zmq_msg_copy - copy content of a message to another message
int zmq_msg_copy (zmq_msg_t *dest, zmq_msg_t *src);
The zmq_msg_copy() function shall copy the message object referenced by src to the message object referenced by dest. The original content of dest, if any, shall be released.
|The implementation may choose not to physically copy the message content, rather to share the underlying buffer between src and dest. Avoid modifying message content after a message has been copied with zmq_msg_copy(), doing so can result in undefined behaviour. If what you need is an actual hard copy, allocate a new message using zmq_msg_init_size() and copy the message content using memcpy().|
|Never access zmq_msg_t members directly, instead always use the zmq_msg family of functions.|
The zmq_msg_copy() function shall return zero if successful. Otherwise it
-1 and set errno to one of the values defined below.
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