From 0b03d91d21c20bf8606ebc6ead347ce3105af745 Mon Sep 17 00:00:00 2001
From: Stefan <stefan@nimiq.com>
Date: Thu, 7 Nov 2024 11:44:58 +0100
Subject: [PATCH] Mempool syncer: check peer for necessary service flag when
 adding it dynamically

---
 mempool/src/sync/mod.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/mempool/src/sync/mod.rs b/mempool/src/sync/mod.rs
index fae20f959f..01e0035765 100644
--- a/mempool/src/sync/mod.rs
+++ b/mempool/src/sync/mod.rs
@@ -22,6 +22,7 @@ use nimiq_consensus::{sync::syncer::SyncEvent, ConsensusProxy};
 use nimiq_hash::{Blake2bHash, Hash};
 use nimiq_network_interface::{
     network::Network,
+    peer_info::Services,
     request::{request_handler, RequestError},
 };
 use nimiq_time::sleep_until;
@@ -193,7 +194,11 @@ impl<N: Network> MempoolSyncer<N> {
 
     /// Add peer to discover its mempool
     fn add_peer(&mut self, peer_id: N::PeerId) {
-        if self.peers.contains(&peer_id) {
+        if self.peers.contains(&peer_id)
+            || !self
+                .network
+                .peer_provides_services(peer_id, Services::MEMPOOL)
+        {
             return;
         }