* until len is available, or it returns failure.
*
* Both functions return 1 on success, 0 on failure.
+ *
+ * sftp_sendbuffer returns the size of the backlog of data in the
+ * transmit queue.
*/
int sftp_senddata(char *data, int len);
+int sftp_sendbuffer(void);
int sftp_recvdata(char *data, int len);
/*