updates

Author: mavlevin

helper.h

@@ -8,6 +8,7 @@
 // client communication helpers
 bool handle_get_version(int client_fd, char* client_str);
 void respond_str_to_client(int fd, char* str);
+void respond_buff_to_client(int fd, char* buff, int buff_len);
 
 int get_int_from_client(int fd);
 bool get_str_from_client(int fd, char* str);