From 5c3b4090d2eb13c70394ef786d369074d1e37d51 Mon Sep 17 00:00:00 2001
From: Jeff Becker <jeff@i2p.rocks>
Date: Mon, 14 Jun 2021 08:17:44 -0400
Subject: [PATCH] dont mark inbound sessions as outbound when we get a DNS
 lookup for it

---
 llarp/handlers/tun.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/llarp/handlers/tun.cpp b/llarp/handlers/tun.cpp
index 7ab8f1dcb..e6dba331f 100644
--- a/llarp/handlers/tun.cpp
+++ b/llarp/handlers/tun.cpp
@@ -397,6 +397,13 @@ namespace llarp
                                          service::Address addr, auto msg, bool isV6) -> bool {
         using service::Address;
         using service::OutboundContext;
+        if(HasInboundConvo(addr))
+        {
+          // if we have an inbound convo to this address don't mark as outbound so we don't have a state race
+          // this codepath is hit when an application verifies that reverse and forward dns records match for an inbound session
+          SendDNSReply(addr, this, msg, reply, isV6);
+          return true;
+        }
         MarkAddressOutbound(addr);
         return EnsurePathToService(
             addr,
@@ -424,6 +431,7 @@ namespace llarp
                                          service::Address addr, auto msg) -> bool {
         using service::Address;
         using service::OutboundContext;
+        // TODO: how do we handle SRV record lookups for inbound sessions?
         MarkAddressOutbound(addr);
         return EnsurePathToService(
             addr,