class, cause);
            stream.close().sync();
            latch2.await();

            assertEquals(1, quicChannel.peerAllowedStreams(type));
            quicChannel.close().sync();

            serverHandler.assertState();
            clientHandler.assertState();
        } finally {
            server.close().sync();
            // Close the parent Datagram channel as well.
            channel.close().sync();

            shutdown(executor);
        }
    }