X-Git-Url: https://mattmccutchen.net/rsync/rsync.git/blobdiff_plain/bb25779de7afb3e5a803c81ba6526b92f829c12b..753849fdbcf8df0a408135be469f620bb74f2ab5:/io.c

diff --git a/io.c b/io.c
index a7603ff8..571f1ff7 100644
--- a/io.c
+++ b/io.c
@@ -1715,6 +1715,11 @@ void start_write_batch(int fd)
 	 * actual communication so far depends on whether a daemon
 	 * is involved. */
 	write_int(batch_fd, protocol_version);
+	if (protocol_version >= 30) {
+		int sub = protocol_version == PROTOCOL_VERSION
+		        ? SUBPROTOCOL_VERSION : 0;
+		write_varint(batch_fd, sub);
+	}
 	write_int(batch_fd, checksum_seed);
 
 	if (am_sender)