diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/LibuvAwaitable.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/LibuvAwaitable.cs
index 5c038a4456..7029a1c32e 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/LibuvAwaitable.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/LibuvAwaitable.cs
@@ -15,11 +15,11 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal
 
         private Action _callback;
 
-        private Exception _exception;
+        private UvException _exception;
 
         private int _status;
 
-        public static readonly Action<TRequest, int, Exception, object> Callback = (req, status, error, state) =>
+        public static readonly Action<TRequest, int, UvException, object> Callback = (req, status, error, state) =>
         {
             var awaitable = (LibuvAwaitable<TRequest>)state;
 
@@ -71,9 +71,9 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal
     public struct UvWriteResult
     {
         public int Status { get; }
-        public Exception Error { get; }
+        public UvException Error { get; }
 
-        public UvWriteResult(int status, Exception error)
+        public UvWriteResult(int status, UvException error)
         {
             Status = status;
             Error = error;
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Listener.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Listener.cs
index c1c562c574..e5b0a267fa 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Listener.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Listener.cs
@@ -93,7 +93,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal
             }
         }
 
-        private static void ConnectionCallback(UvStreamHandle stream, int status, Exception error, object state)
+        private static void ConnectionCallback(UvStreamHandle stream, int status, UvException error, object state)
         {
             var listener = (Listener)state;
 
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerPrimary.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerPrimary.cs
index 7159d82c2c..d154d31d85 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerPrimary.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerPrimary.cs
@@ -73,7 +73,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal
                 (pipe, status, error, state) => ((ListenerPrimary)state).OnListenPipe(pipe, status, error), this);
         }
 
-        private void OnListenPipe(UvStreamHandle pipe, int status, Exception error)
+        private void OnListenPipe(UvStreamHandle pipe, int status, UvException error)
         {
             if (status < 0)
             {
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerSecondary.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerSecondary.cs
index 4b43c9cf79..2571f6bb67 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerSecondary.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/ListenerSecondary.cs
@@ -78,13 +78,13 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal
             }
         }
 
-        private static void ConnectCallback(UvConnectRequest connect, int status, Exception error, TaskCompletionSource<int> tcs)
+        private static void ConnectCallback(UvConnectRequest connect, int status, UvException error, TaskCompletionSource<int> tcs)
         {
             var listener = (ListenerSecondary)tcs.Task.AsyncState;
             listener.ConnectedCallback(connect, status, error, tcs);
         }
 
-        private async void ConnectedCallback(UvConnectRequest connect, int status, Exception error, TaskCompletionSource<int> tcs)
+        private async void ConnectedCallback(UvConnectRequest connect, int status, UvException error, TaskCompletionSource<int> tcs)
         {
             connect.Dispose();
             if (error != null)
@@ -133,8 +133,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal
             {
                 if (status != LibuvConstants.EOF)
                 {
-                    Exception ex;
-                    Thread.Loop.Libuv.Check(status, out ex);
+                    Thread.Loop.Libuv.Check(status, out var ex);
                     Log.LogError(0, ex, "DispatchPipe.ReadStart");
                 }
 
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/LibuvFunctions.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/LibuvFunctions.cs
index 84572dae53..06e7030bef 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/LibuvFunctions.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/LibuvFunctions.cs
@@ -82,7 +82,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
             throw GetError(statusCode);
         }
 
-        public void Check(int statusCode, out Exception error)
+        public void Check(int statusCode, out UvException error)
         {
             // Note: method is explicitly small so the success case is easily inlined
             error = statusCode < 0 ? GetError(statusCode) : null;
@@ -345,14 +345,14 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
 
         protected delegate int uv_ip4_addr_func(string ip, int port, out SockAddr addr);
         protected uv_ip4_addr_func _uv_ip4_addr;
-        public void ip4_addr(string ip, int port, out SockAddr addr, out Exception error)
+        public void ip4_addr(string ip, int port, out SockAddr addr, out UvException error)
         {
             Check(_uv_ip4_addr(ip, port, out addr), out error);
         }
 
         protected delegate int uv_ip6_addr_func(string ip, int port, out SockAddr addr);
         protected uv_ip6_addr_func _uv_ip6_addr;
-        public void ip6_addr(string ip, int port, out SockAddr addr, out Exception error)
+        public void ip6_addr(string ip, int port, out SockAddr addr, out UvException error)
         {
             Check(_uv_ip6_addr(ip, port, out addr), out error);
         }
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvConnectRequest.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvConnectRequest.cs
index 0c0371e2bb..75c58b5434 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvConnectRequest.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvConnectRequest.cs
@@ -13,7 +13,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
     {
         private readonly static LibuvFunctions.uv_connect_cb _uv_connect_cb = (req, status) => UvConnectCb(req, status);
 
-        private Action<UvConnectRequest, int, Exception, object> _callback;
+        private Action<UvConnectRequest, int, UvException, object> _callback;
         private object _state;
 
         public UvConnectRequest(ILibuvTrace logger) : base (logger)
@@ -39,7 +39,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
         public void Connect(
             UvPipeHandle pipe, 
             string name, 
-            Action<UvConnectRequest, int, Exception, object> callback, 
+            Action<UvConnectRequest, int, UvException, object> callback, 
             object state)
         {
             _callback = callback;
@@ -58,7 +58,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
             var state = req._state;
             req._state = null;
 
-            Exception error = null;
+            UvException error = null;
             if (status < 0)
             {
                 req.Libuv.Check(status, out error);
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvStreamHandle.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvStreamHandle.cs
index 92663696ce..d847512fda 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvStreamHandle.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvStreamHandle.cs
@@ -14,7 +14,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
         private readonly static LibuvFunctions.uv_alloc_cb _uv_alloc_cb = (IntPtr handle, int suggested_size, out LibuvFunctions.uv_buf_t buf) => UvAllocCb(handle, suggested_size, out buf);
         private readonly static LibuvFunctions.uv_read_cb _uv_read_cb = (IntPtr handle, int status, ref LibuvFunctions.uv_buf_t buf) => UvReadCb(handle, status, ref buf);
 
-        private Action<UvStreamHandle, int, Exception, object> _listenCallback;
+        private Action<UvStreamHandle, int, UvException, object> _listenCallback;
         private object _listenState;
         private GCHandle _listenVitality;
 
@@ -40,7 +40,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
             return base.ReleaseHandle();
         }
 
-        public void Listen(int backlog, Action<UvStreamHandle, int, Exception, object> callback, object state)
+        public void Listen(int backlog, Action<UvStreamHandle, int, UvException, object> callback, object state)
         {
             if (_listenVitality.IsAllocated)
             {
@@ -123,8 +123,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
         {
             var stream = FromIntPtr<UvStreamHandle>(handle);
 
-            Exception error;
-            stream.Libuv.Check(status, out error);
+            stream.Libuv.Check(status, out var error);
 
             try
             {
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvTcpHandle.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvTcpHandle.cs
index 1e3a1409cd..7bb6e0e908 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvTcpHandle.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvTcpHandle.cs
@@ -33,13 +33,11 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
             SockAddr addr;
             var addressText = endPoint.Address.ToString();
 
-            Exception error1;
-            _uv.ip4_addr(addressText, endPoint.Port, out addr, out error1);
+            _uv.ip4_addr(addressText, endPoint.Port, out addr, out var error1);
 
             if (error1 != null)
             {
-                Exception error2;
-                _uv.ip6_addr(addressText, endPoint.Port, out addr, out error2);
+                _uv.ip6_addr(addressText, endPoint.Port, out addr, out var error2);
                 if (error2 != null)
                 {
                     throw error1;
diff --git a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvWriteReq.cs b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvWriteReq.cs
index ab14ffdf2b..05b60ca679 100644
--- a/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvWriteReq.cs
+++ b/src/Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv/Internal/Networking/UvWriteReq.cs
@@ -19,7 +19,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
 
         private IntPtr _bufs;
 
-        private Action<UvWriteReq, int, Exception, object> _callback;
+        private Action<UvWriteReq, int, UvException, object> _callback;
         private object _state;
         private const int BUFFER_COUNT = 4;
 
@@ -64,7 +64,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
         private unsafe void Write(
             UvStreamHandle handle,
             ReadableBuffer buffer,
-            Action<UvWriteReq, int, Exception, object> callback,
+            Action<UvWriteReq, int, UvException, object> callback,
             object state)
         {
             try
@@ -136,7 +136,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
         private void Write(
             UvStreamHandle handle,
             ArraySegment<ArraySegment<byte>> bufs,
-            Action<UvWriteReq, int, Exception, object> callback,
+            Action<UvWriteReq, int, UvException, object> callback,
             object state)
         {
             WriteArraySegmentInternal(handle, bufs, sendHandle: null, callback: callback, state: state);
@@ -146,7 +146,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
             UvStreamHandle handle,
             ArraySegment<ArraySegment<byte>> bufs,
             UvStreamHandle sendHandle,
-            Action<UvWriteReq, int, Exception, object> callback,
+            Action<UvWriteReq, int, UvException, object> callback,
             object state)
         {
             WriteArraySegmentInternal(handle, bufs, sendHandle, callback, state);
@@ -156,7 +156,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
             UvStreamHandle handle,
             ArraySegment<ArraySegment<byte>> bufs,
             UvStreamHandle sendHandle,
-            Action<UvWriteReq, int, Exception, object> callback,
+            Action<UvWriteReq, int, UvException, object> callback,
             object state)
         {
             try
@@ -237,7 +237,7 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Transport.Libuv.Internal.Networkin
             var state = req._state;
             req._state = null;
 
-            Exception error = null;
+            UvException error = null;
             if (status < 0)
             {
                 req.Libuv.Check(status, out error);