Example usage for io.netty.channel ChannelHandlerContext channel

List of usage examples for io.netty.channel ChannelHandlerContext channel

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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:SecureChatServerHandler.java

License:Apache License

@Override
public void channelActive(final ChannelHandlerContext ctx) {
    // Once session is secured, send a greeting and register the channel to the global channel
    // list so the channel received the messages from others.
    ctx.pipeline().get(SslHandler.class).handshakeFuture()
            .addListener(new GenericFutureListener<Future<Channel>>() {
                @Override/*  w ww  .  j  a va  2  s .c  om*/
                public void operationComplete(Future<Channel> future) throws Exception {
                    ctx.writeAndFlush("Welcome to " + InetAddress.getLocalHost().getHostName()
                            + " secure chat service!\n");
                    ctx.writeAndFlush("Your session is protected by "
                            + ctx.pipeline().get(SslHandler.class).engine().getSession().getCipherSuite()
                            + " cipher suite.\n");

                    channels.add(ctx.channel());
                }
            });
}

From source file:SecureChatServerHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
    // Send the received message to all channels but the current one.
    for (Channel c : channels) {
        if (c != ctx.channel()) {
            c.writeAndFlush("[" + ctx.channel().remoteAddress() + "] " + msg + '\n');
        } else {//  www  .  j av a 2s .  c o  m
            c.writeAndFlush("[you] " + msg + '\n');
        }
    }

    // Close the connection if the client has sent 'bye'.
    if ("bye".equals(msg.toLowerCase())) {
        ctx.close();
    }
}

From source file:HttpUploadServerHandler.java

License:Apache License

@Override
public void messageReceived(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof HttpRequest) {
        HttpRequest request = this.request = (HttpRequest) msg;
        URI uri = new URI(request.getUri());
        if (!uri.getPath().startsWith("/form")) {
            // Write Menu
            writeMenu(ctx);/* ww w .  j  a v a  2s  . co m*/
            return;
        }
        responseContent.setLength(0);
        responseContent.append("WELCOME TO THE WILD WILD WEB SERVER\r\n");
        responseContent.append("===================================\r\n");

        responseContent.append("VERSION: " + request.getProtocolVersion().text() + "\r\n");

        responseContent.append("REQUEST_URI: " + request.getUri() + "\r\n\r\n");
        responseContent.append("\r\n\r\n");

        // new getMethod
        List<Entry<String, String>> headers = request.headers().entries();
        for (Entry<String, String> entry : headers) {
            responseContent.append("HEADER: " + entry.getKey() + '=' + entry.getValue() + "\r\n");
        }
        responseContent.append("\r\n\r\n");

        // new getMethod
        Set<Cookie> cookies;
        String value = request.headers().get(COOKIE);
        if (value == null) {
            cookies = Collections.emptySet();
        } else {
            cookies = CookieDecoder.decode(value);
        }
        for (Cookie cookie : cookies) {
            responseContent.append("COOKIE: " + cookie.toString() + "\r\n");
        }
        responseContent.append("\r\n\r\n");

        QueryStringDecoder decoderQuery = new QueryStringDecoder(request.getUri());
        Map<String, List<String>> uriAttributes = decoderQuery.parameters();
        for (Entry<String, List<String>> attr : uriAttributes.entrySet()) {
            for (String attrVal : attr.getValue()) {
                responseContent.append("URI: " + attr.getKey() + '=' + attrVal + "\r\n");
            }
        }
        responseContent.append("\r\n\r\n");

        // if GET Method: should not try to create a HttpPostRequestDecoder
        try {
            decoder = new HttpPostRequestDecoder(factory, request);
        } catch (ErrorDataDecoderException e1) {
            e1.printStackTrace();
            responseContent.append(e1.getMessage());
            writeResponse(ctx.channel());
            ctx.channel().close();
            return;
        } catch (IncompatibleDataDecoderException e1) {
            // GET Method: should not try to create a HttpPostRequestDecoder
            // So OK but stop here
            responseContent.append(e1.getMessage());
            responseContent.append("\r\n\r\nEND OF GET CONTENT\r\n");
            writeResponse(ctx.channel());
            return;
        }

        readingChunks = HttpHeaders.isTransferEncodingChunked(request);
        responseContent.append("Is Chunked: " + readingChunks + "\r\n");
        responseContent.append("IsMultipart: " + decoder.isMultipart() + "\r\n");
        if (readingChunks) {
            // Chunk version
            responseContent.append("Chunks: ");
            readingChunks = true;
        }
    }

    // check if the decoder was constructed before
    // if not it handles the form get
    if (decoder != null) {
        if (msg instanceof HttpContent) {
            // New chunk is received
            HttpContent chunk = (HttpContent) msg;
            try {
                decoder.offer(chunk);
            } catch (ErrorDataDecoderException e1) {
                e1.printStackTrace();
                responseContent.append(e1.getMessage());
                writeResponse(ctx.channel());
                ctx.channel().close();
                return;
            }
            responseContent.append('o');
            // example of reading chunk by chunk (minimize memory usage due to
            // Factory)
            readHttpDataChunkByChunk();
            // example of reading only if at the end
            if (chunk instanceof LastHttpContent) {
                readHttpDataAllReceive(ctx.channel());
                writeResponse(ctx.channel());
                readingChunks = false;

                reset();
            }
        }
    }
}

From source file:HttpUploadServerHandler.java

License:Apache License

private void writeMenu(ChannelHandlerContext ctx) {
    // print several HTML forms
    // Convert the response content to a ChannelBuffer.
    responseContent.setLength(0);/*  w  ww  .j  a va2  s .  c o  m*/

    // create Pseudo Menu
    responseContent.append("<html>");
    responseContent.append("<head>");
    responseContent.append("<title>Netty Test Form</title>\r\n");
    responseContent.append("</head>\r\n");
    responseContent.append("<body bgcolor=white><style>td{font-size: 12pt;}</style>");

    responseContent.append("<table border=\"0\">");
    responseContent.append("<tr>");
    responseContent.append("<td>");
    responseContent.append("<h1>Netty Test Form</h1>");
    responseContent.append("Choose one FORM");
    responseContent.append("</td>");
    responseContent.append("</tr>");
    responseContent.append("</table>\r\n");

    // GET
    responseContent.append("<CENTER>GET FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
    responseContent.append("<FORM ACTION=\"/formget\" METHOD=\"GET\">");
    responseContent.append("<input type=hidden name=getform value=\"GET\">");
    responseContent.append("<table border=\"0\">");
    responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
    responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
    responseContent
            .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
    responseContent.append("</td></tr>");
    responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
    responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
    responseContent.append("</table></FORM>\r\n");
    responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");

    // POST
    responseContent.append("<CENTER>POST FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
    responseContent.append("<FORM ACTION=\"/formpost\" METHOD=\"POST\">");
    responseContent.append("<input type=hidden name=getform value=\"POST\">");
    responseContent.append("<table border=\"0\">");
    responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
    responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
    responseContent
            .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
    responseContent.append("<tr><td>Fill with file (only file name will be transmitted): <br> "
            + "<input type=file name=\"myfile\">");
    responseContent.append("</td></tr>");
    responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
    responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
    responseContent.append("</table></FORM>\r\n");
    responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");

    // POST with enctype="multipart/form-data"
    responseContent.append("<CENTER>POST MULTIPART FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
    responseContent
            .append("<FORM ACTION=\"/formpostmultipart\" ENCTYPE=\"multipart/form-data\" METHOD=\"POST\">");
    responseContent.append("<input type=hidden name=getform value=\"POST\">");
    responseContent.append("<table border=\"0\">");
    responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
    responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
    responseContent
            .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
    responseContent.append("<tr><td>Fill with file: <br> <input type=file name=\"myfile\">");
    responseContent.append("</td></tr>");
    responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
    responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
    responseContent.append("</table></FORM>\r\n");
    responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");

    responseContent.append("</body>");
    responseContent.append("</html>");

    ByteBuf buf = copiedBuffer(responseContent.toString(), CharsetUtil.UTF_8);
    // Build the response object.
    FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);

    response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
    response.headers().set(CONTENT_LENGTH, String.valueOf(buf.readableBytes()));

    // Write the response.
    ctx.channel().write(response);
}

From source file:HttpUploadServerHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    logger.log(Level.WARNING, responseContent.toString(), cause);
    ctx.channel().close();
}

From source file:WebSocketFrameHandler.java

License:Open Source License

@Override
protected void channelRead0(ChannelHandlerContext ctx, WebSocketFrame frame) throws Exception {

    if (frame instanceof TextWebSocketFrame) {
        String inboundMessage = ((TextWebSocketFrame) frame).text();
        Timestamp currentTimestamp = new java.sql.Timestamp(Calendar.getInstance().getTime().getTime());

        //Message to be sent.
        String Echo = "Timestamp: " + currentTimestamp + " " + ctx.channel().toString() + "\n" + "Server tag: "
                + tag + "Server tag: " + tag + " -- Text: " + inboundMessage;

        System.out.println(Echo); //same message to server's out
        ctx.channel().writeAndFlush(new TextWebSocketFrame(Echo));

    } else {//from   w ww  .j  a  v  a2 s.c  o m
        String message = "Unsupported frame type: " + frame.getClass().getName();
        throw new UnsupportedOperationException(message);
    }

}

From source file:WorldClockClientHandler.java

License:Apache License

@Override
public void channelRegistered(ChannelHandlerContext ctx) throws Exception {
    channel = ctx.channel();
}

From source file:NettyServer.java

License:Open Source License

void start() throws Exception {
    parentGroup = new NioEventLoopGroup(1);
    childGroup = new NioEventLoopGroup();

    ServerBootstrap bootstrap = new ServerBootstrap().group(parentGroup, childGroup)
            .channel(NioServerSocketChannel.class).childHandler(new ChannelInitializer<SocketChannel>() {
                @Override/*w  w w  . ja va 2 s . c  o m*/
                protected void initChannel(SocketChannel channel) throws Exception {
                    ChannelPipeline pipeline = channel.pipeline();

                    pipeline.addLast("lineFrame", new LineBasedFrameDecoder(256));
                    pipeline.addLast("decoder", new StringDecoder());
                    pipeline.addLast("encoder", new StringEncoder());

                    pipeline.addLast("handler", new ChannelInboundHandlerAdapter() {
                        @Override
                        public void channelActive(ChannelHandlerContext ctx) throws Exception {
                            Channel channel = ctx.channel();
                            channelActiveHandler.accept(channel);
                        }

                        @Override
                        public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                            messageConsumer.accept(msg);
                        }
                    });
                }
            });
    channel = bootstrap.bind(port).channel();
    System.out.println("NettyServer started");
}

From source file:HttpUploadClientHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
    cause.printStackTrace();
    ctx.channel().close();
}

From source file:NettyInboundHttpTargetHandler.java

License:Apache License

@Override
public void channelRead(final ChannelHandlerContext ctx, Object msg) throws Exception {
    //   System.out.println("Receving data");
    inboundChannel.writeAndFlush(msg).addListener(new ChannelFutureListener() {
        @Override// w w w  .  ja  v a2 s . co m
        public void operationComplete(ChannelFuture future) throws Exception {
            if (future.isSuccess()) {
                ctx.channel().read();
            } else {
                future.channel().close();
            }
        }
    });
}