could not detect network (event="noNetwork", code=NETWORK_ERROR, version=providers/5.0.5) in React Native Expo

Here is my code being used for testing. It works in a small node program but will not work in React Native.

import "@ethersproject/shims";
import { ethers } from "ethers";

const NodeAddress = "http://34.87.222.10:8545";
// ....
  useEffect(() => {
    (async () => {
      try {
        let p = await ethers.providers.getDefaultProvider(NodeAddress);
        await p._networkPromise;
        console.log(p);
      } catch (e) {
        console.log(e);
      }
    })();
  }, []);

// ....

[nikita-zot-1408]

Strangely,react native does not work with the current version of ethers library but it works fine with ethers version 5.0.5 and lower

[ricmoo]

I think there may be. Depending on your setup (again, if you are using a proxy, things might further be affected), but you might want to adjust the network device to be any (I think you do this by specifying 0.0.0.0) and you might need to add the CORS origin flag to allow any (I don’t know the key or value to set for this).

If it is using CORS, make sure your Proxy is set up to forward OPTIONS too.

Setting up a link is definitely non-trivial…