private bool IsServerChanged(ThreadHeader h)
{
X2chServerTracer server = new X2chServerTracer();
if (server.Trace(h.BoardInfo, true))
{
h.BoardInfo = server.Result;
return(true);
}
return(false);
}
/// <summary>
/// 板を開く
/// </summary>
/// <param name="info"></param>
public override bool Open(BoardInfo info)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (isOpen)
{
throw new InvalidOperationException("既にストリームが開かれています");
}
Redirect:
// 板の移転チェック
bool trace = false;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(info.Url + "subject.txt");
req.Timeout = 30000;
req.UserAgent = UserAgent;
req.AllowAutoRedirect = false;
req.Headers.Add("Accept-Encoding", "gzip");
req.Headers.Add("Pragma", "no-cache");
req.Headers.Add("Cache-Control", "no-cache");
_res = (HttpWebResponse)req.GetResponse();
//IAsyncResult ar = req.BeginGetResponse(null, null);
//if (!ar.IsCompleted)
//{
// if (canceled)
// {
// req.Abort();
// return false;
// }
// Thread.Sleep(100);
//}
//_res = (HttpWebResponse)req.EndGetResponse(ar);
baseStream = _res.GetResponseStream();
boardinfo = info;
// Subject.txtが取得できてContent-Lengthが0、
// またはStatusCodeがFoundの場合は板が移転したかも
if (_res.StatusCode == HttpStatusCode.OK)
{
position = 0;
length = (int)_res.ContentLength;
isOpen = true;
if (_res.ContentEncoding.EndsWith("gzip"))
{
using (GZipStream gzipInp = new GZipStream(baseStream, CompressionMode.Decompress))
baseStream = FileUtility.CreateMemoryStream(gzipInp);
length = (int)baseStream.Length;
}
if (length == 0)
{
trace = true;
}
}
else
{
if (_res.StatusCode == HttpStatusCode.Found)
{
trace = true;
}
_res.Close();
_res = null;
}
if (trace)
{
// 板移転の可能性
X2chServerTracer tracer = new X2chServerTracer();
if (tracer.Trace(boardinfo, true))
{
BoardInfo newbrd = tracer.Result;
OnServerChange(new ServerChangeEventArgs(boardinfo, newbrd, tracer.TraceList));
if (AutoRedirect)
{
info = newbrd;
if (_res != null)
{
_res.Close();
}
goto Redirect;
}
}
}
return(isOpen);
}
