From 3244fe1b0f87e476d8e210493aad00fe5f13caf1 Mon Sep 17 00:00:00 2001
From: zzz <zzz@i2pmail.org>
Date: Tue, 20 Jul 2021 10:44:38 -0400
Subject: [PATCH] Tunnels: Add check for prop. 157 layer enc. type
---
.../src/net/i2p/router/tunnel/pool/BuildHandler.java | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/router/java/src/net/i2p/router/tunnel/pool/BuildHandler.java b/router/java/src/net/i2p/router/tunnel/pool/BuildHandler.java
index cdf51362e8..f6eb4ee224 100644
--- a/router/java/src/net/i2p/router/tunnel/pool/BuildHandler.java
+++ b/router/java/src/net/i2p/router/tunnel/pool/BuildHandler.java
@@ -803,6 +803,16 @@ class BuildHandler implements Runnable {
//if ( (response == 0) && (_context.random().nextInt(50) <= 1) )
// response = TunnelHistory.TUNNEL_REJECT_PROBABALISTIC_REJECT;
+ if (response == 0) {
+ // only in short build request, otherwise 0
+ int type = req.readLayerEncryptionType();
+ if (type != 0) {
+ if (_log.shouldWarn())
+ _log.warn("Unsupported layer enc. type: " + type);
+ response = TunnelHistory.TUNNEL_REJECT_BANDWIDTH;
+ }
+ }
+
long recvDelay = now - state.recvTime;
if (response == 0) {
--
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