I was trying out

1.6.0-RC

Kotlin version and when I run app (on iOS) now I'm getting

Failed to find HttpClientEngineContainer. Consider adding [HttpClientEngine] implementation in dependencies.

I have

io.ktor:ktor-client-ios

dependency (as before). https://kotlinlang.org/docs/eap.html#build-details seems to indicate that version should work with Ktor 1.6.4

📣 1.6.5 Released https://twitter.com/JetBrainsKtor/status/1455600162382905345

Can someone point me to documentation for integrating queries to DB2 into ktor. I have never worked with having to setup jdbc and the connections to a particular type of database before and would be very appreciative?

Is there any decent way to implement mutual SSL authentication? (Including extracting certificates' subject and other parameters)

Hello, I am using ktor client, I am wondering how can I get the response from the client without using coroutines? found some links that say to use

runBlocking

but still not sure how to get the response outside of it?

Any plans to add support HTTP/2 for CIO?

I am trying to append a header to my request, documentation says it is a string, but when I pass a string I get a type mismatch:

Type mismatch.
Required: HeaderValueWithParameters
Found: String

HeaderValueWithParameters is abstract, not sure what to pass here?

Not sure what channel this question best belongs in, but since it's with using Ktor, someone here might have some insight. I have a Ktor

HttpClient

and an

Authenticator

class I'd like to install in the client. In an effort to beautify the code, I'm trying to make the syntax concise. I'd like this to work:

class Api(authenticator: Authenticator) {
    private val client = HttpClient {
        Auth {
            authenticator.install() // Unresolved reference: install
        }
    }
    //...
}

class Authenticator(
    private val dependency: Dependency
) {

    fun Auth.install() {
        bearer {
            //...
        }
    }
}

But get "Unresolved reference: install" error. It's not able to call the

install()

function with

Auth

as the receiver. If I change

authenticator.install()

to

with(authenticator) { install() }

or

authenticator.run { install() }

, this works, but obviously not as nice.

Authenticator

has dependencies, which is why the class is necessary and can't be a simple extension function. Is there a better way to format this code to achieve what I'm trying to do as concisely as possible?

I'm having an issue with

ApplicationCall.respond()

taking up to 10 seconds in some situations, how could I debug that, or what could be possible causes to look into?

Hello 🙂 I need to run a function just once a month periodically on the server (or twice a month whatever). How can I achieve this with ktor, can you just use coroutines for such big delays?

Hi, I am looking to write a plugin (an interceptor in retrofit). I need to add an etag if it exists in the local db, to the request and then store the etag from the response header for use next time. Any examples of how i can achieve this? The KTor documentation is not very helpful (and has. broken link).

Hello! I've got weird but interesting for me question about ktor client library. Would be glad to hear developers team answers. Had you thought about giving some additional API besides coroutines one? If had but decided not to do it, then why? (I don't need different API, just want to understand your position in this question) Thank you! Looking forward for your answer.

Hello! I am using Ktor as common library for platforms iOS and Android our backend services are session and cookie based, where I first do authorization call, as response I get token, using that token as cookie header I need to make next consecutive requests for which ktor client is adding encoded value instead of actually passed value for which my backend is not providing valid response, can anyone help me in resolving this, upon verifying using proxy tools, if my backend is expecting token = LYJxQGo1pgmP_Eu-tAMmcA..|1636367566|ckC8hI-v1vj1KIz_4CDKupRDUhk., ktor is passing LYJxQGo1pgmP_Eu-tAMmcA..%2%2%21636367566|ckC8hI-v1vj1KIz_4CDKupRDU

@Ovsyannikov Alexey just found a nasty bug in the latest KTor: https://youtrack.jetbrains.com/issue/KTOR-3380. It is caused by inconsistency between target JDK version and the actual JDK used for the build.

Hello all, what would be the best approach to add validation to data classes that are used as endpoint schemas? Right now I'm using protobuf and creating my own serializers... But that gets out of hand very easily.

Hi there, I’m not sure if that is the right channel to ask that: I’m using Ktor Http Client and I need to add a dynamic header in all calls based on some conditions. With Retrofit I would normally add a simple interceptor and that would be the trick - but looking the docs I did not find a way to add interceptors when doing requests with Ktor (I’m finding very confusing Ktor docs, probably because I’m trying to find things for the client and I end up reading about the server and vice-verse). Can someone point me to examples on how to do that?

hey guys! is it any tutorial how to use integration tests with test containers in ktor?

I use the html DSL to return html on requests on my ktor server. Right now I have a mix of kotlin html and it links to javascript files (similar to how you would have in a plain old html). I noticed that there is a kotlin/js wrapper (?). Is it somehow possible to use kotlin 100% and get rid of the javascript files entirely?

Hey there! If I have a ktor client and some sealed class

Foo

that has

Bar

and

Baz

as subclasses, and I make a post request that can either create a

Bar

or a

Baz

, how can I do that? Do I say

<http://myClient.post|myClient.post><Foo> { … }

and then process the entity as either

Bar

or

Baz

?

Hi all! Is there somewhere some in depth information about routes and phases? I made once a feature that could "override" a security rule/role for a route. It can override it, by adding phases to a pipeline in reverse order. In eap 2.0-256 the behavior seems a bit different than older version, more in the thread.

Does anyone know (or had faced the problem) when I “runDistributable” (or the app from the file generated buy intellij) I got this error:

Failed to instantiate SLF4J LoggerFactory
Reported exception:
java.lang.NoClassDefFoundError: javax/naming/NamingException

The weird thing is if I run the app throw the IDE or with a jar by command line no error and everything works as expected the module where I got the error is a pretty simple ktor server (with some client part to talk to a master-server) a very simple views written in compose

Hi, I am currently doing performance benchmark of a KMM project. Although there were no memory leaks in the Android App for one of the flows, But there are a plenty of leaks in the iOS app. After implementing one of the solutions mention in this issue (ie. calling 

kotlin.native.internal.GC.collect()

 when screens are getting closed) the leaks exist. I'm sharing screenshots for some of the memory leaks. Has anyone else seen these kind of leaks before?

I'm writing a KMM app and I'd like to share Ktor routes between server and client. Right now I'm using string for route names:

// server
route("user") {
    post("setFavorite") {
        
    }
}
route("auth") {
    post("facebook") {
        
    }
}
route("other") {

}
// client
<http://client.post|client.post><Unit>("/user/setFavorite")

I'd like to share this names to prevent errors. For example with interface like this:

sealed interface ServerRoutes {
    sealed interface User: ServerRoutes {
        object SetFavorite: User
    }
    sealed interface Auth: ServerRoutes {
        object Facebook: Auth
    }
    object Other: ServerRoutes
}

Which could be used like this:

// server
route(ServerRoutes.User) {
    post(ServerRoutes.User.SetFavorite) {
        
    }
}
route(ServerRoutes.Auth) {
    post(ServerRoutes.Auth.Facebook) {
        
    }
}
route(ServerRoutes.Other) {

}
// client
<http://client.post|client.post><Unit>(ServerRoutes.User.SetFavorite)

I think I can generate routes from class names using annotation processor, but I'm wondering if there's some existing solution?

Its seems that the publish infrastructure is broken again https://search.maven.org/artifact/io.ktor/ktor-client-core-watchosx64/1.6.5 Wasn't published

How can I make client logging work in a multiplatform (Android/iOS) project? I have set up logging in my shared code:

internal fun createHttpClient() = HttpClient {
            install(Logging) {
                logger = Logger.DEFAULT
                level = LogLevel.ALL
            }
        }

but I see no logs. On Android I use the CIO client.

Is there an example anywhere of using Ktor Server (EAP) in a Kotlin Multiplatform project that targets K/N (macOS/iOS)? I see that the artifacts for

ktor-server-core

and

ktor-server-cio

exist in maven (e.g. https://maven.pkg.jetbrains.space/public/p/ktor/eap/io/ktor/ktor-server-core-macosarm64/) but I can't seem to figure out how to configure my build.gradle.kts to get the right dependencies (a lot of dependency could not be found errors regardless of which version of the EAP I target).

I need to stream a relatively large file (300-500 MB) concurrently to 10+ clients, but under load, the download speed gets super low (down to 300 kb/s). It feels like the server doesn't have enough resources to process such amount of long-running requests 🤔 Environment: OS: Windows 10 x64 CPU: Intel Core i9-10900k RAM: 32 GB Code:

fun main() {
    val file = File("G:/test.zip")

    embeddedServer(CIO, port = 8081) {
        routing {
            get("/file") {
                call.response.header(HttpHeaders.ContentDisposition, "inline; filename=\"test.zip\"")

                call.respondOutputStream {
                    file.inputStream().buffered().use { stream -> stream.copyTo(this.buffered()) }
                }
            }
        }
    }.start(true)
}

So what is a good way to debug it? Or maybe there is a better approach I can use?

hey! how i can create a bytepacketbuilder with custom capacity with ktor io?

is there ktor client for watchos, tvos and so on? I am checking there is one for iOS but I can't find if it works with rest of targets