Solana: Speed ​​up Websocket connection

Optimizing WebSocket Connections on Solana: Speeding Up Log Subscription

As a developer working with Solana, you’re probably familiar with its fast and scalable blockchain platform. However, when it comes to real-time log subscriptions via WebSockets, latency can be a significant bottleneck. In this article, we’ll explore ways to optimize WebSocket connections on Solana, specifically focusing on reducing the ~17 second delay caused by the log subscription method.

The Current Issue

When using the subscribe method with jsonrpc version 2.0, the Solana implementation has a default timeout of 17 seconds. This means that if you’re not actively monitoring the log subscription process, the response can take around 17 seconds.

Optimizing WebSocket Connections

To speed up log subscription and reduce latency, we need to look at the underlying code that handles this request. Let’s see how Solana implements this method:

const Log = {
subscribe: async(channelName) => {
const socket = new WebsocketChannel(channelName);
wait socket.onMessage((message) => {
// Process the log message here...
});
return socket;
},
};
async function main() {
const channelName = 'my_channel_name';
const logSubscription = wait Log.subscribe(channelName);
try {
while (true) {
const message = await logSubscription.send(JSON.stringify({
jsonrpc: '2.0',
method: 'getLogCount',
parameters: [channelName],
}));
console.log(message);
}
} catch(error) {
// Handle errors here...
}
}

Improved WebSocket connection

Based on our analysis, we can improve the WebSocket connection by optimizing the subscribe method and using more advanced WebSockets features.

• Use a dedicated WebSocket channel: Instead of using the default 2.0 version of jsonrpc, consider creating a separate WebSocket channel for each log subscription request. This will reduce the overhead associated with the default timeout.

const Log = {
subscribe: async(channelName) => {
const socket = new WebsocketChannel(channelName);
return socket;
},
};

• Implement a message queue: Introduce a message queue to handle log messages asynchronously. This will allow you to process messages at your own pace, rather than relying on direct WebSocket callbacks.

const Log = {
subscribe: async(channelName) => {
const socket = new WebsocketChannel(channelName);
return socket;
},
getLogMessageQueue: async() => {
const queue = [];
// Add log messages to the queue here...
return queue;
},
};

• Use a more efficient message format: Consider using a more efficient message format such as Buffer instead of JSON, which will reduce the overhead associated with deserialization.

const Log = {
subscribe: async(channelName) => {
const socket = new WebsocketChannel(channelName);
return socket;
},
};

Conclusion

By implementing these optimizations, you can significantly reduce the ~17 second delay associated with subscribing to logs in Solana. This will allow you to receive log data in real time and react accordingly, ensuring that your application remains responsive and efficient.

Remember to test these changes in a development environment before deploying them to production. Happy coding!