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__