Examples of io.netty.channel.MessageEvent

io.netty.channel.MessageEvent
A {@link ChannelEvent} which represents the transmission or reception of amessage. It can mean the notification of a received message or the request for writing a message, depending on whether it is an upstream event or a downstream event respectively. Please refer to the {@link ChannelEvent}documentation to find out what an upstream event and a downstream event are and what fundamental differences they have.

            case INTEREST_OPS:
                OioDatagramWorker.setInterestOps(channel, future, ((Integer) value).intValue());
                break;
            }
        } else if (e instanceof MessageEvent) {
            MessageEvent evt = (MessageEvent) e;
            OioDatagramWorker.write(
                    channel, future, evt.getMessage(), evt.getRemoteAddress());
        }
    }

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            case INTEREST_OPS:
                channel.worker.setInterestOps(channel, future, ((Integer) value).intValue());
                break;
            }
        } else if (e instanceof MessageEvent) {
            MessageEvent event = (MessageEvent) e;
            NioSocketChannel channel = (NioSocketChannel) event.getChannel();
            boolean offered = channel.writeBufferQueue.offer(event);
            assert offered;
            channel.worker.writeFromUserCode(channel);
        }
    }

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            }


        } else if (e instanceof MessageEvent) {


            final MessageEvent event = (MessageEvent) e;
            if (event.getMessage() instanceof ChannelBuffer) {


                final ChannelBuffer buffer = (ChannelBuffer) event.getMessage();
                buffer.readBytes(outputStream, buffer.readableBytes());
                outputStream.flush();
                future.setSuccess();


            } else {

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    static class EchoCloseServerHandler implements ChannelUpstreamHandler, ChannelDownstreamHandler {
        @Override
        public void handleUpstream(ChannelHandlerContext ctx, ChannelEvent e)
                throws Exception {
            if (e instanceof MessageEvent) {
                final MessageEvent evt = (MessageEvent) e;
                String msg = (String) evt.getMessage();
                if (msg.equalsIgnoreCase("quit")) {
                    Channels.close(e.getChannel());
                    return;
                }
            }

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        }


        @Override
        public void handleDownstream(ChannelHandlerContext ctx, ChannelEvent e) {
            if (e instanceof MessageEvent) {
                final MessageEvent evt = (MessageEvent) e;
                String msg = (String) evt.getMessage();
                if (msg.equalsIgnoreCase("quit")) {
                    Channels.close(e.getChannel());
                    return;
                }
                System.err.println("SERVER:" + msg);

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            case INTEREST_OPS:
                channel.worker.setInterestOps(channel, future, (Integer) value);
                break;
            }
        } else if (e instanceof MessageEvent) {
            MessageEvent event = (MessageEvent) e;
            SctpChannelImpl channel = (SctpChannelImpl) event.getChannel();
            boolean offered = channel.writeBuffer.offer(event);
            assert offered;
            channel.worker.writeFromUserCode(channel);
        }
    }

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            return true;
        }


        @Override
        public MessageEvent poll() {
            MessageEvent e = queue.poll();
            if (e != null) {
                int messageSize = getMessageSize(e);
                int newWriteBufferSize = writeBufferSize.addAndGet(-messageSize);
                int lowWaterMark = getConfig().getWriteBufferLowWaterMark();

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        final Queue<MessageEvent> writeBuffer = channel.writeBuffer;
        final int writeSpinCount = channel.getConfig().getWriteSpinCount();
        synchronized (channel.writeLock) {
            channel.inWriteNowLoop = true;
            for (; ;) {
                MessageEvent evt = channel.currentWriteEvent;
                SendBuffer buf;
                if (evt == null) {
                    if ((channel.currentWriteEvent = evt = writeBuffer.poll()) == null) {
                        removeOpWrite = true;
                        channel.writeSuspended = false;
                        break;
                    }


                    channel.currentWriteBuffer = buf = sendBufferPool.acquire(evt.getMessage());
                } else {
                    buf = channel.currentWriteBuffer;
                }


                ChannelFuture future = evt.getFuture();
                try {
                    long localWrittenBytes = 0;
                    for (int i = writeSpinCount; i > 0; i--) {
                        localWrittenBytes = buf.transferTo(ch);
                        if (localWrittenBytes != 0) {

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        Exception cause = null;
        boolean fireExceptionCaught = false;


        // Clean up the stale messages in the write buffer.
        synchronized (channel.writeLock) {
            MessageEvent evt = channel.currentWriteEvent;
            if (evt != null) {
                // Create the exception only once to avoid the excessive overhead
                // caused by fillStackTrace.
                if (channel.isOpen()) {
                    cause = new NotYetConnectedException();
                } else {
                    cause = new ClosedChannelException();
                }


                ChannelFuture future = evt.getFuture();
                channel.currentWriteBuffer.release();
                channel.currentWriteBuffer = null;
                channel.currentWriteEvent = null;
                evt = null;
                future.setFailure(cause);
                fireExceptionCaught = true;
            }


            Queue<MessageEvent> writeBuffer = channel.writeBuffer;
            if (!writeBuffer.isEmpty()) {
                // Create the exception only once to avoid the excessive overhead
                // caused by fillStackTrace.
                if (cause == null) {
                    if (channel.isOpen()) {
                        cause = new NotYetConnectedException();
                    } else {
                        cause = new ClosedChannelException();
                    }
                }


                for (; ;) {
                    evt = writeBuffer.poll();
                    if (evt == null) {
                        break;
                    }
                    evt.getFuture().setFailure(cause);
                    fireExceptionCaught = true;
                }
            }
        }

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                    channel.worker.setInterestOps(channel, future, ((Integer) value).intValue());
                }
                break;
            }
        } else if (e instanceof MessageEvent) {
            MessageEvent event = (MessageEvent) e;
            SctpChannelImpl channel = (SctpChannelImpl) event.getChannel();
            boolean offered = channel.writeBuffer.offer(event);
            assert offered;
            channel.worker.writeFromUserCode(channel);
        }
    }

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io.netty.channel.iostream.IoStreamChannelSink

io.netty.channel.local.DefaultLocalChannel

io.netty.channel.local.LocalClientChannelSink

io.netty.channel.local.LocalServerChannelSink

io.netty.channel.rxtx.RxtxChannelSink

io.netty.channel.sctp.SctpChannelImpl$WriteRequestQueue

io.netty.channel.sctp.SctpClientPipelineSink

io.netty.channel.sctp.SctpServerPipelineSink

io.netty.channel.sctp.SctpWorker

io.netty.channel.socket.nio.AbstractNioChannel$WriteRequestQueue

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