[bug]: How can i get chainId?

[fatiherdogan01]

Description

Hi,
Firstly why not return chainId from useWalletConnectModal?

const { provider } = useWalletConnectModal();
...
const chainId = await provider.request({ method: 'eth_chainId' });
console.log({ chainId });

I'm trying to get ChainId but it always returns 1.

WalletConnect Modal SDK version

1.0.0-rc.5

Output of npx react-native info

System:
OS: macOS 13.3.1
CPU: (10) arm64 Apple M1 Pro
Memory: 83.77 MB / 16.00 GB
Shell: 5.9 - /bin/zsh
Binaries:
Node: 18.14.2 - ~/.nvm/versions/node/v18.14.2/bin/node
Yarn: 1.22.18 - /opt/homebrew/bin/yarn
npm: 9.5.0 - ~/.nvm/versions/node/v18.14.2/bin/npm
Watchman: 2023.04.24.00 - /opt/homebrew/bin/watchman
Managers:
CocoaPods: Not Found
SDKs:
iOS SDK:
Platforms: DriverKit 22.2, iOS 16.2, macOS 13.1, tvOS 16.1, watchOS 9.1
Android SDK: Not Found
IDEs:
Android Studio: 2022.2 AI-222.4459.24.2221.9971841
Xcode: 14.2/14C18 - /usr/bin/xcodebuild
Languages:
Java: 11.0.15 - /usr/bin/javac
npmPackages:
@react-native-community/cli: Not Found
react: 18.2.0 => 18.2.0
react-native: 0.71.8 => 0.71.8
react-native-macos: Not Found
npmGlobalPackages:
react-native: Not Found

Expo Version (if applies)

No response

Steps to reproduce

No response

Snack, code example, screenshot, or link to a repository

No response

[ignaciosantise]

hey @fatiherdogan01 that's the correct way to get the active chain id
if it returns 1, it means the default chain is eip155:1

If the session contains more than one chain, you can change it calling provider?.setDefaultChain('eip155:CHAIN_ID');

[fatiherdogan01]

Yes so, how can I get this network if user is on Polygon Mainnet or X chain in Wallet (MetaMask v7.3.0)?

namespaces: {
    eip155: {
      methods: REQUIRED_METHODS,
      chains: ['eip155:1', 'eip155:137'],
      events: REQUIRED_EVENTS,
      rpcMap: {},
    },
  },

If I use these sessionParams there is no action in MetaMask.

[ignaciosantise]

If you want to switch the chain from metamask, you'll need to so something similar to what's described here

1. add wallet_addEthereumChain and wallet_switchEthereumChain to your session params
2. Make the requests using the provider:

try {
  await provider.request({
    method: 'wallet_switchEthereumChain',
    params: [{ chainId: '0xf00' }],
  });
} catch (switchError) {
  // This error code indicates that the chain has not been added to MetaMask.
  if (switchError.code === 4902) {
    try {
      await provider.request({
        method: 'wallet_addEthereumChain',
        params: [
          {
            chainId: '0xf00',
            chainName: '...',
            rpcUrls: ['https://...'] /* ... */,
          },
        ],
      });
    } catch (addError) {
      // handle "add" error
    }
  }
  // handle other "switch" errors
}

[fatiherdogan01]

I use this. The problem here is that I can't get the current chain after connecting to the wallet.

[ignaciosantise]

provider.request({ method: 'eth_chainId' }); should work.

We currently have this issue with MetaMask in Android, i'll dig into it but in the meantime can you test the same flow with other wallets?

[fatiherdogan01]

I tried imToken, Rainbow and Trust Wallet in Android. They don't support a connection outside the Ethereum network.