Re: socket.http returns "No such file or directory" instead of http code on Solaris while running in Lane

[Petr Man <petr@...>]

On Tue, Mar 8, 2011 at 09:13, Peter Odding <peter@peterodding.com> wrote:
> Coming from Linux my first instinct would be to run your script under
> strace [1] to see where the error code occurs. I'm not sure if strace is
> available on Solaris, but if it's not maybe similar tools exist? Looking
> at Wikipedia it mentions Truss and DTrace, maybe give one of those a
> try? Good luck!

Good morning,
I didn't think of strace, thanks. But I still don't know what is going on.

Without the lane, the relevant part of the truss output looks like this:

/1:	connect(3, 0xFFBFF020, 16, SOV_DEFAULT)		= 0
/1:	send(3, 0x0006C378, 16, 0)			= 16
/1:	   G E T   /   H T T P / 1 . 1\r\n
/1:	send(3, 0x0006C470, 81, 0)			= 81
/1:	   h o s t :   o l l i e\r\n t e :   t r a i l e r s\r\n c o n n e
/1:	   c t i o n :   c l o s e ,   T E\r\n u s e r - a g e n t :   L u
/1:	   a S o c k e t   2 . 0 . 2\r\n\r\n
/1:	recv(3, 0x00068200, 8192, 0)			Err#11 EAGAIN
/1:	pollsys(0xFFBFE920, 1, 0xFFBFE9A8, 0x00000000)	= 1
/1:	recv(3, 0x00068200, 8192, 0)			= 238
<snip> page content
/1:	recv(3, 0x00068200, 8192, 0)			Err#11 EAGAIN
/1:	pollsys(0xFFBFE920, 1, 0xFFBFE9A8, 0x00000000)	= 1
/1:	recv(3, 0x00068200, 8192, 0)			= 132
<snip> page content
/1:	recv(3, 0x00068200, 8192, 0)			Err#11 EAGAIN
/1:	pollsys(0xFFBFE920, 1, 0xFFBFE9A8, 0x00000000)	= 1
/1:	recv(3, " 0\r\n\r\n", 8192, 0)			= 5
/1:	fcntl(3, F_GETFL)				= 130
/1:	fcntl(3, F_SETFL, FWRITE)			= 0
/1:	close(3)					= 0


With the request in the lane, it looks pretty much the same, except
the pollsys() call doesn't come anymore.


/3:	connect(3, 0xFED7B7F8, 16, SOV_DEFAULT)		= 0
/3:	send(3, 0x000851E0, 16, 0)			= 16
/3:	   G E T   /   H T T P / 1 . 1\r\n
/3:	send(3, 0x000852D8, 81, 0)			= 81
/3:	   h o s t :   o l l i e\r\n t e :   t r a i l e r s\r\n c o n n e
/3:	   c t i o n :   c l o s e ,   T E\r\n u s e r - a g e n t :   L u
/3:	   a S o c k e t   2 . 0 . 2\r\n\r\n
/3:	recv(3, 0x00081068, 8192, 0)			Err#11 EAGAIN
/3:	fcntl(3, F_GETFL)				= 130
/3:	fcntl(3, F_SETFL, FWRITE)			= 0
/3:	close(3)					= 0



Could anyone try for me the following code for me on some other
platform then Windows/Solaris? I would like to know if it is Solaris
specific problem.


require("lanes")

local worker = lanes.gen("*",
    function(uri)
        local http = require("socket.http")
        page, code, headers = http.request {
            method = "GET",
            url = uri
        }
        return {code}
    end
)

local mylane = worker("http://example.com";)
print(mylane[1][1])


Thanks,
Petr