public void BeginGetResponseAsynch(HttpAsynchCallback callback)
{
_callback = callback;
CreateRequest();
_httpRequest.BeginGetResponse(new AsyncCallback(GetResponseCallback), this);
}
protected HttpTransaction(String uri, String method)
{
URI = uri;
Method = method;
ParameterList = new Dictionary <string, string>();
SslValidationDisabled = false;
_shortMessage = null;
_callback = null;
Success = false;
}