zmq_msg_set(3) Manual Page

int zmq_msg_set (zmq_msg_t *message, int property, int value);

The zmq_msg_set() function shall set the property specified by the property argument to the value of the value argument for the ØMQ message fragment pointed to by the message argument.

Currently the zmq_msg_set() function does not support any property names.

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

zmq_msg_get(3) zmq(7)

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