core

package
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 Go to latest Published: Dec 29, 2017 License: Apache-2.0 Imports: 25 Imported by: 0

README

Tendermint RPC

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Documentation

Overview

Introduction

Tendermint supports the following RPC protocols:

* URI over HTTP * JSONRPC over HTTP * JSONRPC over websockets

Tendermint RPC is built using [our own RPC library](https://github.com/tendermint/tendermint/tree/master/rpc/lib). Documentation and tests for that library could be found at `tendermint/rpc/lib` directory.

## Configuration

Set the `laddr` config parameter under `[rpc]` table in the `$TMHOME/config.toml` file or the `--rpc.laddr` command-line flag to the desired protocol://host:port setting. Default: `tcp://0.0.0.0:46657`.

## Arguments

Arguments which expect strings or byte arrays may be passed as quoted strings, like `"abc"` or as `0x`-prefixed strings, like `0x616263`.

## URI/HTTP

```bash curl 'localhost:46657/broadcast_tx_sync?tx="abc"' ```

> Response:

```json 

{
	"error": "",
	"result": {
		"hash": "2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF",
		"log": "",
		"data": "",
		"code": 0
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

The first entry in the result-array (`96`) is the method this response correlates with. `96` refers to "ResultTypeBroadcastTx", see [responses.go](https://github.com/tendermint/tendermint/blob/master/rpc/core/types/responses.go) for a complete overview.

## JSONRPC/HTTP

JSONRPC requests can be POST'd to the root RPC endpoint via HTTP (e.g. `http://localhost:46657/`).

```json 

{
	"method": "broadcast_tx_sync",
	"jsonrpc": "2.0",
	"params": [ "abc" ],
	"id": "dontcare"
}

```

## JSONRPC/websockets

JSONRPC requests can be made via websocket. The websocket endpoint is at `/websocket`, e.g. `localhost:46657/websocket`. Asynchronous RPC functions like event `subscribe` and `unsubscribe` are only available via websockets.

## More Examples

See the various bash tests using curl in `test/`, and examples using the `Go` API in `rpc/client/`.

## Get the list

An HTTP Get request to the root RPC endpoint shows a list of available endpoints.

```bash curl 'localhost:46657' ```

> Response:

```plain Available endpoints: /abci_info /dump_consensus_state /genesis /net_info /num_unconfirmed_txs /status /unconfirmed_txs /unsafe_flush_mempool /unsafe_stop_cpu_profiler /validators

Endpoints that require arguments: /abci_query?path=_&data=_&prove=_ /block?height=_ /blockchain?minHeight=_&maxHeight=_ /broadcast_tx_async?tx=_ /broadcast_tx_commit?tx=_ /broadcast_tx_sync?tx=_ /commit?height=_ /dial_seeds?seeds=_ /subscribe?event=_ /tx?hash=_&prove=_ /unsafe_start_cpu_profiler?filename=_ /unsafe_write_heap_profile?filename=_ /unsubscribe?event=_ ```

Endpoints

Index

Constants

View Source 
const Version = "3" // rpc routes for profiling, setting config

Variables

View Source 
var Routes = map[string]*rpc.RPCFunc{

	"subscribe":       rpc.NewWSRPCFunc(Subscribe, "query"),
	"unsubscribe":     rpc.NewWSRPCFunc(Unsubscribe, "query"),
	"unsubscribe_all": rpc.NewWSRPCFunc(UnsubscribeAll, ""),

	"status":               rpc.NewRPCFunc(Status, ""),
	"net_info":             rpc.NewRPCFunc(NetInfo, ""),
	"blockchain":           rpc.NewRPCFunc(BlockchainInfo, "minHeight,maxHeight"),
	"genesis":              rpc.NewRPCFunc(Genesis, ""),
	"block":                rpc.NewRPCFunc(Block, "height"),
	"block_results":        rpc.NewRPCFunc(BlockResults, "height"),
	"commit":               rpc.NewRPCFunc(Commit, "height"),
	"tx":                   rpc.NewRPCFunc(Tx, "hash,prove"),
	"tx_search":            rpc.NewRPCFunc(TxSearch, "query,prove"),
	"validators":           rpc.NewRPCFunc(Validators, "height"),
	"dump_consensus_state": rpc.NewRPCFunc(DumpConsensusState, ""),
	"unconfirmed_txs":      rpc.NewRPCFunc(UnconfirmedTxs, ""),
	"num_unconfirmed_txs":  rpc.NewRPCFunc(NumUnconfirmedTxs, ""),

	"broadcast_tx_commit": rpc.NewRPCFunc(BroadcastTxCommit, "tx"),
	"broadcast_tx_sync":   rpc.NewRPCFunc(BroadcastTxSync, "tx"),
	"broadcast_tx_async":  rpc.NewRPCFunc(BroadcastTxAsync, "tx"),

	"abci_query": rpc.NewRPCFunc(ABCIQuery, "path,data,height,prove"),
	"abci_info":  rpc.NewRPCFunc(ABCIInfo, ""),
}

TODO: better system than "unsafe" prefix

Functions

func ABCIInfo added in v0.8.0 

func ABCIInfo() (*ctypes.ResultABCIInfo, error)

Get some info about the application.

```shell curl 'localhost:46657/abci_info' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") info, err := client.ABCIInfo() ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"response": {
			"data": "{\"size\":3}"
		}
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

func ABCIQuery added in v0.8.0 

func ABCIQuery(path string, data data.Bytes, height int64, trusted bool) (*ctypes.ResultABCIQuery, error)

Query the application for some information.

```shell curl 'localhost:46657/abci_query?path=""&data="abcd"&prove=true' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.ABCIQuery("", "abcd", true) ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"response": {
			"log": "exists",
			"height": 0,
			"proof": "010114FED0DAD959F36091AD761C922ABA3CBF1D8349990101020103011406AA2262E2F448242DF2C2607C3CDC705313EE3B0001149D16177BC71E445476174622EA559715C293740C",
			"value": "61626364",
			"key": "61626364",
			"index": -1,
			"code": 0
		}
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+--------+---------+----------+------------------------------------------------| | path | string | false | false | Path to the data ("/a/b/c") | | data | []byte | false | true | Data | | height | int64 | 0 | false | Height (0 means latest) | | trusted | bool | false | false | Does not include a proof of the data inclusion |

func AddUnsafeRoutes added in v0.10.0 

func AddUnsafeRoutes()

func Block 

func Block(heightPtr *int64) (*ctypes.ResultBlock, error)

Get block at a given height. If no height is provided, it will fetch the latest block.

```shell curl 'localhost:46657/block?height=10' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") info, err := client.Block(10) ```

> The above command returns JSON structured like this:

```json 

{
  "error": "",
  "result": {
    "block": {
      "last_commit": {
        "precommits": [
          {
            "signature": {
              "data": "12C0D8893B8A38224488DC1DE6270DF76BB1A5E9DB1C68577706A6A97C6EC34FFD12339183D5CA8BC2F46148773823DE905B7F6F5862FD564038BB7AE03BF50D",
              "type": "ed25519"
            },
            "block_id": {
              "parts": {
                "hash": "3C78F00658E06744A88F24FF97A0A5011139F34A",
                "total": 1
              },
              "hash": "F70588DAB36BDA5A953D548A16F7D48C6C2DFD78"
            },
            "type": 2,
            "round": 0,
            "height": 9,
            "validator_index": 0,
            "validator_address": "E89A51D60F68385E09E716D353373B11F8FACD62"
          }
        ],
        "blockID": {
          "parts": {
            "hash": "3C78F00658E06744A88F24FF97A0A5011139F34A",
            "total": 1
          },
          "hash": "F70588DAB36BDA5A953D548A16F7D48C6C2DFD78"
        }
      },
      "data": {
        "txs": []
      },
      "header": {
        "app_hash": "",
        "chain_id": "test-chain-6UTNIN",
        "height": 10,
        "time": "2017-05-29T15:05:53.877Z",
        "num_txs": 0,
        "last_block_id": {
          "parts": {
            "hash": "3C78F00658E06744A88F24FF97A0A5011139F34A",
            "total": 1
          },
          "hash": "F70588DAB36BDA5A953D548A16F7D48C6C2DFD78"
        },
        "last_commit_hash": "F31CC4282E50B3F2A58D763D233D76F26D26CABE",
        "data_hash": "",
        "validators_hash": "9365FC80F234C967BD233F5A3E2AB2F1E4B0E5AA"
      }
    },
    "block_meta": {
      "header": {
        "app_hash": "",
        "chain_id": "test-chain-6UTNIN",
        "height": 10,
        "time": "2017-05-29T15:05:53.877Z",
        "num_txs": 0,
        "last_block_id": {
          "parts": {
            "hash": "3C78F00658E06744A88F24FF97A0A5011139F34A",
            "total": 1
          },
          "hash": "F70588DAB36BDA5A953D548A16F7D48C6C2DFD78"
        },
        "last_commit_hash": "F31CC4282E50B3F2A58D763D233D76F26D26CABE",
        "data_hash": "",
        "validators_hash": "9365FC80F234C967BD233F5A3E2AB2F1E4B0E5AA"
      },
      "block_id": {
        "parts": {
          "hash": "277A4DBEF91483A18B85F2F5677ABF9694DFA40F",
          "total": 1
        },
        "hash": "96B1D2F2D201BA4BC383EB8224139DB1294944E5"
      }
    }
  },
  "id": "",
  "jsonrpc": "2.0"
}

```

func BlockResults added in v0.15.0 

func BlockResults(heightPtr *int64) (*ctypes.ResultBlockResults, error)

BlockResults gets ABCIResults at a given height. If no height is provided, it will fetch results for the latest block.

Results are for the height of the block containing the txs. Thus response.results[5] is the results of executing getBlock(h).Txs[5]

```shell curl 'localhost:46657/block_results?height=10' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") info, err := client.BlockResults(10) ```

> The above command returns JSON structured like this:

```json 

{
 "height": 10,
 "results": [
  {
   "code": 0,
   "data": "CAFE00F00D"
  },
  {
   "code": 102,
   "data": ""
  }
 ]
}

```

func BlockchainInfo 

func BlockchainInfo(minHeight, maxHeight int64) (*ctypes.ResultBlockchainInfo, error)

Get block headers for minHeight <= height <= maxHeight. Block headers are returned in descending order (highest first).

```shell curl 'localhost:46657/blockchain?minHeight=10&maxHeight=10' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") info, err := client.BlockchainInfo(10, 10) ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"block_metas": [
			{
				"header": {
					"app_hash": "",
					"chain_id": "test-chain-6UTNIN",
					"height": 10,
					"time": "2017-05-29T15:05:53.877Z",
					"num_txs": 0,
					"last_block_id": {
						"parts": {
							"hash": "3C78F00658E06744A88F24FF97A0A5011139F34A",
							"total": 1
						},
						"hash": "F70588DAB36BDA5A953D548A16F7D48C6C2DFD78"
					},
					"last_commit_hash": "F31CC4282E50B3F2A58D763D233D76F26D26CABE",
					"data_hash": "",
					"validators_hash": "9365FC80F234C967BD233F5A3E2AB2F1E4B0E5AA"
				},
				"block_id": {
					"parts": {
						"hash": "277A4DBEF91483A18B85F2F5677ABF9694DFA40F",
						"total": 1
					},
					"hash": "96B1D2F2D201BA4BC383EB8224139DB1294944E5"
				}
			}
		],
		"last_height": 5493
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

<aside class="notice">Returns at most 20 items.</aside>

func BroadcastTxAsync 

func BroadcastTxAsync(tx types.Tx) (*ctypes.ResultBroadcastTx, error)

Returns right away, with no response

```shell curl 'localhost:46657/broadcast_tx_async?tx="123"' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.BroadcastTxAsync("123") ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"hash": "E39AAB7A537ABAA237831742DCE1117F187C3C52",
		"log": "",
		"data": "",
		"code": 0
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+------+---------+----------+-----------------| | tx | Tx | nil | true | The transaction |

func BroadcastTxCommit 

func BroadcastTxCommit(tx types.Tx) (*ctypes.ResultBroadcastTxCommit, error)

CONTRACT: only returns error if mempool.BroadcastTx errs (ie. problem with the app) or if we timeout waiting for tx to commit. If CheckTx or DeliverTx fail, no error will be returned, but the returned result will contain a non-OK ABCI code.

```shell curl 'localhost:46657/broadcast_tx_commit?tx="789"' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.BroadcastTxCommit("789") ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"height": 26682,
		"hash": "75CA0F856A4DA078FC4911580360E70CEFB2EBEE",
		"deliver_tx": {
			"log": "",
			"data": "",
			"code": 0
		},
		"check_tx": {
			"log": "",
			"data": "",
			"code": 0
		}
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+------+---------+----------+-----------------| | tx | Tx | nil | true | The transaction |

func BroadcastTxSync 

func BroadcastTxSync(tx types.Tx) (*ctypes.ResultBroadcastTx, error)

Returns with the response from CheckTx.

```shell curl 'localhost:46657/broadcast_tx_sync?tx="456"' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.BroadcastTxSync("456") ```

> The above command returns JSON structured like this:

```json 

{
	"jsonrpc": "2.0",
	"id": "",
	"result": {
		"code": 0,
		"data": "",
		"log": "",
		"hash": "0D33F2F03A5234F38706E43004489E061AC40A2E"
	},
	"error": ""
}

```

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+------+---------+----------+-----------------| | tx | Tx | nil | true | The transaction |

func Commit added in v0.9.0 

func Commit(heightPtr *int64) (*ctypes.ResultCommit, error)

Get block commit at a given height. If no height is provided, it will fetch the commit for the latest block.

```shell curl 'localhost:46657/commit?height=11' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") info, err := client.Commit(11) ```

> The above command returns JSON structured like this:

```json 

{
  "error": "",
  "result": {
    "canonical": true,
    "commit": {
      "precommits": [
        {
          "signature": {
            "data": "00970429FEC652E9E21D106A90AE8C5413759A7488775CEF4A3F44DC46C7F9D941070E4FBE9ED54DF247FA3983359A0C3A238D61DE55C75C9116D72ABC9CF50F",
            "type": "ed25519"
          },
          "block_id": {
            "parts": {
              "hash": "9E37CBF266BC044A779E09D81C456E653B89E006",
              "total": 1
            },
            "hash": "CC6E861E31CA4334E9888381B4A9137D1458AB6A"
          },
          "type": 2,
          "round": 0,
          "height": 11,
          "validator_index": 0,
          "validator_address": "E89A51D60F68385E09E716D353373B11F8FACD62"
        }
      ],
      "blockID": {
        "parts": {
          "hash": "9E37CBF266BC044A779E09D81C456E653B89E006",
          "total": 1
        },
        "hash": "CC6E861E31CA4334E9888381B4A9137D1458AB6A"
      }
    },
    "header": {
      "app_hash": "",
      "chain_id": "test-chain-6UTNIN",
      "height": 11,
      "time": "2017-05-29T15:05:54.893Z",
      "num_txs": 0,
      "last_block_id": {
        "parts": {
          "hash": "277A4DBEF91483A18B85F2F5677ABF9694DFA40F",
          "total": 1
        },
        "hash": "96B1D2F2D201BA4BC383EB8224139DB1294944E5"
      },
      "last_commit_hash": "3CE0C9727CE524BA9CB7C91E28F08E2B94001087",
      "data_hash": "",
      "validators_hash": "9365FC80F234C967BD233F5A3E2AB2F1E4B0E5AA"
    }
  },
  "id": "",
  "jsonrpc": "2.0"
}

```

func DumpConsensusState 

func DumpConsensusState() (*ctypes.ResultDumpConsensusState, error)

Dump consensus state.

```shell curl 'localhost:46657/dump_consensus_state' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") state, err := client.DumpConsensusState() ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"peer_round_states": [],
		"round_state": "RoundState{\n  H:3537 R:0 S:RoundStepNewHeight\n  StartTime:     2017-05-31 12:32:31.178653883 +0000 UTC\n  CommitTime:    2017-05-31 12:32:30.178653883 +0000 UTC\n  Validators:    ValidatorSet{\n      Proposer: Validator{E89A51D60F68385E09E716D353373B11F8FACD62 {PubKeyEd25519{68DFDA7E50F82946E7E8546BED37944A422CD1B831E70DF66BA3B8430593944D}} VP:10 A:0}\n      Validators:\n        Validator{E89A51D60F68385E09E716D353373B11F8FACD62 {PubKeyEd25519{68DFDA7E50F82946E7E8546BED37944A422CD1B831E70DF66BA3B8430593944D}} VP:10 A:0}\n    }\n  Proposal:      <nil>\n  ProposalBlock: nil-PartSet nil-Block\n  LockedRound:   0\n  LockedBlock:   nil-PartSet nil-Block\n  Votes:         HeightVoteSet{H:3537 R:0~0\n      VoteSet{H:3537 R:0 T:1 +2/3:<nil> BA{1:_} map[]}\n      VoteSet{H:3537 R:0 T:2 +2/3:<nil> BA{1:_} map[]}\n    }\n  LastCommit: VoteSet{H:3536 R:0 T:2 +2/3:B7F988FBCDC68F9320E346EECAA76E32F6054654:1:673BE7C01F74 BA{1:X} map[]}\n  LastValidators:    ValidatorSet{\n      Proposer: Validator{E89A51D60F68385E09E716D353373B11F8FACD62 {PubKeyEd25519{68DFDA7E50F82946E7E8546BED37944A422CD1B831E70DF66BA3B8430593944D}} VP:10 A:0}\n      Validators:\n        Validator{E89A51D60F68385E09E716D353373B11F8FACD62 {PubKeyEd25519{68DFDA7E50F82946E7E8546BED37944A422CD1B831E70DF66BA3B8430593944D}} VP:10 A:0}\n    }\n}"
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

func Genesis 

func Genesis() (*ctypes.ResultGenesis, error)

Get genesis file.

```shell curl 'localhost:46657/genesis' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") genesis, err := client.Genesis() ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"genesis": {
			"app_hash": "",
			"validators": [
				{
					"name": "",
					"power": 10,
					"pub_key": {
						"data": "68DFDA7E50F82946E7E8546BED37944A422CD1B831E70DF66BA3B8430593944D",
						"type": "ed25519"
					}
				}
			],
			"chain_id": "test-chain-6UTNIN",
			"genesis_time": "2017-05-29T15:05:41.671Z"
		}
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

func NetInfo 

func NetInfo() (*ctypes.ResultNetInfo, error)

Get network info.

```shell curl 'localhost:46657/net_info' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") info, err := client.NetInfo() ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"peers": [],
		"listeners": [
			"Listener(@10.0.2.15:46656)"
		],
		"listening": true
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

func NumUnconfirmedTxs 

func NumUnconfirmedTxs() (*ctypes.ResultUnconfirmedTxs, error)

Get number of unconfirmed transactions.

```shell curl 'localhost:46657/num_unconfirmed_txs' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.UnconfirmedTxs() ```

> The above command returns JSON structured like this:

```json 

{
  "error": "",
  "result": {
    "txs": null,
    "n_txs": 0
  },
  "id": "",
  "jsonrpc": "2.0"
}

```

func SetAddrBook added in v0.9.0 

func SetAddrBook(book *p2p.AddrBook)

func SetBlockStore 

func SetBlockStore(bs types.BlockStore)

func SetConsensusReactor 

func SetConsensusReactor(conR *consensus.ConsensusReactor)

func SetConsensusState 

func SetConsensusState(cs Consensus)

func SetEventBus added in v0.13.0 

func SetEventBus(b *types.EventBus)

func SetEvidencePool added in v0.15.0 

func SetEvidencePool(evpool types.EvidencePool)

func SetGenesisDoc 

func SetGenesisDoc(doc *types.GenesisDoc)

func SetLogger added in v0.10.0 

func SetLogger(l log.Logger)

func SetMempool added in v0.7.3 

func SetMempool(mem types.Mempool)

func SetProxyAppQuery added in v0.7.1 

func SetProxyAppQuery(appConn proxy.AppConnQuery)

func SetPubKey added in v0.7.3 

func SetPubKey(pk crypto.PubKey)

func SetStateDB added in v0.15.0 

func SetStateDB(db dbm.DB)

func SetSwitch 

func SetSwitch(sw P2P)

func SetTxIndexer added in v0.9.1 

func SetTxIndexer(indexer txindex.TxIndexer)

func Status 

func Status() (*ctypes.ResultStatus, error)

Get Tendermint status including node info, pubkey, latest block hash, app hash, block height and time.

```shell curl 'localhost:46657/status' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.Status() ```

> The above command returns JSON structured like this:

```json 

{
	"result": {
		"syncing": false,
		"latest_block_time": "2017-12-07T18:19:47.617Z",
		"latest_block_height": 6,
		"latest_app_hash": "",
		"latest_block_hash": "A63D0C3307DEDCCFCC82ED411AE9108B70B29E02",
		"pub_key": {
			"data": "8C9A68070CBE33F9C445862BA1E9D96A75CEB68C0CF6ADD3652D07DCAC5D0380",
			"type": "ed25519"
		},
		"node_info": {
			"other": [
				"wire_version=0.7.2",
				"p2p_version=0.5.0",
				"consensus_version=v1/0.2.2",
				"rpc_version=0.7.0/3",
				"tx_index=on",
				"rpc_addr=tcp://0.0.0.0:46657"
			],
			"version": "0.13.0-14ccc8b",
			"listen_addr": "10.0.2.15:46656",
			"remote_addr": "",
			"network": "test-chain-qhVCa2",
			"moniker": "vagrant-ubuntu-trusty-64",
			"pub_key": "844981FE99ABB19F7816F2D5E94E8A74276AB1153760A7799E925C75401856C6"
		}
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

func Subscribe 

func Subscribe(wsCtx rpctypes.WSRPCContext, query string) (*ctypes.ResultSubscribe, error)

Subscribe for events via WebSocket.

```go import "github.com/tendermint/tendermint/types"

client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.AddListenerForEvent(types.EventStringNewBlock()) ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {},
	"id": "",
	"jsonrpc": "2.0"
}

```

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+--------+---------+----------+-------------| | event | string | "" | true | Event name |

<aside class="notice">WebSocket only</aside>

func Tx added in v0.9.1 

func Tx(hash []byte, prove bool) (*ctypes.ResultTx, error)

Tx allows you to query the transaction results. `nil` could mean the transaction is in the mempool, invalidated, or was not sent in the first place.

```shell curl "localhost:46657/tx?hash=0x2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF" ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") tx, err := client.Tx([]byte("2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF"), true) ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"proof": {
			"Proof": {
				"aunts": []
			},
			"Data": "YWJjZA==",
			"RootHash": "2B8EC32BA2579B3B8606E42C06DE2F7AFA2556EF",
			"Total": 1,
			"Index": 0
		},
		"tx": "YWJjZA==",
		"tx_result": {
			"log": "",
			"data": "",
			"code": 0
		},
		"index": 0,
		"height": 52
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

Returns a transaction matching the given transaction hash.

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+--------+---------+----------+-----------------------------------------------------------| | hash | []byte | nil | true | The transaction hash | | prove | bool | false | false | Include a proof of the transaction inclusion in the block |

### Returns

- `proof`: the `types.TxProof` object - `tx`: `[]byte` - the transaction - `tx_result`: the `abci.Result` object - `index`: `int` - index of the transaction - `height`: `int` - height of the block where this transaction was in

func TxSearch added in v0.13.0 

func TxSearch(query string, prove bool) ([]*ctypes.ResultTx, error)

TxSearch allows you to query for multiple transactions results.

```shell curl "localhost:46657/tx_search?query=\"account.owner='Ivan'\"&prove=true" ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") q, err := tmquery.New("account.owner='Ivan'") tx, err := client.TxSearch(q, true) ```

> The above command returns JSON structured like this:

```json 

{
  "result": [
    {
      "proof": {
        "Proof": {
          "aunts": [
            "J3LHbizt806uKnABNLwG4l7gXCA=",
            "iblMO/M1TnNtlAefJyNCeVhjAb0=",
            "iVk3ryurVaEEhdeS0ohAJZ3wtB8=",
            "5hqMkTeGqpct51ohX0lZLIdsn7Q=",
            "afhsNxFnLlZgFDoyPpdQSe0bR8g="
          ]
        },
        "Data": "mvZHHa7HhZ4aRT0xMDA=",
        "RootHash": "F6541223AA46E428CB1070E9840D2C3DF3B6D776",
        "Total": 32,
        "Index": 31
      },
      "tx": "mvZHHa7HhZ4aRT0xMDA=",
      "tx_result": {},
      "index": 31,
      "height": 12
    }
  ],
  "id": "",
  "jsonrpc": "2.0"
}

```

Returns transactions matching the given query.

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+--------+---------+----------+-----------------------------------------------------------| | query | string | "" | true | Query | | prove | bool | false | false | Include proofs of the transactions inclusion in the block |

### Returns

- `proof`: the `types.TxProof` object - `tx`: `[]byte` - the transaction - `tx_result`: the `abci.Result` object - `index`: `int` - index of the transaction - `height`: `int` - height of the block where this transaction was in

func UnconfirmedTxs 

func UnconfirmedTxs() (*ctypes.ResultUnconfirmedTxs, error)

Get unconfirmed transactions including their number.

```shell curl 'localhost:46657/unconfirmed_txs' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.UnconfirmedTxs() ```

> The above command returns JSON structured like this:

```json 

{
  "error": "",
  "result": {
    "txs": [],
    "n_txs": 0
  },
  "id": "",
  "jsonrpc": "2.0"
}

```

func UnsafeDialSeeds added in v0.7.4 

func UnsafeDialSeeds(seeds []string) (*ctypes.ResultDialSeeds, error)

func UnsafeFlushMempool 

func UnsafeFlushMempool() (*ctypes.ResultUnsafeFlushMempool, error)

func UnsafeStartCPUProfiler 

func UnsafeStartCPUProfiler(filename string) (*ctypes.ResultUnsafeProfile, error)

func UnsafeStopCPUProfiler 

func UnsafeStopCPUProfiler() (*ctypes.ResultUnsafeProfile, error)

func UnsafeWriteHeapProfile 

func UnsafeWriteHeapProfile(filename string) (*ctypes.ResultUnsafeProfile, error)

func Unsubscribe 

func Unsubscribe(wsCtx rpctypes.WSRPCContext, query string) (*ctypes.ResultUnsubscribe, error)

Unsubscribe from events via WebSocket.

```go import 'github.com/tendermint/tendermint/types'

client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") result, err := client.RemoveListenerForEvent(types.EventStringNewBlock()) ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {},
	"id": "",
	"jsonrpc": "2.0"
}

```

### Query Parameters

| Parameter | Type | Default | Required | Description | |-----------+--------+---------+----------+-------------| | event | string | "" | true | Event name |

<aside class="notice">WebSocket only</aside>

func UnsubscribeAll added in v0.13.0 

func UnsubscribeAll(wsCtx rpctypes.WSRPCContext) (*ctypes.ResultUnsubscribe, error)

func Validators 

func Validators(heightPtr *int64) (*ctypes.ResultValidators, error)

Get the validator set at the given block height. If no height is provided, it will fetch the current validator set.

```shell curl 'localhost:46657/validators' ```

```go client := client.NewHTTP("tcp://0.0.0.0:46657", "/websocket") state, err := client.Validators() ```

> The above command returns JSON structured like this:

```json 

{
	"error": "",
	"result": {
		"validators": [
			{
				"accum": 0,
				"voting_power": 10,
				"pub_key": {
					"data": "68DFDA7E50F82946E7E8546BED37944A422CD1B831E70DF66BA3B8430593944D",
					"type": "ed25519"
				},
				"address": "E89A51D60F68385E09E716D353373B11F8FACD62"
			}
		],
		"block_height": 5241
	},
	"id": "",
	"jsonrpc": "2.0"
}

```

Types

type Consensus added in v0.7.3 

type Consensus interface {
	GetState() sm.State
	GetValidators() (int64, []*types.Validator)
	GetRoundState() *cstypes.RoundState
}

type P2P added in v0.7.3 

type P2P interface {
	Listeners() []p2p.Listener
	Peers() p2p.IPeerSet
	NumPeers() (outbound, inbound, dialig int)
	NodeInfo() *p2p.NodeInfo
	IsListening() bool
	DialSeeds(*p2p.AddrBook, []string) error
}

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