Feature #4735
openAdd multipart support in HTTP client
0%
Description
As documented, multipart HTTP requests and responses are not currently supported properly by the Saxon-JS HTTP client (ixsl:schedule-action/@http-request
).
See https://www.saxonica.com/saxon-js/documentation/index.html#!development/http :
Note that multipart HTTP requests are not currently implemented. Some rules anticipate these being available.
Multipart responses are not currently properly handled. A multipart response will be returned as one text/plain body in body (rather than an array of body parts in multipart-bodies.)
It has always been on the todo list to extend the support for multipart HTTP messages, but there has been no progress on this for some time.
The lack of support is an issue for sending FormData
by HTTP. See notes #4732#note-4 and #4732#note-6 in Issue Support #4732: Upgrading AtomGraph application from Saxon-CE to Saxon-JS 2.
Updated by Debbie Lockett about 4 years ago
For the specific problem with sending FormData
by HTTP (as raised in Support issue #4732), there is a JavaScript work around which could be an option, except it is not currently possible with the Saxon-JS HTTP client (ixsl:schedule-action/@http-request
).
Usually to send FormData
as the request body, the media-type
should be multipart/form-data
, and the boundary
must be set. (See https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/POST)
A JavaScript work around for sending FormData
is to not set the Content-Type
header explicitly, but rather to leave it undefined and to let XMLHttpRequest
in the browser set it to supply the boundary automatically (see https://stackoverflow.com/questions/40351429/formdata-how-to-get-or-set-boundary-in-multipart-form-data-angular).
However this is not possible with ixsl:schedule-action/@http-request
, because here the media-type
is mandatory (in the supplied $request
map).
We should review this condition, since even in the absence of full support for multipart HTTP requests, making media-type
optional could allow support for sending FormData
.
Updated by Community Admin over 3 years ago
- Applies to JS Branch 2 added
- Applies to JS Branch deleted (
2.0)
Updated by Norm Tovey-Walsh over 2 years ago
- Sprint/Milestone set to SaxonJS 3.0
Updated by Norm Tovey-Walsh about 2 years ago
N.B. I know of at least one user who's working around this limitation in POJS.
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