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:cc.blynk.core.http.handlers.OTAHandler.java

License:Apache License

private Response singleUserOTA(ChannelHandlerContext ctx, UserKey userKey, String projectName,
        String pathToFirmware) {//w  ww  .  j a v a  2 s.  co m
    User initiator = ctx.channel().attr(AuthHeadersBaseHttpHandler.USER).get();
    User user = userDao.users.get(userKey);

    if (user == null) {
        log.info("Requested user {} not found.", userKey);
        return badRequest("Requested user not found.");
    }

    otaManager.initiate(initiator, userKey, projectName, pathToFirmware);

    return ok(pathToFirmware);
}

---

From source file:cc.blynk.core.http.handlers.OTAHandler.java

License:Apache License

private Response singleDeviceOTA(ChannelHandlerContext ctx, String token, String pathToFirmware) {
    TokenValue tokenValue = tokenManager.getTokenValueByToken(token);

    if (tokenValue == null) {
        log.debug("Requested token {} not found.", token);
        return badRequest("Invalid token.");
    }//from   w w  w .  j a v a 2s. c  om

    User user = tokenValue.user;
    int dashId = tokenValue.dash.id;
    int deviceId = tokenValue.device.id;

    Session session = sessionDao.userSession.get(new UserKey(user));
    if (session == null) {
        log.debug("No session for user {}.", user.email);
        return badRequest("Device wasn't connected yet.");
    }

    String body = OTAInfo.makeHardwareBody(otaManager.serverHostUrl, pathToFirmware);
    if (session.sendMessageToHardware(dashId, BLYNK_INTERNAL, 7777, body, deviceId)) {
        log.debug("No device in session.");
        return badRequest("No device in session.");
    }

    User initiator = ctx.channel().attr(AuthHeadersBaseHttpHandler.USER).get();
    if (initiator != null) {
        tokenValue.device.updateOTAInfo(initiator.email);
    }

    return ok(pathToFirmware);
}

---

From source file:cc.blynk.integration.model.websocket.AppWebSocketClientHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
    Channel ch = ctx.channel();
    if (!handshaker.isHandshakeComplete()) {
        handshaker.finishHandshake(ch, (FullHttpResponse) msg);
        log.trace("WebSocket Client connected!");
        if (handshakeFuture != null) {
            handshakeFuture.setSuccess();
        }/*from   w  ww .j  a  va2 s.  c  om*/
        return;
    }

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

    if (msg instanceof BinaryWebSocketFrame) {
        BinaryWebSocketFrame frame = (BinaryWebSocketFrame) msg;
        log.trace("WebSocket Client received message: " + frame.content());
        ctx.fireChannelRead(((WebSocketFrame) msg).retain());
    } else if (msg instanceof CloseWebSocketFrame) {
        log.trace("WebSocket Client received closing");
        ch.close();
    }
}

---

From source file:cc.blynk.integration.model.websocket.WebSocketClientHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
    Channel ch = ctx.channel();
    if (!handshaker.isHandshakeComplete()) {
        handshaker.finishHandshake(ch, (FullHttpResponse) msg);
        log.trace("WebSocket Client connected!");
        if (handshakeFuture != null) {
            handshakeFuture.setSuccess();
        }/*from   w ww. j av a 2 s .  c o m*/
        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 BinaryWebSocketFrame) {
        BinaryWebSocketFrame binaryFrame = (BinaryWebSocketFrame) frame;
        log.trace("WebSocket Client received message: " + binaryFrame.content());
        ctx.fireChannelRead(binaryFrame.retain().content());
    } else if (frame instanceof CloseWebSocketFrame) {
        log.trace("WebSocket Client received closing");
        ch.close();
    }
}

---

From source file:cc.io.lessons.server.HttpUploadServerHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {

    if (msg instanceof HttpRequest) {
        System.out.println(msg.toString());
    } else {/*  ww w  .  java  2  s .co m*/
        System.out.println(ByteBufUtil.hexDump(((HttpContent) msg).content()));
        //System.out.println(((HttpContent) msg).content().toString(Charset.defaultCharset()));
    }

    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);
            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) {
                writeResponse(ctx.channel());
                readingChunks = false;

                reset();
            }
        }
    }
}

---

From source file:cc.io.lessons.server.HttpUploadServerHandler.java

License:Apache License

private void writeMenu(ChannelHandlerContext ctx) {
    // print several HTML forms
    // Convert the response content to a ChannelBuffer.
    responseContent.setLength(0);//from   ww w.  ja va  2 s.  com

    // 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, buf.readableBytes());

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

---

From source file:ch.ethz.globis.distindex.middleware.net.MiddlewareChannelHandler.java

License:Open Source License

@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
    ByteBuf buf = (ByteBuf) msg;/*  ww  w  .  j a  v  a 2s.co m*/
    String clientHost = ctx.channel().remoteAddress().toString();
    ByteBuffer response = ioHandler.handle(clientHost, buf.nioBuffer());
    ByteBuf nettyBuf = Unpooled.wrappedBuffer(response);
    ByteBuf sizeBuf = Unpooled.copyInt(nettyBuf.readableBytes());

    ctx.write(sizeBuf);
    ctx.write(nettyBuf);
    ctx.flush();
    buf.release();
}

---

From source file:ch.ethz.globis.distindex.middleware.net.MiddlewareChannelHandler.java

License:Open Source License

@Override
public void channelInactive(ChannelHandlerContext ctx) throws Exception {
    String clientHost = ctx.channel().remoteAddress().toString();
    LOG.debug("Client " + clientHost + " disconnected.");
    ioHandler.cleanup(clientHost);// www.ja  va2  s .co m
    super.channelInactive(ctx);
}

---

From source file:ch.ethz.globis.distindex.middleware.net.MiddlewareChannelHandler.java

License:Open Source License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    String clientHost = ctx.channel().remoteAddress().toString();
    LOG.debug("Client " + clientHost + " disconnected.");
    ioHandler.cleanup(clientHost);/*from  ww w.  ja  v  a 2s  .  c o m*/
    super.exceptionCaught(ctx, cause);
}

---

From source file:chapter10.WebSocketServerHandler.java

License:Apache License

private void handleHttpRequest(ChannelHandlerContext ctx, FullHttpRequest req) throws Exception {

    // HTTP?HTTP//www .  ja va2  s  . c  om
    if (!req.decoderResult().isSuccess() || (!"websocket".equals(req.headers().get("Upgrade")))) {
        sendHttpResponse(ctx, req, new DefaultFullHttpResponse(HTTP_1_1, BAD_REQUEST));
        return;
    }

    // ??
    WebSocketServerHandshakerFactory wsFactory = new WebSocketServerHandshakerFactory(
            "ws://localhost:8080/websocket", null, false);
    handshaker = wsFactory.newHandshaker(req);
    if (handshaker == null) {
        WebSocketServerHandshakerFactory.sendUnsupportedVersionResponse(ctx.channel());
    } else {
        handshaker.handshake(ctx.channel(), req);
    }
}

---

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