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ZMQ_MSG_INIT

Section: 0MQ Manual (3)
Updated: 10/14/2014
Index Return to Main Contents
 

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_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 initialize the same zmq_msg_t twice.

 

RETURN VALUE

The zmq_msg_init() function shall return zero if successful. Otherwise it shall return -1 and set errno to one of the values defined below.  

ERRORS

No errors are defined.  

EXAMPLE

Receiving a message from a socket.

zmq_msg_t msg;
rc = zmq_msg_init (&msg);
assert (rc == 0);
rc = zmq_recv (socket, &msg, 0);
assert (rc == 0);

 

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 m[blue]http://www.zeromq.org/docs:contributingm[].


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
EXAMPLE
SEE ALSO
AUTHORS


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