@ -1,56 +1,196 @@
## EVM state transition tool
# EVM tool
The EVM tool provides a few useful subcommands to facilitate testing at the EVM
layer.
* transition tool (`t8n`) : a stateless state transition utility
* transaction tool (`t9n`) : a transaction validation utility
* block builder tool (`b11r`): a block assembler utility
## State transition tool (`t8n`)
The `evm t8n` tool is a stateless state transition utility. It is a utility
The `evm t8n` tool is a stateless state transition utility. It is a utility
which can
which can
1. Take a prestate, including
1. Take a prestate, including
- Accounts,
- Accounts,
- Block context information,
- Block context information,
- Previous blockshashes (*optional)
- Previous blockshashes (*optional)
2. Apply a set of transactions,
2. Apply a set of transactions,
3. Apply a mining-reward (*optional),
3. Apply a mining-reward (*optional),
4. And generate a post-state, including
4. And generate a post-state, including
- State root, transaction root, receipt root,
- State root, transaction root, receipt root,
- Information about rejected transactions,
- Information about rejected transactions,
- Optionally: a full or partial post-state dump
- Optionally: a full or partial post-state dump
## Specification
### Specification
The idea is to specify the behaviour of this binary very _strict_ , so that other
The idea is to specify the behaviour of this binary very _strict_ , so that other
node implementors can build replicas based on their own state-machines, and the
node implementors can build replicas based on their own state-machines, and the
state generators can swap between a `geth` -based implementation and a `parityvm` -based
state generators can swap between a \`geth\`-based implementation and a \`parityvm\` -based
implementation.
implementation.
### Command line params
#### Command line params
Command line params that need to be supported are
```
--input.alloc value (default: "alloc.json")
--input.env value (default: "env.json")
--input.txs value (default: "txs.json")
--output.alloc value (default: "alloc.json")
--output.basedir value
--output.body value
--output.result value (default: "result.json")
--state.chainid value (default: 1)
--state.fork value (default: "GrayGlacier")
--state.reward value (default: 0)
--trace.memory (default: false)
--trace.nomemory (default: true)
--trace.noreturndata (default: true)
--trace.nostack (default: false)
--trace.returndata (default: false)
```
#### Objects
The transition tool uses JSON objects to read and write data related to the transition operation. The
following object definitions are required.
##### `alloc`
The `alloc` object defines the prestate that transition will begin with.
```go
// Map of address to account definition.
type Alloc map[common.Address]Account
// Genesis account. Each field is optional.
type Account struct {
Code []byte `json:"code"`
Storage map[common.Hash]common.Hash `json:"storage"`
Balance *big.Int `json:"balance"`
Nonce uint64 `json:"nonce"`
SecretKey []byte `json:"secretKey"`
}
```
##### `env`
The `env` object defines the environmental context in which the transition will
take place.
```go
type Env struct {
// required
CurrentCoinbase common.Address `json:"currentCoinbase"`
CurrentGasLimit uint64 `json:"currentGasLimit"`
CurrentNumber uint64 `json:"currentNumber"`
CurrentTimestamp uint64 `json:"currentTimestamp"`
Withdrawals []*Withdrawal `json:"withdrawals"`
// optional
CurrentDifficulty *big.Int `json:"currentDifficuly"`
CurrentRandom *big.Int `json:"currentRandom"`
CurrentBaseFee *big.Int `json:"currentBaseFee"`
ParentDifficulty *big.Int `json:"parentDifficulty"`
ParentGasUsed uint64 `json:"parentGasUsed"`
ParentGasLimit uint64 `json:"parentGasLimit"`
ParentTimestamp uint64 `json:"parentTimestamp"`
BlockHashes map[uint64]common.Hash `json:"blockHashes"`
ParentUncleHash common.Hash `json:"parentUncleHash"`
Ommers []Ommer `json:"ommers"`
}
type Ommer struct {
Delta uint64 `json:"delta"`
Address common.Address `json:"address"`
}
type Withdrawal struct {
Index uint64 `json:"index"`
ValidatorIndex uint64 `json:"validatorIndex"`
Recipient common.Address `json:"recipient"`
Amount *big.Int `json:"amount"`
}
```
##### `txs`
Command line params that has to be supported are
The `txs` object is an array of any of the transaction types: `LegacyTx` ,
`AccessListTx` , or `DynamicFeeTx` .
```go
type LegacyTx struct {
Nonce uint64 `json:"nonce"`
GasPrice *big.Int `json:"gasPrice"`
Gas uint64 `json:"gas"`
To *common.Address `json:"to"`
Value *big.Int `json:"value"`
Data []byte `json:"data"`
V *big.Int `json:"v"`
R *big.Int `json:"r"`
S *big.Int `json:"s"`
SecretKey *common.Hash `json:"secretKey"`
}
type AccessList []AccessTuple
type AccessTuple struct {
Address common.Address `json:"address" gencodec:"required"`
StorageKeys []common.Hash `json:"storageKeys" gencodec:"required"`
}
type AccessListTx struct {
ChainID *big.Int `json:"chainId"`
Nonce uint64 `json:"nonce"`
GasPrice *big.Int `json:"gasPrice"`
Gas uint64 `json:"gas"`
To *common.Address `json:"to"`
Value *big.Int `json:"value"`
Data []byte `json:"data"`
AccessList AccessList `json:"accessList"`
V *big.Int `json:"v"`
R *big.Int `json:"r"`
S *big.Int `json:"s"`
SecretKey *common.Hash `json:"secretKey"`
}
type DynamicFeeTx struct {
ChainID *big.Int `json:"chainId"`
Nonce uint64 `json:"nonce"`
GasTipCap *big.Int `json:"maxPriorityFeePerGas"`
GasFeeCap *big.Int `json:"maxFeePerGas"`
Gas uint64 `json:"gas"`
To *common.Address `json:"to"`
Value *big.Int `json:"value"`
Data []byte `json:"data"`
AccessList AccessList `json:"accessList"`
V *big.Int `json:"v"`
R *big.Int `json:"r"`
S *big.Int `json:"s"`
SecretKey *common.Hash `json:"secretKey"`
}
```
```
--trace Output full trace logs to files < txhash > .jsonl
##### `result`
--trace.nomemory Disable full memory dump in traces
--trace.nostack Disable stack output in traces
The `result` object is output after a transition is executed. It includes
--trace.noreturndata Disable return data output in traces
information about the post-transition environment.
--output.basedir value Specifies where output files are placed. Will be created if it does not exist.
--output.alloc alloc Determines where to put the alloc of the post-state.
`stdout` - into the stdout output
`stderr` - into the stderr output
--output.result result Determines where to put the result (stateroot, txroot etc) of the post-state.
`stdout` - into the stdout output
`stderr` - into the stderr output
--output.body value If set, the RLP of the transactions (block body) will be written to this file.
--input.txs stdin stdin or file name of where to find the transactions to apply. If the file prefix is '.rlp', then the data is interpreted as an RLP list of signed transactions.The '.rlp' format is identical to the output.body format. (default: "txs.json")
--state.fork value Name of ruleset to use.
--state.chainid value ChainID to use (default: 1)
--state.reward value Mining reward. Set to -1 to disable (default: 0)
```go
type ExecutionResult struct {
StateRoot common.Hash `json:"stateRoot"`
TxRoot common.Hash `json:"txRoot"`
ReceiptRoot common.Hash `json:"receiptsRoot"`
LogsHash common.Hash `json:"logsHash"`
Bloom types.Bloom `json:"logsBloom"`
Receipts types.Receipts `json:"receipts"`
Rejected []*rejectedTx `json:"rejected,omitempty"`
Difficulty *big.Int `json:"currentDifficulty"`
GasUsed uint64 `json:"gasUsed"`
BaseFee *big.Int `json:"currentBaseFee,omitempty"`
}
```
```
### Error codes and output
#### Error codes and output
All logging should happen against the `stderr` .
All logging should happen against the `stderr` .
There are a few (not many) errors that can occur, those are defined below.
There are a few (not many) errors that can occur, those are defined below.
#### EVM-based errors (`2` to `9` )
##### EVM-based errors (`2` to `9` )
- Other EVM error. Exit code `2`
- Other EVM error. Exit code `2`
- Failed configuration: when a non-supported or invalid fork was specified. Exit code `3` .
- Failed configuration: when a non-supported or invalid fork was specified. Exit code `3` .
@ -58,18 +198,30 @@ There are a few (not many) errors that can occur, those are defined below.
is invoked targeting a block which history has not been provided for, the program will
is invoked targeting a block which history has not been provided for, the program will
exit with code `4` .
exit with code `4` .
#### IO errors (`10`-`20`)
##### IO errors (`10`-`20`)
- Invalid input json: the supplied data could not be marshalled.
- Invalid input json: the supplied data could not be marshalled.
The program will exit with code `10`
The program will exit with code `10`
- IO problems: failure to load or save files, the program will exit with code `11`
- IO problems: failure to load or save files, the program will exit with code `11`
## Examples
```
# This should exit with 3
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --state.fork=Frontier+1346 2>/dev/null
exitcode:3 OK
```
#### Forks
### Basic usage
### Basic usage
The chain configuration to be used for a transition is specified via the
`--state.fork` CLI flag. A list of possible values and configurations can be
found in [`tests/init.go` ](tests/init.go ).
#### Examples
##### Basic usage
Invoking it with the provided example files
Invoking it with the provided example files
```
```
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --state.fork=Berlin
```
```
Two resulting files:
Two resulting files:
@ -94,7 +246,7 @@ Two resulting files:
{
{
"stateRoot": "0x84208a19bc2b46ada7445180c1db162be5b39b9abc8c0a54b05d32943eae4e13",
"stateRoot": "0x84208a19bc2b46ada7445180c1db162be5b39b9abc8c0a54b05d32943eae4e13",
"txRoot": "0xc4761fd7b87ff2364c7c60b6c5c8d02e522e815328aaea3f20e3b7b7ef52c42d",
"txRoot": "0xc4761fd7b87ff2364c7c60b6c5c8d02e522e815328aaea3f20e3b7b7ef52c42d",
"receiptRoot": "0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2",
"receipts Root": "0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2",
"logsHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"logsHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"receipts": [
"receipts": [
@ -116,78 +268,82 @@ Two resulting files:
"index": 1,
"index": 1,
"error": "nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
"error": "nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
}
}
]
],
"currentDifficulty": "0x20000",
"gasUsed": "0x5208"
}
}
```
```
We can make them spit out the data to e.g. `stdout` like this:
We can make them spit out the data to e.g. `stdout` like this:
```
```
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --output.result=stdout --output.alloc=stdout
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --output.result=stdout --output.alloc=stdout --state.fork=Berlin
```
```
Output:
Output:
```json
```json
{
{
"alloc": {
"alloc": {
"0x8a8eafb1cf62bfbeb1741769dae1a9dd47996192": {
"0x8a8eafb1cf62bfbeb1741769dae1a9dd47996192": {
"balance": "0xfeed1a9d",
"balance": "0xfeed1a9d",
"nonce": "0x1"
"nonce": "0x1"
},
},
"0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
"0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
"balance": "0x5ffd4878be161d74",
"balance": "0x5ffd4878be161d74",
"nonce": "0xac"
"nonce": "0xac"
},
"0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
"balance": "0xa410"
}
},
},
"0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
"result": {
"balance": "0xa410"
"stateRoot": "0x84208a19bc2b46ada7445180c1db162be5b39b9abc8c0a54b05d32943eae4e13",
}
"txRoot": "0xc4761fd7b87ff2364c7c60b6c5c8d02e522e815328aaea3f20e3b7b7ef52c42d",
},
"receiptsRoot": "0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2",
"result": {
"logsHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"stateRoot": "0x84208a19bc2b46ada7445180c1db162be5b39b9abc8c0a54b05d32943eae4e13",
"txRoot": "0xc4761fd7b87ff2364c7c60b6c5c8d02e522e815328aaea3f20e3b7b7ef52c42d",
"receiptRoot": "0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2",
"logsHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"receipts": [
{
"root": "0x",
"status": "0x1",
"cumulativeGasUsed": "0x5208",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
"logs": null,
"receipts": [
"transactionHash": "0x0557bacce3375c98d806609b8d5043072f0b6a8bae45ae5a67a00d3a1a18d673",
{
"contractAddress": "0x0000000000000000000000000000000000000000",
"root": "0x",
"gasUsed": "0x5208",
"status": "0x1",
"blockHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"cumulativeGasUsed": "0x5208",
"transactionIndex": "0x0"
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
}
"logs": null,
],
"transactionHash": "0x0557bacce3375c98d806609b8d5043072f0b6a8bae45ae5a67a00d3a1a18d673",
"rejected": [
"contractAddress": "0x0000000000000000000000000000000000000000",
{
"gasUsed": "0x5208",
"index": 1,
"blockHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"error": "nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
"transactionIndex": "0x0"
}
}
]
],
}
"rejected": [
{
"index": 1,
"error": "nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
}
],
"currentDifficulty": "0x20000",
"gasUsed": "0x5208"
}
}
}
```
```
## About Ommers
#### About Ommers
Mining rewards and ommer rewards might need to be added. This is how those are applied:
Mining rewards and ommer rewards might need to be added. This is how those are applied:
- `block_reward` is the block mining reward for the miner (`0xaa`), of a block at height `N` .
- `block_reward` is the block mining reward for the miner (`0xaa`), of a block at height `N` .
- For each ommer (mined by `0xbb` ), with blocknumber `N-delta`
- For each ommer (mined by `0xbb` ), with blocknumber `N-delta`
- (where `delta` is the difference between the current block and the ommer)
- (where `delta` is the difference between the current block and the ommer)
- The account `0xbb` (ommer miner) is awarded `(8-delta)/ 8 * block_reward`
- The account `0xbb` (ommer miner) is awarded `(8-delta)/ 8 * block_reward`
- The account `0xaa` (block miner) is awarded `block_reward / 32`
- The account `0xaa` (block miner) is awarded `block_reward / 32`
To make `state_ t8n` apply these, the following inputs are required:
To make `t8n` apply these, the following inputs are required:
- `state.reward`
- `-- state.reward`
- For ethash, it is `5000000000000000000` `wei` ,
- For ethash, it is `5000000000000000000` `wei` ,
- If this is not defined, mining rewards are not applied,
- If this is not defined, mining rewards are not applied,
- A value of `0` is valid, and causes accounts to be 'touched'.
- A value of `0` is valid, and causes accounts to be 'touched'.
- For each ommer, the tool needs to be given an `address ` and a `delta` . This
- For each ommer, the tool needs to be given an `addres\ ` and a `delta` . This
is done via the `env` .
is done via the `ommers` field in ` env` .
Note: the tool does not verify that e.g. the normal uncle rules apply,
Note: the tool does not verify that e.g. the normal uncle rules apply,
and allows e.g two uncles at the same height, or the uncle-distance. This means that
and allows e.g two uncles at the same height, or the uncle-distance. This means that
@ -208,24 +364,24 @@ Example:
]
]
}
}
```
```
When applying this, using a reward of `0x8 0`
When applying this, using a reward of `0x08 `
Output:
Output:
```json
```json
{
{
"alloc": {
"alloc": {
"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa": {
"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa": {
"balance": "0x88"
"balance": "0x88"
},
},
"0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb": {
"0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb": {
"balance": "0x70"
"balance": "0x70"
},
},
"0xcccccccccccccccccccccccccccccccccccccccc": {
"0xcccccccccccccccccccccccccccccccccccccccc": {
"balance": "0x60"
"balance": "0x60"
}
}
}
}
}
}
```
```
### Future EIPS
#### Future EIPS
It is also possible to experiment with future eips that are not yet defined in a hard fork.
It is also possible to experiment with future eips that are not yet defined in a hard fork.
Example, putting EIP-1344 into Frontier:
Example, putting EIP-1344 into Frontier:
@ -233,17 +389,13 @@ Example, putting EIP-1344 into Frontier:
./evm t8n --state.fork=Frontier+1344 --input.pre=./testdata/1/pre.json --input.txs=./testdata/1/txs.json --input.env=/testdata/1/env.json
./evm t8n --state.fork=Frontier+1344 --input.pre=./testdata/1/pre.json --input.txs=./testdata/1/txs.json --input.env=/testdata/1/env.json
```
```
### Block history
#### Block history
The `BLOCKHASH` opcode requires blockhashes to be provided by the caller, inside the `env` .
The `BLOCKHASH` opcode requires blockhashes to be provided by the caller, inside the `env` .
If a required blockhash is not provided, the exit code should be `4` :
If a required blockhash is not provided, the exit code should be `4` :
Example where blockhashes are provided:
Example where blockhashes are provided:
```
```
./evm --verbosity=1 t8n --input.alloc=./testdata/3/alloc.json --input.txs=./testdata/3/txs.json --input.env=./testdata/3/env.json --trace
./evm t8n --input.alloc=./testdata/3/alloc.json --input.txs=./testdata/3/txs.json --input.env=./testdata/3/env.json --trace --state.fork=Berlin
INFO [07-27|11:53:40.960] Trie dumping started root=b7341d..857ea1
INFO [07-27|11:53:40.960] Trie dumping complete accounts=3 elapsed="103.298µs"
INFO [07-27|11:53:40.960] Wrote file file=alloc.json
INFO [07-27|11:53:40.960] Wrote file file=result.json
```
```
@ -251,34 +403,24 @@ INFO [07-27|11:53:40.960] Wrote file file=result.j
cat trace-0-0x72fadbef39cd251a437eea619cfeda752271a5faaaa2147df012e112159ffb81.jsonl | grep BLOCKHASH -C2
cat trace-0-0x72fadbef39cd251a437eea619cfeda752271a5faaaa2147df012e112159ffb81.jsonl | grep BLOCKHASH -C2
```
```
```
```
{"pc":0,"op":96,"gas":"0x5f58ef8","gasCost":"0x3","memory":"0x","mem Size":0,"stack":[],"returnData":"0x"," depth":1,"refund":0,"opName":"PUSH1","error":" "}
{"pc":0,"op":96,"gas":"0x5f58ef8","gasCost":"0x3","memSize":0,"stack":[],"depth":1,"refund":0,"opName":"PUSH1"}
{"pc":2,"op":64,"gas":"0x5f58ef5","gasCost":"0x14","memory":"0x","mem Size":0,"stack":["0x1"],"returnData":"0x"," depth":1,"refund":0,"opName":"BLOCKHASH","error":" "}
{"pc":2,"op":64,"gas":"0x5f58ef5","gasCost":"0x14","memSize":0,"stack":["0x1"],"depth":1,"refund":0,"opName":"BLOCKHASH"}
{"pc":3,"op":0,"gas":"0x5f58ee1","gasCost":"0x0","memory":"0x","mem Size":0,"stack":["0xdac58aa524e50956d0c0bae7f3f8bb9d35381365d07804dd5b48a5a297c06af4"],"returnData":"0x"," depth":1,"refund":0,"opName":"STOP","error":" "}
{"pc":3,"op":0,"gas":"0x5f58ee1","gasCost":"0x0","memSize":0,"stack":["0xdac58aa524e50956d0c0bae7f3f8bb9d35381365d07804dd5b48a5a297c06af4"],"depth":1,"refund":0,"opName":"STOP"}
{"output":"","gasUsed":"0x17","time":156276 }
{"output":"","gasUsed":"0x17"}
```
```
In this example, the caller has not provided the required blockhash:
In this example, the caller has not provided the required blockhash:
```
```
./evm t8n --input.alloc=./testdata/4/alloc.json --input.txs=./testdata/4/txs.json --input.env=./testdata/4/env.json --trace
./evm t8n --input.alloc=./testdata/4/alloc.json --input.txs=./testdata/4/txs.json --input.env=./testdata/4/env.json --trace --state.fork=Berlin
ERROR(4): getHash(3) invoked, blockhash for that block not provided
ERROR(4): getHash(3) invoked, blockhash for that block not provided
```
```
Error code: 4
Error code: 4
### Chaining
#### Chaining
Another thing that can be done, is to chain invocations:
Another thing that can be done, is to chain invocations:
```
```
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --output.alloc=stdout | ./evm t8n --input.alloc=stdin --input.env=./testdata/1/env.json --input.txs=./testdata/1/txs.json
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --state.fork=Berlin --output.alloc=stdout | ./evm t8n --input.alloc=stdin --input.env=./testdata/1/env.json --input.txs=./testdata/1/txs.json --state.fork=Berlin
INFO [07-27|11:53:41.049] rejected tx index=1 hash=0557ba..18d673 from=0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192 error="nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
INFO [07-27|11:53:41.050] Trie dumping started root=84208a..ae4e13
INFO [07-27|11:53:41.050] Trie dumping complete accounts=3 elapsed="59.412µs"
INFO [07-27|11:53:41.050] Wrote file file=result.json
INFO [07-27|11:53:41.051] rejected tx index=0 hash=0557ba..18d673 from=0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192 error="nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
INFO [07-27|11:53:41.051] rejected tx index=1 hash=0557ba..18d673 from=0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192 error="nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
INFO [07-27|11:53:41.052] Trie dumping started root=84208a..ae4e13
INFO [07-27|11:53:41.052] Trie dumping complete accounts=3 elapsed="45.734µs"
INFO [07-27|11:53:41.052] Wrote file file=alloc.json
INFO [07-27|11:53:41.052] Wrote file file=result.json
```
```
What happened here, is that we first applied two identical transactions, so the second one was rejected.
What happened here, is that we first applied two identical transactions, so the second one was rejected.
@ -288,7 +430,7 @@ the same two transactions: this time, both failed due to too low nonce.
In order to meaningfully chain invocations, one would need to provide meaningful new `env` , otherwise the
In order to meaningfully chain invocations, one would need to provide meaningful new `env` , otherwise the
actual blocknumber (exposed to the EVM) would not increase.
actual blocknumber (exposed to the EVM) would not increase.
### Transactions in RLP form
#### Transactions in RLP form
It is possible to provide already-signed transactions as input to, using an `input.txs` which ends with the `rlp` suffix.
It is possible to provide already-signed transactions as input to, using an `input.txs` which ends with the `rlp` suffix.
The input format for RLP-form transactions is _identical_ to the _output_ format for block bodies. Therefore, it's fully possible
The input format for RLP-form transactions is _identical_ to the _output_ format for block bodies. Therefore, it's fully possible
@ -297,12 +439,11 @@ to use the evm to go from `json` input to `rlp` input.
The following command takes **json** the transactions in `./testdata/13/txs.json` and signs them. After execution, they are output to `signed_txs.rlp` .:
The following command takes **json** the transactions in `./testdata/13/txs.json` and signs them. After execution, they are output to `signed_txs.rlp` .:
```
```
./evm t8n --state.fork=London --input.alloc=./testdata/13/alloc.json --input.txs=./testdata/13/txs.json --input.env=./testdata/13/env.json --output.result=alloc_jsontx.json --output.body=signed_txs.rlp
./evm t8n --state.fork=London --input.alloc=./testdata/13/alloc.json --input.txs=./testdata/13/txs.json --input.env=./testdata/13/env.json --output.result=alloc_jsontx.json --output.body=signed_txs.rlp
INFO [07-27|11:53:41.124] Trie dumping started root=e4b924..6aef61
INFO [12-07|04:30:12.380] Trie dumping started root=e4b924..6aef61
INFO [07-27|11:53:41.124] Trie dumping complete accounts=3 elapsed="94.284µs"
INFO [12-07|04:30:12.380] Trie dumping complete accounts=3 elapsed="85.765µs"
INFO [07-27|11:53:41.125] Wrote file file=alloc.json
INFO [12-07|04:30:12.380] Wrote file file=alloc.json
INFO [07-27|11:53:41.125] Wrote file file=alloc_jsontx.json
INFO [12-07|04:30:12.380] Wrote file file=alloc_jsontx.json
INFO [07-27|11:53:41.125] Wrote file file=signed_txs.rlp
INFO [12-07|04:30:12.380] Wrote file file=signed_txs.rlp
```
```
The `output.body` is the rlp-list of transactions, encoded in hex and placed in a string a'la `json` encoding rules:
The `output.body` is the rlp-list of transactions, encoded in hex and placed in a string a'la `json` encoding rules:
@ -322,13 +463,11 @@ rlpdump -hex $(cat signed_txs.rlp | jq -r )
Now, we can now use those (or any other already signed transactions), as input, like so:
Now, we can now use those (or any other already signed transactions), as input, like so:
```
```
./evm t8n --state.fork=London --input.alloc=./testdata/13/alloc.json --input.txs=./signed_txs.rlp --input.env=./testdata/13/env.json --output.result=alloc_rlptx.json
./evm t8n --state.fork=London --input.alloc=./testdata/13/alloc.json --input.txs=./signed_txs.rlp --input.env=./testdata/13/env.json --output.result=alloc_rlptx.json
INFO [07-27|11:53:41.253] Trie dumping started root=e4b924..6aef61
INFO [12-07|04:30:12.425] Trie dumping started root=e4b924..6aef61
INFO [07-27|11:53:41.253] Trie dumping complete accounts=3 elapsed="128.445µs"
INFO [12-07|04:30:12.425] Trie dumping complete accounts=3 elapsed="70.684µs"
INFO [07-27|11:53:41.253] Wrote file file=alloc.json
INFO [12-07|04:30:12.425] Wrote file file=alloc.json
INFO [07-27|11:53:41.255] Wrote file file=alloc_rlptx.json
INFO [12-07|04:30:12.425] Wrote file file=alloc_rlptx.json
```
```
You might have noticed that the results from these two invocations were stored in two separate files.
You might have noticed that the results from these two invocations were stored in two separate files.
And we can now finally check that they match.
And we can now finally check that they match.
```
```