eth_call

立即执行一个消息调用，无需在区块链上创建交易。

API请求

POST https://<network>.infura.io/v3/YOUR-PROJECT-ID

请求头：

Content-Type: application/json

请求参数：

• 消息调用对象，结构如下：
  • from：交易发起地址，可选
  • to：交易目标地址
  • gas：交易gas量，可选
  • gasPrice：交易gas价格，可选
  • value：交易发送金额，可选
  • data：交易附加数据，可选
• 区块参数，必须，可以是区块号，或者字符串"latest", "earliest" 或"pending"

请求示例：

JSON-RPC over HTTPS POST：

curl https://mainnet.infura.io/v3/YOUR-PROJECT-ID \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_call","params": [{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],"id":1}'

JSON-RPC over websockets：

wscat -c wss://mainnet.infura.io/ws/v3/YOUR-PROJECT-ID
>{"jsonrpc":"2.0","method":"eth_call","params": [{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],"id":1}

API响应

返回所调用合约方法的返回值。

响应结果示例：

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x"
}