Developer feature proposal: manually override wallet's RPC and other services URLs

[stefanopepe]

Story

As a power user/developer who is experiencing RPC issues, I want to override/change the RPC URL so I can overcome the unexpected issues. (We can replace RPC with contract helper or indexer to get the same expected result)

Acceptance Criteria

• [ ] Overridden URL information is persistent across sessions
• [ ] Browser console, during page loading, alerts the user if these values are not standard
• [ ] Any changes can be reset to default with a single command
• [ ] Overridden URLs work on all RPC/indexer/helper calls
• [ ] Tested with alternative RPC/indexer/helper

Unhappy Path

• even when the user changes this parameter, some calls or behaviors use hardcoded, standard URLs
• users are not aware that the wallet is still using overridden URLs and encounter unexpected issues

Assets

No UI is necessary, this is a low-level command that should be available only to power users.

At a very high level, the idea is to let the power user open the browser console and type: something.override.rpc("URL or IP") something.override.indexer("URL or IP") something.override.reset() something.override.status()

I'm not aware of specific obstacles with React, near-api-js or future infrastructure plans - this feature should keep a "small" size and shouldn't require more than a few days of work.

Notes

This feature is useful for users who experience slow RPC/indexer response or want to run tests on their own nodes. It is not intended for common users and doesn't need a user interface. It is not intended to check if the overridden address is valid. This first release is good if it works via command console.

[think-in-universe]

just want to point out that this feature is different from the feature request we received from users/developers previously during the RPC downtime: https://github.com/near/near-wallet-roadmap/issues/36

https://github.com/near/near-wallet-roadmap/issues/36 includes more UI work from wallet to enable users to select the RPC nodes they prefer.