Consider returning some bytecode for subcall address

[lukaw3d]

MetaMask tries to detect if subcall address is a contract

curl https://sapphire.oasis.io/ \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"method":"eth_getCode","params":["0x0100000000000000000000000000000000000103","latest"],"id":1,"jsonrpc":"2.0"}'
# {"jsonrpc":"2.0","id":1,"result":"0x"}

this fails, so it assumes every transaction to it is a "Transfer Request". If we returned some bytecode it would show as "Transaction Request"

Transfer Request	Transaction Request

[lukaw3d]

Not sure if other projects have some mitigations like this. Maybe this has weird effects on other tools 🤷

[ptrus]

Looks like some other projects do something as suggested, eg: https://pkg.go.dev/github.com/mezo-org/mezod/precompile/maintenance#pkg-constants

Note that this should likely be implemented in the Oasis-SDK, and not in the gateway.

[ptrus]

Please reopen in oasis-sdk repo, if you think we should do this.