Request Blockchain RPC service

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Request Blockchain RPC service

最后更新时间：2023-09-11 16:29:27

1. Select the Application that you want to use, and click View details.
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 2. Move to the bottom of the page, and configure the IP/Domain whitelist  (Note: Without a whitelist, all IP addresses can use this token to call  the RPC service. Adding a whitelist allows only the IP addresses in the  whitelist to use this token to call the RPC service).
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2.1 Add the IP/Domain whitelist: Enter the IP/Domain in the input box, and click the Add button.
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2.2 Remove the IP/Domain whitelist: Click the cancel button for the corresponding IP/Domain in the whitelist.
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  3. Select the chain service, network, and other information you want to use, such as Mainnet in Ethereum.
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 4. Call the RPC service
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4.1 Invoke the RPC service using command-line commands: copy the command in the example and paste it to the whitelist machine, then press Enter to execute it using curl/wscat commands.
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4.2 Invoke the RPC service using code: Copy the RPC invocation address in the NETWORK ENDPOINTS and connect to it using HTTP or HTTPS.
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Demo：
package test
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import (
	"context"
	"fmt"
	"github.com/ethereum/go-ethereum"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/ethclient"
	"log"
	"testing"
)
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func Test_ws(t *testing.T) {
	chainUrl := ""
	client, err := ethclient.Dial(chainUrl)
	if err != nil {
		log.Fatal(err)
	}
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	query := ethereum.FilterQuery{}
	logs := make(chan types.Log)
	sub, err := client.SubscribeFilterLogs(context.Background(), query, logs)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("sub: %+v\\n", sub)
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	for {
		select {
		case err := <-sub.Err():
			fmt.Printf("err: %+v", err)
		case vLog := <-logs:
			fmt.Printf("%+v\\n", vLog.BlockNumber)
		}
	}
	fmt.Printf("client: %+v", client)
}
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func Test_http(t *testing.T) {
	chainUrl := ""
	client, err := ethclient.Dial(chainUrl)
	if err != nil {
		log.Fatal(err)
	}
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	height, err := client.BlockNumber(context.Background())
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("block height: %+v\\n", height)
	fmt.Printf("client: %+v", client)
}
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