From f2b8562813925e1de805e8cd0a3c5b17f019a504 Mon Sep 17 00:00:00 2001
From: cryptozoidberg <crypto.zoidberg@gmail.com>
Date: Wed, 16 Oct 2019 22:53:46 +0200
Subject: [PATCH] fix of the levin(stolen from @moneromooo-monero)

---
 contrib/epee/include/net/levin_protocol_handler_async.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/contrib/epee/include/net/levin_protocol_handler_async.h b/contrib/epee/include/net/levin_protocol_handler_async.h
index 7d000632..c3cdd02d 100644
--- a/contrib/epee/include/net/levin_protocol_handler_async.h
+++ b/contrib/epee/include/net/levin_protocol_handler_async.h
@@ -220,6 +220,11 @@ public:
   bool add_invoke_response_handler(const callback_t& cb, uint64_t timeout,  async_protocol_handler& con, int command)
   {
     CRITICAL_REGION_LOCAL(m_invoke_response_handlers_lock);
+    if (m_protocol_released)
+    {
+      LOG_PRINT_L0("ERROR: Adding response handler to a released object");
+      return false;
+    }
     boost::shared_ptr<invoke_response_handler_base> handler(boost::make_shared<invoke_handler<callback_t>>(cb, timeout, con, command));
     m_invoke_response_handlers.push_back(handler);
     LOG_PRINT_L4("[LEVIN_PROTOCOL" << this << "] INVOKE_HANDLER_QUE: PUSH_BACK RESPONSE HANDLER");