getLatestBlockhash gRPC Method - Solana gRPC

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

Parámetros

commitment

cadena

Cargando...

PROCESSED

cadena

Cargando...

CONFIRMED

cadena

Cargando...

FINALIZED

cadena

Cargando...

Devoluciones

ranura

cadena

Cargando...

blockhash

cadena

Cargando...

lastValidBlockHeight

cadena

Cargando...

Solicitud

1
paquete principal
2

3
import (
4
	«contexto»
5
	«crypto/tls»
6
	«fmt»
7
	«registro»
8
	«tiempo»
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    = "TU_NÚMERO_DE_TOKEN"
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 cadena
37
}
38

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

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

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

57
	conn, err := grpc.NewClient(endpoint, opts...)
58
	si err != nil {
59
		registro.Fatalf(«Error al conectarse: %v», err)
60
	}
61
	aplazar conn.Cerrar()
62

63
	cliente := pb.NewGeyserClient(conn)
64

65
    ctx, cancel := contexto.WithTimeout(contexto.Background(), 10*vez.Segunda)
66
    aplazar cancelar()
67

68
    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
69
	si 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
paquete principal
2

3
import (
4
	«contexto»
5
	«crypto/tls»
6
	«fmt»
7
	«registro»
8
	«tiempo»
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    = "TU_NÚMERO_DE_TOKEN"
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 cadena
37
}
38

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

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

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

57
	conn, err := grpc.NewClient(endpoint, opts...)
58
	si err != nil {
59
		registro.Fatalf(«Error al conectarse: %v», err)
60
	}
61
	aplazar conn.Cerrar()
62

63
	cliente := pb.NewGeyserClient(conn)
64

65
    ctx, cancel := contexto.WithTimeout(contexto.Background(), 10*vez.Segunda)
66
    aplazar cancelar()
67

68
    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
69
	si 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 = "TU_NÚMERO_DE_TOKEN";
10

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

17
    const compromiso = NivelDeCompromiso.CONFIRMADO;
18

19
    prueba {
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
principal()
28
    .captura((err) => {
29
        consola.error(«Error no gestionado:», err);
30
        proceso.salir(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 = "TU_NÚMERO_DE_TOKEN";
10

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

17
    const compromiso = NivelDeCompromiso.CONFIRMADO;
18

19
    prueba {
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
principal()
28
    .captura((err) => {
29
        consola.error(«Error no gestionado:», err);
30
        proceso.salir(1);
31
    });
32

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