libzmq/man/man3/zmq_msg_size.3

.TH zmq_msg_size 3 "" "(c)2007-2010 iMatix Corporation" "0MQ User Manuals"
.SH NAME
zmq_msg_size \- retrieves size of the message content
.SH SYNOPSIS
.B size_t zmq_msg_size (zmq_msg_t *msg);
.SH DESCRIPTION
Returns size of the message data. Always use this function to get the size,
never use
.IR zmq_msg_t
members directly.
.SH RETURN VALUE
Size of the message data (bytes).
.SH ERRORS
No errors are defined.
.SH EXAMPLE
.nf
zmq_msg_t msg;
rc = zmq_msg_init (&msg);
assert (rc == 0);
rc = zmq_recv (s, &msg, 0);
assert (rc == 0);
size_t msg_size = zmq_msg_size (&msg);
.fi
.SH SEE ALSO
.BR zmq_msg_init (3)
.BR zmq_msg_init_size (3)
.BR zmq_msg_init_data (3)
.BR zmq_msg_close (3)
.SH AUTHOR
Martin Sustrik <sustrik at 250bpm dot com>