getLatestBlockhash gRPC Method - Solana gRPC

Solana gRPC is included with Scale plans and up. Learn more on our pricing page.

参数

承诺

字符串

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PROCESSED

字符串

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CONFIRMED

字符串

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FINALIZED

字符串

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退货

插槽

字符串

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blockhash

字符串

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lastValidBlockHeight

字符串

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请求

1
包 main
2

3
import (
4
	"上下文"
5
	"crypto/tls"
6
	"fmt"
7
	“日志”
8
	“时间”
9

10
	pb "yellowstone"
11

12

13
	"google.golang.grpc"
14
	"google.golang.grpc"
15
	"google.golang.grpc"
16
	"google.golang.grpc"
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)
18

19
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
20
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
21
// endpoint will be: docs-demo.solana-mainnet.quiknode.pro:443  {443 is the port number for gRPC}
22
// token will be : abcde123456789
23

24
var (
25
	endpoint = "YOUR_QN_ENDPOINT:443"
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	token    = "您的令牌编号"
27
)
28

29
var kacp = keepalive.ClientParameters{
30
	Time:                10 * time.Second,
31
	Timeout:             time.Second,
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	PermitWithoutStream: true,
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}
34

35
type tokenAuth struct {
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	token 字符串
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}
38

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func (t tokenAuth) GetRequestMetadata(ctx context.Context, in ...string) (map[string]string, error) {
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	返回 map[字符串]字符串{
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		"x-token": t.token,
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	}, nil
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}
44

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func (tokenAuth) RequireTransportSecurity() bool {
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	返回 true
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}
48

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func main() {
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	opts := []grpc.DialOption{
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		grpc.WithTransportCredentials(凭证.NewTLS(&tls.配置{})),
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		grpc.WithKeepaliveParams(kacp)，
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		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.名称)),
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		grpc.WithPerRPCCredentials(tokenAuth{token: token}),
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	}
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	conn, err := grpc.NewClient(endpoint, opts...)
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	如果 err != nil {
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		log.Fatalf("连接失败：%v", err)
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	}
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	推迟 conn.关闭()
62

63
	client := pb.NewGeyserClient(conn)
64

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    ctx, 取消 := context.带超时(context.Background(), 10*时间.第二次)
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    推迟 取消()
67

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    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
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	如果 err != nil {
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		log.Fatalf("Failed to get latest blockhash: %v", err)
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	}
72

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	fmt.Printf("Latest Blockhash Information:\n")
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	fmt.Printf("  Blockhash: %+v\n", latestBlockHash)
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76
}
77

1
包 main
2

3
import (
4
	"上下文"
5
	"crypto/tls"
6
	"fmt"
7
	“日志”
8
	“时间”
9

10
	pb "yellowstone"
11

12

13
	"google.golang.grpc"
14
	"google.golang.grpc"
15
	"google.golang.grpc"
16
	"google.golang.grpc"
17
)
18

19
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
20
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
21
// endpoint will be: docs-demo.solana-mainnet.quiknode.pro:443  {443 is the port number for gRPC}
22
// token will be : abcde123456789
23

24
var (
25
	endpoint = "YOUR_QN_ENDPOINT:443"
26
	token    = "您的令牌编号"
27
)
28

29
var kacp = keepalive.ClientParameters{
30
	Time:                10 * time.Second,
31
	Timeout:             time.Second,
32
	PermitWithoutStream: true,
33
}
34

35
type tokenAuth struct {
36
	token 字符串
37
}
38

39
func (t tokenAuth) GetRequestMetadata(ctx context.Context, in ...string) (map[string]string, error) {
40
	返回 map[字符串]字符串{
41
		"x-token": t.token,
42
	}, nil
43
}
44

45
func (tokenAuth) RequireTransportSecurity() bool {
46
	返回 true
47
}
48

49
func main() {
50
	opts := []grpc.DialOption{
51
		grpc.WithTransportCredentials(凭证.NewTLS(&tls.配置{})),
52
		grpc.WithKeepaliveParams(kacp)，
53
		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.名称)),
54
		grpc.WithPerRPCCredentials(tokenAuth{token: token}),
55
	}
56

57
	conn, err := grpc.NewClient(endpoint, opts...)
58
	如果 err != nil {
59
		log.Fatalf("连接失败：%v", err)
60
	}
61
	推迟 conn.关闭()
62

63
	client := pb.NewGeyserClient(conn)
64

65
    ctx, 取消 := context.带超时(context.Background(), 10*时间.第二次)
66
    推迟 取消()
67

68
    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
69
	如果 err != nil {
70
		log.Fatalf("Failed to get latest blockhash: %v", err)
71
	}
72

73
	fmt.Printf("Latest Blockhash Information:\n")
74
	fmt.Printf("  Blockhash: %+v\n", latestBlockHash)
75

76
}
77

1
import Client, { CommitmentLevel } from "@triton-one/yellowstone-grpc";
2

3
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
4
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
5
// endpoint will be: https://docs-demo.solana-mainnet.quiknode.pro:443  {443 is the port number for gRPC}
6
// token will be : abcde123456789
7

8
const ENDPOINT = "https://YOUR_QN_ENDPOINT:443";
9
const TOKEN = "您的令牌编号";
10

11
async 函数 main() {
12
    const client = new Client(ENDPOINT, TOKEN, {
13
        grpcDefaultCompressionAlgorithm: 0, // 0 = gzip, 1 = zstd
14
    });
15
    await client.connect();
16

17
    const 承诺 = 承诺级别.已确认;
18

19
    试一试 {
20
        const response = await client.getLatestBlockhash(commitment);
21
        console.log(`Latest Blockhash: ${JSON.stringify(response, null, 2)}`);
22
    } catch (error) {
23
        console.error("Error fetching latest blockhash:", error);
24
    }
25
}
26

27
主()
28
    .catch((err) => {
29
        控制台.错误("未处理的错误：", err);
30
        流程.退出(1);
31
    });
32

1
import Client, { CommitmentLevel } from "@triton-one/yellowstone-grpc";
2

3
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
4
// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
5
// endpoint will be: https://docs-demo.solana-mainnet.quiknode.pro:443  {443 is the port number for gRPC}
6
// token will be : abcde123456789
7

8
const ENDPOINT = "https://YOUR_QN_ENDPOINT:443";
9
const TOKEN = "您的令牌编号";
10

11
async 函数 main() {
12
    const client = new Client(ENDPOINT, TOKEN, {
13
        grpcDefaultCompressionAlgorithm: 0, // 0 = gzip, 1 = zstd
14
    });
15
    await client.connect();
16

17
    const 承诺 = 承诺级别.已确认;
18

19
    试一试 {
20
        const response = await client.getLatestBlockhash(commitment);
21
        console.log(`Latest Blockhash: ${JSON.stringify(response, null, 2)}`);
22
    } catch (error) {
23
        console.error("Error fetching latest blockhash:", error);
24
    }
25
}
26

27
主()
28
    .catch((err) => {
29
        控制台.错误("未处理的错误：", err);
30
        流程.退出(1);
31
    });
32

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