From a69eade1f4359be6fe53b1f30c0ae5185a713b96 Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Sun, 25 Aug 2024 21:35:33 -0400
Subject: [PATCH] use pool's rng for random tunnel/remote lease selection

---
 libi2pd/Datagram.cpp | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/libi2pd/Datagram.cpp b/libi2pd/Datagram.cpp
index 3f2fc8d0..5db072a4 100644
--- a/libi2pd/Datagram.cpp
+++ b/libi2pd/Datagram.cpp
@@ -417,7 +417,14 @@ namespace datagram
 					auto sz = ls.size();
 					if (sz)
 					{
-						auto idx = rand() % sz;
+						int idx = -1;
+						if (m_LocalDestination)
+						{
+							auto pool = m_LocalDestination->GetTunnelPool ();
+							if (pool)
+								idx = m_LocalDestination->GetTunnelPool ()->GetRng ()() % sz;
+						}
+						if (idx < 0) idx = rand () % sz;
 						path->remoteLease = ls[idx];
 					}
 					else
@@ -443,7 +450,14 @@ namespace datagram
 				auto sz = ls.size();
 				if (sz)
 				{
-					auto idx = rand() % sz;
+					int idx = -1;
+					if (m_LocalDestination)
+					{
+						auto pool = m_LocalDestination->GetTunnelPool ();
+						if (pool)
+							idx = m_LocalDestination->GetTunnelPool ()->GetRng ()() % sz;
+					}
+					if (idx < 0) idx = rand () % sz;
 					path->remoteLease = ls[idx];
 				}
 				else