Provided by: libzmq-dev_2.0.6beta.dfsg-2_i386
zmq_send - send a message on a socket
int zmq_send (void *socket, zmq_msg_t *msg, int flags);
The zmq_send() function shall queue the message referenced by the msg
argument to be sent to the socket referenced by the socket argument.
The flags argument is a combination of the flags defined below:
Specifies that the operation should be performed in non-blocking
mode. If the message cannot be queued on the underlying message
queue associated with socket, the zmq_send() function shall fail
with errno set to EAGAIN.
A successful invocation of zmq_send() does not indicate that the
message has been transmitted to the network, only that it has been
queued on the message queue associated with the socket and 0MQ has
assumed responsibility for the message.
The zmq_send() function shall return zero if successful. Otherwise it
shall return -1 and set errno to one of the values defined below.
Non-blocking mode was requested and the message cannot be queued at
The zmq_send() operation is not supported by this socket type.
The zmq_send() operation cannot be performed on this socket at the
moment due to the socket not being in the appropriate state. This
error may occur with socket types that switch between several
states, such as ZMQ_REP. See the messaging patterns section of
zmq_socket(3) for more information.
Example 1. Filling in a message and sending it to a socket
/* Create a new message, allocating 6 bytes for message content */
int rc = zmq_msg_init_size (&msg, 6);
assert (rc == 0);
/* Fill in message content with ´AAAAAA´ */
memset (zmq_msg_data (&msg), ´A´, 6);
/* Send the message to the socket */
rc = zmq_send (socket, &msg, 0);
assert (rc == 0);
zmq_recv(3) zmq_socket(7) zmq(7)
The 0MQ documentation was written by Martin Sustrik
<firstname.lastname@example.org> and Martin Lucina <email@example.com>.