blockUnsubscribe – Solana

The blockUnsubscribe JSON-RPC method allows clients to unsubscribe from receiving block notifications.

The blockUnsubscribe RPC Solana method cancels an active block subscription using its subscription ID.

Once unsubscribed, the client will no longer receive notifications about block confirmations or finalizations.

Supported Networks

• Mainnet

• Devnet

Parameters

Required Parameter

• integer (required): The subscription ID for the block subscription to cancel.

Result

The response returns a boolean value indicating whether the unsubscribe operation was successful.

Result Format

• bool: true if the unsubscribe was successful; otherwise, false.

Request Example

API Endpoints

wss://go.getblock.io/<ACCESS-TOKEN>/

JSON-RPC Request

wss

wscat -c "wss://go.getblock.io/<ACCESS-TOKEN>/" -x '{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "blockUnsubscribe",
  "params": [0]
}'

Response

A successful request returns a boolean value.

Example Response

{
  "jsonrpc": "2.0",
  "result": true,
  "id": 1
}

In this response:

• result: true indicates the unsubscribe operation was successful.

Error Handling

Common blockUnsubscribe error scenarios:

• Invalid subscription ID: The provided ID does not correspond to an active subscription.

• Network issues: Problems with the Solana JSON-RPC API endpoints.

Example Error Response

{
  "jsonrpc": "2.0",
  "error": {
    "code": -32602,
    "message": "Invalid subscription ID"
  },
  "id": 1
}

Use Cases

The Solana blockUnsubscribe method is essential for:

• Managing network resources by terminating unused subscriptions.

• Optimizing dApp performance.

• Reducing network bandwidth consumption.

Code blockUnsubscribe Example – Web3 Integration

JavaScript

const WebSocket = require('ws');

const url = "wss://go.getblock.io/<ACCESS-TOKEN>/";
const payload = {
  jsonrpc: "2.0",
  id: 1,
  method: "blockUnsubscribe",
  params: [0]
};

const ws = new WebSocket(url);

ws.on('open', () => {
  ws.send(JSON.stringify(payload));
});

ws.on('message', (data) => {
  console.log("Unsubscribe Response:", JSON.parse(data));
});

ws.on('error', (error) => {
  console.error("WebSocket error:", error.message);
});

ws.on('close', () => {
  console.log("WebSocket connection closed");
});

Integration with Web3

By integrating Web3 blockUnsubscribe into Solana's Core API, developers can efficiently manage subscription lifecycles, improve dApp performance, and optimize network resource utilization.