fix: Make default HTTP client provider use the customer-provided config if present (#914)

Co-authored-by: Sichan Yoo <[email protected]>

Author: sichanyoo

Diff for: Sources/ClientRuntime/Config/ClientConfigDefaultsProvider.swift

@@ -17,9 +17,11 @@ public typealias RuntimeConfigType
 
 open class ClientConfigDefaultsProvider {
     /// Returns a default `HTTPClient` engine.
-    open class func httpClientEngine() -> HTTPClient {
+    open class func httpClientEngine(
+        _ config: HttpClientConfiguration? = nil
+    ) -> HTTPClient {
         return RuntimeConfigType.makeClient(
-            httpClientConfiguration: RuntimeConfigType.defaultHttpClientConfiguration
+            httpClientConfiguration: config ?? RuntimeConfigType.defaultHttpClientConfiguration
         )
     }
 

Diff for: Sources/ClientRuntime/Config/DefaultSDKRuntimeConfiguration.swift

@@ -98,9 +98,9 @@ public extension DefaultSDKRuntimeConfiguration {
         let socketTimeout = UInt32(httpClientConfiguration.socketTimeout)
         let config = CRTClientEngineConfig(
             telemetry: httpClientConfiguration.telemetry ?? CRTClientEngine.noOpCrtClientEngineTelemetry,
-          connectTimeoutMs: connectTimeoutMs,
-          crtTlsOptions: httpClientConfiguration.tlsConfiguration as? CRTClientTLSOptions,
-          socketTimeout: socketTimeout
+            connectTimeoutMs: connectTimeoutMs,
+            crtTlsOptions: httpClientConfiguration.tlsConfiguration as? CRTClientTLSOptions,
+            socketTimeout: socketTimeout
         )
         return CRTClientEngine(config: config)
         #endif