Hi, I try to write in a Gradle task an post of a artifact.

HttpClient().use {
      GlobalScope.launch {
        it.submitFormWithBinaryData {
          url {
            url(artifactRepository.get().baseUrl.clone().build())

            parameter("repository", repositoryName.get())

            headers {
              append("User-Agent", System.getProperty("os.name"))
            }
          }
        }
      }
    }

Unfortunately this ends up in the second run with

io.ktor.client.engine.ClientEngineClosedException: Client already closed

Anyone an idea how I can handle this?

If we're developing a big scale application with Ktor in which there might be many modules. Which DI framework is recommended to use? I saw Kodein, Koin, etc. But they uses reflection I guess which might affect performance? I can use Dagger but it not looks good solution in Ktor since everything here is in functions in Ktor. Any suggestion for choosing right DI Framework? My question might be wrong because I'm not from backend development. I've used DI in Android a lot so just want to see how it can be used here

idea seems to not find source jars for ktor jars. when i click on a stacktrace line thats from a ktor jar i see decompiled code instead of the ktor source.

I think ktor is really lacking in error handling. for example if you send a json body with one misspelled field it just returns 500 without any useful information (i made a pr to fix this). or when you send a jwt token in a wrong format (“Bearer: <token>” instead of “Bearer <token>“) it logs 2 stacktraces with the error message “java.lang.IllegalArgumentException: invalid authScheme value: it should be token”

Hey all, I’m using ktor in a KMP project that mainly interacts with a .NET server. All of the API operations are using content type

application/json

and the KotlinX serializer / JsonFeature, except for one. On one endpoint, I have to upload file content with a

multipart/form-data

request, that expects an

application/json

response. When I try to set the header on that request, it gives an error that the ktor engine is supposed to control the content type. Is there a way to override that behavior, or will I have to create a new HttpClient without the JsonFeature installed?

can i create a HttpClient based on a existing one? similar to

Json(Json.Default) { /*config here*/ }

Hello, World! Hey using Ktor HttpClient in a native project has been painful to me for the last few releases. Currently I'm experiencing

Frozen during lazy computation

when using

by lazy

and

InvalidMutabilityException: mutation attempt of frozen (my class)

when not. I must admit I still haven't understood what "frozen" mean... All works well with the same code on the JVM. Am I the only one?

seen this.. but it don’t work

FuelManager.instance.addRequestInterceptor(tokenInterceptor())
fun tokenInterceptor() = {
    next: (Request) -> Request ->
    { req: Request ->
        req.header(mapOf("Authorization" to "Bearer AbCdEf123456"))
        next(req)
    }
}

Question: probably it's a real rare use-case, so I get it if it's not supported. I'm using a single class for my client-tests. By expanding it a tiny step every time a test needs something more, it is gradually becoming smarter. (this way mocks can become the real deal). My question is: is it possible to connect the MockEngine of the client with a server in a way that it doesn't create the web-server itself?

I hope explanations on how to unit test ktor projects are going to be added to the documentation, or even better yet, to the quick start project structure - it's incredibly difficult to dip into ktor without it being easy to unit test 😞

Hello!

HttpResponseValidator

does not work on JS target for me. Any ideas?

validateResponse

is not called at all. Everything works as expected on Android (the same code). Bug or I miss something? 1.4.2

what is the correct way to render a “HTTP 204 No Content” response in ktor? The problem seems so easy but I can’t find any non-trivial solution to it.

Hi folks. I am new to KMM and trying to create a generic function for api calling using ktor with 

reified

  and it seems to work fine with 

android

 but throws an error in 

iOS

This is my common api call return in Shared file.

@Throws(Exception::class)
suspend inline fun<reified T> post(url: String, requestBody: HashMap<String, Any>?) : Either<CustomException, T> {
    try {
        val response = <http://httpClient.post|httpClient.post><T> {
            url(BASE_URL.plus(url))
            contentType(ContentType.Any)
            if (requestBody != null) {
                body = requestBody
            }
            headers.remove("Content-Type")
            headers {
                append("Content-Type", "application/json")
                append("Accept", "application/json")
                append("Time-Zone", "+05:30")
                append("App-Version", "1.0.0(0)")
                append("Device-Type", "0")
            }
        }
        return Success(response)
    }  catch(e: Exception) {
        return Failure(e as CustomException)
    }
}

It works good in android if I call it like this :-

<http://api.post|api.post><MyDataClassHere>(url = "url", getBody()).fold(
    {
        handleError(it)
    },
    {
        Log.d("Success", it.toString())
    }
)

But I am not able to get it run on iOS devices it shows me error like this :- `some : Error Domain=KotlinException Code=0 "unsupported call of reified inlined function `com.example.myapplication.shared.apicalls.SpaceXApi.post`" UserInfo={NSLocalizedDescription=unsupported call of reified inlined function

<http://com.example.myapplication.shared.apicalls.SpaceXApi.post|com.example.myapplication.shared.apicalls.SpaceXApi.post>

, KotlinException=kotlin.IllegalStateException: unsupported call of reified inlined function

<http://com.example.myapplication.shared.apicalls.SpaceXApi.post|com.example.myapplication.shared.apicalls.SpaceXApi.post>

, KotlinExceptionOrigin=}` Any help in this is  appreciated. Thanks

Hi everybody, There is a way to understand if a route is under auth from his parent tree?

Hi. As far as I can understand Ktor features are split into separate libraries. What is the way to find out exact gradle dependency of a feature? Documentation doesn’t mention it.

**************************** Ktor 1.5.0 Released* ***************************** https://blog.jetbrains.com/ktor/2020/12/22/ktor-1-5-0-released/

i’m trying to do some async processing in the scope of a ktor web request, our server is expecting to receive a payload and upon receiving the payload, the server is supposed to return a http 200 immediately and then do some processing on the payload (which will involve making some API calls), any ideas on how to best do this in a ktor app?

Yesterday I've struggled with problems with Jackson deserializer and sealed classes when running Ktor from gradle task. Today I've upgraded to 1.5.0 and the problem is still there, but only when I enable development mode. With the default (dev mode off) the problem is gone. What does this new development mode really do?

What is the reason I have to manually

close()

an

HttpClient

? Why isn’t it designed so that the

HttpClient

is bound to a

CoroutineScope

and automatically closes when the scope is canceled/completed? Isn’t this breaking structured concurrency (or at least requires workarounds)?

Has anyone tried enabling/disabling the new 1.5 development mode when running from the command line via the gradle wrapper? I’ve successfully done it via the

application.conf

file by setting

development=true

. And by adding

-Dio.ktor.development=true

to VM options in the IntelliJ run configuration But no luck from the command line so far.

Hey guys, is the ktor website open source? Maybe I'm not looking hard enough but I can't find it in the ktor repo. I wanted to add something to one of the doc pages but can't figure out where I should do that 😕

Hi all 👋🏻 - I have a small beginner question: I am writing an API service that support some GET/POST and in turn it create rest call to fetch the data from different sources (dB , and other services) So any built in / suggested framework to implement the API calls I need to do in my services? I used to work with OKHTTP3 but I though maybe there are some default for ktor. Tnx

Hi, I need to test my custom feature, and for this I need to change the

remoteHost

value, but it looks like it's hardcoded in

TestApplicationRequest.local

. How can I set it to a custom value? The technique

ForwardedHeaderSupport

uses to have a mutable version of

RequestConnectionPoint

is internal I also can't use the already existing MutableOriginConnectionPoint, as it's deprecated

hi, want to join ktor ios websockets development, how I can do it?

Don't know if this is the correct place to ask, but is there a download-manager for common Kotlin?

Ktor 1.5 changed the trailing slashes behavior, which is fine / good, but this here does not appear to work:

route("/resource") {
   get("/") {
  ...

If i call GET /resource/, I get a not found. /resource works

route("/resource/") {
   get {
   ...

In this case, GET /resource/ is found, but /resource not (expected behavior) Is this intended behavior, a bug, or am I missing something?

in ktor 1.5

expectSuccess

stopped working, 1.4.3 triggered

validateResponse

on 404 e.t.c, now not:

fun HttpClientConfig<*>.myInit() {
    expectSuccess = false
    addMyValidator()
}

fun HttpClientConfig<*>.addMyValidator() {
    HttpResponseValidator {
        validateResponse { response ->
        }
    }
}

I have an issue where a request is generating an exception io.ktor.utils.io.charsets.MalformedInputException: Input length = 1, In the request handler i am doing call.receiveParameters() which i think is where the issue is coming from. However my issue is how can i capture the raw request as this is happening in the wild and i want to capture the body in a log so i can investigate?

Hey. I am playing with ktor and I am running a server with netty. I wonder what is the best way to debug such application? I can set breakpoints and this is fine, but I need to understand whats going on - i need more visibility to know why ny server returns 500 ? Can we print stack trace and crash the app instead of returning 500?

Hi folks, i'm trying to get my simple websocket client to work with ktor 1.5.0 and the cio engine. When I run it locally I have no issues, but when its bundled inside a jib built docker container (adopt open jdk 14) its hanging:

suspend fun connect(host: String, path: String): DefaultClientWebSocketSession {
    val client = HttpClient { install(WebSockets) }
    println("I execute")
    val session = client.webSocketSession {
        url("wss", port = 443, host = host, path = path)
            println("I execute")
        }
        println("I don't execute")
        return session
    }
}

Any thoughts?