private void encodeChunkedContent(
ChannelHandlerContext ctx, Object msg, int contentLength, List<Object> out) {
if (contentLength > 0) {
byte[] length = Integer.toHexString(contentLength).getBytes(CharsetUtil.US_ASCII);
ByteBuf buf = ctx.alloc().buffer(length.length + 2);
buf.writeBytes(length);
buf.writeBytes(CRLF);
out.add(buf);
out.add(encodeAndRetain(msg));
out.add(CRLF_BUF.duplicate());
}
if (msg instanceof LastHttpContent) {
HttpHeaders headers = ((LastHttpContent) msg).trailingHeaders();
if (headers.isEmpty()) {
out.add(ZERO_CRLF_CRLF_BUF.duplicate());
} else {
ByteBuf buf = ctx.alloc().buffer();
buf.writeBytes(ZERO_CRLF);
HttpHeaders.encode(headers, buf);
buf.writeBytes(CRLF);
out.add(buf);
}
state = ST_INIT;
} else {
if (contentLength == 0) {
// Need to produce some output otherwise an
// IllegalstateException will be thrown
out.add(EMPTY_BUFFER);
}
}
}
private void generateTraffic() {
// Flush the outbound buffer to the socket.
// Once flushed, generate the same amount of traffic again.
ctx.writeAndFlush(content.duplicate().retain()).addListener(trafficGenerator);
this.round++;
}
@Override
public byte[] allBytes() {
ByteBuf dup = buf.duplicate().resetReaderIndex();
byte[] res = new byte[dup.readableBytes()];
dup.readBytes(res);
return res;
}
@Override
public FullBinaryMemcacheResponse duplicate() {
ByteBuf extras = getExtras();
if (extras != null) {
extras = extras.duplicate();
}
return new DefaultFullBinaryMemcacheResponse(getKey(), extras, content().duplicate());
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof IdleStateEvent) {
ctx.writeAndFlush(HEARTBEAT_SEQUENCE.duplicate())
.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
} else {
super.userEventTriggered(ctx, evt);
}
}
@Override
public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
if (evt instanceof IdleStateEvent) {
IdleStateEvent event = (IdleStateEvent) evt;
if (event.state().equals(IdleState.READER_IDLE)) {
System.out.println("READER_IDLE");
NettyChannelMap.remove(ctx.channel());
ctx.writeAndFlush(HEARTBEAT_SEQUENCE.duplicate()).addListener(ChannelFutureListener.CLOSE);
} else if (event.state().equals(IdleState.WRITER_IDLE)) {
System.out.println("WRITER_IDLE");
} else if (event.state().equals(IdleState.ALL_IDLE)) {
System.out.println("ALL_IDLE");
NettyChannelMap.remove(ctx.channel());
ctx.writeAndFlush(HEARTBEAT_SEQUENCE.duplicate()).addListener(ChannelFutureListener.CLOSE);
}
} else {
super.userEventTriggered(ctx, evt);
}
}
@Override
public synchronized ByteBuf readContent(ByteBufAllocator alloc) throws IOException {
if (cachedContent == null) {
final ByteBuf newContent = e.readContent(alloc);
if (newContent.readableBytes() > maxCacheEntrySizeBytes) {
// Do not cache if the content is too large.
return newContent;
}
cachedContent = newContent;
}
return cachedContent.duplicate().retain();
}
private static void assertWriteFails(ChannelHandler handler, int count) {
final ByteBuf buffer = Unpooled.copiedBuffer("Test", CharsetUtil.US_ASCII);
final EmbeddedChannel channel = new EmbeddedChannel(handler);
ByteBuf[] buffers = new ByteBuf[count];
for (int i = 0; i < buffers.length; i++) {
buffers[i] = buffer.duplicate().retain();
}
try {
Assert.assertFalse(channel.writeOutbound(buffers));
Assert.fail();
} catch (Exception e) {
Assert.assertTrue(e instanceof TestException);
}
Assert.assertFalse(channel.finish());
channel.closeFuture().syncUninterruptibly();
buffer.release();
Assert.assertNull(channel.readOutbound());
}
private static void assertWrite(ChannelHandler handler, int count) {
final ByteBuf buffer = Unpooled.copiedBuffer("Test", CharsetUtil.US_ASCII);
final EmbeddedChannel channel = new EmbeddedChannel(handler);
channel.config().setWriteBufferLowWaterMark(1);
channel.config().setWriteBufferHighWaterMark(3);
ByteBuf[] buffers = new ByteBuf[count];
for (int i = 0; i < buffers.length; i++) {
buffers[i] = buffer.duplicate().retain();
}
Assert.assertTrue(channel.writeOutbound(buffers));
Assert.assertTrue(channel.finish());
channel.closeFuture().syncUninterruptibly();
for (int i = 0; i < buffers.length; i++) {
assertBuffer(channel, buffer);
}
buffer.release();
Assert.assertNull(channel.readOutbound());
}
@Override
public FileUpload duplicate() {
DiskFileUpload upload =
new DiskFileUpload(
getName(),
getFilename(),
getContentType(),
getContentTransferEncoding(),
getCharset(),
size);
ByteBuf buf = content();
if (buf != null) {
try {
upload.setContent(buf.duplicate());
} catch (IOException e) {
throw new ChannelException(e);
}
}
return upload;
}
@Test
public void testFramesDecoded() {
ByteBuf buf = Unpooled.buffer();
for (int i = 0; i < 9; i++) {
buf.writeByte(i);
}
ByteBuf input = buf.duplicate();
EmbeddedChannel channel = new EmbeddedChannel(new FrameChunkDecoder(3));
Assert.assertTrue(channel.writeInbound(input.readBytes(2)));
try {
channel.writeInbound(input.readBytes(4));
Assert.fail();
} catch (TooLongFrameException e) {
// expected
}
Assert.assertTrue(channel.writeInbound(input.readBytes(3)));
Assert.assertTrue(channel.finish());
Assert.assertEquals(buf.readBytes(2), channel.readInbound());
Assert.assertEquals(buf.skipBytes(4).readBytes(3), channel.readInbound());
}
@Override
public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
if (msg instanceof HttpRequest) {
HttpRequest req = (HttpRequest) msg;
if (is100ContinueExpected(req)) {
ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE));
}
boolean keepAlive = isKeepAlive(req);
ByteBuf content = RESPONSE_BYTES.duplicate();
FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
response.headers().set(CONTENT_TYPE, "text/html; charset=UTF-8");
response.headers().set(CONTENT_LENGTH, response.content().readableBytes());
if (!keepAlive) {
ctx.write(response).addListener(ChannelFutureListener.CLOSE);
} else {
response.headers().set(CONNECTION, Values.KEEP_ALIVE);
ctx.write(response);
}
}
}
@Override
protected void decode(ChannelHandlerContext ctx, HttpObject msg, MessageBuf<Object> out)
throws Exception {
FullHttpMessage currentMessage = this.currentMessage;
if (msg instanceof HttpMessage) {
assert currentMessage == null;
HttpMessage m = (HttpMessage) msg;
// Handle the 'Expect: 100-continue' header if necessary.
// TODO: Respond with 413 Request Entity Too Large
// and discard the traffic or close the connection.
// No need to notify the upstream handlers - just log.
// If decoding a response, just throw an exception.
if (is100ContinueExpected(m)) {
ctx.write(CONTINUE.duplicate());
}
if (!m.getDecoderResult().isSuccess()) {
removeTransferEncodingChunked(m);
this.currentMessage = null;
out.add(BufUtil.retain(m));
return;
}
if (msg instanceof HttpRequest) {
HttpRequest header = (HttpRequest) msg;
this.currentMessage =
currentMessage =
new DefaultFullHttpRequest(
header.getProtocolVersion(),
header.getMethod(),
header.getUri(),
Unpooled.compositeBuffer(maxCumulationBufferComponents));
} else if (msg instanceof HttpResponse) {
HttpResponse header = (HttpResponse) msg;
this.currentMessage =
currentMessage =
new DefaultFullHttpResponse(
header.getProtocolVersion(),
header.getStatus(),
Unpooled.compositeBuffer(maxCumulationBufferComponents));
} else {
throw new Error();
}
currentMessage.headers().set(m.headers());
// A streamed message - initialize the cumulative buffer, and wait for incoming chunks.
removeTransferEncodingChunked(currentMessage);
} else if (msg instanceof HttpContent) {
assert currentMessage != null;
// Merge the received chunk into the content of the current message.
HttpContent chunk = (HttpContent) msg;
CompositeByteBuf content = (CompositeByteBuf) currentMessage.content();
if (content.readableBytes() > maxContentLength - chunk.content().readableBytes()) {
// TODO: Respond with 413 Request Entity Too Large
// and discard the traffic or close the connection.
// No need to notify the upstream handlers - just log.
// If decoding a response, just throw an exception.
throw new TooLongFrameException(
"HTTP content length exceeded " + maxContentLength + " bytes.");
}
// Append the content of the chunk
if (chunk.content().isReadable()) {
chunk.retain();
content.addComponent(chunk.content());
content.writerIndex(content.writerIndex() + chunk.content().readableBytes());
}
final boolean last;
if (!chunk.getDecoderResult().isSuccess()) {
currentMessage.setDecoderResult(DecoderResult.failure(chunk.getDecoderResult().cause()));
last = true;
} else {
last = chunk instanceof LastHttpContent;
}
if (last) {
this.currentMessage = null;
// Merge trailing headers into the message.
if (chunk instanceof LastHttpContent) {
LastHttpContent trailer = (LastHttpContent) chunk;
currentMessage.headers().add(trailer.trailingHeaders());
}
// Set the 'Content-Length' header.
currentMessage
.headers()
.set(HttpHeaders.Names.CONTENT_LENGTH, String.valueOf(content.readableBytes()));
// All done
out.add(currentMessage);
}
} else {
throw new Error();
}
}
@Override
public ByteBuf duplicate() {
return buf.duplicate();
}
/**
* Returns the Buffer as a Netty {@code ByteBuf}.
*
* <p>This method is meant for internal use only.
*/
public ByteBuf getByteBuf() {
// Return a duplicate so the Buffer can be written multiple times.
// See #648
return buffer.duplicate();
}
@Override
public InputStream openStream() throws IOException {
return new ByteBufInputStream(buf.duplicate());
}