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RE: Using the HTTPManager to make a POST

From: Laird, Brian <BLaird@perseco.com>
Date: Thu, 20 Mar 2003 16:27:29 -0600
Message-ID: <45A6279F82E4CA4BBDC0F4EFC7B6A2FE126C60@atlas.perseco.com>
To: <www-jigsaw@w3.org>

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_URLENCODED);

Brian

>  -----Original Message-----
> From: 	Laird, Brian  
> Sent:	Thursday, March 20, 2003 2:48 PM
> To:	'www-jigsaw@w3.org'
> 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 session cookies.  The problem I am having is getting the POST data to be sent as a part of the original POST.  According to the packet sniffer I have, the 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 what I am doing wrong, I would really appreciate it.
> 
> Thanks in advance for any help,
> Brian            
>            
> 
> 
> 	HttpManager manager = HttpManager.getManager();
>             org.w3c.www.protocol.http.Request server_request = manager.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 = request.enumerateHeaderDescriptions();
>             while ( e.hasMoreElements() ) {
>                 HeaderDescription d = (HeaderDescription) e.nextElement();
>                 HeaderValue       v = request.getHeaderValue(d);
>                 if ( v != null )
>                 server_request.setHeaderValue(d, v);
>             }
> 
>             server_request.removeHeader("keep-alive");
>             // By removing that HOST, we make sure the real Host header gets
>             // computed by the client side API
>             server_request.setHeaderValue(org.w3c.www.protocol.http.Request.H_HOST,null);
> 
>             // build the post data
>             PipedOutputStream output_stream = new PipedOutputStream();
>             OutputStreamWriter writer = new OutputStreamWriter(output_stream);
>             PipedInputStream input_stream = new PipedInputStream(output_stream);
>             StringBuffer post_data = new StringBuffer();
>             post_data.append(getUsernameField());
>             post_data.append("=");
>             post_data.append(username);
>             post_data.append("&");
>             post_data.append(getPasswordField());
>             post_data.append("=");
>             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 = manager.runRequest(server_request);
>             cookieList = reply.getCookie();
> 
Received on Thursday, 20 March 2003 17:27:39 GMT

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