Examples with ChannelFutureListener io.netty.channel.ChannelFutureListener used on opensource projects

Example 51 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project grpc-java by grpc.

the class NettyServerHandler method closeStreamWhenDone.

private void closeStreamWhenDone(ChannelPromise promise, int streamId) throws Http2Exception {
    final NettyServerStream.TransportState stream = serverStream(requireHttp2Stream(streamId));
    promise.addListener(new ChannelFutureListener() {

        @Override
        public void operationComplete(ChannelFuture future) {
            stream.complete();
        }
    });
}

Example 52 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project grpc-java by grpc.

the class NettyServerTransport method start.

public void start(ServerTransportListener listener) {
    Preconditions.checkState(this.listener == null, "Handler already registered");
    this.listener = listener;
    // Create the Netty handler for the pipeline.
    final NettyServerHandler grpcHandler = createHandler(listener);
    HandlerSettings.setAutoWindow(grpcHandler);
    // Notify when the channel closes.
    channel.closeFuture().addListener(new ChannelFutureListener() {

        @Override
        public void operationComplete(ChannelFuture future) throws Exception {
            notifyTerminated(grpcHandler.connectionError());
        }
    });
    ChannelHandler negotiationHandler = protocolNegotiator.newHandler(grpcHandler);
    channel.pipeline().addLast(negotiationHandler);
}

Example 53 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project netty by netty.

the class SpdyFrameCodec method handlerAdded.

@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
    super.handlerAdded(ctx);
    this.ctx = ctx;
    ctx.channel().closeFuture().addListener(new ChannelFutureListener() {

        @Override
        public void operationComplete(ChannelFuture future) throws Exception {
            spdyHeaderBlockDecoder.end();
            spdyHeaderBlockEncoder.end();
        }
    });
}

Example 54 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project netty by netty.

the class WebSocketServerHandshaker method handshake.

/**
     * Performs the opening handshake
     *
     * When call this method you <strong>MUST NOT</strong> retain the {@link FullHttpRequest} which is passed in.
     *
     * @param channel
     *            Channel
     * @param req
     *            HTTP Request
     * @param responseHeaders
     *            Extra headers to add to the handshake response or {@code null} if no extra headers should be added
     * @param promise
     *            the {@link ChannelPromise} to be notified when the opening handshake is done
     * @return future
     *            the {@link ChannelFuture} which is notified when the opening handshake is done
     */
public final ChannelFuture handshake(Channel channel, FullHttpRequest req, HttpHeaders responseHeaders, final ChannelPromise promise) {
    if (logger.isDebugEnabled()) {
        logger.debug("{} WebSocket version {} server handshake", channel, version());
    }
    FullHttpResponse response = newHandshakeResponse(req, responseHeaders);
    ChannelPipeline p = channel.pipeline();
    if (p.get(HttpObjectAggregator.class) != null) {
        p.remove(HttpObjectAggregator.class);
    }
    if (p.get(HttpContentCompressor.class) != null) {
        p.remove(HttpContentCompressor.class);
    }
    ChannelHandlerContext ctx = p.context(HttpRequestDecoder.class);
    final String encoderName;
    if (ctx == null) {
        // this means the user use a HttpServerCodec
        ctx = p.context(HttpServerCodec.class);
        if (ctx == null) {
            promise.setFailure(new IllegalStateException("No HttpDecoder and no HttpServerCodec in the pipeline"));
            return promise;
        }
        p.addBefore(ctx.name(), "wsdecoder", newWebsocketDecoder());
        p.addBefore(ctx.name(), "wsencoder", newWebSocketEncoder());
        encoderName = ctx.name();
    } else {
        p.replace(ctx.name(), "wsdecoder", newWebsocketDecoder());
        encoderName = p.context(HttpResponseEncoder.class).name();
        p.addBefore(encoderName, "wsencoder", newWebSocketEncoder());
    }
    channel.writeAndFlush(response).addListener(new ChannelFutureListener() {

        @Override
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                ChannelPipeline p = future.channel().pipeline();
                p.remove(encoderName);
                promise.setSuccess();
            } else {
                promise.setFailure(future.cause());
            }
        }
    });
    return promise;
}

Example 55 with ChannelFutureListener

use of io.netty.channel.ChannelFutureListener in project netty by netty.

the class MessageAggregator method decode.

@Override
protected void decode(final ChannelHandlerContext ctx, I msg, List<Object> out) throws Exception {
    if (isStartMessage(msg)) {
        handlingOversizedMessage = false;
        if (currentMessage != null) {
            currentMessage.release();
            currentMessage = null;
            throw new MessageAggregationException();
        }
        @SuppressWarnings("unchecked") S m = (S) msg;
        // Send the continue response if necessary (e.g. 'Expect: 100-continue' header)
        // Check before content length. Failing an expectation may result in a different response being sent.
        Object continueResponse = newContinueResponse(m, maxContentLength, ctx.pipeline());
        if (continueResponse != null) {
            // Cache the write listener for reuse.
            ChannelFutureListener listener = continueResponseWriteListener;
            if (listener == null) {
                continueResponseWriteListener = listener = new ChannelFutureListener() {

                    @Override
                    public void operationComplete(ChannelFuture future) throws Exception {
                        if (!future.isSuccess()) {
                            ctx.fireExceptionCaught(future.cause());
                        }
                    }
                };
            }
            // Make sure to call this before writing, otherwise reference counts may be invalid.
            boolean closeAfterWrite = closeAfterContinueResponse(continueResponse);
            handlingOversizedMessage = ignoreContentAfterContinueResponse(continueResponse);
            final ChannelFuture future = ctx.writeAndFlush(continueResponse).addListener(listener);
            if (closeAfterWrite) {
                future.addListener(ChannelFutureListener.CLOSE);
                return;
            }
            if (handlingOversizedMessage) {
                return;
            }
        } else if (isContentLengthInvalid(m, maxContentLength)) {
            // if content length is set, preemptively close if it's too large
            invokeHandleOversizedMessage(ctx, m);
            return;
        }
        if (m instanceof DecoderResultProvider && !((DecoderResultProvider) m).decoderResult().isSuccess()) {
            O aggregated;
            if (m instanceof ByteBufHolder && ((ByteBufHolder) m).content().isReadable()) {
                aggregated = beginAggregation(m, ((ByteBufHolder) m).content().retain());
            } else {
                aggregated = beginAggregation(m, EMPTY_BUFFER);
            }
            finishAggregation(aggregated);
            out.add(aggregated);
            return;
        }
        // A streamed message - initialize the cumulative buffer, and wait for incoming chunks.
        CompositeByteBuf content = ctx.alloc().compositeBuffer(maxCumulationBufferComponents);
        if (m instanceof ByteBufHolder) {
            appendPartialContent(content, ((ByteBufHolder) m).content());
        }
        currentMessage = beginAggregation(m, content);
    } else if (isContentMessage(msg)) {
        if (currentMessage == null) {
            // until the begging of the next request/response.
            return;
        }
        // Merge the received chunk into the content of the current message.
        CompositeByteBuf content = (CompositeByteBuf) currentMessage.content();
        @SuppressWarnings("unchecked") final C m = (C) msg;
        // Handle oversized message.
        if (content.readableBytes() > maxContentLength - m.content().readableBytes()) {
            // By convention, full message type extends first message type.
            @SuppressWarnings("unchecked") S s = (S) currentMessage;
            invokeHandleOversizedMessage(ctx, s);
            return;
        }
        // Append the content of the chunk.
        appendPartialContent(content, m.content());
        // Give the subtypes a chance to merge additional information such as trailing headers.
        aggregate(currentMessage, m);
        final boolean last;
        if (m instanceof DecoderResultProvider) {
            DecoderResult decoderResult = ((DecoderResultProvider) m).decoderResult();
            if (!decoderResult.isSuccess()) {
                if (currentMessage instanceof DecoderResultProvider) {
                    ((DecoderResultProvider) currentMessage).setDecoderResult(DecoderResult.failure(decoderResult.cause()));
                }
                last = true;
            } else {
                last = isLastContentMessage(m);
            }
        } else {
            last = isLastContentMessage(m);
        }
        if (last) {
            finishAggregation(currentMessage);
            // All done
            out.add(currentMessage);
            currentMessage = null;
        }
    } else {
        throw new MessageAggregationException();
    }
}