:mega: Finally, we have the last release candidat...

# ktor

[cy]

📣 Finally, we have the last release candidate, 1.3.0-rc2
It’s time to test and migrate, the final release is coming after New Year Holidays.

See the migration page: https://ktor.io/quickstart/migration/1.3.0.html

🎄 Please note that we have long New Year Holidays here so no worries if we don’t respond quickly.

[Aleksey Chugaev]

Does this release work with background threads on native targets (iOS)?

[cy]

I hope so, it should

[napperley]

Does this release include support for the Linux targets with Ktor Server?

[Dmitri Sh]

@cy any chance you guys could take a look at this web sockets problem I have had for a while - unknown protocol: ws (

try {
    <http://wsclient.ws|wsclient.ws> (
        method = HttpMethod.Get,
        host = hostn,
        port = portn, path = "/ws"
    ) {
        send(Frame.Text("Android client connecting"))

I originally experienced this with an android phone client, and then it just went away on its ownAdded a wearos project, same problem (they are both using the same shared common lib), but here it's just not going away

[Dmitri Sh]

by went away on its own, I mean I didn't do anything - had this error continuously for a number of builds, and then suddenly it worked. I don't know how to explain it. Unfortunately no such mysterious luck with the wearos counterpart

[cy]

@napperley No, it is planned to 1.4.0

[cy]

@Dmitri Sh it looks like you are trying to use Android Client engine with websockets that is not supported (and will never be supported due to the underlying implementation). Use OkHttp or other engines for websocket support

[Dmitri Sh]

@cy well it does work with Android phone client. And I use cio engine - here is my two source sets for common and android

sourceSets["commonMain"].dependencies {
    implementation("org.jetbrains.kotlin:kotlin-stdlib-common")
    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core-common:1.3.3")
    // Serialize
    implementation ("org.jetbrains.kotlinx:kotlinx-serialization-runtime-common:0.14.0")

    implementation ("io.ktor:ktor-client-core:$ktorversion")

    implementation ("io.ktor:ktor-client-json:$ktorversion")
    implementation ("io.ktor:ktor-client-logging:$ktorversion")
    implementation ("io.ktor:ktor-client-serialization:$ktorversion")
    implementation("io.ktor:ktor-client-websockets:$ktorversion")
    implementation ("io.ktor:ktor-client-cio:$ktorversion")

}

sourceSets["androidMain"].dependencies {
    implementation("org.jetbrains.kotlin:kotlin-stdlib")
    implementation ("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.3")

    implementation ("io.ktor:ktor-client-android:$ktorversion")
    implementation ("io.ktor:ktor-client-core-jvm:$ktorversion")

    implementation ("io.ktor:ktor-client-json-jvm:$ktorversion")
    implementation ("io.ktor:ktor-client-logging-jvm:$ktorversion")
    implementation ("io.ktor:ktor-client-serialization-jvm:$ktorversion")
    implementation("io.ktor:ktor-client-websockets-jvm:$ktorversion")
      //implementation ("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.0")

}

[cy]

So you include both

[cy]

You need to include only one to be sure

[cy]

Or, specify it when creating a client

[Dmitri Sh]

ok thanks will try later today. is there any ref documentation on how to specify the engine when creating a client

[Dmitri Sh]

@cy so I commented out android client and left just cio, now it works on both phone and wear os, many thanks! I am still puzzled though - both phone and wearos are really the same thing, using the same source set, and android client did work with web sockets for the phone, but not wear os. Strange. If you have a chance, is there anything else that is off in my sets? https://github.com/dmitrish/kinsight-multiplatform/blob/master/SharedCode/build.gradle.kts

[cy]

See https://ktor.io/clients/http-client/engines.html about client engines

[Dmitri Sh]

thanks, checking it out

[Aleksey Chugaev]

I have submitted an issue for background threads on native targets (iOS) https://github.com/ktorio/ktor/issues/1538