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JSON RPC 错误类型

JSON RPC 标准错误码

错误码	错误消息	描述
-32700	解析错误	非 JSON 格式数据
-32600	请求错误	含有错误的请求值
-32601	请求服务方法错误	调用方法不存在或错误
-32602	非法参数	调用方法参数错误
-32603	内部错误	内部错误(NotReady)
-32003	查询类错误	见示例
-32006	交易认证类错误	见示例
-32099	请求超时	见示例

错误示例

交易错误

// request 发送交易
curl -X POST --data '{"jsonrpc":"2.0","method":"sendRawTransaction","params":["..."],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32006,
    "message": "InvalidUntilBlock" //交易valid_until_block过时.
  }
}

// request 发送交易
curl -X POST --data '{"jsonrpc":"2.0","method":"sendRawTransaction","params":["..."],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32006,
    "message": "Dup" //重复交易
  }
}

// request 发送交易
curl -X POST --data '{"jsonrpc":"2.0","method":"sendRawTransaction","params":["..."],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32006,
    "message": "InvalidNonce" //非法nonce
  }
}

// request 发送交易
curl -X POST --data '{"jsonrpc":"2.0","method":"sendRawTransaction","params":["..."],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32006,
    "message": "Busy" //处理交易繁忙
  }
}

// request 发送交易
curl -X POST --data '{"jsonrpc":"2.0","method":"sendRawTransaction","params":["..."],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32006,
    "message": "BadSig" //签名错误
  }
}

// request 发送交易
curl -X POST --data '{"jsonrpc":"2.0","method":"sendRawTransaction","params":["..."],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32603,
    "message": "NotReady" //内部错误
  }
}

请求超时

// request 发送交易
curl -X POST --data '{"jsonrpc":"2.0","method":"sendRawTransaction","params":["..."],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32099,
    "message": "System time out, please resend"
  }
}

请求错误

// request 应发送POST请求，而不是GET请求
curl -X GET -d '{"jsonrpc":"2.0","method":"blockNumber","params":[],"id":"1"}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": "1",
  "error": {
    "code": -32600,
    "message": "Invalid request"
  }
}

调用方法错误

// request
curl -X POST --data '{"jsonrpc":"2.0","method":"peerCount","params":[],"id":74}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": "74",
  "error": {
    "code": -32601,
    "message": "Method not found"
  }
}

非法参数

// request 参数不能是十进制整数,需要是十六进制
curl -X POST --data '{"jsonrpc":"2.0","method":"getBlockByNumber","params":[249, true],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "error": {
    "code": -32602,
    "message": "Invalid params: invalid type: integer `249`, expected a hex block number or 'latest', 'earliest'."
  }
}

// request 参数个数不正确
curl -X POST -d '{"jsonrpc":"2.0","method":"getTransaction","params":["0x0063187e6a84ae731cf9",true],"id":2}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 2,
  "error": {
    "code": -32602,
    "message": "Invalid JSON-RPC params length"
  }
}

其他错误信息

// request 交易个数为０或者地址不正确
curl -X POST --data '{"jsonrpc":"2.0","method":"getTransactionCount","params":["5b073e9233944b5e729e46d618f0d8edf3d9c342",2],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x0"
}

// request 没有部署合约
curl -X POST --data '{"jsonrpc":"2.0","method":"getCode","params":["ea4f6bc98b456ef085da5c424db710489848cab9",35],"id":1}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 1,
  "result": null
}

// request 高度未达到
curl -X POST -d '{"jsonrpc":"2.0","method":"getBlockByNumber","params":[99999,true],"id":2}' 127.0.0.1:1337 | jq

// Result
{
  "jsonrpc": "2.0",
  "id": 2,
  "result": null
}

参考文档:

1. JSON RPC specification

2. Ethereum wiki/JSON RPC Error Codes Improvement Proposal