getLatestBlockhash gRPC Method - Solana gRPC

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

पैरामीटर

commitment

डोरी

लोड हो रहा है...

PROCESSED

डोरी

लोड हो रहा है...

CONFIRMED

डोरी

लोड हो रहा है...

FINALIZED

डोरी

लोड हो रहा है...

रिटर्न

slot

डोरी

लोड हो रहा है...

blockhash

डोरी

लोड हो रहा है...

lastValidBlockHeight

डोरी

लोड हो रहा है...

अनुरोध

1
पैकेज मुख्य
2

3
आयात (
4
	"प्रसंग"
5
	"क्रिप्टो/टीएलएस"
6
	"एफएमटी"
7
	"लकड़ी का लट्ठा"
8
	"समय"
9

10
	pb "yellowstone/proto"
11

12

13
	"google.golang.org/ grpc "
14
	"google.golang.org/ grpc /साख"
15
	"google.golang.org/grpc/encoding/gzip"
16
	"google.golang.org/grpc/keepalive"
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    = "YOUR_TOKEN_NUMBER"
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
टोकन स्ट्रिंग
37
}
38

39
func (t tokenAuth) GetRequestMetadata(ctx context.Context, in ...string) (map[string]string, error) {
40
	वापस करना मानचित्र [ स्ट्रिंग ] स्ट्रिंग {
41
		"x-token": t.token,
42
	} , शून्य
43
}
44

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

49
समारोह मुख्य ( ) {
50
	opts := []grpc.DialOption{
51
grpc ( credentials.NewTLS ( & tls.Config { } ) )​​​​​​​
52
		grpc.WithKeepaliveParams(kacp),
53
		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.Name)),
54
		grpc.WithPerRPCCredentials(tokenAuth{token: token}),
55
	}
56

57
	conn, err := grpc.NewClient(endpoint, opts...)
58
	यदि त्रुटि != शून्य {
59
		log.Fatalf("Failed to connect: %v", err)
60
	}
61
	कनेक्शन स्थगित करें । बंद करें ( )
62

63
	client := pb.NewGeyserClient(conn)
64

65
    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
66
    defer cancel()
67

68
    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
69
	यदि त्रुटि != शून्य {
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
पैकेज मुख्य
2

3
आयात (
4
	"प्रसंग"
5
	"क्रिप्टो/टीएलएस"
6
	"एफएमटी"
7
	"लकड़ी का लट्ठा"
8
	"समय"
9

10
	pb "yellowstone/proto"
11

12

13
	"google.golang.org/ grpc "
14
	"google.golang.org/ grpc /साख"
15
	"google.golang.org/grpc/encoding/gzip"
16
	"google.golang.org/grpc/keepalive"
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    = "YOUR_TOKEN_NUMBER"
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
टोकन स्ट्रिंग
37
}
38

39
func (t tokenAuth) GetRequestMetadata(ctx context.Context, in ...string) (map[string]string, error) {
40
	वापस करना मानचित्र [ स्ट्रिंग ] स्ट्रिंग {
41
		"x-token": t.token,
42
	} , शून्य
43
}
44

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

49
समारोह मुख्य ( ) {
50
	opts := []grpc.DialOption{
51
grpc ( credentials.NewTLS ( & tls.Config { } ) )​​​​​​​
52
		grpc.WithKeepaliveParams(kacp),
53
		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.Name)),
54
		grpc.WithPerRPCCredentials(tokenAuth{token: token}),
55
	}
56

57
	conn, err := grpc.NewClient(endpoint, opts...)
58
	यदि त्रुटि != शून्य {
59
		log.Fatalf("Failed to connect: %v", err)
60
	}
61
	कनेक्शन स्थगित करें । बंद करें ( )
62

63
	client := pb.NewGeyserClient(conn)
64

65
    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
66
    defer cancel()
67

68
    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
69
	यदि त्रुटि != शून्य {
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 = "YOUR_TOKEN_NUMBER";
10

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

17
    const commitment = CommitmentLevel.CONFIRMED;
18

19
    try {
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
main()
28
    .catch((err) => {
29
        console.error("Unhandled error:", err);
30
        process.exit(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 = "YOUR_TOKEN_NUMBER";
10

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

17
    const commitment = CommitmentLevel.CONFIRMED;
18

19
    try {
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
main()
28
    .catch((err) => {
29
        console.error("Unhandled error:", err);
30
        process.exit(1);
31
    });
32

अब तक कोई खाता नहीं है?

अपना बनाएँ Quicknode endpoint कुछ ही सेकंड में निर्माण शुरू करें

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