getLatestBlockhash gRPC Method - Solana gRPC

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

Parameters

toewijding

tekenreeks

Bezig met laden...

PROCESSED

tekenreeks

Bezig met laden...

CONFIRMED

tekenreeks

Bezig met laden...

FINALIZED

tekenreeks

Bezig met laden...

Retourzendingen

gleuf

tekenreeks

Bezig met laden...

blockhash

tekenreeks

Bezig met laden...

lastValidBlockHeight

tekenreeks

Bezig met laden...

Verzoek

1
pakket hoofd
2

3
import (
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	"context"
5
	"crypto/tls"
6
	"fmt"
7
	"log"
8
	"tijd"
9

10
	pb "yellowstone/proto"
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12

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	"google.golang.grpc"
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	"google.golang.grpc"
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	"google.golang.org/grpc/encoding/gzip"
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	"google.golang.org/grpc/keepalive"
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)
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// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
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// For eg: QN Endpoint: https://docs-demo.solana-mainnet.quiknode.pro/abcde123456789
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// endpoint will be: docs-demo.solana-mainnet.quiknode.pro:443  {443 is the port number for gRPC}
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// token will be : abcde123456789
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24
var (
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	endpoint = "YOUR_QN_ENDPOINT:443"
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	token    = "YOUR_TOKEN_NUMBER"
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)
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var kacp = keepalive.ClientParameters{
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	Time:                10 * time.Second,
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	Timeout:             time.Second,
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	PermitWithoutStream: true,
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}
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type tokenAuth struct {
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	token tekenreeks
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}
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func (t tokenAuth) GetRequestMetadata(ctx context.Context, in ...string) (map[string]string, error) {
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	terug kaart[string]string{
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		"x-token": t.token,
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	}, nil
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}
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func (tokenAuth) RequireTransportSecurity() bool {
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	return true
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}
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func main() {
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	opts := []grpc.DialOption{
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		grpc.WithTransportCredentials(inloggegevens.NewTLS(&tls.Config{})),
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		grpc.WithKeepaliveParams(kacp),
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		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.Name)),
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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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	als err != nil {
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		log.Fatalf("Failed to connect: %v", err)
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	}
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	uitstellen conn.Sluiten()
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	client := pb.NewGeyserClient(conn)
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    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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    defer cancel()
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    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
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	als err != nil {
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		log.Fatalf("Failed to get latest blockhash: %v", err)
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	}
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	fmt.Printf("Latest Blockhash Information:\n")
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	fmt.Printf("  Blockhash: %+v\n", latestBlockHash)
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}
77

1
pakket hoofd
2

3
import (
4
	"context"
5
	"crypto/tls"
6
	"fmt"
7
	"log"
8
	"tijd"
9

10
	pb "yellowstone/proto"
11

12

13
	"google.golang.grpc"
14
	"google.golang.grpc"
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
	token tekenreeks
37
}
38

39
func (t tokenAuth) GetRequestMetadata(ctx context.Context, in ...string) (map[string]string, error) {
40
	terug kaart[string]string{
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{
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		grpc.WithTransportCredentials(inloggegevens.NewTLS(&tls.Config{})),
52
		grpc.WithKeepaliveParams(kacp),
53
		grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(1024*1024*1024), grpc.UseCompressor(gzip.Name)),
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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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	als err != nil {
59
		log.Fatalf("Failed to connect: %v", err)
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	}
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	uitstellen conn.Sluiten()
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	client := pb.NewGeyserClient(conn)
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    ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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    defer cancel()
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    latestBlockHash, err := client.GetLatestBlockhash(ctx, &pb.GetLatestBlockhashRequest{})
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	als err != nil {
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		log.Fatalf("Failed to get latest blockhash: %v", err)
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	}
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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
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";
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const TOKEN = "YOUR_TOKEN_NUMBER";
10

11
async functie main() {
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    const client = new Client(ENDPOINT, TOKEN, {
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        grpcDefaultCompressionAlgorithm: 0, // 0 = gzip, 1 = zstd
14
    });
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    await client.connect();
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    const commitment = CommitmentLevel.CONFIRMED;
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    try {
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        const response = await client.getLatestBlockhash(commitment);
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        console.log(`Latest Blockhash: ${JSON.stringify(response, null, 2)}`);
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    } catch (error) {
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        console.error("Error fetching latest blockhash:", error);
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    }
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}
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main()
28
    .catch((err) => {
29
        console.error("Unhandled error:", err);
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        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
async functie main() {
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

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