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Scope: Core (OPC-10000-*) All specs

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OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

7.1.2.2 Message Header

MessageType is one of the values supported by the OPC UA Connection Protocol. MessageSize UInt32 The length of the Message , in bytes. This value includes the 8 bytes ... Connection Protocol layer shall verify the MessageType and make sure the MessageSize is less than the negotiated ReceiveBufferSize before passing any Message onto the SecureChannel layer