Add way to create an unsafe client

Author: Minnullin Niyaz

kmp-socketio/src/appleMain/kotlin/com/piasy/kmp/socketio/engineio/transports/transport_impl.kt

@@ -1,9 +1,28 @@
 package com.piasy.kmp.socketio.engineio.transports
 
-import io.ktor.client.HttpClientConfig
 import io.ktor.client.HttpClient
+import io.ktor.client.HttpClientConfig
 import io.ktor.client.engine.darwin.Darwin
+import platform.Foundation.NSURLCredential
+import platform.Foundation.NSURLSessionAuthChallengePerformDefaultHandling
+import platform.Foundation.NSURLSessionAuthChallengeUseCredential
+import platform.Foundation.create
+import platform.Foundation.serverTrust
+import platform.Security.SecTrustRef
 
-actual fun httpClient(config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(Darwin) {
+actual fun httpClient(trustAllCerts: Boolean, config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(Darwin) {
     config(this)
+    engine {
+        if (trustAllCerts) {
+            handleChallenge { session, task, challenge, completionHandler ->
+                val serverTrust: SecTrustRef? = challenge.protectionSpace.serverTrust
+                if (serverTrust != null) {
+                    val credential = NSURLCredential.create(trust = serverTrust)
+                    completionHandler(NSURLSessionAuthChallengeUseCredential.toLong(), credential)
+                } else {
+                    completionHandler(NSURLSessionAuthChallengePerformDefaultHandling.toLong(), null)
+                }
+            }
+        }
+    }
 }

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

@@ -11,7 +11,7 @@ import io.ktor.client.statement.*
 import io.ktor.http.*
 import kotlinx.coroutines.CoroutineScope
 
-expect fun httpClient(config: HttpClientConfig<*>.() -> Unit = {}): HttpClient
+expect fun httpClient(trustAllCerts: Boolean = false, config: HttpClientConfig<*>.() -> Unit = {}): HttpClient
 
 internal fun putHeaders(
     builder: HeadersBuilder,

kmp-socketio/src/jsMain/kotlin/com/piasy/kmp/socketio/engineio/transports/transport_impl.kt

@@ -4,6 +4,7 @@ import io.ktor.client.HttpClientConfig
 import io.ktor.client.HttpClient
 import io.ktor.client.engine.js.Js
 
-actual fun httpClient(config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(Js) {
+actual fun httpClient(trustAllCerts: Boolean, config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(Js) {
     config(this)
+    /** Ignore `unsafeClient` variable */
 }

kmp-socketio/src/jvmMain/kotlin/com/piasy/kmp/socketio/engineio/transports/transport_impl.kt

@@ -3,7 +3,22 @@ package com.piasy.kmp.socketio.engineio.transports
 import io.ktor.client.HttpClientConfig
 import io.ktor.client.HttpClient
 import io.ktor.client.engine.cio.CIO
+import java.security.cert.X509Certificate
+import javax.net.ssl.X509TrustManager
 
-actual fun httpClient(config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(CIO) {
+actual fun httpClient(trustAllCerts: Boolean, config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(CIO) {
     config(this)
+    if (trustAllCerts) {
+        engine {
+            https {
+                trustManager = object: X509TrustManager {
+                    override fun checkClientTrusted(p0: Array<out X509Certificate>?, p1: String?) { }
+
+                    override fun checkServerTrusted(p0: Array<out X509Certificate>?, p1: String?) { }
+
+                    override fun getAcceptedIssuers(): Array<X509Certificate>? = null
+                }
+            }
+        }
+    }
 }

kmp-socketio/src/linuxMain/kotlin/com/piasy/kmp/socketio/engineio/transports/transport_impl.kt

@@ -4,6 +4,11 @@ import io.ktor.client.HttpClientConfig
 import io.ktor.client.HttpClient
 import io.ktor.client.engine.curl.Curl
 
-actual fun httpClient(config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(Curl) {
+actual fun httpClient(trustAllCerts: Boolean, config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(Curl) {
     config(this)
+    if (trustAllCerts) {
+        engine {
+            sslVerify = false
+        }
+    }
 }

kmp-socketio/src/mingwMain/kotlin/com/piasy/kmp/socketio/engineio/transports/transport_impl.kt

@@ -4,6 +4,11 @@ import io.ktor.client.HttpClientConfig
 import io.ktor.client.HttpClient
 import io.ktor.client.engine.winhttp.WinHttp
 
-actual fun httpClient(config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(WinHttp) {
+actual fun httpClient(trustAllCerts: Boolean, config: HttpClientConfig<*>.() -> Unit): HttpClient = HttpClient(WinHttp) {
     config(this)
+    if (trustAllCerts) {
+        engine {
+            sslVerify = false
+        }
+    }
 }