server/protocol: Protocol version negotiation

1 files changed, 4 insertions, 0 deletions

diff --git a/command.h b/command.h
index 3b01f42..e1226a5 100644
--- a/command.h
+++ b/command.h
@@ -4,6 +4,10 @@
 #include "conn_data.h"
 
 
+#define PROTOCOL_VERSION 1
+#define MIN_SUPPORTED_PROTOCOL_VERSION 1
+
+
 // Returns true if socket should be closed.
 // Modifies some bytes in `line`, AS WELL AS line[linelen]!
 bool handle_input_line(struct conn_data *data,char *line,size_t linelen);