Function qpid_proton_sys::pn_message_properties

pub unsafe extern "C" fn pn_message_properties(
    msg: *mut pn_message_t
) -> *mut pn_data_t

Get and set the properties for a message. This operation returns a pointer to a pn_data_t representing the content of the properties section of a message. The pointer is valid until the message is freed and may be used to both access and modify the content of the properties section of a message. The pn_data_t must either be empty or consist of a string keyed map in order to be considered valid message properties.