RE: Using the HTTPManager to make a POST

On Thu, 20 Mar 2003, Laird, Brian wrote:

>
> I found another post in the list archive which helped me.  I needed to
> set the content type to be form encoded, and then everything was fine.
>
> server_request.setContentType(MimeType.APPLICATION_X_WWW_FORM_URLENCODE=
D);

It depends on what you send :) but the "usual" thing is indeed to use thi=
s
mime type.
You may also find some code snippets in Winie [1] to do PUT (pretty
similar to POST from a HTTPManager point of view).

[1] http://jigsaw.w3.org/Winie/

>
> Brian
>
> >  -----Original Message-----
> > From: 	Laird, Brian
> > Sent:	Thursday, March 20, 2003 2:48 PM
> > To:	'[email protected]'
> > Subject:	Using the HTTPManager to make a POST
> >
> > I am looking to perform a login to a remote server, so I have written=
 a filter which performs the sign in and then sends the user their sessio=
n cookies.  The problem I am having is getting the POST data to be sent a=
s a part of the original POST.  According to the packet sniffer I have, t=
he post data is being sent in a separate message as a HTTP Continue, but =
the backend server replies prior to getting the request formatted as the =
HTTP Continue.  Below is my code snippet, if someone could let me know wh=
at I am doing wrong, I would really appreciate it.
> >
> > Thanks in advance for any help,
> > Brian
> >
> >
> >
> > 	HttpManager manager =3D HttpManager.getManager();
> >             org.w3c.www.protocol.http.Request server_request =3D mana=
ger.createRequest();
> >             server_request.setMethod(HTTP.POST);
> >             server_request.setURL(new URL(getLoginURL()));
> >             server_request.setAllowUserInteraction(false);
> >             server_request.setCookie(request.getCookie());
> >
> >             // Update the client request fields:
> >             Enumeration e =3D request.enumerateHeaderDescriptions();
> >             while ( e.hasMoreElements() ) {
> >                 HeaderDescription d =3D (HeaderDescription) e.nextEle=
ment();
> >                 HeaderValue       v =3D request.getHeaderValue(d);
> >                 if ( v !=3D null )
> >                 server_request.setHeaderValue(d, v);
> >             }
> >
> >             server_request.removeHeader("keep-alive");
> >             // By removing that HOST, we make sure the real Host head=
er gets
> >             // computed by the client side API
> >             server_request.setHeaderValue(org.w3c.www.protocol.http.R=
equest.H_HOST,null);
> >
> >             // build the post data
> >             PipedOutputStream output_stream =3D new PipedOutputStream=
();
> >             OutputStreamWriter writer =3D new OutputStreamWriter(outp=
ut_stream);
> >             PipedInputStream input_stream =3D new PipedInputStream(ou=
tput_stream);
> >             StringBuffer post_data =3D new StringBuffer();
> >             post_data.append(getUsernameField());
> >             post_data.append("=3D");
> >             post_data.append(username);
> >             post_data.append("&");
> >             post_data.append(getPasswordField());
> >             post_data.append("=3D");
> >             post_data.append(getPassword());
> >             writer.write(post_data.toString());
> >             writer.flush();
> > 	// if I don't do this the runRequest never completes
> >             writer.close();
> >             server_request.setOutputStream(input_stream);
> >             Reply reply =3D manager.runRequest(server_request);
> >             cookieList =3D reply.getCookie();
> >
>

--=20
Yves Lafon - W3C
"Baroula que barouleras, au ti=E9u toujou t'entourneras."