private static SocketChannel newSocket() {
        try {
            return SocketChannel.open();
        } catch (IOException e) {
            throw new NioException("can't create a new socket, out of file descriptors ?", e);
        }
    }
@author Robert HG (254963746@qq.com) on 2/2/16.
lts-core/src/main/java/com/github/ltsopensource/nio/processor/NioClientProcessor.java