Upload video to Facebook from the server - facebook

Question

I have a problem when uploading videos to Facebook.
I use Facebook SDK for Android: https://github.com/facebook/facebook-android-sdk to get the access token with the following permissions: "publish_stream","email","video_upload","publish_actions"
Then I send token to the server, which should upload the video. The server tries to upload video using following code:
string fullurl = string.Format("https://graph-video.facebook.com/me/videos?title={0}&description={1}&access_token={2}", HttpUtility.UrlEncode(fileName), HttpUtility.UrlEncode(description), token);
Facebook returns an error:
System.Net.WebException: The remote server returned an error: (400) Bad Request.
at System.Net.WebClient.UploadFile(Uri address, String method, String fileName)
at System.Net.WebClient.UploadFile(String address, String fileName)
But, when I check token with the following link: https://graph.facebook.com/me?access_token=myToken Facebook returns user info. That means that token is valid. But, if this request returns error code, where I can find information about error codes?
This solution works perfectly for some users, for other users it works unstable ( 4 of 6 videos uploading failed. Facebook returns that: "connection closed by remote server"). And have not worked for some users with error: "The remote server returned an error: (400) Bad Request".
What is wrong in my code?

Answer 1

I've solve the problem. I have start using facebook SDK for .NET http://facebooksdk.net/ and it works for me.
Facebook.FacebookClient fb = new FacebookClient(facebookEditTask.facebookToken);
fb.PostCompleted += (o, e) =>
{
if (e.Cancelled || e.Error != null)
{
return;
}
var result = e.GetResultData();
facebookVideoUrl = CreateLinkToVideo(result.ToString());
};
dynamic parameters = new ExpandoObject();
parameters.source = new FacebookMediaStream
{
ContentType = "video/mp4",
FileName = Path.GetFileName(facebookEditTask.FilePath)
}.SetValue(File.OpenRead(facebookEditTask.FilePath));
parameters.message = fbMessage;
Task t = fb.PostTaskAsync("me/videos",
new { message = fbMessage, parameters.source });