From 1f220e4d4db22fb56226b4f42f3e1eb52286d42f Mon Sep 17 00:00:00 2001
From: Grga <mimirz@proton.me>
Date: Wed, 3 Dec 2025 09:31:07 +0100
Subject: [PATCH] Added log if initial peers are invalid

---
 CHANGELOG.md                                  |  3 +++
 node/src/reducer.rs                           | 27 ++++++++++++++++++-
 .../network/kad/p2p_network_kad_reducer.rs    |  1 +
 p2p/src/network/kad/p2p_network_kad_state.rs  |  2 ++
 4 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2c8b393624..2e3a95a1df 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   Dashboard, documenting all endpoints and specific data fields used by the
   frontend ([#1566](https://github.com/o1-labs/mina-rust/issues/1566))
 
+- **Feature**: Add logging if initial peers are invalid
+  ([#1703](https://github.com/o1-labs/mina-rust/pull/1703))
+
 ### Fixed
 
 - **Docker Compose**: Fix frontend black screen issue by changing environment
diff --git a/node/src/reducer.rs b/node/src/reducer.rs
index 1b358f68de..56e11e5eea 100644
--- a/node/src/reducer.rs
+++ b/node/src/reducer.rs
@@ -17,7 +17,32 @@ pub fn reducer(
     let meta = action.meta().clone();
     match action.action() {
         Action::CheckTimeouts(_) => {
-            if state.p2p.ready().is_some() {
+            if let Some(p2p) = state.p2p.ready() {
+                if let Some(kad_state) = &p2p.network.scheduler.discovery_state {
+                    if p2p.ready_peers().is_empty() && kad_state.has_bootstraped {
+                        if let Some(tip) = &state.transition_frontier.best_tip_breadcrumb() {
+                            // TODO: this might need to change in future
+                            if tip.height() == 296372 {
+                                let initial_peers = state
+                                    .p2p
+                                    .config()
+                                    .initial_peers
+                                    .iter()
+                                    .map(|opts| opts.to_string())
+                                    .collect::<Vec<_>>()
+                                    .join(", ");
+
+                                crate::core::error!(
+                                    crate::core::log::system_time();
+                                    summary = "Exiting",
+                                    error = "Invalid initial peers",
+                                    initial_peers = initial_peers
+                                );
+                            }
+                        }
+                    }
+                }
+
                 if let Err(error) =
                     P2pState::p2p_timeout_dispatch(Substate::new(state, dispatcher), &meta)
                 {
diff --git a/p2p/src/network/kad/p2p_network_kad_reducer.rs b/p2p/src/network/kad/p2p_network_kad_reducer.rs
index fb0e78e386..a007fa1afb 100644
--- a/p2p/src/network/kad/p2p_network_kad_reducer.rs
+++ b/p2p/src/network/kad/p2p_network_kad_reducer.rs
@@ -133,6 +133,7 @@ impl super::P2pNetworkKadState {
                     time: meta.time(),
                     stats: bootstrap_state.stats.clone(),
                 };
+                state.has_bootstraped = true;
                 Ok(())
             }
             (_, P2pNetworkKademliaAction::UpdateRoutingTable { peer_id, addrs }) => {
diff --git a/p2p/src/network/kad/p2p_network_kad_state.rs b/p2p/src/network/kad/p2p_network_kad_state.rs
index 88f70b1168..541aaef538 100644
--- a/p2p/src/network/kad/p2p_network_kad_state.rs
+++ b/p2p/src/network/kad/p2p_network_kad_state.rs
@@ -60,6 +60,7 @@ pub struct P2pNetworkKadState {
     pub streams: StreamState<P2pNetworkKadStreamState>,
     pub status: P2pNetworkKadStatus,
     pub filter_addrs: bool,
+    pub has_bootstraped: bool,
 }
 
 impl Default for P2pNetworkKadState {
@@ -74,6 +75,7 @@ impl Default for P2pNetworkKadState {
                 .ok()
                 .and_then(|s| s.parse().ok())
                 .unwrap_or(true),
+            has_bootstraped: false,
         }
     }
 }