Cannot upload file to ktor server using ktor client - file-upload

Question

I have setup server according to docs and try to upload file using code from this question:
val parts: List<PartData> = formData {
append(
"image",
InputProvider { ins.asInput() },
Headers.build {
this[HttpHeaders.ContentType] = "image/png"
this[HttpHeaders.ContentDisposition] = "filename=$name"
}
)
}
return HttpClient(Apache) {
install(Logging) {
logger = Logger.DEFAULT
level = LogLevel.ALL
}
}.submitFormWithBinaryData(formData = parts) {
url("$baseUrl/images")
}
If I use it as is (without request Content-Type), then server fails: "Content-Type header is required for multipart processing".
If I try to add header, client fails: "Header Content-Type is controlled by the engine and cannot be set explicitly".
Then it's actually something strange happening.
According to client logs, it's sending content type:
REQUEST: http://localhost:8090/images
METHOD: HttpMethod(value=POST)
COMMON HEADERS
-> Accept: */*
-> Accept-Charset: UTF-8
CONTENT HEADERS
BODY Content-Type: multipart/form-data; boundary=-675255df42a752ee167beaab-5799548c6088f411-a7e8dc449d68ab028c44d80-42b
BODY START
[request body omitted]
...
But on server side headers are completly different:
Accept-Charset [UTF-8]
Accept [*/*]
User-Agent [Ktor client]
Transfer-Encoding [chunked]
Host [localhost:8090]
Connection [Keep-Alive]
On other hand I can successfully upload file using okhttp (and headers actually matches):
val logging = HttpLoggingInterceptor(object : HttpLoggingInterceptor.Logger {
override fun log(message: String ) {
println(message)
}
})
logging.level = HttpLoggingInterceptor.Level.BODY
val client = OkHttpClient.Builder()
.addInterceptor(logging)
.build()
val file = File("image.png")
val part: MultipartBody.Part = MultipartBody.Part.Companion.createFormData(
"image",
"image.png",
file.asRequestBody("image/png".toMediaTypeOrNull())
)
val request = Request.Builder()
.url("http://localhost:8090/images")
.post(MultipartBody.Builder().addPart(part).build())
.build()
val res = client.newCall(request).execute()
res.body
Is it bug in ktor client or I missing something?
edit:
Both client and server versions is 1.4.1.
Corresponding gradle dependencies parts:
implementation("io.ktor:ktor-server-core:${ktor_version}")
implementation("io.ktor:ktor-server-netty:${ktor_version}")
implementation("io.ktor:ktor-jackson:$ktor_version")
implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.9.8")
...
implementation("io.ktor:ktor-client-core:$ktor_version")
implementation("io.ktor:ktor-client-cio:$ktor_version")
implementation("io.ktor:ktor-client-jackson:$ktor_version")
implementation("io.ktor:ktor-client-logging:$ktor_version")
implementation("com.fasterxml.jackson.datatype:jackson-datatype-jsr310:2.10.2")
route:
object ImagesRouter {
fun Routing.images(imagesModule: ImagesModule) {
route("images") {
get("/{id}") {
// ...
}
post {
val multipart = call.receiveMultipart() // fails here
// ...
}
}
}
}