ZeroMQ 官方地址 ：http://api.zeromq.org/4-1:zmq_msg_get
zmq_msg_get(3) ØMQ Manual - ØMQ/3.2.5
Name
zmq_msg_get - 获取消息的性质
Synopsis
int zmq_msg_get (zmq_msg_t *message, int property);
Description
zmq_msg_get()函数会返回message参数指定的消息的属性值，属性由property参数指定。
以下的属性可以由zmq_msg_get() 函数获取。
ZMQ_MORE
这个参数指出在这个message之后是否还有更多的消息帧。
Return value
zmq_msg_get()函数如果执行成功则返回消息的属性值。否则函数返回 -1，并且设置errno为下列指定的值。
Errors
EINVAL
请求的属性未知。
Example
接收一个多帧的消息。
1 while (true)
2 {
3 // Create an empty ØMQ message to hold the message fram
4 int rc = zmq_msg_init (&frame);
5 assert (rc == 0);
6 // Block until a message is available to be received from socket
7 rc = zmq_recvmsg (socket, &frame, 0);
8 assert (rc != -1);
9 if (zmq_msg_get (&frame, ZMQ_MORE))
10 fprintf (stderr, "more
");
11 else
12 {
13 fprintf (stderr, "end
");
14 break;
15 }
16 zmq_msg_close (frame);
17 }
See also
zmq_msg_set(3) zmq_msg_init(3) zmq_msg_close(3) zmq(7)
Authors
This ØMQ manual page was written by Chuck Remes <cremes@mac.com> and Pieter Hintjens <ph@imatix.com>.
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Policy
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