More error checks

Author: kersny

src/Libuv/PipeServer.cs

@@ -26,19 +26,20 @@ public PipeServer(Action<PipeSocket> callback)
 		{
 			this.callback = callback;
 			this._handle = Marshal.AllocHGlobal(Sizes.PipeT);
-			uv_pipe_init(this._handle);
+			Util.CheckError(uv_pipe_init(this._handle));
 			var handle = (uv_handle_t)Marshal.PtrToStructure(this._handle, typeof(uv_handle_t));
 			this.me = GCHandle.Alloc(this);
 			handle.data = GCHandle.ToIntPtr(this.me);
 			Marshal.StructureToPtr(handle, this._handle, true);
 		}
 		public void Listen(string endpoint)
 		{
-			uv_pipe_bind(this._handle, endpoint);
-			uv_listen(this._handle, 128, unmanaged_callback);
+			Util.CheckError(uv_pipe_bind(this._handle, endpoint));
+			Util.CheckError(uv_listen(this._handle, 128, unmanaged_callback));
 		}
 		public static void StaticCallback(IntPtr server_ptr, int status)
 		{
+			Util.CheckError(status);
 			var handle = (uv_handle_t)Marshal.PtrToStructure(server_ptr, typeof(uv_handle_t));
 			var instance = GCHandle.FromIntPtr(handle.data);
 			var server = (PipeServer)instance.Target;

src/Libuv/TcpServer.cs

@@ -42,6 +42,7 @@ public void Listen(IPEndPoint endpoint)
 		}
 		public static void StaticCallback(IntPtr server_ptr, int status)
 		{
+			Util.CheckError(status);
 			var handle = (uv_handle_t)Marshal.PtrToStructure(server_ptr, typeof(uv_handle_t));
 			var instance = GCHandle.FromIntPtr(handle.data);
 			var server = (TcpServer)instance.Target;