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188 lines
4.8 KiB
188 lines
4.8 KiB
RPC
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===
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Coming soon: RPC docs powered by `slate <https://github.com/lord/slate>`__. Until then, read on.
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Tendermint supports the following RPC protocols:
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- URI over HTTP
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- JSONRPC over HTTP
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- JSONRPC over websockets
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Tendermint RPC is build using `our own RPC
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library <https://github.com/tendermint/tendermint/tree/master/rpc/lib>`__.
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Documentation and tests for that library could be found at
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``tendermint/rpc/lib`` directory.
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Configuration
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~~~~~~~~~~~~~
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Set the ``laddr`` config parameter under ``[rpc]`` table in the
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$TMHOME/config.toml file or the ``--rpc.laddr`` command-line flag to the
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desired protocol://host:port setting. Default: ``tcp://0.0.0.0:46657``.
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Arguments
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~~~~~~~~~
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Arguments which expect strings or byte arrays may be passed as quoted
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strings, like ``"abc"`` or as ``0x``-prefixed strings, like
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``0x616263``.
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URI/HTTP
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~~~~~~~~
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Example request:
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.. code:: bash
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curl -s 'http://localhost:46657/broadcast_tx_sync?tx="abc"' | jq .
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Response:
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.. code:: json
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{
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"error": "",
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"result": {
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"hash": "2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF",
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"log": "",
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"data": "",
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"code": 0
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},
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"id": "",
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"jsonrpc": "2.0"
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}
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The first entry in the result-array (``96``) is the method this response
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correlates with. ``96`` refers to "ResultTypeBroadcastTx", see
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`responses.go <https://github.com/tendermint/tendermint/blob/master/rpc/core/types/responses.go>`__
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for a complete overview.
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JSONRPC/HTTP
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~~~~~~~~~~~~
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JSONRPC requests can be POST'd to the root RPC endpoint via HTTP (e.g.
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``http://localhost:46657/``).
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Example request:
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.. code:: json
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{
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"method": "broadcast_tx_sync",
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"jsonrpc": "2.0",
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"params": [ "abc" ],
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"id": "dontcare"
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}
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JSONRPC/websockets
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~~~~~~~~~~~~~~~~~~
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JSONRPC requests can be made via websocket. The websocket endpoint is at
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``/websocket``, e.g. ``http://localhost:46657/websocket``. Asynchronous
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RPC functions like event ``subscribe`` and ``unsubscribe`` are only
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available via websockets.
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Endpoints
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~~~~~~~~~
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An HTTP Get request to the root RPC endpoint (e.g.
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``http://localhost:46657``) shows a list of available endpoints.
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::
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Available endpoints:
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http://localhost:46657/abci_info
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http://localhost:46657/dump_consensus_state
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http://localhost:46657/genesis
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http://localhost:46657/net_info
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http://localhost:46657/num_unconfirmed_txs
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http://localhost:46657/status
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http://localhost:46657/unconfirmed_txs
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http://localhost:46657/unsafe_flush_mempool
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http://localhost:46657/unsafe_stop_cpu_profiler
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http://localhost:46657/validators
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Endpoints that require arguments:
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http://localhost:46657/abci_query?path=_&data=_&prove=_
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http://localhost:46657/block?height=_
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http://localhost:46657/blockchain?minHeight=_&maxHeight=_
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http://localhost:46657/broadcast_tx_async?tx=_
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http://localhost:46657/broadcast_tx_commit?tx=_
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http://localhost:46657/broadcast_tx_sync?tx=_
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http://localhost:46657/commit?height=_
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http://localhost:46657/dial_seeds?seeds=_
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http://localhost:46657/subscribe?event=_
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http://localhost:46657/tx?hash=_&prove=_
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http://localhost:46657/unsafe_start_cpu_profiler?filename=_
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http://localhost:46657/unsafe_write_heap_profile?filename=_
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http://localhost:46657/unsubscribe?event=_
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tx
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~~
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Returns a transaction matching the given transaction hash.
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**Parameters**
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1. hash - the transaction hash
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2. prove - include a proof of the transaction inclusion in the block in
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the result (optional, default: false)
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**Returns**
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- ``proof``: the ``types.TxProof`` object
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- ``tx``: ``[]byte`` - the transaction
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- ``tx_result``: the ``abci.Result`` object
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- ``index``: ``int`` - index of the transaction
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- ``height``: ``int`` - height of the block where this transaction was
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in
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**Example**
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.. code:: bash
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curl -s 'http://localhost:46657/broadcast_tx_commit?tx="abc"' | jq .
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# {
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# "error": "",
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# "result": {
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# "hash": "2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF",
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# "log": "",
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# "data": "",
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# "code": 0
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# },
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# "id": "",
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# "jsonrpc": "2.0"
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# }
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curl -s 'http://localhost:46657/tx?hash=0x2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF' | jq .
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# {
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# "error": "",
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# "result": {
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# "proof": {
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# "Proof": {
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# "aunts": []
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# },
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# "Data": "YWJjZA==",
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# "RootHash": "2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF",
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# "Total": 1,
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# "Index": 0
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# },
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# "tx": "YWJjZA==",
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# "tx_result": {
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# "log": "",
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# "data": "",
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# "code": 0
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# },
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# "index": 0,
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# "height": 52
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# },
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# "id": "",
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# "jsonrpc": "2.0"
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# }
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More Examples
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~~~~~~~~~~~~~
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See the various bash tests using curl in ``test/``, and examples using
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the ``Go`` API in ``rpc/client/``.
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