Zmq.MsgInitialize a new message with the given data. The data will be kept alive for the lifetime of the message.
val size : t -> intSize of the message in bytes
Retrieve the data contained in the message.
This is considered unsafe because the underlying data may be freed when the message's lifetime expires.
val close : t -> unitFree the message. This will be done automatically when the message is garbage collected.
val gets : t -> string -> stringRetrieve a property attached to a message. Property are simple strings. Example of properties include: "Socket-Type", "Identity", "Resource", but underlying transport and security mechanism may add more.