CompositeByteBuf content = (CompositeByteBuf) currentMessage.content();
if (content.readableBytes() > getMaxContentLength() - chunk.content().readableBytes()) {
tooLongFrameFound = true;
currentMessage.release();
this.currentMessage = null;
throw new TooLongFrameException("Memcache content length exceeded " + getMaxContentLength()
+ " bytes.");
}