Fix android http client (#28)

* fix(android): implement androidMain HttpClient (OkHttp) to fix hostname-aware checkServerTrusted error

* fix CI issue

* fix unstable ut

---------

Co-authored-by: zuev.aleksey31 <zuev.aleksey31@rwb.ru>

Author: Piasy

README.md

@@ -37,7 +37,9 @@ kotlin {
 ## Usage
 
 ```kotlin
-IO.socket("http://localhost:3000", IO.Options()) { socket ->
+val opt = IO.Options()
+// opt.trustAllCerts = true
+IO.socket("http://localhost:3000", opt) { socket ->
     socket.on(Socket.EVENT_CONNECT) { args ->
         println("on connect ${args.joinToString()}")
 
@@ -156,6 +158,7 @@ Maven central portal credentials and signing configs are set in `~/.gradle/gradl
 # on macOS: need manual release on website
 ./gradlew clean \
     publishKotlinMultiplatformPublicationToMavenCentralRepository \
+    publishAndroidReleasePublicationToMavenCentralRepository \
     publishJvmPublicationToMavenCentralRepository \
     publishIosArm64PublicationToMavenCentralRepository \
     publishIosSimulatorArm64PublicationToMavenCentralRepository \

buildSrc/src/main/kotlin/Constants.kt

@@ -1,7 +1,7 @@
 object Consts {
   const val releaseGroup = "com.piasy"
   const val releaseName = "kmp-socketio"
-  const val releaseVersion = "1.4.0"
+  const val releaseVersion = "1.4.1"
 
   val androidNS = "$releaseGroup.${releaseName.replace('-', '.')}"
 }

example/androidApp/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
   <application
       android:allowBackup="false"
       android:supportsRtl="true"
+      android:usesCleartextTraffic="true"
       android:theme="@style/AppTheme">
     <activity
         android:name=".MainActivity"

example/shared/src/commonMain/kotlin/com/piasy/kmp/socketio/example/Greeting.kt

@@ -10,7 +10,9 @@ import kotlinx.io.bytestring.unsafe.UnsafeByteStringOperations
 class Greeting {
     @OptIn(UnsafeByteStringApi::class)
     fun greet() {
-        IO.socket("http://172.16.11.186:3000", IO.Options()) { socket ->
+        val opt = IO.Options()
+        //opt.trustAllCerts = true
+        IO.socket("http://172.16.11.186:3000", opt) { socket ->
             socket.on(Socket.EVENT_CONNECT) { args ->
                 println("Greeting on connect ${args.joinToString()}")
 

kmp-socketio/build.gradle.kts

@@ -6,13 +6,35 @@ plugins {
     alias(libs.plugins.kmp)
     alias(libs.plugins.vanniktech.mavenPublish)
     alias(libs.plugins.kover)
+    alias(libs.plugins.android.library)
 }
 
 version = Consts.releaseVersion
 group = Consts.releaseGroup
 
+android {
+    namespace = "${Consts.androidNS}.android"
+    compileSdk = libs.versions.compileSdk.get().toInt()
+    defaultConfig {
+        minSdk = libs.versions.minSdk.get().toInt()
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.toVersion(libs.versions.jvm.get().toInt())
+        targetCompatibility = JavaVersion.toVersion(libs.versions.jvm.get().toInt())
+    }
+    testOptions {
+        unitTests.all {
+            it.failOnNoDiscoveredTests = false
+        }
+    }
+}
+
 kotlin {
     jvm()
+    androidTarget {
+        publishLibraryVariants("release")
+    }
 
     iosArm64()
     iosSimulatorArm64()
@@ -69,6 +91,11 @@ kotlin {
                 api(libs.ktor.client.cio) // cio engine works fine
             }
         }
+        androidMain {
+            dependencies {
+                api(libs.ktor.client.okhttp)
+            }
+        }
         jvmTest {
             dependencies {
                 implementation(libs.kotlin.test)

kmp-socketio/src/androidMain/kotlin/com/piasy/kmp/socketio/engineio/transports/transport.android.kt

@@ -0,0 +1,35 @@
+package com.piasy.kmp.socketio.engineio.transports
+
+import io.ktor.client.HttpClient
+import io.ktor.client.HttpClientConfig
+import io.ktor.client.engine.okhttp.OkHttp
+import java.security.SecureRandom
+import java.security.cert.X509Certificate
+import javax.net.ssl.SSLContext
+import javax.net.ssl.X509TrustManager
+
+actual fun httpClient(
+    trustAllCerts: Boolean,
+    config: HttpClientConfig<*>.() -> Unit
+): HttpClient = HttpClient(OkHttp) {
+    if (trustAllCerts) {
+        val trustManager = object : X509TrustManager {
+            override fun checkClientTrusted(chain: Array<out X509Certificate>?, authType: String?) = Unit
+            override fun checkServerTrusted(chain: Array<out X509Certificate>?, authType: String?) = Unit
+            override fun getAcceptedIssuers(): Array<X509Certificate> = emptyArray()
+        }
+
+        val sslContext = SSLContext.getInstance("TLS").apply {
+            init(null, arrayOf(trustManager), SecureRandom())
+        }
+
+        engine {
+            config {
+                sslSocketFactory(sslContext.socketFactory, trustManager)
+                hostnameVerifier { _, _ -> true }
+            }
+        }
+    }
+
+    config(this)
+}

kmp-socketio/src/jvmTest/kotlin/com/piasy/kmp/socketio/engineio/TestUtil.kt

@@ -43,7 +43,9 @@ object TestUtil {
 
     @JvmStatic
     fun closeManager(manager: Manager) {
-        manager.close()
+        manager.engine?.scope?.launch {
+            manager.close()
+        }
     }
 
     @JvmStatic