FASTCGI bugs

Started by dexter, November 15, 2011, 04:15:10 AM

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dexter

November 15, 2011, 04:15:10 AM Last Edit: December 31, 1969, 04:00:00 PM by Guest
I am testing fastcgi with all kind of thing



Now I met the first problem , it seems  newlisp eval-string will change %; to be none.

here is


Code Select

<%
(print "Content-type: text/htmlrnrn")
 
;(module "web.lsp")
;(Web:send-headers)
 

%>

<html>
<body>
<div style ="height:30px;width:100%; background:black;"></div>
<div>
<%
    (print (string "It works newlisp with module web " (date)) )
%>

</div>

</body>
</html>



It will output like this:


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<html>
<body>
<div style ="height:30px;width:100It works newlisp with module web Tue Nov 15 20:07:16 2011

</div>

</body>
</html>



you see, width:100%;backgound.... to  width:100

why?

newlisp will change %; ??



I use put-page code  from module CGI ,I think this code is ok


Code Select

(define (put-page file-name , page start end)
    (set 'page (read-file file-name))
    (set 'start (find "<%" page))
    (set 'end (find "%>" page))
    (while (and start end)
        (print (slice page 0 start))
        (eval-string (slice page (+ start 2) (- end start 2)) MAIN (print   (last-error)))
        ;(if-not (nil? err-ret)   (print (string err-ret)))
        (set 'page (slice page (+ end 2)))
        (set 'start (find "<%" page))
        (set 'end (find "%>" page)))
    (print page))






https://github.com/guu/newlisp-fastcgi/blob/master/fcgi.lsp">https://github.com/guu/newlisp-fastcgi/ ... r/fcgi.lsp">https://github.com/guu/newlisp-fastcgi/blob/master/fcgi.lsp

sunmountain

#1
November 15, 2011, 05:27:43 AM Last Edit: December 31, 1969, 04:00:00 PM by Guest
There is probably no bug there.

Are you using FCGI_printf ?

Then % starts a format specifier, which might eventually misinterpreted by the underlying vfprintf implementation.



You could try to mask the % with another %, so writing something like this:


Code Select

<%
(print "Content-type: text/htmlrnrn")

;(module "web.lsp")
;(Web:send-headers)


%>

<html>
<body>
<div style ="height:30px;width:100%%; background:black;"></div>
<div>
<%
    (print (string "It works newlisp with module web " (date)) )
%>

</div>

</body>
</html>


Take a look http://www.cplusplus.com/reference/clibrary/cstdio/vfprintf/">here.

dexter

#2
November 15, 2011, 05:49:31 PM Last Edit: December 31, 1969, 04:00:00 PM by Guest
True

thanks



But it's not perfect if  user need change % to %% by hand



So I add (replace "%" str "%%")



continue testing

sunmountain

#3
November 16, 2011, 03:05:35 AM Last Edit: December 31, 1969, 04:00:00 PM by Guest
Quote
But it's not perfect if user need change % to %% by hand

That is not neccessary if you take FCGI_puts as underlying "printer".

dexter

#4
November 17, 2011, 01:17:31 AM Last Edit: December 31, 1969, 04:00:00 PM by Guest
hmm...



First I used FCGI_puts



then it is not perfect too, it'll add a n after everyline



Sot last



I use FCGI_putchar to do everything.



I hope FCGI_putchar wont be slow.



:)

sunmountain

#5
November 17, 2011, 03:10:12 AM Last Edit: December 31, 1969, 04:00:00 PM by Guest
Perhaps you could just create your own function, which takes care of all the issues,

or you use define-macro, to reduce the runtime overhead.



Using a putchar on a string means you need to iterate over a list of chars,


Code Select
printf("%sn","Hello, World!")

is one call (one library call), putchar would need 14 calls, not to mention the work needed to extract

every char out of the string.



So the question is: how long do call FastCGI fast ?

dexter

#6
November 17, 2011, 04:58:55 AM Last Edit: December 31, 1969, 04:00:00 PM by Guest
actually



it is not slowly as we thought



I used webbench to test



webbench -t 10 -c 1000 url



I did not see the different speed between printf  and putchar



maybe it is the same speed ?



I dont know how long FASTCGI calls by the way



And yes, I can write a function to get libfcgi's  stdin stdout etc handles

 so that I can use "fwrite" "fprintf"  to work. better



But if I do that, it means I need to edit the libfcgi



Which I dont think it is  important, cause If somebody really want to  create a web site by runnig newlisp with fatcgi mode

He can do it in many ways



Such as complie a new version of newlisp , include fcgi_stdio.h to wrapper the basic C functions to work like fastcgi

I think it is possible and a very easy way

But if lutz can work on that, I think he'll create a perfect newlisp-fcgi,

He knows everything about newlisp.



Second

He can you printf ,which means FCGI_printf ,just need a little focus on % to %%, it is easy,too

and everyone can do it right now



To be honset with you

I am a bit lazy

And for now ,I did not see the lower speed because of putchar



my fastcgi code runnig even faster than php , on webbench test results

One newlisp fastcgi process faster than 10 php-cgis ,Cool ,right?

on my mac book 466



So I may not want to change putchar to printf ,or create some own functions now



LOL
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