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comp.lang.ruby

Webrick override HTTPResponse::setup_header

andrey

4/18/2008 10:39:00 AM

Hi, all.

My subj solution:

class MyServlet < HTTPServlet::AbstractServlet
def do_GET(req, res)
class <<res
def setup_header()
... my code ...
end
end
....
end
....
end

I think my solution is't good and is't true ruby way.
Another solution?
5 Answers

Eric Hodel

4/18/2008 8:30:00 PM

0

On Apr 18, 2008, at 03:40 AM, andrey wrote:
> My subj solution:
>
> class MyServlet < HTTPServlet::AbstractServlet
> def do_GET(req, res)
> class <<res
> def setup_header()
> ... my code ...
> end
> end
> ....
> end
> ....
> end
>
> I think my solution is't good and is't true ruby way.
> Another solution?

What are you trying to accomplish with this code?

Daniel Finnie

4/19/2008 2:10:00 AM

0

Hi,

As Eric said, it's not obvious what end result you are expecting but
it appears you want to change the headers of the response. If so, you
can do something like this:

class MyServlet < HTTPServlet::AbstractServlet
def do_Get(req, res)
res["header_name"] = "header_value"
...
end
end

Webrick is not very well documented but the method names and their
source code are available here: http://ruby-doc.o...

Dan

On Fri, Apr 18, 2008 at 6:40 AM, andrey <Andrey.D.Nikitin@gmail.com> wrote:
> Hi, all.
>
> My subj solution:
>
> class MyServlet < HTTPServlet::AbstractServlet
> def do_GET(req, res)
> class <<res
> def setup_header()
> ... my code ...
> end
> end
> ....
> end
> ....
> end
>
> I think my solution is't good and is't true ruby way.
> Another solution?
>
>

Daniel Finnie

4/19/2008 2:11:00 PM

0

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andrey

4/19/2008 3:06:00 PM

0

On 19 ???, 18:44, Daniel Finnie <d...@danfinnie.com> wrote:
> To clear out all of the existing headers you can use
> res.instance_variable_set("@header", {"header_name" => "header_value",
> "other_header_name" => "other_header_value"})

Yes, but after exiting do_Get() Webrick add self headers:

def do_GET(req, res)
...
res.instance_variable_set("@header",
{"header_name" => "header_value",
"other_header_name" =>
"other_header_value"})
...
end

% nc localhost 60001
HEAD /mjpeg.cgi HTTP/1.0

HTTP/1.1 200 OK
Connection: close
Date: Sat, 19 Apr 2008 14:52:47 GMT
Content-Type:text/html
Server: WEBrick/1.3.1 (Ruby/1.8.5/2006-08-25)
Other_header_name: other_header_value
Header_name: header_value

Simon Krahnke

4/23/2008 12:42:00 AM

0

* andrey <Andrey.D.Nikitin@gmail.com> (2008-04-19) schrieb:

> On 19 апÑ?, 18:44, Daniel Finnie <d...@danfinnie.com> wrote:
>> To clear out all of the existing headers you can use
>> res.instance_variable_set("@header", {"header_name" => "header_value",
>> "other_header_name" => "other_header_value"})
>
> Yes, but after exiting do_Get() Webrick add self headers:

If you want to change the Content-Type, use

req['Content-Type'] = 'application/x-my-world'

mfg, simon .... l