io_start_buffering_out(f_out);
if (protocol_version >= 31 || (!filesfrom_host && protocol_version >= 23))
io_start_multiplex_in(f_in);
io_start_buffering_out(f_out);
if (protocol_version >= 31 || (!filesfrom_host && protocol_version >= 23))
io_start_multiplex_in(f_in);