Thanks for the tip. I guess I still do not know HTTP that well :-)
I looked at the multi-part, it looks like I can render EntityBody as parts
in the message, but I also need to render the HTTP request line as well:
odata batch format:
--boundary_xx
Content-Type: application/http
Content-Transfer-Encoding: binary
RequestLine... e.g. PUT ...
RequestBody... e.g. { "jsonstuff": ... }
Playing with your modified snippet shows that the body parts get into the
message.
How would I get the Request Line above the actual entity body for each part?
It's almost like having an EntityBody being a HttpRequest itself.
This almost works:
val xm = Multipart.General(MediaTypes.`multipart/mixed`,
Multipart.General.BodyPart.Strict(HttpEntity.Strict(ContentTypes.`application/json`,
ByteString("json1"))),
Multipart.General.BodyPart.Strict(HttpEntity.Strict(ContentTypes.`application/json`,
ByteString("json2"))),
Multipart.General.BodyPart.Strict(HttpEntity.Strict(ContentTypes.`application/json`,
ByteString("json3")))
)
Await.result(xm.toEntity(HttpCharsets.`UTF-8`,
"batch_456").dataBytes.map(_.utf8String).runWith(Sink.head), 1 seconds)
--batch_456
Content-Type: application/json
json1
--batch_456
Content-Type: application/json
json2
--batch_456
Content-Type: application/json
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