From 7179bb2f6ee4fea8239ee47f55e1ef38998c82a2 Mon Sep 17 00:00:00 2001
From: Cayman <caymannava@gmail.com>
Date: Thu, 1 Aug 2024 11:29:01 -0400
Subject: [PATCH] Add GetENR

---
 specs/phase0/p2p-interface.md | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/specs/phase0/p2p-interface.md b/specs/phase0/p2p-interface.md
index bc29b9ad92..ef016e69f4 100644
--- a/specs/phase0/p2p-interface.md
+++ b/specs/phase0/p2p-interface.md
@@ -50,6 +50,7 @@ It consists of four main sections:
       - [BeaconBlocksByRoot](#beaconblocksbyroot)
       - [Ping](#ping)
       - [GetMetaData](#getmetadata)
+      - [GetENR](#getenr)
   - [The discovery domain: discv5](#the-discovery-domain-discv5)
     - [Integration into libp2p stacks](#integration-into-libp2p-stacks)
     - [ENR structure](#enr-structure)
@@ -931,6 +932,29 @@ The response MUST be encoded as an SSZ-container.
 
 The response MUST consist of a single `response_chunk`.
 
+##### GetENR
+
+**Protocol ID:** `/eth2/beacon_chain/req/enr/1/`
+
+No Request Content.
+
+Response Content:
+
+```
+(
+  ENR
+)
+```
+
+Requests the [ENR](https://github.com/ethereum/devp2p/blob/master/enr.md) of a peer.
+The request opens and negotiates the stream without sending any request content.
+Once established the receiving peer responds with
+it's local most up-to-date ENR.
+
+The response MUST be encoded as an RLP-encoded ENR, treated as an SSZ-list of bytes (`List[byte, 300]`).
+
+The response MUST consist of a single `response_chunk`.
+
 ### The discovery domain: discv5
 
 Discovery Version 5 ([discv5](https://github.com/ethereum/devp2p/blob/master/discv5/discv5.md)) (Protocol version v5.1) is used for peer discovery.