Metamask: troubleshooting chain ID in WalletConnect
When you connect DAPP to WalletConnect atmosphere, you are likely to expect events and functions to start when the user interacts with the application code in the wallet. However, after changing the chain, these interactions in the WalletConnect wallet seem to be ignored. In this article, we explore ways to fail and solve this problem.
Topic
When the user selects their account address and chain ID in WalletConnect, they expect DAP to get events or activities that will trigger when a particular chain is selected. However, when the chain has been replaced with WalletConnect’s wallet, the interactions seem to have disappeared. This can lead to unexpected behavior, confusion of users, and possibly even safety issues.
Causes of the problem
There are several reasons why this can happen:
- The chain ID will not be updated : When you change the chain in the WalletConnect’s wallet, it may take a few seconds to update the chain ID in DAP.
- WalletConnect Library does not handle changes properly : WalletConnect JavaScript Library is not designed to handle long -term functions such as upgrade chains. It can exit early or not upgrade the chain token correctly.
- DAPP code that does not listen to events : DAPP’s code must not be set to listen to the events in the selected chain, or may not have been correctly updated after changing the chain.
troubleshooting stages
To solve this problem and make sure DAPP receives events and activities when the user interacts with WalletConnect at the account address and chain ID follows these steps:
1. Check the WalletConnect Library version
Make sure you are using the latest version of the WalletConnect JavaScript library. You can check the updates in the official WalletConnect documentation or by checking DApp’s CodeBase.
2. Update DAPP code to listen to the events in the selected chain
Make sure your DAPP code listens to the events in the selected chain using the listeners of WalletConnect events:
`Javascript
// assuming you are using the next library
Const WalletConnect = Require (‘WalletConnect’);
Const Connection = New Walletconnect.connection ({
// your account address and chain ID as springs
Account: ‘0x …’,
Chainid: ‘…’.
});
Connection.on (‘Chain Change’, (NewChain) => {
Console.log (chain was changed $ {newchain});
});
`
3. Wait for the chain ID update
After changing the chain in WalletConnect’s wallet, wait for a few seconds to update the chain ID in DAP. This should give enough time to catch the library for change.
4. Make sure the event listeners are set correctly
Check that your “WalletConnect” is all required to listen to the event:
`Javascript
Const WalletConnect = Require (‘WalletConnect’);
Const Connection = New Walletconnect.connection ({
// your account address and chain ID as springs
Account: ‘0x …’,
Chainid: ‘…’.
});
Connection.on (‘Chain Change’, (NewChain) => {
Console.log (chain was changed $ {newchain});
});
`
5. Check errors
If DAPP does not receive events or functions, check the browser and Javascript error stack of any errors that may cause the problem.
conclusion
Changing the chain in a WalletConnect wallet can sometimes cause an unexpected behavior in DAP. By following these failure stages and verifying the event listeners correctly, you should be able to solve the problem and ensure that DAPP receives events and functions when the user interacts with WalletConnect at the account address and chain ID.
Other resources
- [WalletConnect documentation] (
- [Walletconnect GitHub warehouse] (https: // github.