static void Main(string[] args)
{
string url = "https://popl21.sigplan.org/";
HttpWebRequestWrapper newHttpWebRequestWrapper = new HttpWebRequestWrapper(url, 100);
newHttpWebRequestWrapper.GetRequestStreamAsync();
NameValueCollection nvc = new NameValueCollection();
newHttpWebRequestWrapper.WriteParameterAsync(nvc);
string fileStreamName = "file";
Stream newfilestream = File.OpenRead(fileStreamName);
newHttpWebRequestWrapper.WriteStreamAsync(newfilestream, fileStreamName);
newHttpWebRequestWrapper.WriteEndBoundaryAsync();
}