diff --git a/aws-crt-kotlin/api/aws-crt-kotlin.api b/aws-crt-kotlin/api/aws-crt-kotlin.api
index a3b2904b..3cd5147b 100644
--- a/aws-crt-kotlin/api/aws-crt-kotlin.api
+++ b/aws-crt-kotlin/api/aws-crt-kotlin.api
@@ -719,6 +719,7 @@ public final class aws/sdk/kotlin/crt/io/BufferKt {
 }
 
 public final class aws/sdk/kotlin/crt/io/ClientBootstrap : aws/sdk/kotlin/crt/AsyncShutdown, aws/sdk/kotlin/crt/Closeable {
+	public fun <init> ()V
 	public fun <init> (Laws/sdk/kotlin/crt/io/EventLoopGroup;Laws/sdk/kotlin/crt/io/HostResolver;)V
 	public fun close ()V
 	public fun waitForShutdown (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
@@ -733,6 +734,7 @@ public final class aws/sdk/kotlin/crt/io/EventLoopGroup : aws/sdk/kotlin/crt/Asy
 }
 
 public final class aws/sdk/kotlin/crt/io/HostResolver : aws/sdk/kotlin/crt/AsyncShutdown, aws/sdk/kotlin/crt/Closeable {
+	public fun <init> ()V
 	public fun <init> (Laws/sdk/kotlin/crt/io/EventLoopGroup;)V
 	public fun <init> (Laws/sdk/kotlin/crt/io/EventLoopGroup;I)V
 	public fun close ()V
diff --git a/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/ClientBootstrap.kt b/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/ClientBootstrap.kt
index e0c18745..56c3755d 100644
--- a/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/ClientBootstrap.kt
+++ b/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/ClientBootstrap.kt
@@ -15,6 +15,8 @@ import aws.sdk.kotlin.crt.Closeable
 public expect class ClientBootstrap(elg: EventLoopGroup, hr: HostResolver) :
     Closeable,
     AsyncShutdown {
+    public constructor()
+
     override suspend fun waitForShutdown()
     override fun close()
 }
diff --git a/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/HostResolver.kt b/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/HostResolver.kt
index ab93a204..5744bde3 100644
--- a/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/HostResolver.kt
+++ b/aws-crt-kotlin/common/src/aws/sdk/kotlin/crt/io/HostResolver.kt
@@ -14,6 +14,8 @@ public expect class HostResolver(elg: EventLoopGroup, maxEntries: Int) :
     Closeable,
     AsyncShutdown {
     public constructor(elg: EventLoopGroup)
+    public constructor()
+
     override fun close()
     override suspend fun waitForShutdown()
 }
diff --git a/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/ClientBootstrapJVM.kt b/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/ClientBootstrapJVM.kt
index 1199b38b..50b8976d 100644
--- a/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/ClientBootstrapJVM.kt
+++ b/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/ClientBootstrapJVM.kt
@@ -10,13 +10,27 @@ import aws.sdk.kotlin.crt.Closeable
 import kotlinx.coroutines.future.await
 import software.amazon.awssdk.crt.io.ClientBootstrap as ClientBootstrapJni
 
-public actual class ClientBootstrap actual constructor(elg: EventLoopGroup, hr: HostResolver) :
-    Closeable,
+public actual class ClientBootstrap private constructor(
+    private val elg: EventLoopGroup,
+    private val manageElg: Boolean,
+    private val hr: HostResolver,
+    private val manageHr: Boolean,
+) : Closeable,
     AsyncShutdown {
+
+    public actual constructor() : this(EventLoopGroup(), true)
+
+    private constructor(elg: EventLoopGroup, manageElg: Boolean) : this(elg, manageElg, HostResolver(elg), true)
+
+    public actual constructor(elg: EventLoopGroup, hr: HostResolver) : this(elg, false, hr, false)
+
     internal val jniBootstrap = ClientBootstrapJni(elg.jniElg, hr.jniHr)
 
     actual override fun close() {
         jniBootstrap.close()
+
+        if (manageHr) hr.close()
+        if (manageElg) elg.close()
     }
 
     actual override suspend fun waitForShutdown() {
diff --git a/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/HostResolverJVM.kt b/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/HostResolverJVM.kt
index 559f6a87..b9994676 100644
--- a/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/HostResolverJVM.kt
+++ b/aws-crt-kotlin/jvm/src/aws/sdk/kotlin/crt/io/HostResolverJVM.kt
@@ -9,15 +9,22 @@ import aws.sdk.kotlin.crt.AsyncShutdown
 import aws.sdk.kotlin.crt.Closeable
 import software.amazon.awssdk.crt.io.HostResolver as HostResolverJni
 
-public actual class HostResolver actual constructor(elg: EventLoopGroup, maxEntries: Int) :
-    Closeable,
+public actual class HostResolver private constructor(
+    private val elg: EventLoopGroup,
+    private val manageElg: Boolean,
+    maxEntries: Int,
+) : Closeable,
     AsyncShutdown {
     internal val jniHr = HostResolverJni(elg.jniElg, maxEntries)
 
-    public actual constructor(elg: EventLoopGroup) : this(elg, DEFAULT_MAX_ENTRIES)
+    public actual constructor(elg: EventLoopGroup, maxEntries: Int) : this(elg, false, maxEntries)
+    public actual constructor(elg: EventLoopGroup) : this(elg, false, DEFAULT_MAX_ENTRIES)
+    public actual constructor() : this(EventLoopGroup(), true, DEFAULT_MAX_ENTRIES)
 
     actual override fun close() {
         jniHr.close()
+
+        if (manageElg) elg.close()
     }
 
     actual override suspend fun waitForShutdown() {
diff --git a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/ClientBootstrapNative.kt b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/ClientBootstrapNative.kt
index fdd3e576..a9246616 100644
--- a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/ClientBootstrapNative.kt
+++ b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/ClientBootstrapNative.kt
@@ -5,8 +5,10 @@
 
 package aws.sdk.kotlin.crt.io
 
-import aws.sdk.kotlin.crt.*
 import aws.sdk.kotlin.crt.Allocator
+import aws.sdk.kotlin.crt.AsyncShutdown
+import aws.sdk.kotlin.crt.Closeable
+import aws.sdk.kotlin.crt.NativeHandle
 import aws.sdk.kotlin.crt.util.ShutdownChannel
 import aws.sdk.kotlin.crt.util.shutdownChannel
 import kotlinx.cinterop.*
@@ -16,12 +18,19 @@ import libcrt.aws_client_bootstrap_options
 import libcrt.aws_client_bootstrap_release
 
 @OptIn(ExperimentalForeignApi::class)
-public actual class ClientBootstrap actual constructor(
-    elg: EventLoopGroup,
-    hr: HostResolver,
+public actual class ClientBootstrap private constructor(
+    private val elg: EventLoopGroup,
+    private val manageElg: Boolean,
+    private val hr: HostResolver,
+    private val manageHr: Boolean,
 ) : NativeHandle<aws_client_bootstrap>,
     Closeable,
     AsyncShutdown {
+
+    public actual constructor() : this(EventLoopGroup(), true)
+    private constructor(elg: EventLoopGroup, manageElg: Boolean) : this(elg, manageElg, HostResolver(elg), true)
+    public actual constructor(elg: EventLoopGroup, hr: HostResolver) : this(elg, false, hr, false)
+
     private val shutdownCompleteChannel = shutdownChannel()
     private val channelStableRef = StableRef.create(shutdownCompleteChannel)
     override val ptr: CPointer<aws_client_bootstrap>
@@ -45,6 +54,9 @@ public actual class ClientBootstrap actual constructor(
 
     actual override fun close() {
         aws_client_bootstrap_release(ptr)
+
+        if (manageHr) hr.close()
+        if (manageElg) elg.close()
     }
 }
 
diff --git a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/EventLoopGroupNative.kt b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/EventLoopGroupNative.kt
index 2c1bc6e1..0419980c 100644
--- a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/EventLoopGroupNative.kt
+++ b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/EventLoopGroupNative.kt
@@ -5,13 +5,18 @@
 
 package aws.sdk.kotlin.crt.io
 
-import aws.sdk.kotlin.crt.*
 import aws.sdk.kotlin.crt.Allocator
+import aws.sdk.kotlin.crt.AsyncShutdown
+import aws.sdk.kotlin.crt.Closeable
+import aws.sdk.kotlin.crt.NativeHandle
 import aws.sdk.kotlin.crt.util.ShutdownChannel
 import aws.sdk.kotlin.crt.util.shutdownChannel
 import cnames.structs.aws_event_loop_group
 import kotlinx.cinterop.*
-import libcrt.*
+import libcrt.aws_event_loop_group_new
+import libcrt.aws_event_loop_group_options
+import libcrt.aws_event_loop_group_release
+import libcrt.aws_shutdown_callback_options
 
 /**
  * Creates a new event loop group for the I/O subsystem to use to run blocking I/O requests
diff --git a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/HostResolverNative.kt b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/HostResolverNative.kt
index aa40c0de..7fe33e80 100644
--- a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/HostResolverNative.kt
+++ b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/HostResolverNative.kt
@@ -5,19 +5,27 @@
 
 package aws.sdk.kotlin.crt.io
 
-import aws.sdk.kotlin.crt.*
 import aws.sdk.kotlin.crt.Allocator
+import aws.sdk.kotlin.crt.AsyncShutdown
+import aws.sdk.kotlin.crt.Closeable
+import aws.sdk.kotlin.crt.NativeHandle
 import aws.sdk.kotlin.crt.util.ShutdownChannel
 import aws.sdk.kotlin.crt.util.shutdownChannel
 import kotlinx.cinterop.*
 import libcrt.*
 
 @OptIn(ExperimentalForeignApi::class)
-public actual class HostResolver actual constructor(elg: EventLoopGroup, maxEntries: Int) :
-    NativeHandle<aws_host_resolver>,
+public actual class HostResolver private constructor(
+    private val elg: EventLoopGroup,
+    private val manageElg: Boolean,
+    private val maxEntries: Int,
+) : NativeHandle<aws_host_resolver>,
     Closeable,
     AsyncShutdown {
-    public actual constructor(elg: EventLoopGroup) : this(elg, DEFAULT_MAX_ENTRIES)
+
+    public actual constructor(elg: EventLoopGroup, maxEntries: Int) : this(elg, false, maxEntries)
+    public actual constructor(elg: EventLoopGroup) : this(elg, false, DEFAULT_MAX_ENTRIES)
+    public actual constructor() : this(EventLoopGroup(), true, DEFAULT_MAX_ENTRIES)
 
     override val ptr: CPointer<aws_host_resolver>
 
@@ -49,6 +57,8 @@ public actual class HostResolver actual constructor(elg: EventLoopGroup, maxEntr
 
     actual override fun close() {
         aws_host_resolver_release(ptr)
+
+        if (manageElg) elg.close()
     }
 }
 
diff --git a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/TlsContextNative.kt b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/TlsContextNative.kt
index 4b86d8af..5fb2ce76 100644
--- a/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/TlsContextNative.kt
+++ b/aws-crt-kotlin/native/src/aws/sdk/kotlin/crt/io/TlsContextNative.kt
@@ -6,8 +6,6 @@
 package aws.sdk.kotlin.crt.io
 
 import aws.sdk.kotlin.crt.*
-import aws.sdk.kotlin.crt.Allocator
-import aws.sdk.kotlin.crt.awsAssertOpSuccess
 import aws.sdk.kotlin.crt.util.asAwsByteCursor
 import aws.sdk.kotlin.crt.util.free
 import aws.sdk.kotlin.crt.util.toAwsString