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2.1 KiB

Tendermint Socket Protocol (TMSP)

TMSP is a socket protocol enabling a consensus engine, running in one process, to manage an application state, running in another. Thus the applications can be written in any programming language.

TMSP is an asynchronous protocol: message responses are written back asynchronously to the platform.

Applications must be deterministic.

For more information on TMSP, motivations, and tutorials, please visit our blog post that explains it all.

Message types

AppendTx

  • Arguments:
    • TxBytes ([]byte)
  • Returns:
    • RetCode (int8)
  • Usage:
    Append and run a transaction. The transaction may or may not be final.

GetHash

  • Returns:
    • RetCode (int8)
    • Hash ([]byte)
  • Usage:
    Return a Merkle root hash of the application state

Commit

  • Returns:
    • RetCode (int8)
  • Usage:
    Finalize all appended transactions

Rollback

  • Returns:
    • RetCode (int8)
  • Usage:
    Roll back to the last commit

AddListener

  • Arguments:
    • EventKey (string)
  • Returns:
    • RetCode (int8)
  • Usage:
    Add event listener callback for events with given key.

RemoveListener

  • Arguments:
    • EventKey (string)
  • Returns:
    • RetCode (int8)
  • Usage:
    Remove event listener callback for events with given key.

Flush

  • Usage:
    Flush the response queue. Applications that implement types.Application need not implement this message -- it's handled by the project.

Info

  • Returns:
    • Data ([]string)
  • Usage:
    Return an array of strings about the application state. Application specific.

SetOption

  • Arguments:
    • Key (string)
    • Value (string)
  • Returns:
    • RetCode (int8)
  • Usage:
    Set application options. E.g. Key="mode", Value="mempool" for a mempool connection, or Key="mode", Value="consensus" for a consensus connection. Other options are application specific.