private WebResponse GetDestinationResponse(WebPageState state, Uri redirect = null)
{
Uri requestUri = redirect ?? state.Uri;
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestUri);
request.Method = "GET";
request.UserAgent = Config.UserAgent;
request.AllowAutoRedirect = false;
if (Options != null && Options.Credential != null)
{
request.Credentials = Options.Credential;
}
bool isRedirect = false;
HttpWebResponse response = null;
try
{
if ((response = request.GetResponse() as HttpWebResponse) == null)
{
return(null);
}
if (redirect == null)
{
state.StatusCode = response.StatusCode;
}
else if (state.Redirects.Count > 0)
{
state.Redirects[state.Redirects.Count - 1].StatusCode = response.StatusCode;
}
state.StatusCodeDescription = response.StatusDescription;
if (WebPageState.GetStatus(response.StatusCode) == WebPageState.PageStatus.Redirect)
{
isRedirect = true;
requestUri = new Uri(response.Headers["Location"]);
state.Redirects.Add(new WebPageState.WebRequestState {
Uri = requestUri
});
}
else if (response.ContentType.StartsWith("text", StringComparison.OrdinalIgnoreCase))
{
Stream stream = response.GetResponseStream();
if (stream != null)
{
state.Content = new StreamReader(stream).ReadToEnd();
}
}
}
catch (WebException ex)
{
Logger.LogException(LogLevel.Fatal, ex.Status.ToString(), ex);
if (ex.Response != null && ex.Response is HttpWebResponse)
{
state.StatusCode = ((HttpWebResponse)ex.Response).StatusCode;
state.StatusCodeDescription = ((HttpWebResponse)ex.Response).StatusDescription;
}
}
finally
{
if (response != null)
{
response.Close();
}
}
return(isRedirect ? GetDestinationResponse(state, requestUri) : response);
}
