From ff89edf1272c0146e05f4381193ab53ecad7b75e Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Mon, 5 Apr 2021 18:22:48 -0400
Subject: [PATCH] pick random introducer

---
 libi2pd/SSU.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libi2pd/SSU.cpp b/libi2pd/SSU.cpp
index b3118c96..bc036d51 100644
--- a/libi2pd/SSU.cpp
+++ b/libi2pd/SSU.cpp
@@ -513,9 +513,10 @@ namespace transport
 				std::shared_ptr<SSUSession> introducerSession;
 				const i2p::data::RouterInfo::Introducer * introducer = nullptr;
 				// we might have a session to introducer already
+				auto offset = rand ();
 				for (int i = 0; i < numIntroducers; i++)
 				{
-					auto intr = &(address->ssu->introducers[i]);
+					auto intr = &(address->ssu->introducers[(offset + i)%numIntroducers]);
 					if (!intr->iPort) continue; // skip invalid introducer
 					if (intr->iExp > 0 && ts > intr->iExp) continue; // skip expired introducer
 					boost::asio::ip::udp::endpoint ep (intr->iHost, intr->iPort);