[mono-android] System.Net.WebClient.UploadFileAsync Problem

[Gonzalo Paniagua Javier]

On Thu, Jan 19, 2012 at 11:10 AM, Gonzalo Paniagua Javier
<gonzalo.mono at gmail.com> wrote:
> On Thu, Jan 19, 2012 at 10:57 AM, subsembly <a.selle at subsembly.com> wrote:
>> It's not a feature request. It's a SEVERE BUG in the Mono WebClient
>> implementation!
>
> Ok. Since the world is going to end, I will take a look just to make
> sure that it is just a common bug and can be fixed quickly ;-).

Turns out the world is not going to end today. This is not a bug.

The following program:
---------------

using System;
using System.Net;
using System.Threading;

class Test {
	static void Main ()
	{
		ManualResetEvent evt = new ManualResetEvent (false);
		WebClient wc = new WebClient ();
		wc.UploadFileCompleted +=  new UploadFileCompletedEventHandler (CB);
		wc.UploadFileAsync (new Uri ("http://127.0.0.1:9000/"), "POST",
"uploadfile.cs", evt);
		evt.WaitOne ();
	}

	static void CB (object sender, UploadFileCompletedEventArgs e)
	{
		if (!e.Cancelled && e.Error == null) {
			Console.WriteLine ("File uploaded");
		} else {
			Console.WriteLine ("Something went wrong");
			Console.WriteLine (e.Error);
		}
		((ManualResetEvent) e.UserState).Set ();

	}
}
--------------

when run under MS.NET has this at the beginning of the body:
 -----------------------8cea4b4aff65c6b
 Content-Disposition: form-data; name="file"; filename="uploadfile.cs"
 Content-Type: application/octet-stream

The same program run using Mono yields:
--------------8cea4b552ea3188
Content-Disposition: form-data; name="file"; filename="uploadfile.cs"
Content-Type: application/octet-stream

Perhaps what you want is more like:
   file.ReadAllBytes ("yourfile");
   wc.UploadData (...).


Cheers.

-Gonzalo