ZeroMQ 官方地址 ：http://api.zeromq.org/4-2:zmq_msg_size
zmq_msg_size(3) ØMQ Manual - ØMQ/3.2.5
Name
zmq_msg_size - 以字节为单位返回消息内容的大小
Synopsis
size_t zmq_msg_size (zmq_msg_t *msg);
Description
zmq_msg_size()函数将会以字节为单位返回msg参数指定的消息中内容的大小。
永远不要直接对zmq_msg_t对象进行直接操作，而是要使用zmq_msg函数族进行操作。
Return value
函数zmq_msg_size()执行成功后，将会返回消息内容的大小。
Errors
没有定义错误代码
See also
zmq_msg_data(3) zmq_msg_init(3) zmq_msg_init_size(3) zmq_msg_init_data(3) zmq_msg_close(3)
zmq(7)
Authors
This ØMQ manual page was written by Martin Sustrik <sustrik@250bpm.com>, Martin Lucina <mato@kotelna.sk>, and Pieter Hintjens <ph@imatix.com>.
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