ASP - server to server file transfer - multipart/form-data encoding RFC 1867
Hello,
I am working with a webservice that accepts file uploads. I am stuck using classic ASP to consume this service and am having a heck of a time figuring out how to send files.
The webservice requests that files be sent using multipart/form-data encoding per RFC 1867. I have not been able to figure out how to do this with classic ASP. I am very well versed in posting data/headers using XMLHTTP via classic ASP. I simply can't figure out how to send the file.
Any help will be greatly appreciated!
I am working with a webservice that accepts file uploads. I am stuck using classic ASP to consume this service and am having a heck of a time figuring out how to send files.
The webservice requests that files be sent using multipart/form-data encoding per RFC 1867. I have not been able to figure out how to do this with classic ASP. I am very well versed in posting data/headers using XMLHTTP via classic ASP. I simply can't figure out how to send the file.
Any help will be greatly appreciated!
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> how do I attach my file?
All you are doing in this piece of code is posting fname=john and lname=doe and file=nothing.
If you are talking about physically uploading a file to another server, you need to look at the docs for that webservice. Nothing in your code here looks like it will upload a file.
All you are doing in this piece of code is posting fname=john and lname=doe and file=nothing.
If you are talking about physically uploading a file to another server, you need to look at the docs for that webservice. Nothing in your code here looks like it will upload a file.
>>postData = "fname=john&lname=doe&file
That is formatting for enctype="application/x-www
Since you want to "upload" a file, you need to format the data using "form-data" formatting. This is shown on Section 6 of:
http://www.ietf.org/rfc/rfc1867.txt
Basically you need set your variable postData to something similar to:
where <CRLF> is vbCrLF if you are using VBScript.
<BOUNDARY_TOKEN> is some random alphanumeric string/identifier of your choosing.
Lastly, where you see <FILE_CONTENT>, you will need to replace it with the content of the file you want to upload.
You can find functions to read text files or binary files here:
http://www.motobit.com/tips/detpg_read-write-binary-files/
That is formatting for enctype="application/x-www
Since you want to "upload" a file, you need to format the data using "form-data" formatting. This is shown on Section 6 of:
http://www.ietf.org/rfc/rfc1867.txt
Basically you need set your variable postData to something similar to:
Content-Type: multipart/form-data, boundary=<BOUNDARY_TOKEN><CRLF>
<CRLF>
--<BOUNDARY_TOKEN><CRLF>
Content-Disposition: form-data; name="fname"<CRLF>
<CRLF>
john<CRLF>
--<BOUNDARY_TOKEN><CRLF>
Content-Disposition: form-data; name="lname"<CRLF>
<CRLF>
doe<CRLF>
--<BOUNDARY_TOKEN><CRLF>
Content-Disposition: form-data; name="file"; filename="file1.gif"<CRLF>
Content-Type: image/gif<CRLF>
Content-Transfer-Encoding: binary<CRLF>
<CRLF>
<FILE_CONTENT><CRLF>
--<BOUNDARY_TOKEN>--where <CRLF> is vbCrLF if you are using VBScript.
<BOUNDARY_TOKEN> is some random alphanumeric string/identifier of your choosing.
Lastly, where you see <FILE_CONTENT>, you will need to replace it with the content of the file you want to upload.
You can find functions to read text files or binary files here:
http://www.motobit.com/tips/detpg_read-write-binary-files/
ASKER
Thanks for info but I think I've already got that covered. Here is my current code:
myURL = "http://mywebservice.com"
myToken = "123456"
postData = "fname=john&lname=doe&file
Set o = server.CreateObject("MSXML
o.open "POST", myURL, false
o.setRequestHeader "Content-Type", "multipart/form-data"
o.setRequestHeader "Authorization", myToken
o.send postData
My question is: how do I attach my file? What do I need to do to pull it from my server and push it through with this request as the "file" parameter?
Thanks!