java - ZMQ (Jeromq) - 套接字发送文档中缺少参数

Question

我目前正在尝试修改简单的 hwclient/hwserver 示例，以将具有预定义大小的字节数组发送到服务器。我已经看到基本上功能是按以下形式给出的:

public boolean send(byte[] data, int off, int length, int flags)

但是似乎没有关于参数int off的文档。谁能告诉我这个参数的作用吗？

提前致谢

Answer 1

如果您希望消耗完整的byte[]，如果您希望部分消耗提及该数组索引的偏移量，则它始终为 0。

/**
         * Queues a message created from data, so it can be sent.
         *
         * @param data   the data to send.
         * @param off    the index of the first byte to be sent.
         * @param length the number of bytes to be sent.
         * @param flags  a combination (with + or |) of the flags defined below:
         *               </ul>
         * @return true when it has been queued on the socket and ØMQ has assumed responsibility for the message.
         * This does not indicate that the message has been transmitted to the network.
         */
        public boolean send(byte[] data, int off, int length, int flags)