Example usage for io.netty.channel ChannelFutureListener CLOSE

Introduction

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

Prototype

ChannelFutureListener CLOSE

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Document

A ChannelFutureListener that closes the Channel which is associated with the specified ChannelFuture .

Usage

From source file:com.srotya.sidewinder.core.ingress.http.HTTPDataPointDecoder.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
    try {/*from  www .j  av a 2  s . c o m*/
        if (msg instanceof HttpRequest) {
            HttpRequest request = this.request = (HttpRequest) msg;
            if (HttpUtil.is100ContinueExpected(request)) {
                send100Continue(ctx);
            }

            QueryStringDecoder queryStringDecoder = new QueryStringDecoder(request.uri());
            path = queryStringDecoder.path();

            Map<String, List<String>> params = queryStringDecoder.parameters();
            if (!params.isEmpty()) {
                for (Entry<String, List<String>> p : params.entrySet()) {
                    String key = p.getKey();
                    if (key.equalsIgnoreCase("db")) {
                        dbName = p.getValue().get(0);
                    }
                }
            }

            if (path != null && path.contains("query")) {
                Gson gson = new Gson();
                JsonObject obj = new JsonObject();
                JsonArray ary = new JsonArray();
                ary.add(new JsonObject());
                obj.add("results", ary);
                responseString.append(gson.toJson(obj));
            }
        }

        if (msg instanceof HttpContent) {
            HttpContent httpContent = (HttpContent) msg;
            ByteBuf byteBuf = httpContent.content();
            if (byteBuf.isReadable()) {
                requestBuffer.append(byteBuf.toString(CharsetUtil.UTF_8));
            }

            if (msg instanceof LastHttpContent) {
                // LastHttpContent lastHttpContent = (LastHttpContent) msg;
                // if (!lastHttpContent.trailingHeaders().isEmpty()) {
                // }

                if (dbName == null) {
                    responseString.append("Invalid database null");
                    logger.severe("Invalid database null");
                } else {
                    String payload = requestBuffer.toString();
                    logger.fine("Request:" + payload);
                    List<DataPoint> dps = dataPointsFromString(dbName, payload);
                    for (DataPoint dp : dps) {
                        try {
                            engine.writeDataPoint(dp);
                            logger.fine("Accepted:" + dp + "\t" + new Date(dp.getTimestamp()));
                        } catch (IOException e) {
                            logger.fine("Dropped:" + dp + "\t" + e.getMessage());
                            responseString.append("Dropped:" + dp);
                        }
                    }
                }
                if (writeResponse(request, ctx)) {
                    ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:com.srotya.sidewinder.core.ingress.http.HTTPDataPointDecoder.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
}

---

From source file:com.stremebase.examples.todomvc.HttpRouter.java

License:Apache License

private static ChannelFuture flushResponse(ChannelHandlerContext ctx, HttpRequest req, HttpResponse res) {
    if (!HttpHeaders.isKeepAlive(req)) {
        return ctx.writeAndFlush(res).addListener(ChannelFutureListener.CLOSE);
    } else {// ww w.j  a  v a 2s.com
        res.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
        return ctx.writeAndFlush(res);
    }
}

---

From source file:com.study.hc.net.netty.http.HttpHelloWorldServerHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) {
    if (msg instanceof HttpRequest) {
        HttpRequest req = (HttpRequest) msg;

        boolean keepAlive = HttpUtil.isKeepAlive(req);
        FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, Unpooled.wrappedBuffer(CONTENT));
        response.headers().set(CONTENT_TYPE, "text/plain");
        response.headers().setInt(CONTENT_LENGTH, response.content().readableBytes());

        if (!keepAlive) {
            ctx.write(response).addListener(ChannelFutureListener.CLOSE);
        } else {//w  w  w.java2 s  .  co  m
            response.headers().set(CONNECTION, KEEP_ALIVE);
            ctx.write(response);
        }
    }
}

---

From source file:com.supermy.im.netty.handler.ImServerHandler.java

License:Apache License

@Override
public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
    // ctxWriteAndFlush() ???
    ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
}

---

From source file:com.tc.websocket.server.handler.RedirectionHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, FullHttpRequest req) throws Exception {
    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, FOUND);

    HttpHeaders headers = req.headers();

    IConfig cfg = Config.getInstance();//  w w  w  .  j a  v a  2  s .c o m

    StringBuilder sb = new StringBuilder();

    if (cfg.isEncrypted()) {
        sb.append(StringCache.HTTPS);
    } else {
        sb.append(StringCache.HTTP);
    }

    //finish up the url.
    sb.append(headers.get(HttpHeaderNames.HOST)).append(StringCache.COLON).append(cfg.getPort())
            .append(req.uri());

    //apply the redirect url
    response.headers().set(HttpHeaderNames.LOCATION, sb.toString());

    // Close the connection as soon as the redirect is sent.
    ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}

---

From source file:com.tc.websocket.server.handler.WebSocketValidationHandler.java

License:Apache License

/**
 * Send http response.//from  ww w  . ja v  a 2s . c o m
 *
 * @param ctx the ctx
 * @param req the req
 * @param res the res
 */
private static void sendHttpResponse(ChannelHandlerContext ctx, FullHttpRequest req, FullHttpResponse res) {
    // Generate an error page if response getStatus code is not OK (200).
    if (res.status().code() != 200) {
        ByteBuf buf = Unpooled.copiedBuffer(res.status().toString(), CharsetUtil.UTF_8);
        res.content().writeBytes(buf);
        buf.release();
        HttpUtil.setContentLength(res, res.content().readableBytes());
    }

    // Send the response and close the connection if necessary.
    ChannelFuture f = ctx.channel().writeAndFlush(res);
    if (!HttpUtil.isKeepAlive(req) || res.status().code() != 200) {
        f.addListener(ChannelFutureListener.CLOSE);
    }
}

---

From source file:com.tesora.dve.parlb.MysqlClientHandler.java

License:Open Source License

/**
 * Closes the specified channel after all queued write requests are flushed.
 *///from  w w  w.  j  a v a 2 s.  c  o m
static void closeOnFlush(Channel ch) {
    if (ch.isActive()) {
        ch.write(Unpooled.buffer()).addListener(ChannelFutureListener.CLOSE);
    }
}

---

From source file:com.tongtech.tis.fsc.file.HttpStaticFileServerHandler.java

License:Apache License

public void channelRead0(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
    URI requri = new URI(request.uri());
    System.out.println("uri download: " + requri.getPath());
    if (!request.decoderResult().isSuccess()) {
        sendError(ctx, BAD_REQUEST);/*w w w . j a va2 s  .  c  om*/
        return;
    }

    if (request.method() != GET) {
        sendError(ctx, METHOD_NOT_ALLOWED);
        return;
    }

    final String uri = request.uri();
    final String path = sanitizeUri(uri);
    if (path == null) {
        sendError(ctx, FORBIDDEN);
        return;
    }

    File file = new File(path);
    if (file.isHidden() || !file.exists()) {
        sendError(ctx, NOT_FOUND);
        return;
    }

    if (file.isDirectory()) {
        if (uri.endsWith("/")) {
            sendListing(ctx, file);
        } else {
            sendRedirect(ctx, uri + '/');
        }
        return;
    }

    if (!file.isFile()) {
        sendError(ctx, FORBIDDEN);
        return;
    }

    // Cache Validation
    String ifModifiedSince = request.headers().get(HttpHeaderNames.IF_MODIFIED_SINCE);
    if (ifModifiedSince != null && !ifModifiedSince.isEmpty()) {
        logger.info("file is modified.");
        SimpleDateFormat dateFormatter = new SimpleDateFormat(HTTP_DATE_FORMAT, Locale.US);
        Date ifModifiedSinceDate = dateFormatter.parse(ifModifiedSince);

        // Only compare up to the second because the datetime format we send to the client
        // does not have milliseconds
        long ifModifiedSinceDateSeconds = ifModifiedSinceDate.getTime() / 1000;
        long fileLastModifiedSeconds = file.lastModified() / 1000;
        if (ifModifiedSinceDateSeconds == fileLastModifiedSeconds) {
            sendNotModified(ctx);
            return;
        }
    }

    RandomAccessFile raf;
    try {
        raf = new RandomAccessFile(file, "r");
    } catch (FileNotFoundException ignore) {
        sendError(ctx, NOT_FOUND);
        return;
    }
    long fileLength = raf.length();

    HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
    HttpUtil.setContentLength(response, fileLength);
    setContentTypeHeader(response, file);
    setDateAndCacheHeaders(response, file);
    if (HttpUtil.isKeepAlive(request)) {
        response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
    }

    // Write the initial line and the header.
    ctx.write(response);

    // Write the content.
    ChannelFuture sendFileFuture;
    ChannelFuture lastContentFuture;
    if (ctx.pipeline().get(SslHandler.class) == null) {
        sendFileFuture = ctx.write(new DefaultFileRegion(raf.getChannel(), 0, fileLength),
                ctx.newProgressivePromise());
        // Write the end marker.
        lastContentFuture = ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);
    } else {
        sendFileFuture = ctx.writeAndFlush(new HttpChunkedInput(new ChunkedFile(raf, 0, fileLength, 8192)),
                ctx.newProgressivePromise());
        // HttpChunkedInput will write the end marker (LastHttpContent) for us.
        lastContentFuture = sendFileFuture;
    }

    sendFileFuture.addListener(new ChannelProgressiveFutureListener() {
        @Override
        public void operationProgressed(ChannelProgressiveFuture future, long progress, long total) {
            if (total < 0) { // total unknown
                System.err.println(future.channel() + " Transfer progress: " + progress);
            } else {
                System.err.println(future.channel() + " Transfer progress: " + progress + " / " + total);
            }
        }

        @Override
        public void operationComplete(ChannelProgressiveFuture future) {
            System.err.println(future.channel() + " Transfer complete.");
        }
    });

    // Decide whether to close the connection or not.
    if (!HttpUtil.isKeepAlive(request)) {
        // Close the connection when the whole content is written out.
        lastContentFuture.addListener(ChannelFutureListener.CLOSE);
    }
}

---

From source file:com.topsec.bdc.platform.api.server.http.HttpSnoopServerHandler.java

License:Apache License

/**
 * send back response and close the connection in server side.
 * //from   w  w w .j  a  v  a 2s .  c om
 * @param ctx
 * @param responseStatus
 * @param responseContent
 */
private void writeResponseAndClose(ChannelHandlerContext ctx, String message) {

    //response?????
    ByteBuf responseContentBuf = null;
    if (Assert.isEmptyString(message) == true) {
        responseContentBuf = Unpooled.copiedBuffer(_responseStatus.reasonPhrase(), CharsetUtil.UTF_8);
    } else {
        responseContentBuf = Unpooled.copiedBuffer(message, CharsetUtil.UTF_8);
    }
    // Decide whether to close the connection or not.
    // Build the response object.
    FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, _responseStatus, responseContentBuf);
    //???
    response.headers().set(CONTENT_TYPE, "text/plain; charset=UTF-8");
    //disallow keepAlive
    //boolean keepAlive = HttpHeaders.isKeepAlive(_request);
    //response.headers().set(CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
    // Add 'Content-Length' header only for a keep-alive connection.
    response.headers().set(CONTENT_LENGTH, response.content().readableBytes());
    // Add keep alive header as per:
    // - http://www.w3.org/Protocols/HTTP/1.1/draft-ietf-http-v11-spec-01.html#Connection
    //???
    response.headers().set(CONNECTION, HttpHeaders.Values.CLOSE);
    // Encode the cookie.
    String cookieString = _request.headers().get(COOKIE);
    if (cookieString != null) {
        Set<Cookie> cookies = ServerCookieDecoder.LAX.decode(cookieString);
        if (!cookies.isEmpty()) {
            // Reset the cookies if necessary.
            for (Cookie cookie : cookies) {
                response.headers().add(SET_COOKIE, ServerCookieEncoder.LAX.encode(cookie));
            }
        }
    } else {
        // Browser sent no cookie.  Add some.
        //response.headers().add(SET_COOKIE, ServerCookieEncoder.LAX.encode("key1", "value1"));
        //response.headers().add(SET_COOKIE, ServerCookieEncoder.LAX.encode("key2", "value2"));
    }
    try {
        // Write the response.
        ctx.write(response);
        // close connection
        ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
    } catch (Throwable t) {
        t.printStackTrace();
        ctx.close();
    }
}

---

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