From ccd51d289e0e2fb9bdf83a955caff1c5d66820ca Mon Sep 17 00:00:00 2001
From: An Tao <antao2002@gmail.com>
Date: Mon, 22 Jun 2020 19:55:24 +0800
Subject: [PATCH] Destroy DNS resolver of HttpClient in the correct thread
 (#490)

---
 lib/src/HttpClientImpl.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/src/HttpClientImpl.cc b/lib/src/HttpClientImpl.cc
index 7e5c1548..e02ac352 100644
--- a/lib/src/HttpClientImpl.cc
+++ b/lib/src/HttpClientImpl.cc
@@ -192,6 +192,11 @@ HttpClientImpl::HttpClientImpl(trantor::EventLoop *loop,
 HttpClientImpl::~HttpClientImpl()
 {
     LOG_TRACE << "Deconstruction HttpClient";
+    if (resolverPtr_ && !(loop_->isInLoopThread()))
+    {
+        // Make sure the resolverPtr_ is destroyed in the correct thread.
+        loop_->queueInLoop([reolverPtr = resolverPtr_]() {});
+    }
 }
 
 void HttpClientImpl::sendRequest(const drogon::HttpRequestPtr &req,