Creating a cfhttp multi part form post for google docs upload

Question

Hey all,
If you saw my last thread, you know I am working with google docs and uploading documents to it. Well I got basic document uploading working, but now I am trying to include meta data. Google requires you to include the metadata with the actual file data and seperate them by using a multi part form upload. I don't know exactly the process for doing so, but they have a handy code snippet of the desired results at
http://code.google.com/apis/documents/docs/3.0/developers_guide_protocol.html#UploadingDoc s
So I am basically trying to mimic that payload, however I am continually getting an error stating that there are no parts in a multi part form upload.
<errors xmlns='http://schemas.google.com/g/2005'><error><domain>GData</domain><code>InvalidEntryException</code><internalReason>No parts detected in multipart message</internalReason></error></errors>
to be exact. I am not really sure what I am doing wrong here. I figure it is one of two things, either I am not including the actual data in the payload properly (I am currently using a body type param for the payload, but I have also tried a formfield named content to deliver it. Neither worked). So maybe I need to do something else tricky there? The other thing which I am not reallly sure about is the content-length attribute. I don't know exactly how to calculate that, and I read in another forum that a content length attribute was messing that guy up. Right now I am just taking the lenght of the payload string and multiplying by 8 (to get the number of bytes for the entire payload) but hell if I know if that is right. It could be I just don't know how to set up the parts for the message, it seems pretty straight forward though. Just define a boundary in the content-type, then put two dashes before it wherever you define a new part, and two dashes trailing the last part.
Anyway, here is my code, any help is much appreciate. I'm a bit beyond my expertise here (not really used to trying to have to roll my own http requests, nevermind multipart post form data) so I'm kinda flailing around. Thanks again.
<cffunction name="upload" access="public" returnType="any" hint="I upload the document." output="false">
    <cfargument name="filePath" type="string" required="false" hint="file to upload.">
    <cfargument name="docType" type="string" required="yes" hint="The document type to identify this document see google list api supported documents">
    <cfargument name="parentCollectionId" type="string" required="no" hint="the name of the collection/collection to create (include collection%3A)">
    <cfargument name="metaData" type="struct" required="no" hint="structure containing meta data. Keyname is attribute name, value is the value">
    <cfset var result = structnew()>
    <cfset result.success = true>
    <cftry>
        <cfif structkeyexists(arguments,"parentCollectionId")>
                  <cfset arguments.parentCollectionId = urlencodedformat(parentCollectionId)>             
                  <cfset result.theUrl = "https://docs.google.com/feeds/default/private/full/#arguments.parentCollectionId#/contents">
            <cfelse>
                    <cfset result.theUrl = "https://docs.google.com/feeds/default/private/full/">
        </cfif>
         <cfoutput>
              <cffile action="read" file="#arguments.filePath#" variable="theFile">
            <cfsavecontent variable="atomXML">
                 Content-Type: application/atom+xml
                <?xml version='1.0' encoding='UTF-8'?>
                <entry xmlns="http://www.w3.org/2005/Atom" xmlns:docs="http://schemas.google.com/docs/2007">
                  <category scheme="http://schemas.google.com/g/2005##kind"
                      term="http://schemas.google.com/docs/2007###arguments.docType#"/>
                    <cfloop collection="#arguments.metaData#" item="key">
                        <#key#>#arguments.metadata[key]#</#key#>
                    </cfloop>
                </entry>
                --END_OF_PART
                Content-Type: text/plain
                #theFile#
                --END_OF_PART--
            </cfsavecontent>       
        </cfoutput>      
        <cfset result.postData = atomXML>
        <cfhttp url="#result.theUrl#" method="post" result="httpRequest" charset="utf-8" multipart="yes">
            <cfhttpparam type="header" name="Authorization" value="GoogleLogin auth=#getAuth()#">
            <cfhttpparam type="header" name="GData-Version" value="3">
            <cfhttpparam type="header" name="Content-Length" value="#len(trim(atomXML))*8#">           
            <cfhttpparam type="header" name="Content-Type" value="multipart/related; boundary=END_OF_PART">
            <cfhttpparam type="header" name="Slug" value="test file --END_OF_PART">
            <cfhttpparam type="body" name="content" value="#trim(atomXML)#">
        </cfhttp>
        <cftry>
               <cfset packet = xmlParse(httpRequest.fileContent)>
            <cfif httpRequest.statusCode neq "201 created">
                <cfthrow message="HTTP Error" detail="#httpRequest.fileContent#" type="HTTP CODE #httpRequest.statusCode#">
            </cfif>
            <cfset result.data.resourceId = packet.entry['gd:resourceId'].xmlText>
            <cfset result.data.feedLink = packet.entry['gd:feedLink'].xmlText>
            <cfset result.data.title = packet.entry.title.xmlText>  
            <cfset result.data.link = packet.entry.title.xmlText>    
            <cfcatch>
                 <cfset result.data = httpRequest>
            </cfcatch>
        </cftry>       
        <cfcatch type="any">
             <cfset result.error = cfcatch>
            <cfset result.success = false>
        </cfcatch>
    </cftry>   
    <cfreturn result>
</cffunction>
Also, this is what my atomXML data ended up looking like when it got sent to google. This isn't the WHOLE request (it doesn't include the headers, just the body).
Content-Type: application/atom+xml
<?xml version='1.0' encoding='UTF-8'?>
<entry xmlns="http://www.w3.org/2005/Atom" xmlns:docs="http://schemas.google.com/docs/2007">
<category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/docs/2007#document"/>
<TITLE>Woot Test</TITLE> </entry>
--END_OF_PART
Content-Type: text/plain
I'm a test document lol!
--END_OF_PART--

Answer 1

Woot, I got it. I had to send the gData version number, and change the URL.
Here is the working function.
<cffunction name="upload" access="public" returnType="any" hint="I upload the document." output="false">
    <cfargument name="myFile" type="string" required="false" hint="file to upload.">
    <cfset var result = "">
    <cfset theUrl = "https://docs.google.com/feeds/default/private/full">
    <cffile action="read" file="C:\website\xerointeractive\testing\test.txt" variable="theFile">
    <cfset fileSize = createObject("java","java.io.File").init("C:\website\xerointeractive\testing\test.txt").length()>
    <cfhttp url="#theURL#" method="post" result="result" charset="utf-8" >
        <cfhttpparam type="header" name="Authorization" value="GoogleLogin auth=#getAuth()#">
        <cfhttpparam type="header" name="Content-Type" value="text/plain">
        <cfhttpparam type="header" name="Slug" value="test file">
        <cfhttpparam type="header" name="GData-Version" value="3">
        <cfhttpparam type="header" name="Content-Length" value="#fileSize#">
        <cfhttpparam type="body" value="#theFile#">
    </cfhttp>
    <cfreturn result>
</cffunction>