void NetworkReadCallback(IAsyncResult ar)
{
var count = 0;
try
{
count = AsyncData.Stream.EndRead(ar);
if (count > 0)
{
ResultStream.Write(_buffer, 0, count);
}
}
catch (Exception exception)
{
AsyncData.Exception = exception;
CompleteCallback();
return;
}
if (count == 0)
{
ProcessFinalResponse();
ResultStream.Seek(0, SeekOrigin.Begin);
CompleteCallback();
}
else
{
AsyncData.Stream.BeginRead(_buffer, 0, _buffer.Length, NetworkReadCallback, this);
}
}
public void SubmitToStream(BuiltinReportDescriptor descriptor)
{
/* load the master template */
var raw = LoadTemplate("builtinreport.ent", descriptor.m);
/* do we need the JS libraries of amline? */
if (NeedsAMJSLines)
{
var flashscript = LoadTemplate("am_embed_js.html", descriptor.m);
raw.Set("flashscript", flashscript.ToString());
}
else
{
raw.Set("flashscript", String.Empty); /* added [dlatikay 20120202] */
}
/* perform the replacements */
raw.Set("title", descriptor.ReportPageTitle);
raw.Set("dqp", descriptor.DQP); /* added [dlatikay 20120209] */
raw.Set("onloadaction", descriptor.Outputformat == FileType.ft_html ? "window.print();" : String.Empty); /* added [dlatikay 20120209] */
raw.Set("header", header == null ? String.Empty : header.ToString());
raw.Set("meta", meta == null ? String.Empty : meta.ToString());
var compositecontent = new StringBuilder();
var partcounter = 0;
foreach (var part in parts)
{
compositecontent.AppendFormat("{1}{0}{2}", part.ToString(), (((++partcounter) <= 1) ? String.Empty : "<!-- section ruler -->"), Environment.NewLine);
}
raw.Set("rendition", compositecontent.ToString());
raw.Set("footer", String.Format("<span id=\"builtinreport_footer\">{0}</span>", HttpUtility.HtmlEncode(String.Format(descriptor.m(3252), descriptor.Systemname, descriptor.Systemversion, descriptor.ReportCreationTimestamp)))); /* Created using en-software SHERM v2.1 */
raw.Set("onafterprint", descriptor.Outputformat == dal.business.FileType.ft_pdf ? "JavaScript:window.location.href='about:blank';" : String.Empty); /* when we are rendering a pdf, we will print it to the postscript printer. therefore we need this to allow the silent host browser to detect when printing has finished */
/* [dlatikay 20111202] if we want html, we get html;
* stream it out: */
if (descriptor.Outputformat == dal.business.FileType.ft_html)
{
byte[] html = System.Text.UTF8Encoding.UTF8.GetBytes(raw.ToString());
ResultStream.Write(html, 0, html.Length);
}
/* reset if can */
if (ResultStream.CanSeek)
{
ResultStream.Seek(0, SeekOrigin.Begin);
}
}
private void Start(int retryCount, Stream content = null)
{
_progressing = true;
_progressWaitHandle.Reset();
int retry = 0;
Task.Run(async() =>
{
HttpRequestQueue.Current.Register(this);
_queueWaitHandle.WaitOne();
RETRY: //重试标签
if (State == HttpRequestState.NothingSpecial)
{
EventArgs <HttpRequestStats> progressInfo = null;
if (TransferProgressChanged != null)
{
progressInfo = new EventArgs <HttpRequestStats>(new HttpRequestStats());
}
try
{
State = HttpRequestState.Connecting;
if (TransferProgressChanged != null)
{
progressInfo.Value.Update();
TransferProgressChanged(this, progressInfo);
}
//数据上传过程，用于 Put 与 Post
if (content != null && (Request.Method == "PUT" || Request.Method == "POST"))
{
using (var requestStream = await Request.GetRequestStreamAsync())
{
State = HttpRequestState.Progressing;
if (TransferProgressChanged != null)
{
progressInfo.Value.ProgressType = HttpRequestProgressType.Upload;
progressInfo.Value.Update();
progressInfo.Value.TotalBytes = content.Length;
TransferProgressChanged(this, progressInfo);
byte[] buffer = new byte[TransferBufferSize];
int writeLength;
while ((writeLength = content.Read(buffer, 0, buffer.Length)) != 0)
{
requestStream.Write(buffer, 0, writeLength);
progressInfo.Value.Update(writeLength);
TransferProgressChanged(this, progressInfo);
}
progressInfo = new EventArgs <HttpRequestStats>(new HttpRequestStats());
}
else
{
content.CopyTo(requestStream);
}
}
}
//数据下载过程，用于 Post 与 Get
if (Request.Method == "GET" || Request.Method == "POST")
{
Response = (HttpWebResponse)await Request.GetResponseAsync();
State = HttpRequestState.Progressing;
#region 载过程
using (var stream = Response.GetResponseStream())
{
State = HttpRequestState.Progressing;
if (_customStream == null)
{
ResultStream =
new MemoryStream((int)(Response.ContentLength > 0
? Response.ContentLength
: 10 * TransferBufferSize));
}
if (TransferProgressChanged != null)
{
progressInfo.Value.ProgressType = HttpRequestProgressType.Download;
progressInfo.Value.TotalBytes = Response.ContentLength > 0
? Response.ContentLength
: 0;
byte[] buffer = new byte[TransferBufferSize];
long pos = 0;
int readLength;
if (ResultStream.CanSeek)
{
pos = ResultStream.Position;
}
while ((readLength = stream.Read(buffer, 0, buffer.Length)) != 0)
{
ResultStream.Write(buffer, 0, readLength);
progressInfo.Value.Update(readLength);
TransferProgressChanged(this, progressInfo);
}
if (ResultStream.CanSeek)
{
ResultStream.Position = pos;
}
}
else
{
long pos = 0;
if (ResultStream.CanSeek)
{
pos = ResultStream.Position;
}
stream.CopyTo(ResultStream);
if (ResultStream.CanSeek)
{
ResultStream.Position = pos;
}
}
}
#endregion 载过程
}
State = HttpRequestState.Completed;
if (TransferProgressChanged != null)
{
progressInfo.Value.Update();
TransferProgressChanged(this, progressInfo);
}
_progressWaitHandle.Set();
_progressing = false;
return;
}
catch (WebException webException)
{
Exception = webException;
State = HttpRequestState.ErrorOccurred;
if (TransferProgressChanged != null)
{
progressInfo.Value.Update();
TransferProgressChanged(this, progressInfo);
}
}
catch (Exception ex)
{
Exception = ex;
_progressWaitHandle.Set();
_progressing = false;
throw;
}
}
if (retry < retryCount)
{
retry++;
RebuildRequest(); //重构请求
goto RETRY; //重试请求
}
//取消等待
_progressWaitHandle.Set();
_progressing = false;
});
}