From 1a307f309314dcef4daa02858e26b498eeb9e00b Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Mon, 23 Feb 2015 15:06:14 -0500
Subject: [PATCH] limit number of transit tunnels

---
 I2NPProtocol.cpp | 3 ++-
 I2NPProtocol.h   | 2 ++
 I2PControl.cpp   | 2 +-
 3 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/I2NPProtocol.cpp b/I2NPProtocol.cpp
index 8326dc55..f2ef9ec1 100644
--- a/I2NPProtocol.cpp
+++ b/I2NPProtocol.cpp
@@ -280,7 +280,8 @@ namespace i2p
 			
 				i2p::crypto::ElGamalDecrypt (i2p::context.GetEncryptionPrivateKey (), record + BUILD_REQUEST_RECORD_ENCRYPTED_OFFSET, clearText);
 				// replace record to reply			
-				if (i2p::context.AcceptsTunnels ())
+				if (i2p::context.AcceptsTunnels () && 
+					i2p::tunnel::tunnels.GetTransitTunnels ().size () <= MAX_NUM_TRANSIT_TUNNELS)
 				{	
 					i2p::tunnel::TransitTunnel * transitTunnel = 
 						i2p::tunnel::CreateTransitTunnel (
diff --git a/I2NPProtocol.h b/I2NPProtocol.h
index de91df73..5bb94062 100644
--- a/I2NPProtocol.h
+++ b/I2NPProtocol.h
@@ -97,6 +97,8 @@ namespace i2p
 	const uint8_t DATABASE_LOOKUP_TYPE_ROUTERINFO_LOOKUP = 0x08; // 1000			
 	const uint8_t DATABASE_LOOKUP_TYPE_EXPLORATORY_LOOKUP = 0x0C; // 1100
 
+	const int MAX_NUM_TRANSIT_TUNNELS = 1500;
+
 namespace tunnel
 {		
 	class InboundTunnel;
diff --git a/I2PControl.cpp b/I2PControl.cpp
index 0432ea34..4183476d 100644
--- a/I2PControl.cpp
+++ b/I2PControl.cpp
@@ -309,7 +309,7 @@ namespace client
 
 	void I2PControlService::TunnelsParticipatingHandler (std::map<std::string, std::string>& results)
 	{
-		results[I2P_CONTROL_ROUTER_INFO_TUNNELS_PARTICIPATING] = boost::lexical_cast<std::string>(i2p::tunnel::tunnels.GetTransitTunnels ().size ());;
+		results[I2P_CONTROL_ROUTER_INFO_TUNNELS_PARTICIPATING] = boost::lexical_cast<std::string>(i2p::tunnel::tunnels.GetTransitTunnels ().size ());
 	}
 
 // RouterManager