Examples with Http2Headers io.netty.handler.codec.http2.Http2Headers used on opensource projects

Example 36 with Http2Headers

use of io.netty.handler.codec.http2.Http2Headers in project grpc-java by grpc.

the class NettyClientHandler method createStream.

/**
   * Attempts to create a new stream from the given command. If there are too many active streams,
   * the creation request is queued.
   */
private void createStream(CreateStreamCommand command, final ChannelPromise promise) throws Exception {
    if (lifecycleManager.getShutdownThrowable() != null) {
        // The connection is going away, just terminate the stream now.
        promise.setFailure(lifecycleManager.getShutdownThrowable());
        return;
    }
    // Get the stream ID for the new stream.
    final int streamId;
    try {
        streamId = incrementAndGetNextStreamId();
    } catch (StatusException e) {
        // Stream IDs have been exhausted for this connection. Fail the promise immediately.
        promise.setFailure(e);
        // Initiate a graceful shutdown if we haven't already.
        if (!connection().goAwaySent()) {
            logger.fine("Stream IDs have been exhausted for this connection. " + "Initiating graceful shutdown of the connection.");
            lifecycleManager.notifyShutdown(e.getStatus());
            close(ctx(), ctx().newPromise());
        }
        return;
    }
    final NettyClientStream.TransportState stream = command.stream();
    final Http2Headers headers = command.headers();
    stream.setId(streamId);
    // Create an intermediate promise so that we can intercept the failure reported back to the
    // application.
    ChannelPromise tempPromise = ctx().newPromise();
    encoder().writeHeaders(ctx(), streamId, headers, 0, false, tempPromise).addListener(new ChannelFutureListener() {

        @Override
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                // The http2Stream will be null in case a stream buffered in the encoder
                // was canceled via RST_STREAM.
                Http2Stream http2Stream = connection().stream(streamId);
                if (http2Stream != null) {
                    stream.getStatsTraceContext().clientHeadersSent();
                    http2Stream.setProperty(streamKey, stream);
                    // Attach the client stream to the HTTP/2 stream object as user data.
                    stream.setHttp2Stream(http2Stream);
                }
                // Otherwise, the stream has been cancelled and Netty is sending a
                // RST_STREAM frame which causes it to purge pending writes from the
                // flow-controller and delete the http2Stream. The stream listener has already
                // been notified of cancellation so there is nothing to do.
                // Just forward on the success status to the original promise.
                promise.setSuccess();
            } else {
                final Throwable cause = future.cause();
                if (cause instanceof StreamBufferingEncoder.Http2GoAwayException) {
                    StreamBufferingEncoder.Http2GoAwayException e = (StreamBufferingEncoder.Http2GoAwayException) cause;
                    lifecycleManager.notifyShutdown(statusFromGoAway(e.errorCode(), e.debugData()));
                    promise.setFailure(lifecycleManager.getShutdownThrowable());
                } else {
                    promise.setFailure(cause);
                }
            }
        }
    });
}

Example 37 with Http2Headers

use of io.netty.handler.codec.http2.Http2Headers in project grpc-java by grpc.

the class NettyClientHandlerTest method inboundShouldForwardToStream.

@Test
public void inboundShouldForwardToStream() throws Exception {
    createStream();
    // Read a headers frame first.
    Http2Headers headers = new DefaultHttp2Headers().status(STATUS_OK).set(CONTENT_TYPE_HEADER, CONTENT_TYPE_GRPC).set(as("magic"), as("value"));
    ByteBuf headersFrame = headersFrame(3, headers);
    channelRead(headersFrame);
    ArgumentCaptor<Metadata> captor = ArgumentCaptor.forClass(Metadata.class);
    verify(streamListener).headersRead(captor.capture());
    assertEquals("value", captor.getValue().get(Metadata.Key.of("magic", Metadata.ASCII_STRING_MARSHALLER)));
    streamTransportState.requestMessagesFromDeframer(1);
    // Create a data frame and then trigger the handler to read it.
    ByteBuf frame = grpcDataFrame(3, false, contentAsArray());
    channelRead(frame);
    ArgumentCaptor<InputStream> isCaptor = ArgumentCaptor.forClass(InputStream.class);
    verify(streamListener).messageRead(isCaptor.capture());
    assertArrayEquals(ByteBufUtil.getBytes(content()), ByteStreams.toByteArray(isCaptor.getValue()));
    isCaptor.getValue().close();
}

Example 38 with Http2Headers

use of io.netty.handler.codec.http2.Http2Headers in project grpc-java by grpc.

the class NettyClientStreamTest method invalidInboundContentTypeShouldCancelStream.

@Test
public void invalidInboundContentTypeShouldCancelStream() {
    // Set stream id to indicate it has been created
    stream().transportState().setId(STREAM_ID);
    Http2Headers headers = new DefaultHttp2Headers().status(STATUS_OK).set(CONTENT_TYPE_HEADER, new AsciiString("application/bad", UTF_8));
    stream().transportState().transportHeadersReceived(headers, false);
    Http2Headers trailers = new DefaultHttp2Headers().set(new AsciiString("grpc-status", UTF_8), new AsciiString("0", UTF_8));
    stream().transportState().transportHeadersReceived(trailers, true);
    ArgumentCaptor<Status> captor = ArgumentCaptor.forClass(Status.class);
    ArgumentCaptor<Metadata> metadataCaptor = ArgumentCaptor.forClass(Metadata.class);
    verify(listener).closed(captor.capture(), metadataCaptor.capture());
    Status status = captor.getValue();
    assertEquals(Status.Code.UNKNOWN, status.getCode());
    assertTrue(status.getDescription().contains("content-type"));
    assertEquals("application/bad", metadataCaptor.getValue().get(Metadata.Key.of("Content-Type", Metadata.ASCII_STRING_MARSHALLER)));
}

Example 39 with Http2Headers

use of io.netty.handler.codec.http2.Http2Headers in project grpc-java by grpc.

the class NettyClientStreamTest method inboundHeadersShouldCallListenerHeadersRead.

@Test
public void inboundHeadersShouldCallListenerHeadersRead() throws Exception {
    stream().transportState().setId(STREAM_ID);
    Http2Headers headers = grpcResponseHeaders();
    stream().transportState().transportHeadersReceived(headers, false);
    verify(listener).headersRead(any(Metadata.class));
}

Example 40 with Http2Headers

use of io.netty.handler.codec.http2.Http2Headers in project grpc-java by grpc.

the class GrpcHttp2HeadersDecoderTest method decode_emptyHeaders.

@Test
public void decode_emptyHeaders() throws Http2Exception {
    Http2HeadersDecoder decoder = new GrpcHttp2ClientHeadersDecoder(8192);
    Http2HeadersEncoder encoder = new DefaultHttp2HeadersEncoder(NEVER_SENSITIVE);
    ByteBuf encodedHeaders = Unpooled.buffer();
    encoder.encodeHeaders(1, /* randomly chosen */
    new DefaultHttp2Headers(false), encodedHeaders);
    Http2Headers decodedHeaders = decoder.decodeHeaders(3, /* randomly chosen */
    encodedHeaders);
    assertEquals(0, decodedHeaders.size());
    assertThat(decodedHeaders.toString(), containsString("[]"));
}