From 82e87ffb7c336fda8952bce024b714bff4abd31f Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Thu, 20 Feb 2025 19:42:10 -0500
Subject: [PATCH] Fix #2068

---
 httplib.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/httplib.h b/httplib.h
index 6296e2d..6d91a43 100644
--- a/httplib.h
+++ b/httplib.h
@@ -7333,6 +7333,16 @@ inline ClientImpl::ClientImpl(const std::string &host, int port,
       client_cert_path_(client_cert_path), client_key_path_(client_key_path) {}
 
 inline ClientImpl::~ClientImpl() {
+  // Wait until all the requests in flight are handled.
+  size_t retry_count = 10;
+  while (retry_count-- > 0) {
+    {
+      std::lock_guard<std::mutex> guard(socket_mutex_);
+      if (socket_requests_in_flight_ == 0) { break; }
+    }
+    std::this_thread::sleep_for(std::chrono::microseconds{1});
+  }
+
   std::lock_guard<std::mutex> guard(socket_mutex_);
   shutdown_socket(socket_);
   close_socket(socket_);