Node.js集成Coinpayments时出现Polling error轮询错误

Hey there, let's figure out why you're hitting that "Polling error" after your Coinpayments code runs for a few seconds. First, let's break down the most likely causes and how to fix them:

1. Auto IPN Polling Network/Configuration Issues #

Your code has autoIpn: 'true' enabled, which makes the library automatically poll Coinpayments' IPN (Instant Payment Notification) endpoints. The error probably pops up when this polling process fails.

• First test: Temporarily set autoIpn: 'false' and run your code again. If the "Polling error" disappears, the problem is definitely tied to the automatic IPN polling.
• Check connectivity: Make sure your server can reach Coinpayments' domains (like coinpayments.net). You can test this with a simple command:

  curl https://www.coinpayments.net/api.php
  

  If this fails, you might have a firewall, proxy, or network restriction blocking the request.
• Verify IPN settings in Coinpayments dashboard: Log into your Coinpayments account, go to Account Settings > IPN Settings, and confirm your IPN URL is correctly configured (even with autoIpn enabled, some backend setup might still be required).

2. Credential or Permission Mismatches #

Even though your initial getBasicInfo call works, the IPN polling might use different validation rules.

• Double-check your secret value: Ensure it's an exact match to the one in your Coinpayments dashboard (watch out for typos or case sensitivity).
• Confirm API key permissions: Make sure your API key has access to IPN-related endpoints. You can check this in the Coinpayments API settings section.

3. Outdated Library Version #

The coinpayments npm package might have a bug in its auto IPN polling logic that's causing this error.

• Check your current version: Run this command in your project directory:

  npm list coinpayments
  

• Update to the latest version:

  npm install coinpayments@latest
  

• If the issue persists, check the package's GitHub issues for similar reports (other developers might have faced and solved this exact problem).

4. Switch to Manual IPN Polling #

If the auto IPN feature is causing more trouble than it's worth, you can disable it and implement manual polling with better error handling. Here's a modified version of your code to try:

var Coinpayments = require('coinpayments');
var options = { 
  key: 'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX', 
  secret: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', 
  autoIpn: 'false', // Disable auto polling
  ipnTime: 'false' 
}
var client = new Coinpayments(options);

// Initial basic info call
client.getBasicInfo(function (error, result) { 
  if (error) {
    console.log('Basic Info Error:', error);
    return;
  }
  console.log('Basic Info:', result);

  // Start manual IPN polling
  function pollIPN() {
    client.getIpnLog(function(ipnError, ipnResult) {
      if (ipnError) {
        console.error('IPN Polling Error:', ipnError);
        // Retry after 5 seconds if there's an error
        setTimeout(pollIPN, 5000);
        return;
      }
      console.log('IPN Log:', ipnResult);
      // Poll every 30 seconds (adjust as needed)
      setTimeout(pollIPN, 30000);
    });
  }

  pollIPN();
});

This gives you full control over the polling interval and error handling, so you can adjust it based on Coinpayments' rate limits and your needs.

5. Check for Rate Limiting #

Coinpayments' API has request rate limits. If the auto polling interval is too short, you might be hitting those limits, which triggers the error.

• Refer to Coinpayments' API documentation to find the allowed request frequency for IPN endpoints.
• If the library lets you adjust the polling interval via ipnTime, try setting it to a higher value (e.g., '30' for 30 seconds).

内容的提问来源于stack exchange，提问作者Krunal Limbad