Write a blocking UnityWebRequest deliberately (for educational purpose)

Hi all, I wanted to write a method that blocks the UI while downloading an image through a UnityWebRequest but I can't get it working.

Here is the code:

Code (CSharp):

1. public void LoadImage()
2.     {
3.         using (UnityWebRequest httpClient = new UnityWebRequest("https://spdvistorage.blob.core.windows.net/clickycrates-blobs/default/4-2-pokemon-transparent.png"))
4.         {
5.             Debug.Log("Getting image...");
6.             httpClient.downloadHandler = new DownloadHandlerTexture();
7.             httpClient.SendWebRequest(); // blocking call?
8.             while (httpClient.downloadProgress < 1.0f)
9.             {
10.                 Thread.Sleep(100);
11.                 Debug.Log(httpClient.downloadProgress * 100 + "% (Bytes downloaded: " + httpClient.downloadedBytes/1024 + " KB");
12.             }
13.             Thread.Sleep(1000);
14.             Debug.Log("hpptClient.isDone = " + httpClient.isDone);
15.             if (httpClient.isNetworkError || httpClient.isHttpError)
16.             {
17.                 Debug.Log(httpClient.error);
18.             }
19.             else
20.             {
21.                 Texture2D texture = DownloadHandlerTexture.GetContent(httpClient);
22.                 image.sprite = Sprite.Create(texture, new Rect(0.0f, 0.0f, texture.width, texture.height), new Vector2(0.5f, 0.5f), 100.0f);
23.             }
24.         }
25.     }

but I get an

Code (csharp):

1. InvalidOperationException: Cannot get content from an unfinished UnityWebRequest object

in line

Code (csharp):

1. Texture2D texture = DownloadHandlerTexture.GetContent(httpClient);

Also

Code (csharp):

1. Debug.Log("hpptClient.isDone = " + httpClient.isDone);

returns false.

Any hint on how could I achieve this?

Of course the main goal is later convert this to a Coroutine to show the UI is still responding, but I'm specially interested first in showing how this call blocks the UI.

Thanks in advance!

 

Thanks a lot! That was what I was looking for!!!