secure_channel.h

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#ifndef __OPC_UA_MESSAGES_SECURE_CHANNEL_H__
#define __OPC_UA_MESSAGES_SECURE_CHANNEL_H__

#include <opc/ua/protocol/types.h>

namespace OpcUa
{
  // OpenSecureChannel
  // os << SecureHeader 
  //    << AssymmetricAlgoripthmHeader
  //    << SequenceHeader
  //    << NodeId << ExpandedNodeId // if present
  //    << RequestHeader
  //    << OpenSecureChannel

  struct OpenSecureChannelParameters
  {
    uint32_t ClientProtocolVersion;
    SecurityTokenRequestType RequestType;
    MessageSecurityMode SecurityMode;
    std::vector<uint8_t> ClientNonce;
    uint32_t RequestLifeTime;

    OpenSecureChannelParameters();
  };

  struct OpenSecureChannelRequest
  {
    ExpandedNodeId TypeId;
    RequestHeader Header;
    OpenSecureChannelParameters Parameters;

    OpenSecureChannelRequest();
  };

  
  // OpenSecureChannelResponse
  // is >> SecureHeader 
  //    >> AsymmetricAlgorithmHeader 
  //    >> SequenceHeader 
  //    >> ResponseHeader
  //    >> GetEndpointsResponse

  struct SecurityToken
  {
    uint32_t SecureChannelId;
    uint32_t TokenId;
    DateTime CreatedAt;
    int32_t RevisedLifetime;

    SecurityToken()
      : SecureChannelId(0)
      , TokenId(0)
      , CreatedAt(0)
      , RevisedLifetime(0)
    {
    }
  };

  struct OpenSecureChannelResponse
  {
    NodeId TypeId;
    ResponseHeader Header;

    uint32_t ServerProtocolVersion;
    SecurityToken ChannelSecurityToken;
    std::vector<uint8_t> ServerNonce;

    OpenSecureChannelResponse();
  };

  struct CloseSecureChannelRequest
  {
    NodeId TypeId;
    RequestHeader Header;

    CloseSecureChannelRequest();
  };

} // namespace OpcUa

#endif // __OPC_UA_MESSAGES_SECURE_CHANNEL_H__