Does Ktor’s

HttpClient

kick off it’s own coroutine to make requests? And do we have any control over that coroutineContext? I’m having trouble getting ktors HttpClient to behave nicely in regards to synchronization. Unless I wrap the

.get()

in

withContext(runTest.coroutineContext)

my tests do not wait for ktor request to return and the test will complete prematurely

Hello folks, does anyone have been use hibernate + hikari and ktor in production? I’ve using those lib because I’m using google spanner has database and I’m facing some problem with opened connections and I might think that is my hikari configurations with some missing properties but I really dont know. May someone already used ktor + hibernate + hikaricp?

in ktor-client, is there a way to add headers in a suspended context?

Hello again, 👋🏽 I was doing a bit of research regarding the best approach to Gracefully Shutdown a Ktor server (Netty Engine - more specifically). Looking through the documentation, I thought that the recommended way would be through Application Monitoring Events (e.g getting SIGTERM signals). However, during my tests, I noticed that

onStopping, onPrepareStop and onStopped

ApplicationEvents are not triggered for Netty Engine? Is that expected? If so, do you have any suggestion to properly handle those Graceful Shutdowns? Thanks once again for your help.

hello all! I’ve just updated Ktor 2.0.0-beta-1 to 2.0.2 (client), and I’ve noticed something strange happening: • When a request fails (for instance, receiving a 403), I get the deserialized object as null instead of an exception For example:

public suspend fun someCall(random: RandomObject): SomeObject = <http://client.post|client.post>(URL) {
  setBody(random)
}.body()

Previously, when I called this from:

public suspend fun invokeSomeCall(random: RandomObject, onSuccess: (SomeObject) -> Unit, onFailure: (SomeErrorObject) -> Unit) {
  try {
    val response = EntityManagerAPI.someCall(random)

    coroutineScope {
      onSuccess(response)
    }
  } catch (e: Exception) {
    coroutineScope {
      onFailure(processException(e))
    }
  }
}

And the server returns a 403, the deserialization of

SomeObject

would fail, and I’ll call

onFailure

. Now, with the new version,

onSuccess

is called and it’s deserialized with all the default values. The rules that I’m using for

Json

on

ContentNegotation

are:

public val nonStrictJson: Json = Json {
  prettyPrint = true
  isLenient = true
  ignoreUnknownKeys = true
}

From my tests if I change

isLenient

to false, I get the previous behaviour; in any case I’m trying to understand what changed, or what I might be doing wrong? Is there a better approach here? Perhaps, checking the status code before?

Has anyone come across ktor server using CIO hanging on requests? I can’t pin it down yet but I have multiple requests hitting my server at once and it seems one of them at least is hanging, once it times out on the client side the other requests are handled fine. If I change to use the Netty engine then everything is fine

I'm attempting to switch some code from okhttp to ktor-client. the server (IP camera) uses digest authentication. My implementation with okhttp uses https://github.com/rburgst/okhttp-digest and works fine. Trying to use ktor, I'm getting authentication errors. The biggest difference that I see is that okhttp-digest has "algorithm=MD5" in the Authorization header, while ktor doesn't. Is there a simple way to add that so I can test if that's the issue or if it's something else?

I am facing the below problem after updating to ktor 2.0.2 and enabling a new memory model in kmp library project.

e: Could not find "io.ktor:ktor-http-cio" in [/Users/subhamtyagi/Library/Application Support/kotlin/daemon]
e: java.lang.IllegalStateException: FATAL ERROR: Could not find "io.ktor:ktor-http-cio" in [/Users/subhamtyagi/Library/Application Support/kotlin/daemon]

Kotlin - 1.6.21 ktor-2.0.2 coroutine-1.6.3 More logs are in the thread

Can somebody explain how to configure SSL with Darwin HttpClient? I'm getting this exception when I try to connect to a web socket over SSL. io.ktor.client.engine.darwin.DarwinHttpRequestException: Exception in http request: Error Domain=NSURLErrorDomain Code=-1011 "There was a bad response from the server."

I am running up against an issue using Ktor 2.0.2 with SSL. I am trying to create a multiplatform application for iOS and Android but my API requests are causing a crash on Android (haven't checked iOS yet). This is being caused by an SSL issue. I followed the guide for setting up SSL on Android for the engine I am using, but my keystore is not being found. Are there any guides or examples out there for how to do SSL in KMM?

I just migrated to Ktor 2.0.2 folling IntellijIdea migration tool.. Surprisingly, all compiles fine however I keep getting this error too

Hello, I’m building a server, REST API, with ktor, and I was wondering what’s the best framework to build a admin panel with it ? And it is even possible ?

Hi everyone Ktor support graphql?

Can anyone help me with this please?

Hi, I’m using Ktor Web Socket in a multiplatform project (Android/iOS). I saw auto-retry for http request, but no option for websocket connection. Does it work with Ktor Web Socket or any other option? My use-case is that the app keeps a Web Socket connection to the server. From time to time, the connection is dropped due to client connectivity (ex. switch between wifi/data, connection glitch) or backend (ex. scaling optimization). I would like to implement an auto reconnect logic when it’s dropped.

Hi, In my application that is running on top of Ktor 1.6.4 I noticed that call.receiveText() returns a garbled string if the input text is in Japanese. I ruled out that it happens on the client side. Is there some configuration I forgot to do to make receiveText handle Japanese correctly?

Quick poll. Should a server under test be configured with

application.conf

from the

main

sourceset if the config in the

test

sourceset is absent?

:yes:

🇳🇴

Is there a way when using Ktor embedded server with Netty to block use of TLS 1.0 and 1.1?

Hello everybody. Is there something already "ready" to add roles to routes that need authentication? Like :

authenticate {

("need_admin_role or user_role")

post("/some_route) { @TODO }

}

Hi all, when using ktor, how can i redirect to another page and passing data? I have 2 pages (login and detail) and freemarker as template engine. On login page after form is submit, i would like to redirect to page detail

call.respondRedirect()

instead of rendering the new page

call.respondTemplate('detail.ftl', mapOf("myData" to myValue))

however i need to send some data to the new page when rendering the template

This message was deleted.

Hello Team, Newbie to Kotlin and Ktor. I need help in adding unit tests which uses a testing database. Is there a reference that I can follow. I'm using Ktor

2.0.2

. Basically I need to understand the setup(connection to test db and create data for testing) and teardown(cleanup of test data after all tests) parts using the

testApplication

Thanks in advance!

@channel

Hello, I’m trying have interoperability with java and Im using the ktor client and which to receive the body of a response but since

receive

method is an inline reified I cannot call it from java? Is there any other solution?

I'm making a library that uses Ktor Client in the background, but for some reason when I use it (when I use the

.jar

), I get a

NoClassDefFoundError

. This is the full stack trace:

Exception in thread "main" java.lang.NoClassDefFoundError: io/ktor/client/engine/cio/CIO
	at com.gitlab.djsushi123.kotlintelegrambotmother.Bot.<init>(bot.kt:22)
	at com.gitlab.djsushi123.kotlintelegrambotmother.BotKt.buildBot(bot.kt:57)
	at MainKt.main(Main.kt:7)
	at MainKt$main$2.invoke(Main.kt)
	at MainKt$main$2.invoke(Main.kt)
	at kotlin.coroutines.intrinsics.IntrinsicsKt__IntrinsicsJvmKt$createCoroutineUnintercepted$$inlined$createCoroutineFromSuspendFunction$IntrinsicsKt__IntrinsicsJvmKt$1.invokeSuspend(IntrinsicsJvm.kt:205)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlin.coroutines.ContinuationKt.startCoroutine(Continuation.kt:115)
	at kotlin.coroutines.jvm.internal.RunSuspendKt.runSuspend(RunSuspend.kt:19)
	at MainKt.main(Main.kt)
Caused by: java.lang.ClassNotFoundException: io.ktor.client.engine.cio.CIO
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
	... 10 more

What am I doing wrong? The library uses Gradle. This is my `build.gradle.kts`:

plugins {
    id("org.jetbrains.kotlin.jvm") version "1.7.0"
    kotlin("plugin.serialization") version "1.7.0"

    `java-library`
}

version = "0.0.1-alpha"

repositories {
    // Use Maven Central for resolving dependencies.
    mavenCentral()
}

dependencies {
    implementation(platform("org.jetbrains.kotlin:kotlin-bom"))

    implementation("org.jetbrains.kotlin:kotlin-stdlib")

    api("io.ktor:ktor-client-core:2.0.2")
    api("io.ktor:ktor-client-cio:2.0.2")

    api("io.ktor:ktor-client-content-negotiation:2.0.2")
    api("io.ktor:ktor-serialization-kotlinx-json:2.0.2")

    api("io.ktor:ktor-client-resources:2.0.2")

    // Use the Kotlin test library.
    testImplementation("org.jetbrains.kotlin:kotlin-test")

    // Use the Kotlin JUnit integration.
    testImplementation("org.jetbrains.kotlin:kotlin-test-junit")
}

Hi all, good day. I would like to hear about you experience with DI in ktor apps. I see that ktor has a example with Kodein , which I looked into. Also, I know some people do use Koin. I can’t find a good comparison between both. Koin API seems more ‘kotlin’ to me then kodein, but I would like to hear about the experiences… Most info on internet is more about Android then Ktor …

Hi all! I have develop a ktor app locally and I have routes likes

/account

or

/events

that I would call at

<http://localhost:8080/events>

for example. Now I have deployed it on a server at something like

<https://some.domain/api/>

and I call endpoints at

<https://some.domain/api/events>

. Now there aren’t any route that is matched when I call that endpoint. I have an intercept where I print the request path and it says the path is

/api/events

which makes sense. My question is, how do I tell ktor that it’s hosted under a specific path ? In this case

/api

. This way, it would strip the

/api

part and the route would get matched and my code would run as expected. Thanks 🙂

Hi all. I just found out that, depending on the combination of plugins we select on intellij ktor project creator, or start.ktor.io , we can generate a ‘broken’ app if we select to configured the application with a config file instead of code. The app is broken in the sense that it will generate a sample test that fails because of the module initialisation . Could someone tell me where can I report that ? actually, the whole interaction between testApplication{} builder and configuration files seems kind of weird to me.. I had plenty of problems with that …

@Aleksei Tirman [JB] https://repo.maven.apache.org/maven2/io/ktor/ktor-client-core-watchosarm64/2.0.3/ktor-client-core-watchosarm64-2.0.3.pom is missing, all other variants seem to have built successful yesterday at approx 4pm