Web3 开发实战：用 Foundry 高效探索以太坊区块链

寻月隐君
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Web3开发实战：用Foundry高效探索以太坊区块链Web3时代的到来，让以太坊区块链开发成为开发者关注的热点。Foundry作为一款强大的Solidity开发工具集，凭借其命令行工具cast，为开发者提供了查询区块链数据、调试交易和分析智能合约的高效途径。本文通过一系列实操案例

# Web3 开发实战：用 Foundry 高效探索以太坊区块链

Web3 时代的到来，让以太坊区块链开发成为开发者关注的热点。Foundry 作为一款强大的 Solidity 开发工具集，凭借其命令行工具 cast，为开发者提供了查询区块链数据、调试交易和分析智能合约的高效途径。本文通过一系列实操案例，带你走进 Web3 开发的实战场景，探索如何用 Foundry 查询以太坊区块、交易详情、事件日志，并进行交易模拟，助力你在 Web3 开发中游刃有余！

本文详细介绍了 Foundry 的 cast 命令在以太坊开发中的多种应用，包括查询最新区块高度、区块详情、交易收据、Gas 单价，以及解析合约调用数据、事件签名和函数选择器等功能。通过具体案例，展示了从环境变量配置到 JSON 数据格式化，再到交易模拟执行的完整流程。文章还介绍了如何通过 cast run 调试交易调用栈，为 Web3 开发者提供实用参考，助力开发高效的去中心化应用。

## 实操

### 查询最新区块号（十六进制）

**通过 `export ETH_RPC_URL` 设置环境变量，让后续的 `cast` 命令自动使用该 RPC 节点，无需重复指定 `--rpc-url`。**

```bash
export ETH_RPC_URL="**************************************************************
echo $ETH_RPC_URL
*************************************************************
cast rpc eth_blockNumber
"0x7f93c9"

cast rpc eth_blockNumber
"0x95075b"
```

### 查询当前以太坊网络的最新区块高度（十进制格式）

```bash
cast block-number
8360917

# cast block-number
cast block-number

21914148
```

### 查询以太坊区块链上指定高度的区块详情

```bash
cast block 8360917

cast block 9766752

baseFeePerGas        7
difficulty           2
extraData            0x010000753003f85c47000c8eaa00000000000000000000000000000000000000c11e60141cf73be3d65bddbb95688e2465691424b881a7cd71c8560c2200d5480f35bcad7d1bd50a0ecac7ba68d7ff26bf6f059fde74dfd159a542faf39edc4600
gasLimit             2000000000
gasUsed              21000
hash                 0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f
logsBloom            0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
miner                0x0000000000000000000000000000000000000000
mixHash              0x0000000000000000000000000000000000000000000000000000000000000000
nonce                0x0000000000000000
number               9766752
parentHash           0xaff11e9fd37dcc9ff6e3799f307ea81d6ed308e7ef29aa41ca40301ed485e38a
parentBeaconRoot     
transactionsRoot     0x27cecda093398159176bb88196189432b283fa6f75494ed72d6aa4af9e7319a6
receiptsRoot         0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2
sha3Uncles           0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347
size                 721
stateRoot            0x7e231fb86f75067ee6b5db48d60fb13585461aba09ee7fae9201484a8578f0aa
timestamp            1740373647 (Mon, 24 Feb 2025 05:07:27 +0000)
withdrawalsRoot      
totalDifficulty      19533505
blobGasUsed          
excessBlobGas        
requestsHash         
transactions:        [
 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913
]
```

### 查询以太坊区块链上指定交易哈希的完整详细信息

```bash
# cast tx
cast tx 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913

blockHash            0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f
blockNumber          9766752
from                 0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B
transactionIndex     0
effectiveGasPrice    1361240798

gas                  21000
gasPrice             1361240798
hash                 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913
input                0x
nonce                8584261
r                    0x43f3d959986d09dddff767cbfcc4a49641c04494533a78f40385106240de571a
s                    0x0cb55a2d14a186798c5f71432e66d6be8d1b9c3ce7ddb2ab8e30703147bb9850
to                   0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B
type                 0
v                    1
value                100
```

### 获取指定以太坊交易的 **收据（receipt）信息**

```bash
cast receipt 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913

blockHash            0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f
blockNumber          9766752
contractAddress      
cumulativeGasUsed    21000
effectiveGasPrice    1361240798
from                 0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B
gasUsed              21000
logs                 []
logsBloom            0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
root                 
status               1 (success)
transactionHash      0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913
transactionIndex     0
type                 0
blobGasPrice         
blobGasUsed          
to                   0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B
```

### 查询特定以太坊交易的 `gasPrice`（Gas 单价）

```bash
cast tx 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913 gasPrice
1361240798
```

### 查询交易 **实际生效的 Gas 单价（effectiveGasPrice）**

```bash
cast receipt 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913 effectiveGasPrice
1361240798
```

### 获取交易 `0xa279` 的完整 JSON 格式数据

```bash
cast tx 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913 --json
{"type":"0x0","chainId":"0xe705","nonce":"0x82fc45","gasPrice":"0x5122e2de","gas":"0x5208","to":"0x228466f2c715cbec05deabfac040ce3619d7cf0b","value":"0x64","input":"0x","r":"0x43f3d959986d09dddff767cbfcc4a49641c04494533a78f40385106240de571a","s":"0xcb55a2d14a186798c5f71432e66d6be8d1b9c3ce7ddb2ab8e30703147bb9850","v":"0x1ce2e","hash":"0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913","blockHash":"0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f","blockNumber":"0x950760","transactionIndex":"0x0","from":"0x228466f2c715cbec05deabfac040ce3619d7cf0b"}
```

### 获取交易 `0x847e` 的完整 JSON 数据并使用 `jq` 格式化输出

```bash
cast tx 0x847ec42998f5b0fb603ff909b9c9dc575d6876a89c8f30ce9343ce8062d76e88 --json | jq
{
  "type": "0x2",
  "chainId": "0x1",
  "nonce": "0x51177",
  "gas": "0x3bd5a",
  "maxFeePerGas": "0x24ca2ff8",
  "maxPriorityFeePerGas": "0x1d3ed",
  "to": "0x68d3a973e7272eb388022a5c6518d9b2a2e66fbf",
  "value": "0x14e6235",
  "accessList": [],
  "input": "0xa00000000000000000000000000000006ac6b053a2858bea8ad758db680198c16e523184000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040ba76f00000000000000000000000000000000000000000000000cbf18a462d9f5c1d1000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
  "r": "0x7046b9d4144e7e031f14d1cf48e624ca082a647a1dff2a4b138946c5bf604813",
  "s": "0xe6de3584212a453feab79484cf04c4e7737b128c351e97febdfea7f28b91278",
  "yParity": "0x0",
  "v": "0x0",
  "hash": "0x847ec42998f5b0fb603ff909b9c9dc575d6876a89c8f30ce9343ce8062d76e88",
  "blockHash": "0xa742ebfe24abfe4b611a6d3152a15c7fd6e3eb5dbd85bf91d90ddc9579e17954",
  "blockNumber": "0x14e6235",
  "transactionIndex": "0xa5",
  "from": "0x448166a91e7bc50d0ac720c2fbed29e0963f5af8",
  "gasPrice": "0x24ca2ff8"
}
```

### 获取交易 `0x847e` 的 **input 数据**（即合约调用的原始 ABI 编码数据）

```bash
cast tx 0x847ec42998f5b0fb603ff909b9c9dc575d6876a89c8f30ce9343ce8062d76e88 input
0xa00000000000000000000000000000006ac6b053a2858bea8ad758db680198c16e523184000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040ba76f00000000000000000000000000000000000000000000000cbf18a462d9f5c1d1000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48
```

### 解析并美化显示给定的 calldata

```bash
cast pretty-calldata 0xa9059cbb0000000000000000000000005494befe3ce72a2ca0001fe0ed0c55b42f8c358f000000000000000000000000000000000000000000000000000000000836d54c

Possible methods:
 - transfer(address,uint256)
 ------------
 [000]: 0000000000000000000000005494befe3ce72a2ca0001fe0ed0c55b42f8c358f
 [020]: 000000000000000000000000000000000000000000000000000000000836d54c
```

### 解码给定的 calldata

```bash
cast 4byte-decode 0xa9059cbb0000000000000000000000005494befe3ce72a2ca0001fe0ed0c55b42f8c358f000000000000000000000000000000000000000000000000000000000836d54c
1) "transfer(address,uint256)"
0x5494befe3CE72A2CA0001fE0Ed0C55B42F8c358f
137811276 [1.378e8]
```

### 计算 `transferFrom(address,address,uint256)` 函数的 Keccak-256 哈希（即函数选择器）

```bash
cast keccak 'transferFrom(address,address,uint256)'
0x23b872dd7302113369cda2901243429419bec145408fa8b352b3dd92b66c680b
```

### 获取 `transferFrom(address,address,uint256)` 函数的 **4字节函数选择器**（function selector）

```bash
cast sig "transferFrom(address,address,uint256)"
0x23b872dd
```

### 查询交易 `0x2258` 的收据信息

```bash
cast receipt 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7

blockHash            0x3da09c83e6beee5b50540a0fd330a1b3c5f7528bc8f5be43ef1c7fd6df6851fa
blockNumber          21915751
contractAddress      
cumulativeGasUsed    6566577
effectiveGasPrice    2679745233
from                 0x28C6c06298d514Db089934071355E5743bf21d60
gasUsed              62272
logs                 [{"address":"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x00000000000000000000000028c6c06298d514db089934071355e5743bf21d60","0x000000000000000000000000c1af05a7a4f27cd1b61de823ea31ab5049b38ea8"],"data":"0x0000000000000000000000000000000000000000000000000000000de5eaacc5","blockHash":"0x3da09c83e6beee5b50540a0fd330a1b3c5f7528bc8f5be43ef1c7fd6df6851fa","blockNumber":"0x14e6867","blockTimestamp":"0x67bc518f","transactionHash":"0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7","transactionIndex":"0x15","logIndex":"0xc3","removed":false}]
logsBloom            0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000800000000000000a000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000010000000000000000000000000000000000000000000000000010008000000000000000000000000000000200000000000000000000000000000000000000000020000000000000002000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
root                 
status               1 (success)
transactionHash      0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7
transactionIndex     21
type                 2
blobGasPrice         
blobGasUsed          
to                   0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
```

### 获取交易 `0x2258` 的事件日志（logs）

```bash
cast receipt 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7 logs
[
 
 address: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
 blockHash: 0x3da09c83e6beee5b50540a0fd330a1b3c5f7528bc8f5be43ef1c7fd6df6851fa
 blockNumber: 21915751
 data: 0x0000000000000000000000000000000000000000000000000000000de5eaacc5
 logIndex: 195
 removed: false
 topics: [
  0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
  0x00000000000000000000000028c6c06298d514db089934071355e5743bf21d60
  0x000000000000000000000000c1af05a7a4f27cd1b61de823ea31ab5049b38ea8
 ]
 transactionHash: 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7
 transactionIndex: 21
]
```

### 解码事件签名哈希

```bash
# cast 4byte-event
cast 4byte-event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
Transfer(address,address,uint256)
```

### **调试/模拟执行**交易

```bash
# Run 调用栈 blocksec tenderly
cast run 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7
Executing previous transactions from the block.
Traces:
  [40652] 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48::transfer(0xc1AF05a7A4F27Cd1b61De823EA31aB5049b38eA8, 59691936965 [5.969e10])
    ├─ [33363] 0x43506849D7C04F9138D1A2050bbF3A0c054402dd::transfer(0xc1AF05a7A4F27Cd1b61De823EA31aB5049b38eA8, 59691936965 [5.969e10]) [delegatecall]
    │   ├─ emit Transfer(param0: 0x28C6c06298d514Db089934071355E5743bf21d60, param1: 0xc1AF05a7A4F27Cd1b61De823EA31aB5049b38eA8, param2: 59691936965 [5.969e10])
    │   └─ ← [Return] 0x0000000000000000000000000000000000000000000000000000000000000001
    └─ ← [Return] 0x0000000000000000000000000000000000000000000000000000000000000001

Transaction successfully executed.
Gas used: 62272
```

## 总结

Foundry 的 cast 命令为 Web3 开发者提供了从查询到调试的全面工具支持，显著提升了以太坊区块链开发的效率。本文通过实战案例展示了其在区块查询、交易分析和事件日志解析中的实用功能，为开发者深入理解智能合约提供了清晰指引。在 Web3 开发的大潮中，掌握 Foundry 将助你事半功倍。快来结合参考资源动手实践，开启你的 Web3 开发新篇章！

## 参考

- <https://www.youtube.com/watch?v=EXYeltwvftw&t=212s>
- https://soliditylang.org/
- https://solidity-by-example.org/
- https://docs.soliditylang.org/en/latest/
- https://book.getfoundry.sh/

Web3 开发实战：用 Foundry 高效探索以太坊区块链

实操

查询最新区块号（十六进制）

通过 export ETH_RPC_URL 设置环境变量，让后续的 cast 命令自动使用该 RPC 节点，无需重复指定 --rpc-url。

export ETH_RPC_URL="**************************************************************
echo $ETH_RPC_URL
*************************************************************
cast rpc eth_blockNumber
"0x7f93c9"

cast rpc eth_blockNumber
"0x95075b"

查询当前以太坊网络的最新区块高度（十进制格式）

cast block-number
8360917

# cast block-number
cast block-number

21914148

查询以太坊区块链上指定高度的区块详情

cast block 8360917

cast block 9766752

baseFeePerGas        7
difficulty           2
extraData            0x010000753003f85c47000c8eaa00000000000000000000000000000000000000c11e60141cf73be3d65bddbb95688e2465691424b881a7cd71c8560c2200d5480f35bcad7d1bd50a0ecac7ba68d7ff26bf6f059fde74dfd159a542faf39edc4600
gasLimit             2000000000
gasUsed              21000
hash                 0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f
logsBloom            0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
miner                0x0000000000000000000000000000000000000000
mixHash              0x0000000000000000000000000000000000000000000000000000000000000000
nonce                0x0000000000000000
number               9766752
parentHash           0xaff11e9fd37dcc9ff6e3799f307ea81d6ed308e7ef29aa41ca40301ed485e38a
parentBeaconRoot     
transactionsRoot     0x27cecda093398159176bb88196189432b283fa6f75494ed72d6aa4af9e7319a6
receiptsRoot         0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2
sha3Uncles           0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347
size                 721
stateRoot            0x7e231fb86f75067ee6b5db48d60fb13585461aba09ee7fae9201484a8578f0aa
timestamp            1740373647 (Mon, 24 Feb 2025 05:07:27 +0000)
withdrawalsRoot      
totalDifficulty      19533505
blobGasUsed          
excessBlobGas        
requestsHash         
transactions:        [
 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913
]

查询以太坊区块链上指定交易哈希的完整详细信息

# cast tx
cast tx 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913

blockHash            0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f
blockNumber          9766752
from                 0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B
transactionIndex     0
effectiveGasPrice    1361240798

gas                  21000
gasPrice             1361240798
hash                 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913
input                0x
nonce                8584261
r                    0x43f3d959986d09dddff767cbfcc4a49641c04494533a78f40385106240de571a
s                    0x0cb55a2d14a186798c5f71432e66d6be8d1b9c3ce7ddb2ab8e30703147bb9850
to                   0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B
type                 0
v                    1
value                100

获取指定以太坊交易的收据（receipt）信息

cast receipt 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913

blockHash            0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f
blockNumber          9766752
contractAddress      
cumulativeGasUsed    21000
effectiveGasPrice    1361240798
from                 0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B
gasUsed              21000
logs                 []
logsBloom            0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
root                 
status               1 (success)
transactionHash      0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913
transactionIndex     0
type                 0
blobGasPrice         
blobGasUsed          
to                   0x228466F2C715CbEC05dEAbfAc040ce3619d7CF0B

查询特定以太坊交易的 `gasPrice`（Gas 单价）

cast tx 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913 gasPrice
1361240798

查询交易实际生效的 Gas 单价（effectiveGasPrice）

cast receipt 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913 effectiveGasPrice
1361240798

获取交易 `0xa279` 的完整 JSON 格式数据

cast tx 0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913 --json
{"type":"0x0","chainId":"0xe705","nonce":"0x82fc45","gasPrice":"0x5122e2de","gas":"0x5208","to":"0x228466f2c715cbec05deabfac040ce3619d7cf0b","value":"0x64","input":"0x","r":"0x43f3d959986d09dddff767cbfcc4a49641c04494533a78f40385106240de571a","s":"0xcb55a2d14a186798c5f71432e66d6be8d1b9c3ce7ddb2ab8e30703147bb9850","v":"0x1ce2e","hash":"0xa2797bab1ce8307072cff59ac03c3aef8614e0b9df491d253ea3de954df5f913","blockHash":"0x09d4ff5bcf56f63f8fdd6b15b1f33f187ff7b1d9df6ff4bb6e6e294a7830328f","blockNumber":"0x950760","transactionIndex":"0x0","from":"0x228466f2c715cbec05deabfac040ce3619d7cf0b"}

获取交易 `0x847e` 的完整 JSON 数据并使用 `jq` 格式化输出

cast tx 0x847ec42998f5b0fb603ff909b9c9dc575d6876a89c8f30ce9343ce8062d76e88 --json | jq
{
  "type": "0x2",
  "chainId": "0x1",
  "nonce": "0x51177",
  "gas": "0x3bd5a",
  "maxFeePerGas": "0x24ca2ff8",
  "maxPriorityFeePerGas": "0x1d3ed",
  "to": "0x68d3a973e7272eb388022a5c6518d9b2a2e66fbf",
  "value": "0x14e6235",
  "accessList": [],
  "input": "0xa00000000000000000000000000000006ac6b053a2858bea8ad758db680198c16e523184000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040ba76f00000000000000000000000000000000000000000000000cbf18a462d9f5c1d1000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
  "r": "0x7046b9d4144e7e031f14d1cf48e624ca082a647a1dff2a4b138946c5bf604813",
  "s": "0xe6de3584212a453feab79484cf04c4e7737b128c351e97febdfea7f28b91278",
  "yParity": "0x0",
  "v": "0x0",
  "hash": "0x847ec42998f5b0fb603ff909b9c9dc575d6876a89c8f30ce9343ce8062d76e88",
  "blockHash": "0xa742ebfe24abfe4b611a6d3152a15c7fd6e3eb5dbd85bf91d90ddc9579e17954",
  "blockNumber": "0x14e6235",
  "transactionIndex": "0xa5",
  "from": "0x448166a91e7bc50d0ac720c2fbed29e0963f5af8",
  "gasPrice": "0x24ca2ff8"
}

获取交易 `0x847e` 的 input 数据（即合约调用的原始 ABI 编码数据）

cast tx 0x847ec42998f5b0fb603ff909b9c9dc575d6876a89c8f30ce9343ce8062d76e88 input
0xa00000000000000000000000000000006ac6b053a2858bea8ad758db680198c16e523184000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040ba76f00000000000000000000000000000000000000000000000cbf18a462d9f5c1d1000000000000000000000000a0b86991c6218b36c1d19d4a2e9eb0ce3606eb48

解析并美化显示给定的 calldata

cast pretty-calldata 0xa9059cbb0000000000000000000000005494befe3ce72a2ca0001fe0ed0c55b42f8c358f000000000000000000000000000000000000000000000000000000000836d54c

 Possible methods:
 - transfer(address,uint256)
 ------------
 [000]: 0000000000000000000000005494befe3ce72a2ca0001fe0ed0c55b42f8c358f
 [020]: 000000000000000000000000000000000000000000000000000000000836d54c

解码给定的 calldata

cast 4byte-decode 0xa9059cbb0000000000000000000000005494befe3ce72a2ca0001fe0ed0c55b42f8c358f000000000000000000000000000000000000000000000000000000000836d54c
1) "transfer(address,uint256)"
0x5494befe3CE72A2CA0001fE0Ed0C55B42F8c358f
137811276 [1.378e8]

计算 `transferFrom(address,address,uint256)` 函数的 Keccak-256 哈希（即函数选择器）

cast keccak 'transferFrom(address,address,uint256)'
0x23b872dd7302113369cda2901243429419bec145408fa8b352b3dd92b66c680b

获取 `transferFrom(address,address,uint256)` 函数的 4字节函数选择器（function selector）

cast sig "transferFrom(address,address,uint256)"
0x23b872dd

查询交易 `0x2258` 的收据信息

cast receipt 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7

blockHash            0x3da09c83e6beee5b50540a0fd330a1b3c5f7528bc8f5be43ef1c7fd6df6851fa
blockNumber          21915751
contractAddress      
cumulativeGasUsed    6566577
effectiveGasPrice    2679745233
from                 0x28C6c06298d514Db089934071355E5743bf21d60
gasUsed              62272
logs                 [{"address":"0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48","topics":["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef","0x00000000000000000000000028c6c06298d514db089934071355e5743bf21d60","0x000000000000000000000000c1af05a7a4f27cd1b61de823ea31ab5049b38ea8"],"data":"0x0000000000000000000000000000000000000000000000000000000de5eaacc5","blockHash":"0x3da09c83e6beee5b50540a0fd330a1b3c5f7528bc8f5be43ef1c7fd6df6851fa","blockNumber":"0x14e6867","blockTimestamp":"0x67bc518f","transactionHash":"0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7","transactionIndex":"0x15","logIndex":"0xc3","removed":false}]
logsBloom            0x0000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000800000000000000a000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002000010000000000000000000000000000000000000000000000000010008000000000000000000000000000000200000000000000000000000000000000000000000020000000000000002000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
root                 
status               1 (success)
transactionHash      0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7
transactionIndex     21
type                 2
blobGasPrice         
blobGasUsed          
to                   0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48

获取交易 `0x2258` 的事件日志（logs）

cast receipt 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7 logs
[

 address: 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48
 blockHash: 0x3da09c83e6beee5b50540a0fd330a1b3c5f7528bc8f5be43ef1c7fd6df6851fa
 blockNumber: 21915751
 data: 0x0000000000000000000000000000000000000000000000000000000de5eaacc5
 logIndex: 195
 removed: false
 topics: [
  0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
  0x00000000000000000000000028c6c06298d514db089934071355e5743bf21d60
  0x000000000000000000000000c1af05a7a4f27cd1b61de823ea31ab5049b38ea8
 ]
 transactionHash: 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7
 transactionIndex: 21
]

解码事件签名哈希

# cast 4byte-event
cast 4byte-event 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef
Transfer(address,address,uint256)

调试/模拟执行交易

# Run 调用栈 blocksec tenderly
cast run 0x225853c513c75a4276979841a480ad1856bc649c496c16765107cb5d62d1def7
Executing previous transactions from the block.
Traces:
  [40652] 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48::transfer(0xc1AF05a7A4F27Cd1b61De823EA31aB5049b38eA8, 59691936965 [5.969e10])
    ├─ [33363] 0x43506849D7C04F9138D1A2050bbF3A0c054402dd::transfer(0xc1AF05a7A4F27Cd1b61De823EA31aB5049b38eA8, 59691936965 [5.969e10]) [delegatecall]
    │   ├─ emit Transfer(param0: 0x28C6c06298d514Db089934071355E5743bf21d60, param1: 0xc1AF05a7A4F27Cd1b61De823EA31aB5049b38eA8, param2: 59691936965 [5.969e10])
    │   └─ ← [Return] 0x0000000000000000000000000000000000000000000000000000000000000001
    └─ ← [Return] 0x0000000000000000000000000000000000000000000000000000000000000001

Transaction successfully executed.
Gas used: 62272

总结

参考

原创
学分: 0
分类: Solidity
标签: Web3 Foundry cast

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Web3 开发实战：用 Foundry 高效探索以太坊区块链

Web3 开发实战：用 Foundry 高效探索以太坊区块链

实操

查询最新区块号（十六进制）

查询当前以太坊网络的最新区块高度（十进制格式）

查询以太坊区块链上指定高度的区块详情

查询以太坊区块链上指定交易哈希的完整详细信息

获取指定以太坊交易的收据（receipt）信息

查询特定以太坊交易的 `gasPrice`（Gas 单价）

查询交易实际生效的 Gas 单价（effectiveGasPrice）

获取交易 `0xa279` 的完整 JSON 格式数据

获取交易 `0x847e` 的完整 JSON 数据并使用 `jq` 格式化输出

获取交易 `0x847e` 的 input 数据（即合约调用的原始 ABI 编码数据）

解析并美化显示给定的 calldata

解码给定的 calldata

计算 `transferFrom(address,address,uint256)` 函数的 Keccak-256 哈希（即函数选择器）

获取 `transferFrom(address,address,uint256)` 函数的 4字节函数选择器（function selector）

查询交易 `0x2258` 的收据信息

获取交易 `0x2258` 的事件日志（logs）

解码事件签名哈希

调试/模拟执行交易

总结

参考

0 条评论

专栏: Web3

文章目录

Web3 开发实战：用 Foundry 高效探索以太坊区块链

Web3 开发实战：用 Foundry 高效探索以太坊区块链

实操

查询最新区块号（十六进制）

查询当前以太坊网络的最新区块高度（十进制格式）

查询以太坊区块链上指定高度的区块详情

查询以太坊区块链上指定交易哈希的完整详细信息

获取指定以太坊交易的 收据（receipt）信息

查询特定以太坊交易的 gasPrice（Gas 单价）

查询交易 实际生效的 Gas 单价（effectiveGasPrice）

获取交易 0xa279 的完整 JSON 格式数据

获取交易 0x847e 的完整 JSON 数据并使用 jq 格式化输出

获取交易 0x847e 的 input 数据（即合约调用的原始 ABI 编码数据）

解析并美化显示给定的 calldata

解码给定的 calldata

计算 transferFrom(address,address,uint256) 函数的 Keccak-256 哈希（即函数选择器）

获取 transferFrom(address,address,uint256) 函数的 4字节函数选择器（function selector）

查询交易 0x2258 的收据信息

获取交易 0x2258 的事件日志（logs）

解码事件签名哈希

调试/模拟执行交易

总结

参考

0 条评论

专栏: Web3

文章目录

获取指定以太坊交易的收据（receipt）信息

查询特定以太坊交易的 `gasPrice`（Gas 单价）

查询交易实际生效的 Gas 单价（effectiveGasPrice）

获取交易 `0xa279` 的完整 JSON 格式数据

获取交易 `0x847e` 的完整 JSON 数据并使用 `jq` 格式化输出

获取交易 `0x847e` 的 input 数据（即合约调用的原始 ABI 编码数据）

计算 `transferFrom(address,address,uint256)` 函数的 Keccak-256 哈希（即函数选择器）

获取 `transferFrom(address,address,uint256)` 函数的 4字节函数选择器（function selector）

查询交易 `0x2258` 的收据信息

获取交易 `0x2258` 的事件日志（logs）