From 43939cedf4aa0ba2db17b96ba424f132daf9f079 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Sun, 27 Oct 2024 22:19:06 -0400
Subject: [PATCH] random tunnel reject when medium congestion

---
 libi2pd/Tunnel.cpp | 3 ++-
 libi2pd/Tunnel.h   | 4 ++++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/libi2pd/Tunnel.cpp b/libi2pd/Tunnel.cpp
index c41bb775..1e2a75d9 100644
--- a/libi2pd/Tunnel.cpp
+++ b/libi2pd/Tunnel.cpp
@@ -350,7 +350,8 @@ namespace tunnel
 
 	Tunnels::Tunnels (): m_IsRunning (false), m_Thread (nullptr), m_MaxNumTransitTunnels (DEFAULT_MAX_NUM_TRANSIT_TUNNELS),
 		m_TotalNumSuccesiveTunnelCreations (0), m_TotalNumFailedTunnelCreations (0), // for normal average
-		m_TunnelCreationSuccessRate (TCSR_START_VALUE), m_TunnelCreationAttemptsNum(0)
+		m_TunnelCreationSuccessRate (TCSR_START_VALUE), m_TunnelCreationAttemptsNum(0),
+		m_Rng(i2p::util::GetMonotonicMicroseconds ()%1000000LL)
 	{
 	}
 
diff --git a/libi2pd/Tunnel.h b/libi2pd/Tunnel.h
index 00a05386..02bfb374 100644
--- a/libi2pd/Tunnel.h
+++ b/libi2pd/Tunnel.h
@@ -18,6 +18,7 @@
 #include <thread>
 #include <mutex>
 #include <memory>
+#include <random>
 #include "util.h"
 #include "Queue.h"
 #include "Crypto.h"
@@ -244,6 +245,8 @@ namespace tunnel
 			uint32_t GetMaxNumTransitTunnels () const { return m_MaxNumTransitTunnels; };
 			int GetCongestionLevel() const { return m_MaxNumTransitTunnels ? CONGESTION_LEVEL_FULL * m_TransitTunnels.size() / m_MaxNumTransitTunnels : CONGESTION_LEVEL_FULL; }
 
+			std::mt19937& GetRng () { return m_Rng; };
+			
 		private:
 
 			template<class TTunnel>
@@ -307,6 +310,7 @@ namespace tunnel
 			int m_TotalNumSuccesiveTunnelCreations, m_TotalNumFailedTunnelCreations;
 			double m_TunnelCreationSuccessRate;
 			int m_TunnelCreationAttemptsNum;
+			std::mt19937 m_Rng;
 
 		public: