private static boolean read(SelectionKey k) {
ScatteringByteChannel ch = (ScatteringByteChannel) k.channel();
NioSocketChannel channel = (NioSocketChannel) k.attachment();
ReceiveBufferSizePredictor predictor = channel.getConfig().getReceiveBufferSizePredictor();
ChannelBufferFactory bufferFactory = channel.getConfig().getBufferFactory();
ChannelBuffer buffer = bufferFactory.getBuffer(predictor.nextReceiveBufferSize());
int ret = 0;
int readBytes = 0;
boolean failure = true;
try {
while ((ret = buffer.writeBytes(ch, buffer.writableBytes())) > 0) {
readBytes += ret;
if (!buffer.writable()) {
break;
}
}
failure = false;
} catch (AsynchronousCloseException e) {
// Can happen, and does not need a user attention.
} catch (Throwable t) {
fireExceptionCaught(channel, t);
}
if (readBytes > 0) {
// Update the predictor.
predictor.previousReceiveBufferSize(readBytes);
// Fire the event.
fireMessageReceived(channel, buffer);
}
if (ret < 0 || failure) {
close(k);
return false;
}
return true;
}
