Big files uploading (WebException: The connection was closed unexpectedly)

Question

UPDATED

See post #3 below.

There is a need to upload a file to the web automatically (without browser). Host - Mini File Host v1.2 (if this does

Answer 1

In my case, duplicate filename causing the issue as well. I save the file's settings in an xml file but the name setting is duplicating each other.

      
        isp_main_
        308
        1080
        1080
      
      
        isp_thumb_ // pay attention to this
        308
        506
        506
      
      
        isp_thumb_ // and this
        306
        506
        506
      

And, in the other case I had, the issue is in the file length. Please do check the allowed file size on your server. In your script just do check this part :

dataStream.Write(filesBytesArray, 0, filesBytesArray.Length);
dataStream.Close();

And if you dont know, just limit the file uploaded size in your frontend section ie. HTML upload element, this is good reference for limiting file size and other filter.