set_in_skip
set_in_skip(con, tail_len);
set_in_skip(con, resid + remaining);
set_in_skip(con, con->v2.in_cursor.total_resid + remaining);
set_in_skip(con, resid + con->v2.in_enc_resid);
set_in_skip(con, resid + remaining);
set_in_skip(con, resid);