From 793d7954eff81190843f9f1196a6b1e319730b23 Mon Sep 17 00:00:00 2001
From: evoskuil <eric@voskuil.org>
Date: Sat, 16 May 2026 15:46:54 -0400
Subject: [PATCH] Socket body writer requires non-empty buffer to write empty.

---
 src/messages/http_body.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/messages/http_body.cpp b/src/messages/http_body.cpp
index 1385587ca..90bd64c2c 100644
--- a/src/messages/http_body.cpp
+++ b/src/messages/http_body.cpp
@@ -111,6 +111,7 @@ void body::writer::init(boost_code& ec) NOEXCEPT
     {
         [&] (std::monostate&) NOEXCEPT
         {
+            ec = {};
         },
         [&](auto& write) NOEXCEPT
         {
@@ -132,8 +133,16 @@ body::writer::out_buffer body::writer::get(boost_code& ec) NOEXCEPT
     {
         [&] (std::monostate&) NOEXCEPT
         {
+            ec = {};
             return out_buffer{};
         },
+        [&](empty_writer&) NOEXCEPT
+        {
+            ec = {};
+
+            // Socket body writer requires non-empty buffer to write empty.
+            return out_buffer{ std::make_pair(asio::const_buffer{}, false) };
+        },
         [&](auto& write) NOEXCEPT
         {
             try