@Override
protected Object newContinueResponse(
HttpMessage start, int maxContentLength, ChannelPipeline pipeline) {
if (HttpUtil.is100ContinueExpected(start)) {
if (getContentLength(start, -1) <= maxContentLength) {
return CONTINUE.duplicate().retain();
}
pipeline.fireUserEventTriggered(HttpExpectationFailedEvent.INSTANCE);
return EXPECTATION_FAILED.duplicate().retain();
}
return null;
}
@Override
protected void handleOversizedMessage(final ChannelHandlerContext ctx, HttpMessage oversized)
throws Exception {
if (oversized instanceof HttpRequest) {
// send back a 413 and close the connection
ChannelFuture future =
ctx.writeAndFlush(TOO_LARGE.duplicate().retain())
.addListener(
new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
if (!future.isSuccess()) {
logger.debug(
"Failed to send a 413 Request Entity Too Large.", future.cause());
ctx.close();
}
}
});
// If the client started to send data already, close because it's impossible to recover.
// If keep-alive is off and 'Expect: 100-continue' is missing, no need to leave the connection
// open.
if (oversized instanceof FullHttpMessage
|| !HttpUtil.is100ContinueExpected(oversized) && !HttpUtil.isKeepAlive(oversized)) {
future.addListener(ChannelFutureListener.CLOSE);
}
// If an oversized request was handled properly and the connection is still alive
// (i.e. rejected 100-continue). the decoder should prepare to handle a new message.
HttpObjectDecoder decoder = ctx.pipeline().get(HttpObjectDecoder.class);
if (decoder != null) {
decoder.reset();
}
} else if (oversized instanceof HttpResponse) {
ctx.close();
throw new TooLongFrameException("Response entity too large: " + oversized);
} else {
throw new IllegalStateException();
}
}