From e4aaa9ce7251aa2ea50844c6ff089eddfb3a20b7 Mon Sep 17 00:00:00 2001
From: Evgeny Poberezkin <evgeny@poberezkin.com>
Date: Sun, 7 Sep 2025 12:36:37 +0100
Subject: [PATCH] flush

---
 src/Simplex/Messaging/Server.hs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Simplex/Messaging/Server.hs b/src/Simplex/Messaging/Server.hs
index fa6d17eee..bc88d6cc9 100644
--- a/src/Simplex/Messaging/Server.hs
+++ b/src/Simplex/Messaging/Server.hs
@@ -2124,7 +2124,9 @@ exportMessages tty ms f drainMsgs = do
       msgs <-
         unsafeRunStore q "saveQueueMsgs" $
           getQueueMessages_ drainMsgs q =<< getMsgQueue ms q False
-      unless (null msgs) $ BLD.hPutBuilder h $ encodeMessages (recipientId q) msgs
+      unless (null msgs) $ do
+        BLD.hPutBuilder h $! encodeMessages (recipientId q) msgs
+        hFlush h
       pure $ Sum $ length msgs
     encodeMessages rId = mconcat . map (\msg -> BLD.byteString (strEncode $ MLRv3 rId msg) <> BLD.char8 '\n')