From 49e8cf89d83339ae44ec8f155d8e40dfef1da2aa Mon Sep 17 00:00:00 2001
From: orignal <i2porignal@yandex.ru>
Date: Wed, 6 Oct 2021 12:42:32 -0400
Subject: [PATCH] don't send short tunnel build messages for ElGamal only
 destinations

---
 libi2pd/TunnelPool.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libi2pd/TunnelPool.cpp b/libi2pd/TunnelPool.cpp
index b349ada6..5ed330c8 100644
--- a/libi2pd/TunnelPool.cpp
+++ b/libi2pd/TunnelPool.cpp
@@ -610,6 +610,9 @@ namespace tunnel
 			Path path;
 			if (SelectPeers (path, false))
 			{
+				if (m_LocalDestination && !m_LocalDestination->SupportsEncryptionType (i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD))
+					path.isShort = false; // because can't handle ECIES encrypted reply
+				
 				std::shared_ptr<TunnelConfig> config;
 				if (m_NumOutboundHops > 0)
 					config = std::make_shared<TunnelConfig>(path.peers, inboundTunnel->GetNextTunnelID (),