Unresolved reference: OkHttp in ktor - kotlin

Question

I am adding OkHttp in HttpClient. But I am getting error. Unresolved reference: OkHttp. I tried to add library in commonMain of build.gradle.kts, but I think I am missing some steps or doing something wrong. I want to use ktor Http but getting weird issue on my side. Can someone guide me, what am I am missing in my code?
import io.ktor.client.*
import io.ktor.client.engine.*
import io.ktor.client.engine.okhttp.*
fun createHttpClient() {
val client = HttpClient(OkHttp)
}
build.gradle.kts
plugins {
kotlin("multiplatform")
kotlin("native.cocoapods")
id("com.android.library")
}
version = "1.0"
kotlin {
android()
iosX64()
iosArm64()
iosSimulatorArm64()
cocoapods {
summary = "Some description for the Shared Module"
homepage = "Link to the Shared Module homepage"
ios.deploymentTarget = "14.1"
framework {
baseName = "kotlinmultiplatformsharedmodule"
}
}
sourceSets {
val commonMain by getting{
dependencies {
implementation("io.ktor:ktor-client-okhttp:2.0.0")
implementation("io.ktor:ktor-client-core:2.0.0")
implementation("io.insert-koin:koin-core:3.2.0-beta-1")
}
}
val commonTest by getting {
dependencies {
implementation(kotlin("test"))
}
}
val androidMain by getting
val androidTest by getting
val iosX64Main by getting
val iosArm64Main by getting
val iosSimulatorArm64Main by getting
val iosMain by creating {
dependsOn(commonMain)
iosX64Main.dependsOn(this)
iosArm64Main.dependsOn(this)
iosSimulatorArm64Main.dependsOn(this)
}
val iosX64Test by getting
val iosArm64Test by getting
val iosSimulatorArm64Test by getting
val iosTest by creating {
dependsOn(commonTest)
iosX64Test.dependsOn(this)
iosArm64Test.dependsOn(this)
iosSimulatorArm64Test.dependsOn(this)
}
}
}
android {
compileSdk = 32
sourceSets["main"].manifest.srcFile("src/androidMain/AndroidManifest.xml")
defaultConfig {
minSdk = 21
targetSdk = 32
}
}

Answer 1

Since OkHttp is designed to work on JVM and Android, you can't use it in the common code. You can create a different engine for each platform and inject it into the common code.
Or you can use expect-actual, see: https://ktor.io/docs/http-client-engines.html#mpp-config. You create an expect fun createHttpClient(): HttpClient in the common code, and actual fun createHttpClient(): HttpClient with the implementation for corresponding platform in each of the platform modules.