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Hi all, I am failing to use WebSocket in Kotlin/WASM environment.
When using the ktor library, normal server api calls were successful, but websocket throws NullpointExeption.

dependencies {
...
    implementation("io.ktor:ktor-client-core-wasm:2.3.3-wasm0")
    implementation("io.ktor:ktor-client-websockets-wasm:2.3.3-wasm0")
    implementation("io.ktor:ktor-serialization-kotlinx-json-wasm:2.3.3-wasm0")
    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core-wasm:1.7.0-RC-wasm0")
    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json-wasm:1.5.1-wasm0")
....
}

// test code
    suspend fun testWebSocket() {
        try {
            client.webSocket("ws://localhost:8080") {
                webSocketSession = this

                var autoMessageIndex = 0
                while (true) {
                    send("message${autoMessageIndex++}")
                    val othersMessage = incoming.receive() as? Frame.Text
                    println(othersMessage?.readText())
                    delay(1000)
                }
            }
        } catch (ex: Exception) {
            val closeReason = webSocketSession?.closeReason?.await()
            println("testWebSocket(-) closeReason:$closeReason ex:$ex")
            closeTestWebSocket()
        }
    }
