private static IEnumerator <int> CopyStream(AsyncEnumerator ae, Stream readStream, Stream writeStream)
{
byte[][] buffer = new byte[][]
{
new byte[8192],
new byte[8192]
};
int bytesRead = 0;
int currentBuffer = 0;
ae.AddAsync <IAsyncResult>(readStream.BeginRead(buffer[currentBuffer], 0, buffer[0].Length, ae.GetAsyncCallback(), null));
yield return(1);
for (bytesRead = readStream.EndRead(ae.CompletedAsyncResults[0]); bytesRead > 0; bytesRead = readStream.EndRead(ae.CompletedAsyncResults[1]))
{
ae.AddAsync <IAsyncResult>(writeStream.BeginWrite(buffer[currentBuffer % 2], 0, bytesRead, ae.GetAsyncCallback(), null));
currentBuffer++;
ae.AddAsync <IAsyncResult>(readStream.BeginRead(buffer[currentBuffer % 2], 0, buffer[currentBuffer % 2].Length, ae.GetAsyncCallback(), null));
yield return(2);
writeStream.EndWrite(ae.CompletedAsyncResults[0]);
}
ae.End();
yield break;
}
private IEnumerator <int> ProcessProxyRequest(AsyncEnumerator ae)
{
ExTraceGlobals.ProxyCallTracer.TraceDebug((long)this.GetHashCode(), "ProxyEventHandler.SendProxyRequest");
base.DontWriteHeaders = true;
int newContentLength = 0;
byte[] soapHeaderStuff = this.GetRequestSoapHeader(out newContentLength);
HttpWebRequest webRequest = this.GetProxyRequest(newContentLength);
WindowsImpersonationContext context = NetworkServiceImpersonator.Impersonate();
try
{
ae.AddAsync <IAsyncResult>(webRequest.BeginGetRequestStream(ae.GetAsyncCallback(), null));
}
catch
{
context.Undo();
context = null;
throw;
}
finally
{
if (context != null)
{
context.Undo();
context = null;
}
}
yield return(1);
Stream outStream = this.DoWebAction <Stream>(() => webRequest.EndGetRequestStream(ae.CompletedAsyncResults[0]));
if (outStream == null)
{
ae.End();
}
else
{
using (outStream)
{
ae.AddAsync <IAsyncResult>(outStream.BeginWrite(soapHeaderStuff, 0, soapHeaderStuff.Length, ae.GetAsyncCallback(), null));
yield return(1);
outStream.EndWrite(ae.CompletedAsyncResults[0]);
AsyncResult asyncResult = ae.AddAsyncEnumerator((AsyncEnumerator ae1) => ProxyToEwsEventHandler.CopyStream(ae1, this.HttpContext.Request.InputStream, outStream));
yield return(1);
asyncResult.End();
}
ae.AddAsync <IAsyncResult>(webRequest.BeginGetResponse(ae.GetAsyncCallback(), null));
yield return(1);
HttpWebResponse webResponse = this.DoWebAction <HttpWebResponse>(() => (HttpWebResponse)webRequest.EndGetResponse(ae.CompletedAsyncResults[0]));
if (webResponse != null)
{
using (webResponse)
{
ae.AddAsyncEnumerator((AsyncEnumerator ae1) => this.ProcessWebResponse(ae1, webResponse));
yield return(1);
}
}
ae.End();
}
yield break;
}
