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* Changed the spec text to agreed VoteExtension solution
* Revert "Removed protobufs related to vote extensions"
This reverts commit 4566f1e302.
* Changes to ABCI protocol buffers
* Update spec/core/data_structures.md
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Update spec/core/data_structures.md
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
* Fix dangling link in ABCI++ readme
* Addressed comments
Co-authored-by: M. J. Fromberger <fromberger@interchain.io>
45 lines
1.9 KiB
Markdown
45 lines
1.9 KiB
Markdown
---
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order: 1
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parent:
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title: ABCI++
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order: 3
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---
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# ABCI++
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## Introduction
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ABCI++ is a major evolution of ABCI (**A**pplication **B**lock**c**hain **I**nterface).
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Like its predecessor, ABCI++ is the interface between Tendermint (a state-machine
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replication engine) and the actual state machine being replicated (i.e., the Application).
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The API consists of a set of _methods_, each with a corresponding `Request` and `Response`
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message type.
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The methods are always initiated by Tendermint. The Application implements its logic
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for handling all ABCI++ methods.
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Thus, Tendermint always sends the `Request*` messages and receives the `Response*` messages
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in return.
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All ABCI++ messages and methods are defined in [protocol buffers](../../proto/tendermint/abci/types.proto).
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This allows Tendermint to run with applications written in many programming languages.
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This specification is split as follows:
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- [Basic concepts and definitions](./abci++_basic_concepts_002_draft.md) - definitions and descriptions
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of concepts that are needed to understand other parts of this sepcification.
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- [Methods](./abci++_methods_002_draft.md) - complete details on all ABCI++ methods
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and message types.
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- [Requirements for the Application](./abci++_app_requirements_002_draft.md) - formal requirements
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on the Application's logic to ensure liveness of Tendermint. These requirements define what
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Tendermint expects from the Application.
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- [Tendermint's expected behavior](./abci++_tmint_expected_behavior_002_draft.md) - specification of
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how the different ABCI++ methods may be called by Tendermint. This explains what the Application
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is to expect from Tendermint.
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>**TODO** Re-read these and remove redundant info
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- [Applications](../abci/apps.md) - how to manage ABCI application state and other
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details about building ABCI applications
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- [Client and Server](../abci/client-server.md) - for those looking to implement their
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own ABCI application servers
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