RPC error handling examples

This repo contains multiple examples to handle RPC errors when sending requests to blockchain nodes.

Handle errors with Promises

Use can wrap the RPC requests in a method and use Promise.all, Promise.race or Promise.any.

• Promise.all example.
• Promise.race example.
• Promise.any example.

Retry same request

We can wrap the RPC request in a method that catches any error and use recursion to make the retries.

• Retry example.

Retry same request with delay

A modification of the previous one, just adding a delay between each retry

• Retry with delay example.

Retry with a backup provider

The retries are done using a different provider that users a different RPC endpoint.

• Retry with backup provider.

Retry with backup provider for smart contract methods

Another wrapper function used to invoke smart contract methods, catch any errors and retry using a different provider and RPC endpoint.

• Retry with backup provider for smart contracts.