static void close(NioSocketChannel channel, ChannelFuture future) {
NioWorker worker = channel.worker;
boolean connected = channel.isConnected();
boolean bound = channel.isBound();
try {
channel.socket.close();
worker.cancelledKeys++;
if (channel.setClosed()) {
future.setSuccess();
if (connected) {
fireChannelDisconnected(channel);
}
if (bound) {
fireChannelUnbound(channel);
}
cleanUpWriteBuffer(channel);
fireChannelClosed(channel);
} else {
future.setSuccess();
}
} catch (Throwable t) {
future.setFailure(t);
fireExceptionCaught(channel, t);
}
}
