Example usage for io.netty.buffer Unpooled EMPTY_BUFFER

List of usage examples for io.netty.buffer Unpooled EMPTY_BUFFER

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Introduction

In this page you can find the example usage for io.netty.buffer Unpooled EMPTY_BUFFER.

Prototype

ByteBuf EMPTY_BUFFER

To view the source code for io.netty.buffer Unpooled EMPTY_BUFFER.

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Document

A buffer whose capacity is 0 .

Usage

From source file:com.sengled.cloud.mediaserver.rtsp.codec.RtspRequestDecoder.java

License:Apache License

@Override
protected HttpMessage createInvalidMessage() {
    return new DefaultFullHttpRequest(RtspVersions.RTSP_1_0, RtspMethods.OPTIONS, "/bad-request",
            Unpooled.EMPTY_BUFFER, validateHeaders);
}

From source file:com.sengled.cloud.mediaserver.rtsp.codec.RtspResponseDecoder.java

License:Apache License

@Override
protected HttpMessage createInvalidMessage() {
    return new DefaultFullHttpResponse(RtspVersions.RTSP_1_0, UNKNOWN_STATUS, Unpooled.EMPTY_BUFFER,
            validateHeaders);//from   w ww .  j a v  a 2s.  co  m
}

From source file:com.sohu.jafka.http.HttpServerHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
    if (msg instanceof HttpRequest) {
        HttpRequest request = this.request = (HttpRequest) msg;

        if (HttpHeaders.is100ContinueExpected(request)) {
            send100Continue(ctx);/*from  ww w  .  j  av a  2 s .  c  o m*/
        }
        body = new ByteArrayOutputStream(64);
        args = new HashMap<String, String>(4);
        //
        if (request.getMethod() != HttpMethod.POST) {
            sendStatusMessage(ctx, HttpResponseStatus.METHOD_NOT_ALLOWED, "POST METHOD REQUIRED");
            return;
        }
        HttpHeaders headers = request.headers();
        String contentType = headers.get("Content-Type");
        // ? text or octstream
        args.put("request_key", headers.get("request_key"));
        args.put("topic", headers.get("topic"));
        args.put("partition", headers.get("partition"));
    }

    if (msg instanceof HttpContent) {
        HttpContent httpContent = (HttpContent) msg;

        ByteBuf content = httpContent.content();
        if (content.isReadable()) {
            //body.write(content.array());
            content.readBytes(body, content.readableBytes());
            //body.append(content.toString(CharsetUtil.UTF_8));
        }

        if (msg instanceof LastHttpContent) {
            //process request
            if (server.handler != null) {
                server.handler.handle(args, body.toByteArray());
            }
            if (!writeResponse(ctx)) {
                // If keep-alive is off, close the connection once the content is fully written.
                ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
            }
            body = null;
            args = null;
        }
    }
}

From source file:com.springapp.mvc.netty.example.http.snoop.HttpSnoopServerHandler.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, Object msg) {
    if (msg instanceof HttpRequest) {
        HttpRequest request = this.request = (HttpRequest) msg;

        if (HttpHeaders.is100ContinueExpected(request)) {
            send100Continue(ctx);/*from ww w  . ja  va2s .c o  m*/
        }

        buf.setLength(0);
        buf.append("WELCOME TO THE WILD WILD WEB SERVER\r\n");
        buf.append("===================================\r\n");

        buf.append("VERSION: ").append(request.getProtocolVersion()).append("\r\n");
        buf.append("HOSTNAME: ").append(HttpHeaders.getHost(request, "unknown")).append("\r\n");
        buf.append("REQUEST_URI: ").append(request.getUri()).append("\r\n\r\n");

        HttpHeaders headers = request.headers();
        if (!headers.isEmpty()) {
            for (Entry<String, String> h : headers) {
                String key = h.getKey();
                String value = h.getValue();
                buf.append("HEADER: ").append(key).append(" = ").append(value).append("\r\n");
            }
            buf.append("\r\n");
        }

        QueryStringDecoder queryStringDecoder = new QueryStringDecoder(request.getUri());
        Map<String, List<String>> params = queryStringDecoder.parameters();
        if (!params.isEmpty()) {
            for (Entry<String, List<String>> p : params.entrySet()) {
                String key = p.getKey();
                List<String> vals = p.getValue();
                for (String val : vals) {
                    buf.append("PARAM: ").append(key).append(" = ").append(val).append("\r\n");
                }
            }
            buf.append("\r\n");
        }

        appendDecoderResult(buf, request);
    }

    if (msg instanceof HttpContent) {
        HttpContent httpContent = (HttpContent) msg;

        ByteBuf content = httpContent.content();
        if (content.isReadable()) {
            buf.append("CONTENT: ");
            buf.append(content.toString(CharsetUtil.UTF_8));
            buf.append("\r\n");
            appendDecoderResult(buf, request);
        }

        if (msg instanceof LastHttpContent) {
            buf.append("END OF CONTENT\r\n");

            LastHttpContent trailer = (LastHttpContent) msg;
            if (!trailer.trailingHeaders().isEmpty()) {
                buf.append("\r\n");
                for (String name : trailer.trailingHeaders().names()) {
                    for (String value : trailer.trailingHeaders().getAll(name)) {
                        buf.append("TRAILING HEADER: ");
                        buf.append(name).append(" = ").append(value).append("\r\n");
                    }
                }
                buf.append("\r\n");
            }

            if (!writeResponse(trailer, ctx)) {
                // If keep-alive is off, close the connection once the content is fully written.
                ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
            }
        }
    }
}

From source file:com.springapp.mvc.netty.example.proxy.HexDumpProxyBackendHandler.java

License:Apache License

@Override
public void channelActive(ChannelHandlerContext ctx) {
    ctx.read();
    ctx.write(Unpooled.EMPTY_BUFFER);
}

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 {/* w w  w  .j  a  v 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.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.tesora.dve.db.mysql.libmy.MyFieldPktResponse.java

License:Open Source License

protected void ensureNotCached() {
    if (state == CacheState.NOT_CACHED)
        return;/*from w  w w . ja v a 2  s. c om*/

    ensureAllFieldsAreReadable();//unpack any unread fields so we don't lose them.

    updateCache(Unpooled.EMPTY_BUFFER);
    state = CacheState.NOT_CACHED;
}

From source file:com.tesora.dve.db.mysql.portal.protocol.CachedAppendBuffer.java

License:Open Source License

public ByteBuf sliceWritableData() {
    int writtenLength = cachedSlab.writerIndex() - appendStartedAtIndex;

    if (writtenLength <= 0)
        return Unpooled.EMPTY_BUFFER;
    else {/*w w  w.j av  a  2s .co  m*/
        ByteBuf sliceSinceStarted = cachedSlab.slice(appendStartedAtIndex, writtenLength).retain(); //this will be written out to netty, so inc the ref count.
        return sliceSinceStarted;
    }
}