1 files changed, 4 insertions, 1 deletions
diff --git a/command.h b/command.h
index 68ec014..23f38ff 100644
--- a/command.h
+++ b/command.h
@@ -4,7 +4,10 @@
 #include "conn_data.h"
 
 
-#define PROTOCOL_VERSION 3
+// Protocol version 4 adds the 'sendat' command; if the client reports not to
+// support sendat, we just disable that command. In this manner, we continue to
+// support protocol version 3.
+#define PROTOCOL_VERSION 4
 #define MIN_SUPPORTED_PROTOCOL_VERSION 3