From 3221f451a0d8deffcfe677a9d39ca2f6d7b43cc2 Mon Sep 17 00:00:00 2001
From: Wayne Davison <wayned@samba.org>
Date: Sat, 26 Feb 2005 06:43:15 +0000
Subject: [PATCH] Calling maybe_send_keepalive() for protocol_version < 29 is
 now supported, though we can only try to flush the output buffer if we're in
 a lull.

---
 io.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/io.c b/io.c
index 7d44962f..035362e9 100644
--- a/io.c
+++ b/io.c
@@ -639,6 +639,8 @@ void maybe_send_keepalive(int allowed_lull, int ndx)
 {
 	if (time(NULL) - last_io >= allowed_lull) {
 		if (!iobuf_out || !iobuf_out_cnt) {
+			if (protocol_version < 29)
+				return; /* there's nothing we can do */
 			write_int(sock_f_out, ndx);
 			write_shortint(sock_f_out, ITEM_IS_NEW);
 		}
-- 
2.34.1