tracing: connection closed tracepoint

src/net.cpp

@@ -53,6 +53,7 @@
 #include <optional>
 #include <unordered_map>
 
+TRACEPOINT_SEMAPHORE(net, closed_connection);
 TRACEPOINT_SEMAPHORE(net, evicted_inbound_connection);
 TRACEPOINT_SEMAPHORE(net, inbound_connection);
 TRACEPOINT_SEMAPHORE(net, outbound_connection);
@@ -563,6 +564,13 @@ void CNode::CloseSocketDisconnect()
     if (m_sock) {
         LogDebug(BCLog::NET, "Resetting socket for peer=%d%s", GetId(), LogIP(fLogIPs));
         m_sock.reset();
+
+        TRACEPOINT(net, closed_connection,
+            GetId(),
+            m_addr_name.c_str(),
+            ConnectionTypeAsString().c_str(),
+            ConnectedThroughNetwork(),
+            Ticks<std::chrono::seconds>(m_connected));
     }
     m_i2p_sam_session.reset();
 }