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RE: How do you post multipart/form-data?

From: Norbert Piega <npiega@SeeBeyond.com>
Date: Mon, 11 Dec 2000 12:40:37 -0500 (EST)
Message-ID: <9B85913BDA568742B72DAF6DF54ECBC6012BD202@mail01.stc.com>
To: "'Steinar Bang'" <sb@metis.no>, www-lib@w3.org
Steinar,

Thanks a lot!!

HTAnchor_addFormatParam(src,"boundary",boundary);

was the clincher.

Thanks for the useful links as well.

-Norbert


>>-----Original Message-----
>>From: Steinar Bang [mailto:sb@metis.no]
>>Sent: Sunday, December 10, 2000 11:25 AM
>>To: www-lib@w3.org
>>Subject: Re: How do you post multipart/form-data?
>>
>>
>>>>>>> Norbert Piega <npiega@SeeBeyond.com>:
>>
>>> Anybody out there with sample code for
>>> posting multipart/form-data using libwww?  
>>
>>I don't have any code in a usable shareable form.  Basically you have
>>to build a multipart/form-data request yourself.  I build it into a
>>char* buffer.  Some things to be aware of:
>> 1. all part header lines and boundary lines must be CRLF separated
>> 2. the boundary between the parts starts with two "-" characters, 
>>    the rest of the boundary, is what's given as the "boundary"
>>    parameter to the multipart/form-data MIME type
>> 3. the terminating boundary has two extra "-" characters trailing it
>>
>>If "char* data" is a buffer holding the part set up above, and "char*
>>boundary" is a text variable holding the boundary (except for the
>>stuff added in 2 and 3), and "char* url" is the address you're POSTing
>>to, the code for setting up the request, is something like this (NB!
>>not tested as runnable code):
>>    ...
>>    HTParentAnchor* src = HTTmpAnchor(NULL);
>>    HTAnchor_setDocument(src,data);
>>    HTAnchor_setLength(src,strlen(data));
>>    HTRequest* request = HTRequest_new();
>>    HTAnchor_setFormat(src,HTAtom_for("multipart/form-data"));
>>    HTAnchor_addFormatParam(src,"boundary",boundary);
>>    HTAnchor* dest = HTAnchor_findAddress(url);
>>    int status = HTPutAnchor(src,dest,request);
>>    ...
>>
>>Some references:
>> [1] RFC2388, the definition of the multipart/form-data MIME type
>>	<http://www.ietf.org/rfc/rfc2388.txt>
>> [2] RFC2046, section 5 describes multiparts, and the syntax of
>>     multipart boundaries
>>	<http://www.ietf.org/rfc/rfc2046.txt>
>>
Received on Monday, 11 December 2000 12:42:24 GMT

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