From 13f6dc1b27e914134d29accace3cd323e8c2a717 Mon Sep 17 00:00:00 2001
From: Kittywhiskers Van Gogh <63189531+kwvg@users.noreply.github.com>
Date: Tue, 6 Aug 2024 07:26:00 +0000
Subject: [PATCH] merge bitcoin#26844: Pass MSG_MORE flag when sending
 non-final network messages

---
 src/net.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/net.cpp b/src/net.cpp
index 42f3ad6b49..be1650eb6f 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -950,7 +950,13 @@ size_t CConnman::SocketSendData(CNode& node)
             if (!node.m_sock) {
                 break;
             }
-            nBytes = node.m_sock->Send(reinterpret_cast<const char*>(data.data()) + node.nSendOffset, data.size() - node.nSendOffset, MSG_NOSIGNAL | MSG_DONTWAIT);
+            int flags = MSG_NOSIGNAL | MSG_DONTWAIT;
+#ifdef MSG_MORE
+            if (it + 1 != node.vSendMsg.end()) {
+                flags |= MSG_MORE;
+            }
+#endif
+            nBytes = node.m_sock->Send(reinterpret_cast<const char*>(data.data()) + node.nSendOffset, data.size() - node.nSendOffset, flags);
         }
         if (nBytes > 0) {
             node.m_last_send = GetTime<std::chrono::seconds>();