Metamask: Troubleshooting Chain ID in WalletConnect
When you connect your dApp to a WalletConnect instance, you probably expect events and functions to be triggered when a user interacts with your app code on the wallet. However, after changing the chain on the WalletConnect wallet, these interactions seem to be ignored. In this article, we will explore ways to troubleshoot and resolve this issue.
The Problem
When the user selects their account address and chain ID in WalletConnect, they expect the dApp to receive events or functions that fire when a specific chain is selected. However, after changing the chain on the WalletConnect wallet, the interactions seem to be lost. This can lead to unexpected behavior, user confusion, and potentially even security issues.
Causes of the issue
There are several reasons why this can happen:
- Chain ID not updating: When you change the chain on WalletConnect’s wallet, it may take a few seconds for the chain ID in your dApp to update.
- WalletConnect library not handling changes properly: The WalletConnect JavaScript library is not designed to handle long-running operations such as updating chains. It may exit prematurely or fail to update the chain ID properly.
- DApp code not listening for events: Your dApp code may not be configured to listen for events on the selected chain, or it may not have been updated properly after changing the chain.
Troubleshooting Steps
To resolve this issue and ensure that your dApp receives events and functions when a user interacts with WalletConnect on their account address and chain ID, follow these steps:
1. Check the WalletConnect library version
Make sure that you are using the latest version of the WalletConnect JavaScript library. You can check for updates in the official WalletConnect documentation or by checking your dApp’s codebase.
2. Update the dApp code to listen for events on the selected chain
Make sure that your dApp code listens for events on the selected chain using the walletconnect event listeners:
// Assuming you are using the following library
const walletConnect = require('walletconnect');
const connection = new walletConnect.Connection({
// Your account address and chain ID as strings
account: '0x...',
chainId: '...'.
});
connection.on('chainChanged', (newChain) => {
console.log(Chain modified to ${newChain});
});
3. Wait for the chain ID to update
After changing the chain on the WalletConnect wallet, wait a few seconds for the chain ID to update in your dApp. This should give the library enough time to catch up with the change.
4. Check that event listeners are set correctly
Check that all required event listeners are set in your walletconnect instance:
const walletConnect = require('walletconnect');
const connection = new walletConnect.Connection({
// Your account address and chain ID as strings
account: '0x...',
chainId: '...'.
});
connection.on('chainChanged', (newChain) => {
console.log(Chain modified to ${newChain});
});
5. Check for errors
If your dApp is not receiving events or functions, check the browser console and JavaScript error stack for any errors that may be causing the issue.
Conclusion
Changing the chain on WalletConnect’s wallet can sometimes cause unexpected behavior in your dApp. By following these troubleshooting steps and ensuring that event listeners are configured correctly, you should be able to resolve the issue and ensure that your dApp receives events and functions when a user interacts with WalletConnect on their account address and chain ID.
Additional Resources
- [WalletConnect Documentation](
- [WalletConnect GitHub Repository](