Re: [cpp-netlib-devel] Assumption about response headers

[Ivan J. <ijo...@gm...>]

On Fri, Jun 4, 2010 at 7:52 PM, Dean Michael Berris
<mik...@gm...>wrote:

> Hi Ivan,
>
> On Sat, Jun 5, 2010 at 12:51 AM, Ivan Johannessen
> <ijo...@gm...> wrote:
> > Hi Dean,
> > I've just downloaded library and built the http_client.cpp sample.
>
> What version did you download?
>
> I downloaded the 0.6.1 tag and pulled in the changes from the 0.7 branch
that allowed me to compile without SSL support.

> > Testing
> > it out by giving it the URL: http://www.google.com results in a "Missing
> > Transfer Encoding" exception. Looking the code in
> sync_connection_base.hpp I
> > see that either a Content-Length or Transfer-Encoding header is required.
> > However, the response fromwww.google.com does not contain a message
> body(I
> > assume because the Connection:close header was included in the request),
> > thus the presence of either of those headers are optional.  Thoughts?
>
> Actually I would say it's because the client in the HTTP example
> doesn't follow directs automatically (IIRC). I need to check this.
>
> The 0.6.1 version has an HTTP client that is HTTP/1.1 compliant and
> thus should support already HTTP/1.0 responses from servers. In the
> HTTP/1.1 spec, the server's HTTP/1.1 response *should* contain either
> a Transfer-Encoding header, or a Content-Length header.
>
> In the case of the example, I don't think it adds the
> "follow_redirects" constructor option. I'll dig into it later but can
> you check whether the response is an HTTP 200 or an HTTP 302?
>
> The http_client.cpp do follow redirects and the response is a HTTP/1.1
response with status 200. This issue is by no means a show stopper for me
but I pointed it out because I believe it is in disagreement of the RFC:
http://www.w3.org/Protocols/rfc2616/rfc2616.html

I could not find anything in the RFC that stated that a response without a
body "should" or "must" contain either headers.


> Thanks and I hope this helps!
>
> --
> Dean Michael Berris
> deanberris.com
>
>
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