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zmq_msg_copy - copy content of a message to another message
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*int zmq_msg_copy (zmq_msg_t '*dest', zmq_msg_t '*src');*
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The _zmq_msg_copy()_ function shall copy the message object referenced by 'src'
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to the message object referenced by 'dest'. The original content of 'dest', if
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any, shall be released.
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CAUTION: The implementation may choose not to physically copy the message
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content, rather to share the underlying buffer between 'src' and 'dest'. Avoid
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modifying message content after a message has been copied with
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_zmq_msg_copy()_, doing so can result in undefined behaviour. If what you need
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is an actual hard copy, allocate a new message using _zmq_msg_init_size()_ and
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copy the message content using _memcpy()_.
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CAUTION: Never access 'zmq_msg_t' members directly, instead always use the
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_zmq_msg_ family of functions.
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The _zmq_msg_copy()_ function shall return zero if successful. Otherwise it
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shall return `-1` and set 'errno' to one of the values defined below.
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linkzmq:zmq_msg_move[3]
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linkzmq:zmq_msg_init[3]
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linkzmq:zmq_msg_init_size[3]
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linkzmq:zmq_msg_init_data[3]
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linkzmq:zmq_msg_close[3]
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The 0MQ documentation was written by Martin Sustrik <sustrik@250bpm.com> and
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Martin Lucina <martin@lucina.net>.
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doc/zmq_msg_copy.txt
