Update connect-spam-node doc (#75)

* update connect-spam-node doc

* Add note for staticnode update

* Document discv5 config for spamming node

src/connect-spam-node.md

@@ -1,16 +1,69 @@
 # Connect external spam node
 
 
-You can connect a node to the network that spams the nodes, sending messaging exceeding its rate limit.
+By using the [nwaku-spammer] (https://github.com/waku-org/nwaku/pull/2821), you can connect a node to the network that spams the other nodes, sending messages exceeding its rate limit. It will register an RLN membership at startup. It should be configured with the same contract and `rln-relay-user-message-limit` as the waku nodes. If a node spams enough for the peer-score to go below the threshold, then the peers will disconnect from the spamming node.
+
+- ⚠️ change `staticnode` to the node you wish. Note that the multiaddress is logged by every peer at startup.
+
+```bash
+docker run -it --network waku-simulator_simulation quay.io/wakuorg/nwaku-pr:2821 \
+      --relay=true \
+      --rln-relay=true \
+      --rln-relay-dynamic=true \
+      --rln-relay-eth-client-address=http://foundry:8545 \
+      --rln-relay-eth-contract-address=0xCf7Ed3AccA5a467e9e704C703E8D87F634fB0Fc9 \
+      --rln-relay-epoch-sec=1 \
+      --rln-relay-user-message-limit=1 \
+      --log-level=DEBUG \
+      --staticnode=/ip4/10.2.0.16/tcp/60000/p2p/16Uiu2HAmAA99YfoLitSXgY1bHaqjaTKhyrU4M4y3D1rVj1bmcgL8 \
+      --pubsub-topic=/waku/2/rs/66/0 \
+      --cluster-id=66 \
+      --rln-relay-eth-private-key=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 \
+      --rln-relay-cred-path=/keystore.json \
+      --rln-relay-cred-password=password123 \
+      --spammer=true \
+      --spammer-delay-between-msg=200
+```
+
+An alternative config for the spamming node is to have it connect to the discv5 network instead of a single static node.
+The `staticnode` config can be replaced with the below config. The bootstrap node will log its ENR.
 
 ```bash
-# TODO: Wait until we have waku-spammer
+ --discv5-discovery=true \
+ --discv5-enr-auto-update=True \
+ --discv5-bootstrap-node=BOOTSTRAP_ENR\
 ```
 
+You can also try to connect multiple spamming nodes, but it might be necessary to use a different private-key for each one to avoid the limitation of multiple contract transactions with the same nonce. Otherwise add a delay before running a new node. Note the `&`. Remember to kill the new nodes once you are done.
+
+```bash
+for i in {1..5}; do
+docker run -it --network waku-simulator_simulation quay.io/wakuorg/nwaku-pr:2821 \
+      --relay=true \
+      --rln-relay=true \
+      --rln-relay-dynamic=true \
+      --rln-relay-eth-client-address=http://foundry:8545 \
+      --rln-relay-eth-contract-address=0xCf7Ed3AccA5a467e9e704C703E8D87F634fB0Fc9 \
+      --rln-relay-epoch-sec=1 \
+      --rln-relay-user-message-limit=1 \
+      --log-level=DEBUG \
+      --staticnode=/ip4/10.2.0.16/tcp/60000/p2p/16Uiu2HAmAA99YfoLitSXgY1bHaqjaTKhyrU4M4y3D1rVj1bmcgL8 \
+      --pubsub-topic=/waku/2/rs/66/0 \
+      --cluster-id=66 \
+      --rln-relay-eth-private-key=0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80 \
+      --rln-relay-cred-path=/keystore.json \
+      --rln-relay-cred-password=password123 \
+      --spammer=true \
+      --spammer-delay-between-msg=200 &
+done
+```
 🎯**Goals**:
 
-- TODO:
+- Connect a spamming node(s) to the network where spam messages are rejected and misbehaving peers are disconnected for a time.
+- See how the network reacts to different spamming rates.
 
 👀**Observability**:
 
-- TODO:
+- Check the logs of the new node logs, ensuring the behaviour matches the expected.
+- Check grafana metrics at `localhost:3001`.
+- Check that the RLN membership was registered in the block explorer `localhost:3000`.