`go-ethereum` 的 `client.BlockByHash()` 方法报错 “not found”。

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英文:

`go-ethereum` client.BlockByHash() gives error "not found"

问题

我有以下代码用于订阅新出现的区块:

package main

import (
	"context"
	"fmt"
	"log"

	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/ethclient"
)

func main() {
	client, err := ethclient.Dial("wss://mainnet.infura.io/ws/v3/APIKEY")
	if err != nil {
		log.Fatal(err)
	}

	headers := make(chan *types.Header)
	sub, err := client.SubscribeNewHead(context.Background(), headers)
	if err != nil {
		log.Fatal(err)
	}

	for {
		select {
		case err := <-sub.Err():
			log.Fatal(err)
		case header := <-headers:
			fmt.Println(header.Hash().Hex()) // 0xbc10defa8dda384c96a17640d84de5578804945d347072e091b4e5f390ddea7f

			block, err := client.BlockByHash(context.Background(), header.Hash())
			if err != nil {
				log.Fatal(err)
			}

			fmt.Println(block.Hash().Hex())        // 0xbc10defa8dda384c96a17640d84de5578804945d347072e091b4e5f390ddea7f
			fmt.Println(block.Number().Uint64())   // 3477413
			fmt.Println(block.Time())              // 1529525947
			fmt.Println(block.Nonce())             // 130524141876765836
			fmt.Println(len(block.Transactions())) // 7
		}
	}
}

但是在这一行中:

block, err := client.BlockByHash(context.Background(), header.Hash())

我得到了错误:

2023/04/19 17:31:14 not found
exit status 1

它仍然在 fmt.Println(header.Hash().Hex()) 中打印出一个哈希值,所以我知道 infura 连接是正常的。

英文:

I have the following code for subscribing to new blocks as they appear:

package main

import (
	&quot;context&quot;
	&quot;fmt&quot;
	&quot;log&quot;

	&quot;github.com/ethereum/go-ethereum/core/types&quot;
	&quot;github.com/ethereum/go-ethereum/ethclient&quot;
)

func main() {
	client, err := ethclient.Dial(&quot;wss://mainnet.infura.io/ws/v3/APIKEY&quot;)
	if err != nil {
		log.Fatal(err)
	}

	headers := make(chan *types.Header)
	sub, err := client.SubscribeNewHead(context.Background(), headers)
	if err != nil {
		log.Fatal(err)
	}

	for {
		select {
		case err := &lt;-sub.Err():
			log.Fatal(err)
		case header := &lt;-headers:
			fmt.Println(header.Hash().Hex()) // 0xbc10defa8dda384c96a17640d84de5578804945d347072e091b4e5f390ddea7f

			block, err := client.BlockByHash(context.Background(), header.Hash())
			if err != nil {
				log.Fatal(err)
			}

			fmt.Println(block.Hash().Hex())        // 0xbc10defa8dda384c96a17640d84de5578804945d347072e091b4e5f390ddea7f
			fmt.Println(block.Number().Uint64())   // 3477413
			fmt.Println(block.Time())              // 1529525947
			fmt.Println(block.Nonce())             // 130524141876765836
			fmt.Println(len(block.Transactions())) // 7
		}
	}
}

But in the line

block, err := client.BlockByHash(context.Background(), header.Hash())

I get the error:

2023/04/19 17:31:14 not found
exit status 1

It still prints a hash in fmt.Println(header.Hash().Hex()) so I know the infura connection is working.

答案1

得分: 0

使用区块号代替哈希值。

block, err := client.BlockByNumber(context.Background(), header.Number)

函数header.Hash()并不返回区块的哈希值,而是返回区块头的哈希值。

英文:

Use block number instead of the hash.

block, err := client.BlockByNumber(context.Background(), header.Number)

The function header.Hash() does not return the block hash, but rather the hash of the header.

huangapple
  • 本文由 发表于 2023年4月20日 01:13:24
  • 转载请务必保留本文链接:https://go.coder-hub.com/76057191.html
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