> For the complete documentation index, see [llms.txt](https://docs.blockrazor.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockrazor.io/streams/block-stream/solana/geyser-stream/go.md).

# Solana Geyser Stream Go Example

Use this go example to subscribe to Solana Geyser Stream of BlockRazor

### Quick Start

Please refer to [README.md](https://github.com/BlockRazorinc/geyserstream-client-go/blob/main/README.md)

### Code Example

```go
package main

import (
	"context"
	"crypto/x509"
	"encoding/json"
	"io"
	"log"
	"time"

	"github.com/BlockRazorinc/geyserstream-client-go/pb"
	"google.golang.org/grpc"
	"google.golang.org/grpc/credentials"
	"google.golang.org/grpc/credentials/insecure"
	"google.golang.org/grpc/keepalive"
	"google.golang.org/grpc/metadata"
)

var (
	// grpc server address
	grpcAddr = "geyserstream-tokyo.blockrazor.xyz:443"
	// auth token
	token = ""

	// Subscribe to block update
	subscriptBlocks = false

	// Subscribe to accounts
	subscriptAccounts   = false
	accountsFilter      = []string{}
	accountOwnersFilter = []string{}

	// Subscribe to transactions, required for tx_account_include/tx_account_exclude and vote/failed.
	subscriptTransactions       = false
	failedTransactions          = true
	voteTransactions            = true
	transactionsAccountsInclude = []string{}
	transactionsAccountsExclude = []string{}
)

var kacp = keepalive.ClientParameters{
	Time:                10 * time.Second, // send pings every 10 seconds if there is no activity
	Timeout:             time.Second,      // wait 1 second for ping ack before considering the connection dead
	PermitWithoutStream: true,             // send pings even without active streams
}

func grpc_connect(address string, plaintext bool) *grpc.ClientConn {
	var opts []grpc.DialOption
	if plaintext {
		opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()))
	} else {
		pool, _ := x509.SystemCertPool()
		creds := credentials.NewClientTLSFromCert(pool, "")
		opts = append(opts, grpc.WithTransportCredentials(creds))
	}

	opts = append(opts, grpc.WithKeepaliveParams(kacp))

	log.Println("Starting grpc client, connecting to", address)
	conn, err := grpc.Dial(address, opts...)
	if err != nil {
		log.Fatalf("fail to dial: %v", err)
	}

	return conn
}

func grpc_subscribe(conn *grpc.ClientConn) {
	var err error
	client := pb.NewGeyserClient(conn)

	var subscription pb.SubscribeRequest

	if subscriptBlocks {
		if subscription.Blocks == nil {
			subscription.Blocks = make(map[string]*pb.SubscribeRequestFilterBlocks)
		}
		subscription.Blocks["blocks"] = &pb.SubscribeRequestFilterBlocks{}
	}

	if (len(accountsFilter)+len(accountOwnersFilter)) > 0 || (subscriptAccounts) {
		if subscription.Accounts == nil {
			subscription.Accounts = make(map[string]*pb.SubscribeRequestFilterAccounts)
		}

		subscription.Accounts["account_sub"] = &pb.SubscribeRequestFilterAccounts{}

		if len(accountsFilter) > 0 {
			subscription.Accounts["account_sub"].Account = accountsFilter
		}

		if len(accountOwnersFilter) > 0 {
			subscription.Accounts["account_sub"].Owner = accountOwnersFilter
		}
	}

	// Set up the transactions subscription
	if subscription.Transactions == nil {
		subscription.Transactions = make(map[string]*pb.SubscribeRequestFilterTransactions)
	}

	// Subscribe to generic transaction stream
	if subscriptTransactions {
		subscription.Transactions["transactions_sub"] = &pb.SubscribeRequestFilterTransactions{
			Failed: &failedTransactions,
			Vote:   &voteTransactions,
		}

		subscription.Transactions["transactions_sub"].AccountInclude = transactionsAccountsInclude
		subscription.Transactions["transactions_sub"].AccountExclude = transactionsAccountsExclude
	}

	subscriptionJson, err := json.Marshal(&subscription)
	if err != nil {
		log.Printf("Failed to marshal subscription request: %v", subscriptionJson)
	}
	log.Printf("Subscription request: %s", string(subscriptionJson))

	// Set up the subscription request
	ctx := context.Background()
	if token != "" {
		md := metadata.New(map[string]string{"x-token": token})
		ctx = metadata.NewOutgoingContext(ctx, md)
	}

	stream, err := client.Subscribe(ctx)
	if err != nil {
		log.Fatalf("%v", err)
	}
	err = stream.Send(&subscription)
	if err != nil {
		log.Fatalf("%v", err)
	}

	for {
		resp, err := stream.Recv()
		timestamp := time.Now().UnixNano()

		if err == io.EOF {
			return
		}
		if err != nil {
			log.Fatalf("Error occurred in receiving update: %v", err)
		}

		log.Printf("%v %v", timestamp, resp)
	}
}
func main() {
	conn := grpc_connect(grpcAddr, false)
	defer conn.Close()

	grpc_subscribe(conn)
}
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.blockrazor.io/streams/block-stream/solana/geyser-stream/go.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.