@startuml

class RpcBaseHeader {
  + RpcBaseHeader(uniqueClientQueueId: cxx::UniqueId&, lastKnownQueueIndex: uint32_t, sequenceId: uint64_t, rpcHeaderVersion: uint8_t)
  + getRpcHeaderVersion(): uint8_t
  + getSequenceId(): int64_t
  + getChunkHeader(): ChunkHeader*
  + getUserPayload(): void*
  # m_rpcHeaderVersion: uint8_t
  # m_lastKnownClientQueueIndex: uint32_t
  # m_uniqueClientQueueId: cxx::UniqueId
  # m_sequenceId: int64_t
}

class RequestHeader {
  + RequestHeader(uniqueClientQueueId: cxx::UniqueId&, lastKnownQueueIndex: uint32_t)
  + setSequenceId(sequenceId: int64_t): void
  {static} fromPayload(payload: void*): RequestHeader*
}

class ResponseHeader {
  + ResponseHeader(uniqueClientQueueId: cxx::UniqueId&, lastKnownQueueIndex: uint32_t, sequenceId: uint64_t)
  + setServerError(): void
  + hasServerError(): bool
  {static} fromPayload(payload: void*): RequestHeader*
  - m_hasServerError: bool
}

RequestHeader --> RpcBaseHeader
ResponseHeader --> RpcBaseHeader

@enduml