The first section shows a post to https://podasp.com/user/login, with args
as shown right under the Content-Length line. There's a cookie, so you'll
want to send that too. The response is "302 Found" with a Location header,
which is a redirect. All that translates to something like this:

  curl -b jar.txt -c jar.txt -s -S -L -o loginoutput.html \
  -d "user%5Blogin%5D=foo&user%5Bpassword%5D=foobar&commit=Login" \
  https://podasp.com/user/login

The next thing of interest is GETting the episode list:

   curl -b jar.txt -c jar.txt -s -S -L -o episodelist.html \
    https://podasp.com/episode/list

followed by getting the new episode list:

   curl -b jar.txt -c jar.txt -s -S -L -o episodenew.html \
    https://podasp.com/episode/new

That gets you to the point where you'd be make the post you originally asked
about, but I've never had occasion to do a multipart/form-data post, so I'll
stop there... :) You might be able to skip the episode/list & episode/new
GETs, as nothing exciting is happening with cookies there. On the other
hand, the server may be associating things with your session to remember
where you went, and if so it might not play nice if you don't follow the
right sequence.

Ralph Mitchell

On 11/23/05, Chris Dawson <xrdawson_at_gmail.com> wrote:
>
> I captured the output but am still not sure how to read the output and
> convert to a curl statement. Can someone help me with a little more
> information?
>
> http://webcastinabox.com/projects/podasp/livehttp.txt
>
> Thanks, I am learning a lot!
>
> Chris
>
> On 11/23/05, Daniel Stenberg <daniel_at_haxx.se> wrote:
> >
> > On Tue, 22 Nov 2005, Chris Dawson wrote:
> >
> > > I am trying to make a post to an HTTPS server with curl. The server
> > > requires me to login and store a session cookie which I can then use
> > on
> > > subsequent requests, and this works fine. I cannot make a file post,
> > > however, and am unsure why. I used --trace trace.txt and this
> > provides me
> > > with a trace file that indicates the server has responded with
> > "Expectation
> > > failed." I don't really know what to make of this.
> >
> > You should use LiveHTTPHeaders and capture a session you do manually,
> > and then
> > compare that with the trace from curl. It should give you a pretty good
> > idea
> > of what the differences are.
> >
> > > More context: the form which I am posting to has several variables
> > which I
> > > think I need to post as well. So, the form looks like this:
> > >
> > > <form>
> > > <input type="text" name="episode[title]">
> > > <input type="text" name="episode[description]">
> > > <input type="file" name="episode_mp3_file">
> > > <submit>
> > > </form>
> > >
> > > The command I am using for curl is this:
> > > curl -b jar.txt -c jar.txt --trace trace.txt -k -F "episode_mp3_file=@
> > > small.mp3" https://podasp.com/episode/create
> >
> > So your command line doesn't add two of the parts, which very well might
> > be
> > the reason for the server's message.
> >
> > > Does this indicate that I am not sending the form variables
> > "episode[title]"
> > > for example?
> >
> > I would assume so.
> >
> > > I think the server does require at least some of these variables in
> > order to
> > > process the request, but this error message seems to me to be before
> > the
> > > upload even begins, so I wonder how the server knows to do this.
> >
> > It could possibly be that the server requires the fields to come in a
> > specific
> > order and it checks them immediately on "arrival" and thus can reject
> > the POST
> > early. But this is pure speculations on my behalf.
> >
> > > I tried to post form variables alongside the file post (with -d
> > > "episode[title]=Upload") but I got a complaint: "You can only select
> > one
> > > HTTP request!"
> >
> > You need to add those parts with -F as well. -d implies a "plain" POST,
> > while
> > -F builds a series of parts for a multipart formpost.
> >
> > --
> > Commercial curl and libcurl Technical Support:
> > http://haxx.se/curl.html
> >
>
>
Received on 2005-11-24