I'm doing

call.response.contentType(ContentType.Application.Json.withCharset(Charsets.UTF_8))

as per https://ktor.io/servers/responses.html#properties, but get the Exception

io.ktor.response.UnsafeHeaderException: Header Content-Type is controlled by the engine and cannot be set explicitly

. How can I send JSON? I don't have

ContentNegotiation

installed, and don't want it.

Howdy devs. I want to hear what everyone's thoughts are on my proposal here: https://github.com/ktorio/ktor/issues/453

I'm using cookie session, but was also wanting to implement some sort of CSRF protection -- are there any recommended ways of doing that at present that work alongside Ktor's session support?

^thread

any idea?

I was a little surprised, but I’m sure there’s a logical explanation for this. Parameter “name” is null inside the interceptor but not inside the route. Is there another way to do this kind of thing?

fun main(args: Array<String>) {
    val server = embeddedServer(Netty, port = 9000) {
        intercept(ApplicationCallPipeline.Call) {
            val name = call.parameters["name"]
            proceed()
        }

        routing {
            get("/login/{name}") {
                val name = call.parameters["name"]
                call.respond("Hello $name")
            }
        }
    }
    server.start(wait = true)
}

Is the Locations feature experimental in the sense that it could disappear tomorrow, or experimental in the same way coroutines are experimental and subject to changes until things settle?

I am trying to use the

HttpClient

backed by the

io.ktor.client.engine.cio.CIO

engine on App Engine Standard.

This is the exception i get

java.lang.NoClassDefFoundError: Could not initialize class io.ktor.network.tls.CIOCipherSuites
    at io.ktor.client.engine.cio.HttpsConfig.<init>(CIOEngineConfig.kt:26)
    at io.ktor.client.engine.cio.CIOEngineConfig.<init>(CIOEngineConfig.kt:9)
    at io.ktor.client.engine.cio.CIO.create(CIO.kt:14)
    at io.ktor.client.engine.HttpClientEngineKt$config$1.create(HttpClientEngine.kt:47)
    at io.ktor.client.engine.HttpClientEngineFactory$DefaultImpls.create$default(HttpClientEngine.kt:36)
    at io.ktor.client.HttpClient.<init>(HttpClient.kt:32)
    at io.ktor.client.HttpClient.<init>(HttpClient.kt:31)

Any ideas on how I can fix this ?

Just tried making a new Ktor project w/ the IDEA plugin and got this error:

Error:Kotlin: [Internal Error] java.lang.IllegalStateException: The provided plugin org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar is not compatible with this version of compiler
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:186)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:119)
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment$Companion.createForProduction(KotlinCoreEnvironment.kt:418)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.createCoreEnvironment(K2JVMCompiler.kt:265)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:154)
	at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:63)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:107)
	at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.java:51)
	at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:96)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$$inlined$ifAlive$lambda$1.invoke(CompileServiceImpl.kt:399)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$$inlined$ifAlive$lambda$1.invoke(CompileServiceImpl.kt:98)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:920)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:98)
	at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:137)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:950)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.doCompile(CompileServiceImpl.kt:919)
	at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:397)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
	at sun.rmi.transport.Transport$1.run(Transport.java:200)
	at sun.rmi.transport.Transport$1.run(Transport.java:197)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
	at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:835)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
	at java.security.AccessController.doPrivileged(Native Method)
	at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.AbstractMethodError: org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar.registerProjectComponents(Lcom/intellij/mock/MockProject;Lorg/jetbrains/kotlin/config/CompilerConfiguration;)V
	at org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment.<init>(KotlinCoreEnvironment.kt:184)
	... 33 more

?

Is there a best practice for enabling debug logging level in Ktor for debug environments?

I am using the http cio client -- how can I send an input stream to the client as the body?

I have not seen any examples of integratin opentracing/jaeger in ktor. Can you point me in the right direction?

Does anyone know why a .send() would block indefinitely on the outbound channel of a WebSocket connection? I’m not seeing anything to indicate that the websocket has closed.

Are there any json samples for the client ?

Hello. Just a question to know if it’s possible. I implement google auth in my backend with ktor. When I succeed the authentication, the google auth redirect to my route and after the backend send an header session to the client. The question is : when I try to authenticate with my front app in Reactjs, I want to fetch the route, be redirect to google auth and after have a response with the header but now my ktor app redirect me on my back. How Can I do to redirect my client on his app when I send the header please ? (I don’t know if it’s clear, don’t hesitate if you want some code)

I am right that there is no formdata or urlencoded

OutgoingContent

in the client ?

Hullo -- is there any planned support for

SameSite

property on cookies in ktor? https://www.owasp.org/index.php/SameSite

i wonder if routing is not installed or applied ?

Anyone here have any suggestions for an equivalent in the Kotlin reflection library so I don't need a dependency upon apache commons 3.

I am running on ktor 0.9.3, kotlin 1.2.51

What’s your CORS config?

I'm trying to get websockets working with a graphql backend (http://graphql-java.readthedocs.io/en/latest/subscriptions.html). How do I have to configure ktor to achieve this? Thanks for any help

I'm migrating our Ktor app to Docker Compose for local development, but I'm struggling to get watch mode working inside the container. It works if I run it directly on my machine, but inside the container I get:

No ktor.deployment.watch patterns match classpath entries, automatic reload is not active

Any ideas on what might be the issue? (It's running OpenJDK 1.8 in the container)

what do you use for sql queries except Exposed? i like https://github.com/seratch/kotliquery but it looks like an abandoned project

the same question for DI 🙂 guice is a mature java project, but it uses guava as dependency and does not have fancy kotlin dsl

@cy That seems closer to my use case, but I don't see how I would use other response types and status codes... my problem is that the client program has a funny and inconsistent api, so I want to abstract things to be able to adapt. I would need to pass the call to an intermediary handler function that translates the controller results into by calling various responseXXX() methods on ApplicationCall

Hello, what is a proper concept of DI in ktor? For example I’m using kmongo ... how to make database as a singleton object and share it within entire application, all modules etc?

I wonder if Ktor will be implementing micrometer.io metrics, vert.x seemed to do it just for the popularity of Prometheus on Kubernetes https://vertx.io/blog/eclipse-vert-x-metrics-now-with-micrometer-io/