Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
ZMQ_MSG_INIT(3)			  0MQ Manual		       ZMQ_MSG_INIT(3)

NAME
       zmq_msg_init - initialise empty 0MQ message

SYNOPSIS
       int zmq_msg_init	(zmq_msg_t *msg);

DESCRIPTION
       The zmq_msg_init() function shall initialise the	message	object
       referenced by msg to represent an empty message.	This function is most
       useful when called before receiving a message with zmq_msg_recv().

	   Caution
	   Never access	zmq_msg_t members directly, instead always use the
	   zmq_msg family of functions.

	   Caution
	   The functions zmq_msg_init(), zmq_msg_init_data() and
	   zmq_msg_init_size() are mutually exclusive. Never initialise	the
	   same	zmq_msg_t twice.

RETURN VALUE
       The zmq_msg_init() function always returns zero.

ERRORS
       No errors are defined.

EXAMPLE
       Receiving a message from	a socket.

	   zmq_msg_t msg;
	   rc =	zmq_msg_init (&msg);
	   assert (rc == 0);
	   int nbytes =	zmq_msg_recv (socket, &msg, 0);
	   assert (nbytes != -1);

SEE ALSO
       zmq_msg_init_size(3) zmq_msg_init_data(3) zmq_msg_close(3)
       zmq_msg_data(3) zmq_msg_size(3) zmq(7)

AUTHORS
       This page was written by	the 0MQ	community. To make a change please
       read the	0MQ Contribution Policy	at
       http://www.zeromq.org/docs:contributing.

0MQ 4.3.1			  01/12/2019		       ZMQ_MSG_INIT(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLE | SEE ALSO | AUTHORS

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=zmq_msg_init&sektion=3&manpath=FreeBSD+13.0-RELEASE+and+Ports>

home | help