@Override
protected void channelRead(
final C connection,
final ContextImpl context,
final ChannelHandlerContext chctx,
final Object msg)
throws Exception {
if (msg instanceof HttpObject) {
DecoderResult result = ((HttpObject) msg).getDecoderResult();
if (result.isFailure()) {
chctx.pipeline().fireExceptionCaught(result.cause());
return;
}
}
if (connection != null) {
// we are reading from the channel
// We need to do this since it's possible the server is being used from a worker context
context.execute(() -> doMessageReceived(connection, chctx, msg), true);
} else {
// We execute this directly as we don't have a context yet, the context will have to be set
// manually
// inside doMessageReceived();
try {
doMessageReceived(null, chctx, msg);
} catch (Throwable t) {
chctx.pipeline().fireExceptionCaught(t);
}
}
}
@Override
public void channelRead0(
ChannelHandlerContext channelHandlerContext, FullHttpRequest fullHttpRequest)
throws Exception {
DecoderResult decoderResult = fullHttpRequest.decoderResult();
if (!decoderResult.isSuccess()) {
_sendError(channelHandlerContext, BAD_REQUEST);
return;
}
if (fullHttpRequest.method() == GET) {
processGetRequest(channelHandlerContext, fullHttpRequest);
} else if (fullHttpRequest.method() == HEAD) {
processHeadRequest(channelHandlerContext, fullHttpRequest);
} else {
_sendError(channelHandlerContext, BAD_REQUEST);
}
}
@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();
}
}