Cannot access a disposed object.\nObject name: 'System.Net.Sockets.NetworkStream when sending photo

Hello! This is a second version of this quesion asked in https://forums.xamarin.com/discussion/127951/cannot-access-a-disposed-object-exception-when-trying-to-send-a-json-string-made-from-byte-pic#latest which makes now a bit more sense I hope.

I am having a Cannot access a disposed object.\nObject name: 'System.Net.Sockets.NetworkStream exception thrown any time I try to send a picture from gallery to my server.

For debuging purposes I have made two methods where one works and one doesn't. The one that works uses a dummy byte array and the one that doesn't takes the picture Stream object and makes a byte array from it. I hooked both methods up to OnImagePickerFinishedPickingMedia.

So we have a button on screen in the shared PCL code which calls on click

await DependencyService.Get().GetImageStreamAsync();
Just for debuging pruposes I made all code to happen in one place so its easier to track the bug. Inside the GetImageStreamAsync()

    public Task<byte[]> GetImageStreamAsync()
    {
        // Create and define UIImagePickerController
        imagePicker = new UIImagePickerController
        {
            SourceType = UIImagePickerControllerSourceType.PhotoLibrary,
            MediaTypes = UIImagePickerController.AvailableMediaTypes(UIImagePickerControllerSourceType.PhotoLibrary)
        };

        // Set event handlers
        imagePicker.FinishedPickingMedia += OnImagePickerFinishedPickingMedia;
        imagePicker.Canceled += OnImagePickerCancelled;

        // Present UIImagePickerController;
        UIWindow window = UIApplication.SharedApplication.KeyWindow;
        var viewController = window.RootViewController;
        viewController.PresentModalViewController(imagePicker, true);

        // Return Task object
        taskCompletionSource = new TaskCompletionSource<byte[]>();
        return taskCompletionSource.Task;
    }

This part is the same for both methods and is a complete copy of what you can get off some Xamarin examples.

Now here is the method that works and writes an array to db with no issues:

    void OnImagePickerFinishedPickingMedia(object sender, UIImagePickerMediaPickedEventArgs args)
    {
        UIImage image = args.EditedImage ?? args.OriginalImage;

        if (image != null)
        {
            // Convert UIImage to .NET Stream object
            NSData data = image.AsJPEG(1);
            Stream stream = data.AsStream();
            var arrayData = data.ToArray();

        try
        {

            CallMe();

        }
        catch (Exception e)
        {
            Xamarin.Forms.Application.Current.MainPage.DisplayAlert("Repository Error 3",
            Errors.RepositoryError_3 + Environment.NewLine + e.ToString(), "Ok");
        }


        taskCompletionSource.SetResult(arrayData);
        }
        else
        {
            taskCompletionSource.SetResult(null);
        }
        imagePicker.DismissModalViewController(true);
    }

    private async void CallMe()
    {
        try
        {
            string xq = "csdcsdc";
            byte[] byteArray = Encoding.UTF8.GetBytes(xq);
            var gal = new GalleryResource()
            {
                Pic = byteArray
            };

            var c = RepositoryService.ConvertObjectToStringContentStatic(gal);
            var client = new HttpClient();
            var response = await client.PostAsync(Settings.EndPoint + "api/gallery/", c);

        }
        catch (Exception e)
        {
            Xamarin.Forms.Application.Current.MainPage.DisplayAlert("Call me!!!",
            Errors.RepositoryError_3 + Environment.NewLine + e.ToString(), "Ok");
        }

    }

Here is the one that FAILS:

    private async void CallMe()
    {
        try
        {
            string xq = "csdcsdc";
            byte[] byteArray = Encoding.UTF8.GetBytes(xq);
            var gal = new GalleryResource()
            {
                Pic = byteArray
            };

            var c = RepositoryService.ConvertObjectToStringContentStatic(gal);
            var client = new HttpClient();
            var response = await client.PostAsync(Settings.EndPoint + "api/gallery/", c);

        }
        catch (Exception e)
        {
            Xamarin.Forms.Application.Current.MainPage.DisplayAlert("Call me!!!",
            Errors.RepositoryError_3 + Environment.NewLine + e.ToString(), "Ok");
        }

    }


    void OnImagePickerFinishedPickingMedia(object sender, UIImagePickerMediaPickedEventArgs args)
    {
        UIImage image = args.EditedImage ?? args.OriginalImage;

        if (image != null)
        {
            // Convert UIImage to .NET Stream object
            NSData data = image.AsJPEG(1);
            Stream stream = data.AsStream();
            var arrayData = data.ToArray();

        try
        {

            CallMe(arrayData);

        }
        catch (Exception e)
        {
            Xamarin.Forms.Application.Current.MainPage.DisplayAlert("Repository Error 3",
            Errors.RepositoryError_3 + Environment.NewLine + e.ToString(), "Ok");
        }


        taskCompletionSource.SetResult(arrayData);
        }
        else
        {
            taskCompletionSource.SetResult(null);
        }
        imagePicker.DismissModalViewController(true);
    }

    private async void CallMe(byte[] byteArray)
    {
        try
        {
            string xq = "csdcsdc";
            //byte[] byteArray = Encoding.UTF8.GetBytes(xq);
            var gal = new GalleryResource()
            {
                Pic = byteArray
            };

            var c = RepositoryService.ConvertObjectToStringContentStatic(gal);
            var client = new HttpClient();
            var response = await client.PostAsync(Settings.EndPoint + "api/gallery/", c);

        }
        catch (Exception e)
        {
            Xamarin.Forms.Application.Current.MainPage.DisplayAlert("Call me!!!",
            Errors.RepositoryError_3 + Environment.NewLine + e.ToString(), "Ok");
        }

    }

If anyone has any ideas on why does an exception pop up in the second place I will be really greatfull. So far I have tried numerous ways to execute this code but have not yet found a solution. Thanks.