*/
extern int tftp_stream_open(connection_info_t *info, int *err);
-extern int tftp_stream_read(char *buf, int len, int *err);
+extern int tftp_stream_read(void *buf, int len, int *err);
extern void tftp_stream_close(int *err);
extern void tftp_stream_terminate(bool abort, int (*getc)(void));
extern char *tftp_error(int err);