Error codes alones are not reliable for eth node RPC
Error codes alones are not reliable for eth node RPC

Same RPC error codes are used for multiple errors:

Parity:
https://github.com/paritytech/parity/blob/master/rpc/src/v1/helpers/errors.rs#L29

Geth:
https://github.com/ethereum/go-ethereum/blob/master/rpc/errors.go#L55

hackaugusto/raiden,hackaugusto/raiden