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-rw-r--r--src/p2p/net_node.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/p2p/net_node.h b/src/p2p/net_node.h
index 20520f83c..4f2d2b4cf 100644
--- a/src/p2p/net_node.h
+++ b/src/p2p/net_node.h
@@ -214,7 +214,7 @@ namespace nodetool
void add_upnp_port_mapping(uint32_t port);
void delete_upnp_port_mapping(uint32_t port);
template<class t_callback>
- bool try_ping(basic_node_data& node_data, p2p_connection_context& context, t_callback cb);
+ bool try_ping(basic_node_data& node_data, p2p_connection_context& context, const t_callback &cb);
bool try_get_support_flags(const p2p_connection_context& context, std::function<void(p2p_connection_context&, const uint32_t&)> f);
bool make_expected_connections_count(PeerType peer_type, size_t expected_connections);
void cache_connect_fail_info(const epee::net_utils::network_address& addr);