Example usage for io.netty.handler.codec.http2 Http2Error FRAME_SIZE_ERROR

Introduction

In this page you can find the example usage for io.netty.handler.codec.http2 Http2Error FRAME_SIZE_ERROR.

Prototype

Http2Error FRAME_SIZE_ERROR

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Usage

From source file:com.linecorp.armeria.client.Http2ClientSettingsTest.java

License:Apache License

@Test
public void maxFrameSize() throws Exception {

    try (ServerSocket ss = new ServerSocket(0)) {
        final int port = ss.getLocalPort();

        final ClientFactory clientFactory = new ClientFactoryBuilder().useHttp2Preface(true)
                .http2MaxFrameSize(DEFAULT_MAX_FRAME_SIZE * 2) // == 16384 * 2
                .build();/*from w w w  . j  a va 2s . c o m*/

        final HttpClient client = HttpClient.of(clientFactory, "http://127.0.0.1:" + port);
        final CompletableFuture<AggregatedHttpMessage> future = client.get("/").aggregate();

        try (Socket s = ss.accept()) {
            final InputStream in = s.getInputStream();
            final BufferedOutputStream bos = new BufferedOutputStream(s.getOutputStream());

            readBytes(in, connectionPrefaceBuf().capacity()); // Read the connection preface and discard it.

            // Read a SETTINGS frame and validate it.
            assertSettingsFrameOfMaxFrameSize(in);

            sendEmptySettingsAndAckFrame(bos);

            readBytes(in, 9); // Read a SETTINGS_ACK frame and discard it.
            readHeadersFrame(in); // Read a HEADERS frame and discard it.

            sendHeaderFrame(bos);

            ////////////////////////////////////////
            // Transmission of data gets started. //
            ////////////////////////////////////////

            // Send a DATA frame that indicates sending data as much as 0x8000 for stream id 03.
            bos.write(new byte[] { 0x00, (byte) 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03 });
            bos.write(EMPTY_DATA);
            bos.write(EMPTY_DATA);
            bos.flush();

            readBytes(in, 13); // Read a WINDOW_UPDATE frame for connection and discard it.
            readBytes(in, 13); // Read a WINDOW_UPDATE frame for stream id 03 and discard it.

            // Send a DATA frame that exceed MAX_FRAME_SIZE by 1.
            bos.write(new byte[] { 0x00, (byte) 0x80, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03 });
            bos.flush(); // Triggers the client to send a GOAWAY frame for the connection.

            // The client send a GOAWAY frame and the server read it.
            final ByteBuf buffer = readGoAwayFrame(in);
            final DefaultHttp2FrameReader frameReader = new DefaultHttp2FrameReader();

            final CountDownLatch latch = new CountDownLatch(1);
            frameReader.readFrame(null, buffer, new Http2EventAdapter() {
                @Override
                public void onGoAwayRead(ChannelHandlerContext ctx, int lastStreamId, long errorCode,
                        ByteBuf debugData) throws Http2Exception {
                    assertThat(lastStreamId).isZero(); // 0: connection error
                    assertThat(errorCode).isEqualTo(Http2Error.FRAME_SIZE_ERROR.code());
                    latch.countDown();
                }
            });
            latch.await();
            buffer.release();
        }
    }
}

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