michaelsproul / mock-relay

mock-relay

This is a simple service implementing the mev-boost relay API. This is meant to be used as testing tool for consensus clients, especially in testnets where an actual relay might not be available (i.e, local testnets).

• engine_forkchoiceUpdatedV1 - Calls here are forwarded to the local execution engine.
• relay_getPayloadHeaderV1 - Calls here are transformed into engine_getPayloadV1 requests and sent to the local execution engine. The response's full payload is cached and then converted into a payload header before being returned to the caller. Currently, SignedMEVPayloadHeader will have an empty signature, but this will likely be updated in the future.
• relay_proposeBlindedBlockV1 - The transactions_root of the blinded block is used to retrieve and return the cached full payload. This relay does not actually propose the block, this may also be added in the future.

Build

This will install, in mock-relay in ~/.cargo/bin. Rust is required.

make

Run

By default, mock-relay runs on 127.0.0.1:8650 and attempts to connect to an execution engine on 8551. A JWT secret is required, the same one used by the execution engine you are attempting to connect to.

./mock-relay --jwt-secret YOUR_JWT_SECRET_PATH