Example usage for io.netty.channel ChannelHandlerContext channel

Introduction

In this page you can find the example usage for io.netty.channel ChannelHandlerContext channel.

Prototype

Channel channel();

Source Link

Document

Return the Channel which is bound to the ChannelHandlerContext .

Usage

From source file:com.eucalyptus.ws.IoHandlers.java

License:Open Source License

public static Map<String, ChannelHandler> channelMonitors(final TimeUnit unit, final long timeout) {
    final Map<String, ChannelHandler> monitors = Maps.newHashMap();
    monitors.put("idlehandler", new IdleStateHandler(0L, 0L, timeout, unit));
    monitors.put("idlecloser", new ChannelInboundHandlerAdapter() {
        @Override//w  ww.  j av  a  2 s. c  o m
        public void userEventTriggered(final ChannelHandlerContext ctx, final Object evt) throws Exception {
            if (evt instanceof IdleStateEvent) {
                IdleStateEvent e = (IdleStateEvent) evt;
                if (e.state() == IdleState.ALL_IDLE) {
                    ctx.channel().close();
                }
            }
        }
    });
    monitors.putAll(extraMonitors);
    return monitors;
}

From source file:com.example.iimp_znxj_new2014.netty.ServerHandler.java

License:Apache License

private void loginResult(ChannelHandlerContext ctx, String msg) throws IOException {

    System.err.println("?client?" + msg);

    UserInfo userInfo = JsonUtils.decode(msg, UserInfo.class);

    msg = "??:" + userInfo.getUsername() + "    ?:" + userInfo.getPassword() + "----"
            + ctx.channel().remoteAddress() + "----" + msg;
    Log.d("tag", msg);
    System.out.println(ctx.channel().id());
    ctx.writeAndFlush("1\n");
    //ctx.writeAndFlush("[" + ctx.channel().remoteAddress() + "] " + msg + '\n');

}

From source file:com.facebook.nifty.core.NettyThriftDecoder.java

License:Apache License

@Override
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
    out.add(getTransport(ctx.channel(), in));
}

From source file:com.facebook.nifty.core.NiftyDispatcher.java

License:Apache License

private void writeResponse(ChannelHandlerContext ctx, TNiftyTransport messageTransport,
        int responseSequenceId) {
    // Ensure responses to requests are written in the same order the requests
    // were received.
    synchronized (responseMap) {
        ByteBuf response = messageTransport.getOutputBuffer();
        ThriftTransportType transportType = messageTransport.getTransportType();
        int currentResponseId = lastResponseWrittenId.get() + 1;
        if (responseSequenceId != currentResponseId) {
            // This response is NOT next in line of ordered responses, save it to
            // be sent later, after responses to all earlier requests have been
            // sent.
            responseMap.put(responseSequenceId, response);
        } else {//from w  w  w.  java 2  s.c om
            // This response was next in line, write this response now, and see if
            // there are others next in line that should be sent now as well.
            do {
                if (response.isReadable()) {
                    response = addFraming(ctx, response, transportType);
                    //ctx.nextOutboundByteBuffer().writeBytes(response);
                    ctx.channel().write(response);
                    //response.release();
                }
                lastResponseWrittenId.incrementAndGet();
                ++currentResponseId;
                response = responseMap.remove(currentResponseId);
            } while (null != response);

            ctx.channel().flush();

            // Now that we've written some responses, check if reads should be unblocked
            if (isChannelReadBlocked(ctx)) {
                int lastRequestSequenceId = dispatcherSequenceId.get();
                if (lastRequestSequenceId <= lastResponseWrittenId.get() + queuedResponseLimit) {
                    unblockChannelReads(ctx);
                }
            }
        }
    }
}

From source file:com.facebook.nifty.core.NiftyDispatcher.java

License:Apache License

private void closeChannel(ChannelHandlerContext ctx) {
    if (ctx.channel().isOpen()) {
        ctx.channel().close();
    }
}

From source file:com.facebook.nifty.core.NiftyDispatcher.java

License:Apache License

private void blockChannelReads(ChannelHandlerContext ctx) {
    // Remember that reads are blocked (there is no Channel.getReadable())
    ctx.attr(READ_BLOCKED_STATE_KEY).set(ReadBlockedState.BLOCKED);

    // NOTE: this shuts down reads, but isn't a 100% guarantee we won't get any more messages.
    // It sets up the channel so that the polling loop will not report any new read events
    // and netty won't read any more data from the socket, but any messages already fully read
    // from the socket before this ran may still be decoded and arrive at this handler. Thus
    // the limit on queued messages before we block reads is more of a guidance than a hard
    // limit./*  w w w.  j av  a 2  s  .  c o  m*/
    ctx.channel().config().setAutoRead(false);
}

From source file:com.facebook.nifty.core.NiftyDispatcher.java

License:Apache License

private void unblockChannelReads(ChannelHandlerContext ctx) {
    // Remember that reads are unblocked (there is no Channel.getReadable())
    ctx.attr(READ_BLOCKED_STATE_KEY).set(ReadBlockedState.NOT_BLOCKED);
    ctx.channel().config().setAutoRead(true);
}

From source file:com.facebook.nifty.core.ThriftFrameDecoder.java

License:Apache License

private TTransport tryDecodeFramedMessage(ChannelHandlerContext ctx, ByteBuf buffer) {
    // Framed messages are prefixed by the size of the frame (which doesn't include the
    // framing itself).

    int messageStartReaderIndex = buffer.readerIndex();
    // Read the i32 frame contents size
    int messageContentsLength = buffer.getInt(messageStartReaderIndex);
    // The full message is larger by the size of the frame size prefix
    int messageLength = messageContentsLength + MESSAGE_FRAME_SIZE;

    if (messageContentsLength > maxFrameSize) {
        ctx.fireExceptionCaught(//from   w ww.  j  av a 2 s . c o  m
                new TooLongFrameException("Maximum frame size of " + maxFrameSize + " exceeded"));
    }

    int messageContentsOffset = messageStartReaderIndex + MESSAGE_FRAME_SIZE;
    if (messageLength == 0) {
        // Zero-sized frame: just ignore it and return nothing
        buffer.readerIndex(messageContentsOffset);
        return null;
    } else if (buffer.readableBytes() < messageLength) {
        // Full message isn't available yet, return nothing for now
        return null;
    } else {
        // Full message is available, return it
        ByteBuf messageBuffer = extractFrame(buffer, messageContentsOffset, messageContentsLength);
        ThriftMessage message = new ThriftMessage(messageBuffer, ThriftTransportType.FRAMED);
        buffer.readerIndex(messageStartReaderIndex + messageLength);
        return new TNiftyTransport(ctx.channel(), message);
    }
}

From source file:com.facebook.nifty.core.ThriftFrameDecoder.java

License:Apache License

private TTransport tryDecodeUnframedMessage(ChannelHandlerContext ctx, ByteBuf buffer) throws TException {
    // Perform a trial decode, skipping through
    // the fields, to see whether we have an entire message available.

    int messageLength = 0;
    int messageStartReaderIndex = buffer.readerIndex();

    try {//  www.j ava 2s .c  o  m
        TNiftyTransport decodeAttemptTransport = new TNiftyTransport(ctx.channel(), buffer);
        TProtocol inputProtocol = this.inputProtocolFactory.getProtocol(decodeAttemptTransport);

        // Skip through the message
        inputProtocol.readMessageBegin();
        TProtocolUtil.skip(inputProtocol, TType.STRUCT);
        inputProtocol.readMessageEnd();

        messageLength = buffer.readerIndex() - messageStartReaderIndex;
    } catch (IndexOutOfBoundsException e) {
        // No complete message was decoded: ran out of bytes
        return null;
    } finally {
        if (buffer.readerIndex() - messageStartReaderIndex > maxFrameSize) {
            ctx.fireExceptionCaught(
                    new TooLongFrameException("Maximum frame size of " + maxFrameSize + " exceeded"));
        }

        buffer.readerIndex(messageStartReaderIndex);
    }

    if (messageLength <= 0) {
        return null;
    }

    // We have a full message in the read buffer, slice it off
    ByteBuf messageBuffer = extractFrame(buffer, messageStartReaderIndex, messageLength);
    ThriftMessage message = new ThriftMessage(messageBuffer, ThriftTransportType.UNFRAMED);
    buffer.readerIndex(messageStartReaderIndex + messageLength);
    return new TNiftyTransport(ctx.channel(), message);
}

From source file:com.fanavard.challenge.client.websocket.WebSocketClientHandler.java

License:Apache License

@Override
public void messageReceived(ChannelHandlerContext ctx, Object msg) {
    Channel ch = ctx.channel();
    if (!handshaker.isHandshakeComplete()) {
        handshaker.finishHandshake(ch, (FullHttpResponse) msg);
        System.out.println("WebSocket Client connected!");
        handshakeFuture.setSuccess();//ww  w  .j  av a2s  .c  om
        return;
    }

    if (msg instanceof FullHttpResponse) {
        FullHttpResponse response = (FullHttpResponse) msg;
        throw new IllegalStateException("Unexpected FullHttpResponse (getStatus=" + response.status()
                + ", content=" + response.content().toString(CharsetUtil.UTF_8) + ')');
    }

    WebSocketFrame frame = (WebSocketFrame) msg;
    if (frame instanceof TextWebSocketFrame) {
        TextWebSocketFrame textFrame = (TextWebSocketFrame) frame;
        System.out.println("WebSocket Client received message: " + textFrame.text());
    } else if (frame instanceof PongWebSocketFrame) {
        System.out.println("WebSocket Client received pong");
    } else if (frame instanceof CloseWebSocketFrame) {
        System.out.println("WebSocket Client received closing");
        ch.close();
    }
}