lighthouse/scripts/local_testnet/bootnode.sh
realbigsean c5786a8821 Doppelganger detection (#2230)
## Issue Addressed

Resolves #2069 

## Proposed Changes

- Adds a `--doppelganger-detection` flag
- Adds a `lighthouse/seen_validators` endpoint, which will make it so the lighthouse VC is not interopable with other client beacon nodes if the `--doppelganger-detection` flag is used, but hopefully this will become standardized. Relevant Eth2 API repo issue: https://github.com/ethereum/eth2.0-APIs/issues/64
- If the `--doppelganger-detection` flag is used, the VC will wait until the beacon node is synced, and then wait an additional 2 epochs. The reason for this is to make sure the beacon node is able to subscribe to the subnets our validators should be attesting on. I think an alternative would be to have the beacon node subscribe to all subnets for 2+ epochs on startup by default.

## Additional Info

I'd like to add tests and would appreciate feedback. 

TODO:  handle validators started via the API, potentially make this default behavior

Co-authored-by: realbigsean <seananderson33@gmail.com>
Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: Paul Hauner <paul@paulhauner.com>
2021-07-31 03:50:52 +00:00

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#!/usr/bin/env bash
#
# Generates a bootnode enr and saves it in $TESTNET/boot_enr.yaml
# Starts a bootnode from the generated enr.
#
source ./vars.env
echo "Generating bootnode enr"
lcli \
generate-bootnode-enr \
--ip 127.0.0.1 \
--udp-port $BOOTNODE_PORT \
--tcp-port $BOOTNODE_PORT \
--genesis-fork-version $GENESIS_FORK_VERSION \
--output-dir $DATADIR/bootnode
bootnode_enr=`cat $DATADIR/bootnode/enr.dat`
echo "- $bootnode_enr" > $TESTNET_DIR/boot_enr.yaml
echo "Generated bootnode enr and written to $TESTNET_DIR/boot_enr.yaml"
DEBUG_LEVEL=${1:-info}
echo "Starting bootnode"
exec lighthouse boot_node \
--testnet-dir $TESTNET_DIR \
--port $BOOTNODE_PORT \
--listen-address 127.0.0.1 \
--network-dir $DATADIR/bootnode \