ControlGraft = object
  topicID*: string

ControlIHave = object
  topicID*: string
  messageIDs*: seq[MessageID]

ControlIWant = object
  messageIDs*: seq[MessageID]

ControlMessage = object
  ihave*: seq[ControlIHave]
  iwant*: seq[ControlIWant]
  graft*: seq[ControlGraft]
  prune*: seq[ControlPrune]

ControlPrune = object
  topicID*: string
  peers*: seq[PeerInfoMsg]
  backoff*: uint64

Message = object
  fromPeer*: PeerId
  data*: seq[byte]
  seqno*: seq[byte]
  topicIDs*: seq[string]
  signature*: seq[byte]
  key*: seq[byte]

MessageID = seq[byte]

PeerInfoMsg = object
  peerId*: PeerId
  signedPeerRecord*: seq[byte]

RPCMsg = object
  subscriptions*: seq[SubOpts]
  messages*: seq[Message]
  control*: Option[ControlMessage]

SubOpts = object
  subscribe*: bool
  topic*: string

func shortLog(c: ControlMessage): auto {....raises: [Defect], tags: [].}

func shortLog(m: RPCMsg): auto {....raises: [Defect], tags: [].}

func shortLog(msg: Message): auto {....raises: [Defect], tags: [].}

func shortLog(s: ControlGraft): auto {....raises: [Defect], tags: [].}

func shortLog(s: ControlIHave): auto {....raises: [Defect], tags: [].}

func shortLog(s: ControlIWant): auto {....raises: [Defect], tags: [].}

func shortLog(s: ControlPrune): auto {....raises: [Defect], tags: [].}

func withSubs(T: type RPCMsg; topics: openArray[string]; subscribe: bool): T:type {.
    ...raises: [Defect].}