File upload

[Groodian]

What is the best way to get a list of images as a multipart request?

[Wicpar]

https://github.com/papsign/Ktor-OpenAPI-Generator/wiki/A-few-examples#multipart-request

[Groodian]

Thanks for your reply.
I have already found this but I want to receive a list of images.

Something like this:

@FormDataRequest
data class PatientAddPictures(
    @PartEncoding("image/*")
    val pictures: List<NamedFileInputStream>
)

But this don’t work.

[Wicpar]

You can't have a list of file input streams as a part of type image, right now each part must be named and annotated correctly, you can make them optional though with the nullability. You could make an upload of up to N images each called image1 to imageN in the parameters.

[Groodian]

Now I am using a binary request, but I get this error:

java.lang.IllegalStateException: Acquiring blocking primitives on this dispatcher is not allowed. Consider using async channel or doing withContext(Dispatchers.IO) { call.receive<InputStream>().use { ... } } instead.

I don’t do anything in the route which is using the binary request.

[Wicpar]

Please identify where the error originates, i don't have the environment to reproduce at the moment.

[Groodian]

java.lang.IllegalStateException: Acquiring blocking primitives on this dispatcher is not allowed. Consider using async channel or doing withContext(Dispatchers.IO) { call.receive<InputStream>().use { ... } } instead.
	at io.ktor.server.engine.DefaultTransformKt.checkSafeParking(DefaultTransform.kt:93)
	at io.ktor.server.engine.DefaultTransformKt.receiveGuardedInputStream(DefaultTransform.kt:88)
	at io.ktor.server.engine.DefaultTransformKt.access$receiveGuardedInputStream(DefaultTransform.kt:1)
	at io.ktor.server.engine.DefaultTransformKt$installDefaultTransformations$2.invokeSuspend(DefaultTransform.kt:50)
	at io.ktor.server.engine.DefaultTransformKt$installDefaultTransformations$2.invoke(DefaultTransform.kt)
	at io.ktor.server.engine.DefaultTransformKt$installDefaultTransformations$2.invoke(DefaultTransform.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.request.ApplicationReceiveFunctionsKt.receive(ApplicationReceiveFunctions.kt:116)
	at com.papsign.ktor.openapigen.content.type.binary.BinaryContentTypeParser.parseBody(BinaryContentTypeParser.kt:118)
	at com.papsign.ktor.openapigen.route.OpenAPIRoute$handle$2$2$1$2$1$1.invokeSuspend(OpenAPIRoute.kt:71)
	at com.papsign.ktor.openapigen.route.OpenAPIRoute$handle$2$2$1$2$1$1.invoke(OpenAPIRoute.kt)
	at com.papsign.ktor.openapigen.route.OpenAPIRoute$handle$2$2$1$2$1$1.invoke(OpenAPIRoute.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$lambda-4$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$lambda-4$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$lambda-4$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$lambda-4$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$lambda-4$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$lambda-4$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$lambda-5$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-6$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.routing.Routing.executeResult(Routing.kt:155)
	at io.ktor.routing.Routing.interceptor(Routing.kt:39)
	at io.ktor.routing.Routing$Feature$install$1.invokeSuspend(Routing.kt:107)
	at io.ktor.routing.Routing$Feature$install$1.invoke(Routing.kt)
	at io.ktor.routing.Routing$Feature$install$1.invoke(Routing.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invokeSuspend(ContentNegotiation.kt:145)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invoke(ContentNegotiation.kt)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invoke(ContentNegotiation.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.features.StatusPages$interceptCall$2.invokeSuspend(StatusPages.kt:102)
	at io.ktor.features.StatusPages$interceptCall$2.invoke(StatusPages.kt)
	at io.ktor.features.StatusPages$interceptCall$2.invoke(StatusPages.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at io.ktor.features.StatusPages.interceptCall(StatusPages.kt:101)
	at io.ktor.features.StatusPages.access$interceptCall(StatusPages.kt:18)
	at io.ktor.features.StatusPages$Feature$install$2.invokeSuspend(StatusPages.kt:142)
	at io.ktor.features.StatusPages$Feature$install$2.invoke(StatusPages.kt)
	at io.ktor.features.StatusPages$Feature$install$2.invoke(StatusPages.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invokeSuspend(DefaultEnginePipeline.kt:127)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invoke(DefaultEnginePipeline.kt)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invoke(DefaultEnginePipeline.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invokeSuspend(NettyApplicationCallHandler.kt:123)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invoke(NettyApplicationCallHandler.kt)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invoke(NettyApplicationCallHandler.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startCoroutineUndispatched(Undispatched.kt:55)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.startCoroutineImpl(Builders.common.kt:194)
	at kotlinx.coroutines.BuildersKt.startCoroutineImpl(Unknown Source)
	at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:134)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:56)
	at kotlinx.coroutines.BuildersKt.launch(Unknown Source)
	at io.ktor.server.netty.NettyApplicationCallHandler.handleRequest(NettyApplicationCallHandler.kt:43)
	at io.ktor.server.netty.NettyApplicationCallHandler.channelRead(NettyApplicationCallHandler.kt:34)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:61)
	at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:370)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.ktor.server.netty.EventLoopGroupProxy$Companion.create$lambda-1$lambda-0(NettyApplicationEngine.kt:251)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)

[Groodian]

Do you need more information?

[Wicpar]

Not necessarily, i just don't have the mans to fix that during the holiday season...

[Groodian]

java.lang.IllegalStateException: Acquiring blocking primitives on this dispatcher is not allowed. Consider using async channel or doing withContext(Dispatchers.IO) { call.receive<InputStream>().use { ... } } instead.
	at io.ktor.server.engine.DefaultTransformKt.checkSafeParking(DefaultTransform.kt:93)
	at io.ktor.server.engine.DefaultTransformKt.receiveGuardedInputStream(DefaultTransform.kt:88)
	at io.ktor.server.engine.DefaultTransformKt.access$receiveGuardedInputStream(DefaultTransform.kt:1)
	at io.ktor.server.engine.DefaultTransformKt$installDefaultTransformations$2.invokeSuspend(DefaultTransform.kt:50)
	at io.ktor.server.engine.DefaultTransformKt$installDefaultTransformations$2.invoke(DefaultTransform.kt)
	at io.ktor.server.engine.DefaultTransformKt$installDefaultTransformations$2.invoke(DefaultTransform.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.request.ApplicationReceiveFunctionsKt.receive(ApplicationReceiveFunctions.kt:116)
	at com.papsign.ktor.openapigen.content.type.binary.BinaryContentTypeParser.parseBody(BinaryContentTypeParser.kt:118)
	at com.papsign.ktor.openapigen.route.OpenAPIRoute$handle$2$2$1$2$1$1.invokeSuspend(OpenAPIRoute.kt:71)
	at com.papsign.ktor.openapigen.route.OpenAPIRoute$handle$2$2$1$2$1$1.invoke(OpenAPIRoute.kt)
	at com.papsign.ktor.openapigen.route.OpenAPIRoute$handle$2$2$1$2$1$1.invoke(OpenAPIRoute.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$lambda-5$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$lambda-5$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$lambda-5$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$lambda-5$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$lambda-5$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$lambda-5$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$lambda-6$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.routes.PatientRouteKt$patientRoute$lambda-7$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1$1.invokeSuspend(Throws.kt:48)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1$1.invoke(Throws.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1.invokeSuspend(Throws.kt:47)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1.invoke(Throws.kt)
	at de.h_da.fbi.findus.ApplicationKt$module$7$invoke$$inlined$throws$1.invoke(Throws.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.routing.Routing.executeResult(Routing.kt:155)
	at io.ktor.routing.Routing.interceptor(Routing.kt:39)
	at io.ktor.routing.Routing$Feature$install$1.invokeSuspend(Routing.kt:107)
	at io.ktor.routing.Routing$Feature$install$1.invoke(Routing.kt)
	at io.ktor.routing.Routing$Feature$install$1.invoke(Routing.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invokeSuspend(ContentNegotiation.kt:145)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invoke(ContentNegotiation.kt)
	at io.ktor.features.ContentNegotiation$Feature$install$1.invoke(ContentNegotiation.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.features.StatusPages$interceptCall$2.invokeSuspend(StatusPages.kt:102)
	at io.ktor.features.StatusPages$interceptCall$2.invoke(StatusPages.kt)
	at io.ktor.features.StatusPages$interceptCall$2.invoke(StatusPages.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:89)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at io.ktor.features.StatusPages.interceptCall(StatusPages.kt:101)
	at io.ktor.features.StatusPages.access$interceptCall(StatusPages.kt:18)
	at io.ktor.features.StatusPages$Feature$install$2.invokeSuspend(StatusPages.kt:142)
	at io.ktor.features.StatusPages$Feature$install$2.invoke(StatusPages.kt)
	at io.ktor.features.StatusPages$Feature$install$2.invoke(StatusPages.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invokeSuspend(DefaultEnginePipeline.kt:127)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invoke(DefaultEnginePipeline.kt)
	at io.ktor.server.engine.DefaultEnginePipelineKt$defaultEnginePipeline$2.invoke(DefaultEnginePipeline.kt)
	at io.ktor.util.pipeline.SuspendFunctionGun.loop(SuspendFunctionGun.kt:248)
	at io.ktor.util.pipeline.SuspendFunctionGun.proceed(SuspendFunctionGun.kt:116)
	at io.ktor.util.pipeline.SuspendFunctionGun.execute(SuspendFunctionGun.kt:136)
	at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:78)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invokeSuspend(NettyApplicationCallHandler.kt:123)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invoke(NettyApplicationCallHandler.kt)
	at io.ktor.server.netty.NettyApplicationCallHandler$handleRequest$1.invoke(NettyApplicationCallHandler.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startCoroutineUndispatched(Undispatched.kt:55)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.startCoroutineImpl(Builders.common.kt:194)
	at kotlinx.coroutines.BuildersKt.startCoroutineImpl(Unknown Source)
	at kotlinx.coroutines.AbstractCoroutine.start(AbstractCoroutine.kt:134)
	at kotlinx.coroutines.BuildersKt__Builders_commonKt.launch(Builders.common.kt:56)
	at kotlinx.coroutines.BuildersKt.launch(Unknown Source)
	at io.ktor.server.netty.NettyApplicationCallHandler.handleRequest(NettyApplicationCallHandler.kt:43)
	at io.ktor.server.netty.NettyApplicationCallHandler.channelRead(NettyApplicationCallHandler.kt:34)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
	at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:61)
	at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:370)
	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:469)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.ktor.server.netty.EventLoopGroupProxy$Companion.create$lambda-1$lambda-0(NettyApplicationEngine.kt:251)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)

The error occurs on every file upload expect from fileupload in the tests.

[Wicpar]

There have been changes in newer versions of ktor that prevent using streams directly on the ktor thread... There is probably a non blocking alternative that is allowed, but the simplest would be to add an array type that just consumes the stream inside the proper io thread like described by the error