Provided by: libzmq-dev_2.0.6beta.dfsg-2_i386 bug

NAME

       zmq_recv - receive a message from a socket

SYNOPSIS

       int zmq_recv (void *socket, zmq_msg_t *msg, int flags);

DESCRIPTION

       The zmq_recv() function shall dequeue a message from the underlying
       message queue associated with the socket referenced by the socket
       argument and store it in the message referenced by the msg argument.
       Any content previously stored in msg shall be properly deallocated. If
       there are no messages available to be dequeued from the underlying
       message queue associated with socket the zmq_recv() function shall
       block until the request can be satisfied. The flags argument is a
       combination of the flags defined below:

       ZMQ_NOBLOCK
           Specifies that the operation should be performed in non-blocking
           mode. If there are no messages available to be dequeued from the
           underlying message queue associated with socket, the zmq_recv()
           function shall fail with errno set to EAGAIN.

RETURN VALUE

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

ERRORS

       EAGAIN
           Non-blocking mode was requested and no messages are available at
           the moment.

       ENOTSUP
           The zmq_recv() operation is not supported by this socket type.

       EFSM
           The zmq_recv() 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

       Example 1. Receiving a message from a socket

           /* Create an empty 0MQ message */
           zmq_msg_t msg;
           int rc = zmq_msg_init (&msg);
           assert (rc == 0);
           /* Block until a message is available to be dequeued from socket */
           rc = zmq_recv (socket, &msg, 0);
           assert (rc == 0);

SEE ALSO

       zmq_send(3) zmq_socket(7) zmq(7)

AUTHORS

       The 0MQ documentation was written by Martin Sustrik
       <sustrik@250bpm.com[1]> and Martin Lucina <mato@kotelna.sk[2]>.

NOTES

        1. sustrik@250bpm.com
           mailto:sustrik@250bpm.com

        2. mato@kotelna.sk
           mailto:mato@kotelna.sk