Re: [basex-talk] Send multipart binary with http client

Hi Max,

I think I still need some more information on the missing pieces. For example, which process is hidden behind localhost:4567? Is there some RESTXQ code as well?

On the body, I've tried method="basex" because the docs says this

would write raw bytes to the request

Which docs do you refer to?

Thanks in advance, Christian

On Wed, Feb 1, 2017 at 3:47 PM, Maximilian Gärber mgaerber@arcor.de wrote:

Hi,

just try to send for example an image file (e.g. attached) with the code below [1]. It will always be base64 (and when I uncomment the "Content-Transfer-Encoding" header it will appear twice)

You would need something like Fiddler (https://www.telerik.com/download/fiddler) to intercept the request an see what is going on.

This is the shortest example I could create.

Best, Max

[1]

let $name := "grass.jpg"
let $path := "upload/files/"
let $url := concat("http://localhost:4567", "/file/meta")
return _:send-multipart($url, $name, $path)

declare function _:send-multipart($url, $file-name, $path) as item()* {

let $uri := file:path-to-uri($path || $file-name) let $type := fetch:content-type($uri) let $binary := file:read-binary($path || $file-name)

let $req := <http:request method="post" send-authorization="false" override-media-type="text/plain">

   <http:header name="Accept" value="application/json"/>
   <http:header name="Accept-Encoding" value="gzip, deflate"/>

   <http:multipart media-type="multipart/form-data">

<!--  <http:header name="Content-Transfer-Encoding" value="binary"/>  -->
      <http:header name="Content-Disposition" value='form-data;

name="FILE"; filename="{$file-name}"'/>

      <http:body media-type="{$type}"/>

  </http:multipart>
</http:request>

let $resp := http:send-request($req, $url, $binary) return json:parse($resp[2]) };

2017-02-01 15:01 GMT+01:00 Christian Grün christian.gruen@gmail.com:

...

Hi Max,

Thanks for the hint. I’ll be glad to fix this, but I think I need an example, or step-by-step description, how to reproduce this quickly. Do you think that would be possible?

Cheers from the other side of the lake, Christian

On Wed, Feb 1, 2017 at 2:57 PM, Maximilian Gärber mgaerber@arcor.de wrote:

...

Hi,

the decision for base64 is now hardcoded: https://github.com/BaseXdb/basex/commit/b48318abaf3a406d6e34253694c8e33e6628...

Browser for example just send files in raw binary, so most other software (including jetty) does not know how to handle form-data with base64 encoding.

Regards, Max

2017-01-30 19:16 GMT+01:00 Christian Grün christian.gruen@gmail.com:

...

Hi Max,

Do you have an MCVE for us?

Thanks in advance, Christian

Am 30.01.2017 4:24 nachm. schrieb "Maximilian Gärber" mgaerber@arcor.de:

Hi,

this seems related to https://github.com/BaseXdb/basex/issues/1203

Problem 1: When setting Content-Transfer-Encoding manually (via http:header), it will appear twice in the request that is sent

Problem 2: I cannot override base64 because it happens automatically based on the content I am sending and for some reason the web server that receives this request does not recognize the base64 encoding correctly

Regards,

Max

2017-01-30 15:35 GMT+01:00 Maximilian Gärber mgaerber@arcor.de:

...

Hi,

I can't figure out how to send a file in binary (not base64) when using multipart [1]

On the body, I've tried method="basex" because the docs says this would write raw bytes to the request

Regards, Max

[1]

declare function _:send-multipart($url, $file-name, $path) as item()* {

let $uri := file:path-to-uri($path || $file-name) let $type := fetch:content-type($uri)

let $binary := file:read-binary($path || $file-name) let $boundary_id := concat("batch_", random:uuid())

let $req := <http:request method="post" send-authorization="false" override-media-type="text/plain">

   <http:header name="Accept" value="application/json"/>
   <http:header name="Accept-Encoding" value="gzip, deflate"/>

  <http:multipart media-type="multipart/form-data"

boundary="{$boundary_id}">

    <http:header name="Content-Transfer-Encoding" value="binary"/>
    <http:header name="Content-Disposition" value="form-data;

name='FILE'; filename='{$file-name}'"/> <http:header name="Content-Type" value="{$type}"/>

     <!-- method="basex"   method="adaptive"  ? -->
    <http:body media-type="application/octet-stream" method="binary">
      {$binary}
    </http:body>

  </http:multipart>
</http:request>

let $resp := http:send-request($req, $url) return json:parse($resp[2])

};