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Solana: web socket price feed using programSubscribe
Troubleshooting Solana Web Sockets: Getting Price Feed Updates
As a Solana user, you rely on real-time price feeds to stay informed about market trends and prices. However, I’ve encountered an issue with getting price updates for pairs in my program. This article aims to provide a clear overview of the problem and steps taken to solve it.
The Issue: ProgramSubscribe
When using programSubscribe to get price feed updates on Solana, there are several potential issues that can arise. Specifically, when dealing with price feeds from external sources, such as APIs or exchanges, these subscriptions may fail to return data due to various reasons like:
- Timeouts:
The subscription has a timeout before the expected price update is received.
- Network Issues: Network connectivity problems can disrupt the WebSocket connection, causing issues with price updates.
- API Errors: API errors or rate limits on external sources can prevent successful subscriptions.
Steps to Solve the Issue:
To troubleshoot and resolve this issue, follow these steps:
Step 1: Check Subscription Pairs
Ensure that the correct subscription pairs are being used. You may need to inspect your programSubscribe code to verify that you’re using the right pair.
const { Program } = require("@solana-program/p Program");
const program = new Program("YourProgram", "YOUR SOLANA PROGRAM ID");
// Retrieve the list of available subscription pairs
const subscriptionPairs = await program.getProgramInfo(program.programId, ["subscribers"]);
Step 2: Verify Connection
Before making a WebSocket request to external sources, ensure that your connection is stable and can establish a persistent network connection.
import { createClient } from "ws";
// Create a client WS
const wss = new createClient({ url: "wss://external-source.com/subscribe" });
// Use the WS client to make a subscription request
async function subscribeToPriceFeed() {
try {
const response = await wss.send({
id: "YOUR_WSS_ID",
jsonrpc: "2.0",
method: "subscribe",
params: [
{
type: "PRICE_FEED",
pair: "YOUR_PAIR_ID",
callbackFunction,
callbackParams,
},
],
});
console.log(response.result);
} catch ( error ) {
// Handle errors
}
}
Step 3: Add Error Handling
To handle potential issues that may arise from timeouts, network connectivity problems, or API errors, you can add error handling mechanisms to your code.
// Wrap the subscription call with try-catch blocks
async function subscribeToPriceFeed() {
try {
const response = await wss.send({
id: "YOUR_WSS_ID",
jsonrpc: "2.0",
method: "subscribe",
params: [
{
type: "PRICE_FEED",
pair: "YOUR_PAIR_ID",
callbackFunction,
callbackParams,
},
],
});
console.log(response.result);
} catch ( error ) {
// Handle errors
if (error.errorType === "TimeoutError") {
console.error("Timeout error occurred. Retrying...");
wait setTimeout(subscribeToPriceFeed, 5000); // Wait for 5 seconds before retrying
} else if (error.errorType === "WebsocketConnectionClosed") {
console.error("WebSocket connection closed. Retrying...");
wait setTimeout(subscribeToPriceFeed, 5000); // Wait for 5 seconds before retrying
} else {
console.error(Unknown error: ${error.message});
}
}
}
By following these steps and incorporating proper error handling mechanisms into your code, you should be able to resolve the issue with getting price updates for pairs in Solana using programSubscribe.