Java Code Examples for io.netty.channel.embedded.EmbeddedChannel#readInbound()

private static void testSocksCmdResponseDecoderWithDifferentParams(
        SocksCmdStatus cmdStatus, SocksAddressType addressType, String host, int port) {
    logger.debug("Testing cmdStatus: " + cmdStatus + " addressType: " + addressType);
    SocksResponse msg = new SocksCmdResponse(cmdStatus, addressType, host, port);
    SocksCmdResponseDecoder decoder = new SocksCmdResponseDecoder();
    EmbeddedChannel embedder = new EmbeddedChannel(decoder);
    SocksCommonTestUtils.writeMessageIntoEmbedder(embedder, msg);
    if (addressType == SocksAddressType.UNKNOWN) {
        assertTrue(embedder.readInbound() instanceof UnknownSocksResponse);
    } else {
        msg = embedder.readInbound();
        assertEquals(((SocksCmdResponse) msg).cmdStatus(), cmdStatus);
        if (host != null) {
            assertEquals(((SocksCmdResponse) msg).host(), host);
        }
        assertEquals(((SocksCmdResponse) msg).port(), port);
    }
    assertNull(embedder.readInbound());
}
 

@Test
public void testIncompleteLinesStrippedDelimiters() {
    EmbeddedChannel ch = new EmbeddedChannel(new DelimiterBasedFrameDecoder(8192, true,
            Delimiters.lineDelimiter()));
    ch.writeInbound(Unpooled.copiedBuffer("Test", Charset.defaultCharset()));
    assertNull(ch.readInbound());
    ch.writeInbound(Unpooled.copiedBuffer("Line\r\ng\r\n", Charset.defaultCharset()));

    ByteBuf buf = ch.readInbound();
    assertEquals("TestLine", buf.toString(Charset.defaultCharset()));

    ByteBuf buf2 = ch.readInbound();
    assertEquals("g", buf2.toString(Charset.defaultCharset()));
    assertNull(ch.readInbound());
    ch.finish();

    buf.release();
    buf2.release();
}
 

@Test
public void testDowngradeHeadersWithContentLength() throws Exception {
    EmbeddedChannel ch = new EmbeddedChannel(new Http2StreamFrameToHttpObjectCodec(true));
    Http2Headers headers = new DefaultHttp2Headers();
    headers.path("/");
    headers.method("GET");
    headers.setInt("content-length", 0);

    assertTrue(ch.writeInbound(new DefaultHttp2HeadersFrame(headers)));

    HttpRequest request = ch.readInbound();
    assertThat(request.uri(), is("/"));
    assertThat(request.method(), is(HttpMethod.GET));
    assertThat(request.protocolVersion(), is(HttpVersion.HTTP_1_1));
    assertFalse(request instanceof FullHttpRequest);
    assertFalse(HttpUtil.isTransferEncodingChunked(request));

    assertThat(ch.readInbound(), is(nullValue()));
    assertFalse(ch.finish());
}
 

@Test
public void testDecodeTwoLineResponseChunked() {
    EmbeddedChannel channel = newChannel();
    assertFalse(channel.writeInbound(newBuffer("200-")));
    assertFalse(channel.writeInbound(newBuffer("Hello\r\n2")));
    assertFalse(channel.writeInbound(newBuffer("00 Ok")));
    assertTrue(channel.writeInbound(newBuffer("\r\n")));
    assertTrue(channel.finish());

    SmtpResponse response = channel.readInbound();
    assertEquals(200, response.code());
    List<CharSequence> sequences = response.details();
    assertEquals(2, sequences.size());

    assertEquals("Hello", sequences.get(0).toString());
    assertEquals("Ok", sequences.get(1).toString());
    assertNull(channel.readInbound());
}
 

@Test
public void shouldRetainCurrentMessageWhenSendingItOut() {
    channel = new EmbeddedChannel(
            new BinaryMemcacheRequestEncoder(),
            new BinaryMemcacheRequestDecoder());

    ByteBuf key = Unpooled.copiedBuffer("Netty", CharsetUtil.UTF_8);
    ByteBuf extras = Unpooled.copiedBuffer("extras", CharsetUtil.UTF_8);
    BinaryMemcacheRequest request = new DefaultBinaryMemcacheRequest(key, extras);

    assertTrue(channel.writeOutbound(request));
    for (;;) {
        ByteBuf buffer = channel.readOutbound();
        if (buffer == null) {
            break;
        }
        channel.writeInbound(buffer);
    }
    BinaryMemcacheRequest read = channel.readInbound();
    read.release();
    // tearDown will call "channel.finish()"
}
 

@Test
public void testSimpleUnmarshalling() throws IOException {
    MarshallerFactory marshallerFactory = createMarshallerFactory();
    MarshallingConfiguration configuration = createMarshallingConfig();

    EmbeddedChannel ch = new EmbeddedChannel(createDecoder(Integer.MAX_VALUE));

    ByteArrayOutputStream bout = new ByteArrayOutputStream();
    Marshaller marshaller = marshallerFactory.createMarshaller(configuration);
    marshaller.start(Marshalling.createByteOutput(bout));
    marshaller.writeObject(testObject);
    marshaller.finish();
    marshaller.close();

    byte[] testBytes = bout.toByteArray();

    ch.writeInbound(input(testBytes));
    assertTrue(ch.finish());

    String unmarshalled = ch.readInbound();

    assertEquals(testObject, unmarshalled);

    assertNull(ch.readInbound());
}
 

private static void runUnsupportedExceptHeaderExceptionTest(final boolean close) {
    final HttpObjectAggregator aggregator;
    final int maxContentLength = 4;
    if (close) {
        aggregator = new HttpObjectAggregator(maxContentLength, true);
    } else {
        aggregator = new HttpObjectAggregator(maxContentLength);
    }
    final EmbeddedChannel embedder = new EmbeddedChannel(new HttpRequestDecoder(), aggregator);

    assertFalse(embedder.writeInbound(Unpooled.copiedBuffer(
            "GET / HTTP/1.1\r\n" +
                    "Expect: chocolate=yummy\r\n" +
                    "Content-Length: 100\r\n\r\n", CharsetUtil.US_ASCII)));
    assertNull(embedder.readInbound());

    final FullHttpResponse response = embedder.readOutbound();
    assertEquals(HttpResponseStatus.EXPECTATION_FAILED, response.status());
    assertEquals("0", response.headers().get(HttpHeaderNames.CONTENT_LENGTH));
    response.release();

    if (close) {
        assertFalse(embedder.isOpen());
    } else {
        // keep-alive is on by default in HTTP/1.1, so the connection should be still alive
        assertTrue(embedder.isOpen());

        // the decoder should be reset by the aggregator at this point and be able to decode the next request
        assertTrue(embedder.writeInbound(Unpooled.copiedBuffer("GET / HTTP/1.1\r\n\r\n", CharsetUtil.US_ASCII)));

        final FullHttpRequest request = embedder.readInbound();
        assertThat(request.method(), is(HttpMethod.GET));
        assertThat(request.uri(), is("/"));
        assertThat(request.content().readableBytes(), is(0));
        request.release();
    }

    assertFalse(embedder.finish());
}
 

@Test
public void testEmptyHeaderValue() {
    EmbeddedChannel channel = new EmbeddedChannel(new HttpRequestDecoder());
    String crlf = "\r\n";
    String request =  "GET /some/path HTTP/1.1" + crlf +
            "Host: localhost" + crlf +
            "EmptyHeader:" + crlf + crlf;
    channel.writeInbound(Unpooled.wrappedBuffer(request.getBytes(CharsetUtil.US_ASCII)));
    HttpRequest req = (HttpRequest) channel.readInbound();
    assertEquals("", req.headers().get("EmptyHeader"));
}
 

@Test
public void testRequestWithBadHeader() throws Exception {
    EmbeddedChannel ch = new EmbeddedChannel(new HttpRequestDecoder());
    ch.writeInbound(Unpooled.copiedBuffer("GET /maybe-something HTTP/1.0\r\n", CharsetUtil.UTF_8));
    ch.writeInbound(Unpooled.copiedBuffer("Good_Name: Good Value\r\n", CharsetUtil.UTF_8));
    ch.writeInbound(Unpooled.copiedBuffer("Bad=Name: Bad Value\r\n", CharsetUtil.UTF_8));
    ch.writeInbound(Unpooled.copiedBuffer("\r\n", CharsetUtil.UTF_8));
    HttpRequest req = ch.readInbound();
    DecoderResult dr = req.decoderResult();
    assertFalse(dr.isSuccess());
    assertTrue(dr.isFailure());
    assertEquals("Good Value", req.headers().get(of("Good_Name")));
    assertEquals("/maybe-something", req.uri());
    ensureInboundTrafficDiscarded(ch);
}
 

@Test
public void testRequestWithBadInitialLine() throws Exception {
    EmbeddedChannel ch = new EmbeddedChannel(new HttpRequestDecoder());
    ch.writeInbound(Unpooled.copiedBuffer("GET / HTTP/1.0 with extra\r\n", CharsetUtil.UTF_8));
    HttpRequest req = ch.readInbound();
    DecoderResult dr = req.decoderResult();
    assertFalse(dr.isSuccess());
    assertTrue(dr.isFailure());
    ensureInboundTrafficDiscarded(ch);
}
 

private void testCompressNone(ZlibWrapper encoderWrapper, ZlibWrapper decoderWrapper) throws Exception {
    EmbeddedChannel chEncoder = new EmbeddedChannel(createEncoder(encoderWrapper));
    EmbeddedChannel chDecoderZlib = new EmbeddedChannel(createDecoder(decoderWrapper));

    try {
        // Closing an encoder channel without writing anything should generate both header and footer.
        assertTrue(chEncoder.finish());

        for (;;) {
            ByteBuf deflatedData = chEncoder.readOutbound();
            if (deflatedData == null) {
                break;
            }
            chDecoderZlib.writeInbound(deflatedData);
        }

        // Decoder should not generate anything at all.
        boolean decoded = false;
        for (;;) {
            ByteBuf buf = chDecoderZlib.readInbound();
            if (buf == null) {
                break;
            }

            buf.release();
            decoded = true;
        }
        assertFalse("should decode nothing", decoded);

        assertFalse(chDecoderZlib.finish());
    } finally {
        dispose(chEncoder);
        dispose(chDecoderZlib);
    }
}
 

@Test
public void testChunkedHeadResponse() {
    EmbeddedChannel ch = new EmbeddedChannel(new HttpServerCodec());

    // Send the request headers.
    assertTrue(ch.writeInbound(Unpooled.copiedBuffer(
            "HEAD / HTTP/1.1\r\n\r\n", CharsetUtil.UTF_8)));

    HttpRequest request = ch.readInbound();
    assertEquals(HttpMethod.HEAD, request.method());
    LastHttpContent content = ch.readInbound();
    assertFalse(content.content().isReadable());
    content.release();

    HttpResponse response = new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK);
    HttpUtil.setTransferEncodingChunked(response, true);
    assertTrue(ch.writeOutbound(response));
    assertTrue(ch.writeOutbound(LastHttpContent.EMPTY_LAST_CONTENT));
    assertTrue(ch.finish());

    ByteBuf buf = ch.readOutbound();
    assertEquals("HTTP/1.1 200 OK\r\ntransfer-encoding: chunked\r\n\r\n", buf.toString(CharsetUtil.US_ASCII));
    buf.release();

    buf = ch.readOutbound();
    assertFalse(buf.isReadable());
    buf.release();

    assertFalse(ch.finishAndReleaseAll());
}
 

/**
 * Tests decoding a frame that is too long because of the header length.
 */
@Test
public void testDecodeFrame_LongHeaders() {

  int maxFrameSize = 2 * 1024;

  String header1 = "header1:";
  for (int i = 0; i < maxFrameSize / 2; ++i) {
    header1 += 'a';
  }
  String header2 = "header2:";
  for (int i = 0; i < maxFrameSize / 2; ++i) {
    header1 += 'b';
  }

  EmbeddedChannel ec =
      new EmbeddedChannel(new StompFrameDecoder(maxFrameSize));

  final byte[] body = "This is the body.".getBytes(UTF_8);

  ByteBuf buf = Unpooled.buffer();
  buf.writeBytes(Command.CONNECT.name().getBytes(UTF_8));
  buf.writeByte(LINE_FEED_CHAR);
  buf.writeBytes(header1.getBytes(UTF_8));
  buf.writeByte(LINE_FEED_CHAR);
  buf.writeBytes(header2.getBytes(UTF_8));
  buf.writeByte(LINE_FEED_CHAR);
  buf.writeByte(LINE_FEED_CHAR);
  buf.writeBytes(body);
  buf.writeByte(NULL_CHAR);
  ec.writeInbound(buf);

  Object actual = ec.readInbound();
  assertNotNull(actual);
  assertTrue(actual instanceof Frame);

  Frame actualFrame = (Frame) actual;
  assertTrue(actualFrame.getHeaders().getHeaderNames().contains(
      StompFrameDecoder.HEADER_BAD_REQUEST));
}
 

@Test
public void testGarbageHeaders() {
    // A response without headers - from https://github.com/netty/netty/issues/2103
    byte[] data = ("<html>\r\n" +
            "<head><title>400 Bad Request</title></head>\r\n" +
            "<body bgcolor=\"white\">\r\n" +
            "<center><h1>400 Bad Request</h1></center>\r\n" +
            "<hr><center>nginx/1.1.19</center>\r\n" +
            "</body>\r\n" +
            "</html>\r\n").getBytes();

    EmbeddedChannel ch = new EmbeddedChannel(new HttpResponseDecoder());

    ch.writeInbound(Unpooled.wrappedBuffer(data));

    // Garbage input should generate the 999 Unknown response.
    HttpResponse res = ch.readInbound();
    assertThat(res.protocolVersion(), sameInstance(HttpVersion.HTTP_1_0));
    assertThat(res.status().code(), is(999));
    assertThat(res.decoderResult().isFailure(), is(true));
    assertThat(res.decoderResult().isFinished(), is(true));
    assertThat(ch.readInbound(), is(nullValue()));

    // More garbage should not generate anything (i.e. the decoder discards anything beyond this point.)
    ch.writeInbound(Unpooled.wrappedBuffer(data));
    assertThat(ch.readInbound(), is(nullValue()));

    // Closing the connection should not generate anything since the protocol has been violated.
    ch.finish();
    assertThat(ch.readInbound(), is(nullValue()));
}
 

@Test
public void testAggregateWithTrailer() {
    HttpObjectAggregator aggr = new HttpObjectAggregator(1024 * 1024);
    EmbeddedChannel embedder = new EmbeddedChannel(aggr);
    HttpRequest message = new DefaultHttpRequest(HttpVersion.HTTP_1_1,
            HttpMethod.GET, "http://localhost");
    HttpHeaders.setHeader(message, "X-Test", true);
    HttpHeaders.setTransferEncodingChunked(message);
    HttpContent chunk1 = new DefaultHttpContent(Unpooled.copiedBuffer("test", CharsetUtil.US_ASCII));
    HttpContent chunk2 = new DefaultHttpContent(Unpooled.copiedBuffer("test2", CharsetUtil.US_ASCII));
    LastHttpContent trailer = new DefaultLastHttpContent();
    trailer.trailingHeaders().set("X-Trailer", true);

    assertFalse(embedder.writeInbound(message));
    assertFalse(embedder.writeInbound(chunk1));
    assertFalse(embedder.writeInbound(chunk2));

    // this should trigger a channelRead event so return true
    assertTrue(embedder.writeInbound(trailer));
    assertTrue(embedder.finish());
    FullHttpRequest aggratedMessage = (FullHttpRequest) embedder.readInbound();
    assertNotNull(aggratedMessage);

    assertEquals(chunk1.content().readableBytes() + chunk2.content().readableBytes(),
            HttpHeaders.getContentLength(aggratedMessage));
    assertEquals(aggratedMessage.headers().get("X-Test"), Boolean.TRUE.toString());
    assertEquals(aggratedMessage.trailingHeaders().get("X-Trailer"), Boolean.TRUE.toString());
    checkContentBuffer(aggratedMessage);
    assertNull(embedder.readInbound());
}
 

@Test
public void testUpgradeRejected() {
    HttpClientUpgradeHandler.SourceCodec sourceCodec = new FakeSourceCodec();
    HttpClientUpgradeHandler.UpgradeCodec upgradeCodec = new FakeUpgradeCodec();
    HttpClientUpgradeHandler handler = new HttpClientUpgradeHandler(sourceCodec, upgradeCodec, 1024);
    UserEventCatcher catcher = new UserEventCatcher();
    EmbeddedChannel channel = new EmbeddedChannel(catcher);
    channel.pipeline().addFirst("upgrade", handler);

    assertTrue(
        channel.writeOutbound(new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, "netty.io")));
    FullHttpRequest request = channel.readOutbound();

    assertEquals(2, request.headers().size());
    assertTrue(request.headers().contains(HttpHeaderNames.UPGRADE, "fancyhttp", false));
    assertTrue(request.headers().contains("connection", "upgrade", false));
    assertTrue(request.release());
    assertEquals(HttpClientUpgradeHandler.UpgradeEvent.UPGRADE_ISSUED, catcher.getUserEvent());

    HttpResponse upgradeResponse =
        new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.SWITCHING_PROTOCOLS);
    upgradeResponse.headers().add(HttpHeaderNames.UPGRADE, "fancyhttp");
    assertTrue(channel.writeInbound(new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK)));
    assertTrue(channel.writeInbound(LastHttpContent.EMPTY_LAST_CONTENT));

    assertEquals(HttpClientUpgradeHandler.UpgradeEvent.UPGRADE_REJECTED, catcher.getUserEvent());
    assertNull(channel.pipeline().get("upgrade"));

    HttpResponse response = channel.readInbound();
    assertEquals(HttpResponseStatus.OK, response.status());

    LastHttpContent last = channel.readInbound();
    assertEquals(LastHttpContent.EMPTY_LAST_CONTENT, last);
    assertFalse(last.release());
    assertFalse(channel.finish());
}
 

private static void testResponseWithContentLengthFragmented(byte[] header, int fragmentSize) {
    EmbeddedChannel ch = new EmbeddedChannel(new HttpResponseDecoder());
    // split up the header
    for (int a = 0; a < header.length;) {
        int amount = fragmentSize;
        if (a + amount > header.length) {
            amount = header.length -  a;
        }

        ch.writeInbound(Unpooled.wrappedBuffer(header, a, amount));
        a += amount;
    }
    byte[] data = new byte[10];
    for (int i = 0; i < data.length; i++) {
        data[i] = (byte) i;
    }
    ch.writeInbound(Unpooled.wrappedBuffer(data, 0, data.length / 2));
    ch.writeInbound(Unpooled.wrappedBuffer(data, 5, data.length / 2));

    HttpResponse res = ch.readInbound();
    assertThat(res.protocolVersion(), sameInstance(HttpVersion.HTTP_1_1));
    assertThat(res.status(), is(HttpResponseStatus.OK));

    HttpContent firstContent = ch.readInbound();
    assertThat(firstContent.content().readableBytes(), is(5));
    assertEquals(Unpooled.wrappedBuffer(data, 0, 5), firstContent.content());
    firstContent.release();

    LastHttpContent lastContent = ch.readInbound();
    assertEquals(5, lastContent.content().readableBytes());
    assertEquals(Unpooled.wrappedBuffer(data, 5, 5), lastContent.content());
    lastContent.release();

    assertThat(ch.finish(), is(false));
    assertThat(ch.readInbound(), is(nullValue()));
}
 

private static void testLastResponseWithTrailingHeaderFragmented(byte[] content, int fragmentSize) {
    EmbeddedChannel ch = new EmbeddedChannel(new HttpResponseDecoder());
    int headerLength = 47;
    // split up the header
    for (int a = 0; a < headerLength;) {
        int amount = fragmentSize;
        if (a + amount > headerLength) {
            amount = headerLength -  a;
        }

        // if header is done it should produce a HttpRequest
        boolean headerDone = a + amount == headerLength;
        assertEquals(headerDone, ch.writeInbound(Unpooled.wrappedBuffer(content, a, amount)));
        a += amount;
    }

    ch.writeInbound(Unpooled.wrappedBuffer(content, headerLength, content.length - headerLength));
    HttpResponse res = ch.readInbound();
    assertThat(res.protocolVersion(), sameInstance(HttpVersion.HTTP_1_1));
    assertThat(res.status(), is(HttpResponseStatus.OK));

    LastHttpContent lastContent = ch.readInbound();
    assertThat(lastContent.content().isReadable(), is(false));
    HttpHeaders headers = lastContent.trailingHeaders();
    assertEquals(1, headers.names().size());
    List<String> values = headers.getAll(of("Set-Cookie"));
    assertEquals(2, values.size());
    assertTrue(values.contains("t1=t1v1"));
    assertTrue(values.contains("t2=t2v2; Expires=Wed, 09-Jun-2021 10:18:14 GMT"));
    lastContent.release();

    assertThat(ch.finish(), is(false));
    assertThat(ch.readInbound(), is(nullValue()));
}
 

/**
 * Tests decoding a single, simple frame.
 */
@Test
public void testDecodeFrame() {

  EmbeddedChannel ec = new EmbeddedChannel(new StompFrameDecoder());

  final byte[] body = "This is the body.".getBytes(UTF_8);

  ByteBuf buf = Unpooled.buffer();
  buf.writeBytes(Command.CONNECT.name().getBytes(UTF_8));
  buf.writeByte(LINE_FEED_CHAR);
  buf.writeBytes("header1:value1".getBytes(UTF_8));
  buf.writeByte(LINE_FEED_CHAR);
  buf.writeByte(LINE_FEED_CHAR);
  buf.writeBytes(body);
  buf.writeByte(NULL_CHAR);
  ec.writeInbound(buf);

  Object actual = ec.readInbound();
  assertNotNull(actual);
  assertTrue(actual instanceof Frame);

  Frame actualFrame = (Frame) actual;
  assertEquals(Command.CONNECT, actualFrame.getCommand());
  assertEquals(1, actualFrame.getHeaders().getHeaderNames().size());
  assertTrue(actualFrame.getHeaders().getHeaderNames().contains("header1"));
  assertArrayEquals(body, actualFrame.getBody());
}
 

@Test
public void testMainSuccess() {
    // initialize
    when(mainHandshakerMock.newRequestData()).
            thenReturn(new WebSocketExtensionData("main", Collections.<String, String>emptyMap()));
    when(mainHandshakerMock.handshakeExtension(any(WebSocketExtensionData.class))).thenReturn(mainExtensionMock);
    when(fallbackHandshakerMock.newRequestData()).
            thenReturn(new WebSocketExtensionData("fallback", Collections.<String, String>emptyMap()));
    when(mainExtensionMock.rsv()).thenReturn(WebSocketExtension.RSV1);
    when(mainExtensionMock.newExtensionEncoder()).thenReturn(new DummyEncoder());
    when(mainExtensionMock.newExtensionDecoder()).thenReturn(new DummyDecoder());

    // execute
    EmbeddedChannel ch = new EmbeddedChannel(new WebSocketClientExtensionHandler(
            mainHandshakerMock, fallbackHandshakerMock));

    HttpRequest req = newUpgradeRequest(null);
    ch.writeOutbound(req);

    HttpRequest req2 = ch.readOutbound();
    List<WebSocketExtensionData> reqExts = WebSocketExtensionUtil.extractExtensions(
            req2.headers().get(HttpHeaderNames.SEC_WEBSOCKET_EXTENSIONS));

    HttpResponse res = newUpgradeResponse("main");
    ch.writeInbound(res);

    HttpResponse res2 = ch.readInbound();
    List<WebSocketExtensionData> resExts = WebSocketExtensionUtil.extractExtensions(
            res2.headers().get(HttpHeaderNames.SEC_WEBSOCKET_EXTENSIONS));

    // test
    assertEquals(2, reqExts.size());
    assertEquals("main", reqExts.get(0).name());
    assertEquals("fallback", reqExts.get(1).name());

    assertEquals(1, resExts.size());
    assertEquals("main", resExts.get(0).name());
    assertTrue(resExts.get(0).parameters().isEmpty());
    assertNotNull(ch.pipeline().get(DummyDecoder.class));
    assertNotNull(ch.pipeline().get(DummyEncoder.class) != null);

    verify(mainHandshakerMock).newRequestData();
    verify(mainHandshakerMock).handshakeExtension(any(WebSocketExtensionData.class));
    verify(fallbackHandshakerMock).newRequestData();
    verify(mainExtensionMock, atLeastOnce()).rsv();
    verify(mainExtensionMock).newExtensionEncoder();
    verify(mainExtensionMock).newExtensionDecoder();
}