private static IEnumerator<Int32> PipeServerAsyncEnumerator(AsyncEnumerator ae) {
// Each server object performs asynchronous operation on this pipe
using (var pipe = new NamedPipeServerStream(
"Echo", PipeDirection.InOut, -1, PipeTransmissionMode.Message,
PipeOptions.Asynchronous | PipeOptions.WriteThrough)) {
// Asynchronously accept a client connection
pipe.BeginWaitForConnection(ae.End(), null);
yield return 1;
// A client connected, let's accept another client
var aeNewClient = new AsyncEnumerator();
aeNewClient.BeginExecute(PipeServerAsyncEnumerator(aeNewClient),
aeNewClient.EndExecute);
// Accept the client connection
pipe.EndWaitForConnection(ae.DequeueAsyncResult());
// Asynchronously read a request from the client
Byte[] data = new Byte[1000];
pipe.BeginRead(data, 0, data.Length, ae.End(), null);
yield return 1;
// The client sent us a request, process it
Int32 bytesRead = pipe.EndRead(ae.DequeueAsyncResult());
// Just change to upper case
data = Encoding.UTF8.GetBytes(
Encoding.UTF8.GetString(data, 0, bytesRead).ToUpper().ToCharArray());
// Asynchronously send the response back to the client
pipe.BeginWrite(data, 0, data.Length, ae.End(), null);
yield return 1;
// The response was sent to the client, close our side of the connection
pipe.EndWrite(ae.DequeueAsyncResult());
} // Close happens in a finally block now!
}
private static IEnumerator<Int32> ProcessAllAndEachOps(AsyncEnumerator ae, String[] urls)
{
Int32 numOps = urls.Length;
// Issue all the asynchronous operation(s) so they run concurrently
for (Int32 n = 0; n < numOps; n++) {
WebRequest wr = WebRequest.Create(urls[n]);
wr.BeginGetResponse(ae.End(), wr);
}
// Have AsyncEnumerator wait until ALL operations complete
yield return numOps;
Console.WriteLine("All the operations completed:");
for (Int32 n = 0; n < numOps; n++) {
ProcessCompletedWebRequest(ae.DequeueAsyncResult());
}
Console.WriteLine(); // *** Blank line between demos ***
System.Diagnostics.Debugger.Break();
// Issue all the asynchronous operation(s) so they run concurrently
for (Int32 n = 0; n < numOps; n++) {
WebRequest wr = WebRequest.Create(urls[n]);
wr.BeginGetResponse(ae.End(), wr);
}
for (Int32 n = 0; n < numOps; n++) {
// Have AsyncEnumerator wait until EACH operation completes
yield return 1;
Console.WriteLine("An operation completed:");
ProcessCompletedWebRequest(ae.DequeueAsyncResult());
}
}
private IEnumerator <Int32> GetImagesFromGoogle(AsyncEnumerator ae, string searchUrl, Int32 imageNumber)
{
InitiateWebRequest(ae, searchUrl);
yield return(1);
String resultPage;
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
resultPage = GetSearchResutlPage(response);
}
IEnumerable <String> imageURIs = GetImageURIFromResultPage(resultPage);
int currentURI = 0;
Int32 _downloaded = 0;
while (_downloaded < imageNumber && currentURI < imageURIs.Count())
{
InitiateWebRequest(ae, imageURIs.ElementAt(currentURI++));
yield return(1);
try
{
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
_GoogledImages.Add(GetImageFromResponse(response));
_downloaded++;
}
}
catch (Exception e)
{
}
}
yield break;
}
private static IEnumerator <Int32> PipeClientAsyncEnumerator(AsyncEnumerator ae, String serverName, String message)
{
// Each client object performs asynchronous operations on this pipe
using (var pipe = new NamedPipeClientStream(serverName, "Echo",
PipeDirection.InOut, PipeOptions.Asynchronous | PipeOptions.WriteThrough)) {
pipe.Connect(); // Must Connect before setting ReadMode
pipe.ReadMode = PipeTransmissionMode.Message;
// Asynchronously send data to the server
Byte[] output = Encoding.UTF8.GetBytes(message);
pipe.BeginWrite(output, 0, output.Length, ae.End(), null);
yield return(1);
// The data was sent to the server
pipe.EndWrite(ae.DequeueAsyncResult());
// Asynchronously read the server's response
Byte[] data = new Byte[1000];
pipe.BeginRead(data, 0, data.Length, ae.End(), data);
yield return(1);
// The server responded, display the response and close out connection
Int32 bytesRead = pipe.EndRead(ae.DequeueAsyncResult());
Console.WriteLine("Server response: " + Encoding.UTF8.GetString(data, 0, bytesRead));
} // Close();
}
private static IEnumerator <Int32> CopyStream(AsyncEnumerator <Int64> ae, Stream source, Stream destination, Int32 bufferSize, Action <Int64> reportProgress)
{
Byte[] buffer = new Byte[bufferSize];
Int64 totalBytesRead = 0;
while (true)
{
ae.SetOperationTag("Reading from source stream");
// Read whichever is smaller (number of bytes left to read OR the buffer size)
source.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return(1);
Int32 bytesReadThisTime = source.EndRead(ae.DequeueAsyncResult());
totalBytesRead += bytesReadThisTime;
ae.SetOperationTag("Writing to destination stream");
destination.BeginWrite(buffer, 0, bytesReadThisTime, ae.End(), null);
yield return(1);
destination.EndWrite(ae.DequeueAsyncResult());
if (reportProgress != null)
{
reportProgress(totalBytesRead);
}
if (bytesReadThisTime < buffer.Length)
{
break;
}
}
ae.Result = totalBytesRead;
}
private static IEnumerator <int> GenerateTransferTask(
AsyncEnumerator ae, HttpContext context, string url)
{
WebRequest request = WebRequest.Create(url);
request.BeginGetResponse(ae.End(), null);
yield return(1);
using (WebResponse response = request.EndGetResponse(ae.DequeueAsyncResult()))
{
Stream streamIn = response.GetResponseStream();
Stream streamOut = context.Response.OutputStream;
byte[] buffer = new byte[1024];
while (true)
{
streamIn.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return(1);
int lengthRead = streamIn.EndRead(ae.DequeueAsyncResult());
if (lengthRead <= 0)
{
break;
}
streamOut.BeginWrite(buffer, 0, lengthRead, ae.End(), null);
yield return(1);
streamOut.EndWrite(ae.DequeueAsyncResult());
}
}
}
public IEnumerator<int> Login(SerializedObject request, string loginID, string password, string version, int appType, AsyncEnumerator ae)
{
long session = request.Session;
string connectionString = SettingManager.Default.ConnectionString;
IsFailedCountExceed(loginID, password, connectionString);
LoginParameter loginParameter = new LoginParameter();
loginParameter.CompanyName = string.Empty;
if (loginID == String.Empty)
{
AuditHelper.AddIllegalLogin(AppType.TradingConsole, loginID, password, this.GetLocalIP());
Application.Default.TradingConsoleServer.SaveLoginFail(loginID, password, GetLocalIP());
SendErrorResult(request);
yield break;
}
string message = string.Empty;
Application.Default.ParticipantService.BeginLogin(loginID, password, ae.End(), null);
yield return 1;
loginParameter.UserID = Application.Default.ParticipantService.EndLogin(ae.DequeueAsyncResult());
if (loginParameter.UserID == Guid.Empty)
{
_Logger.ErrorFormat("{0} is not a valid user", loginID);
}
else
{
Guid programID = new Guid(SettingManager.Default.GetLoginSetting("TradingConsole"));
Guid permissionID = new Guid(SettingManager.Default.GetLoginSetting("Run"));
Application.Default.SecurityService.BeginCheckPermission(loginParameter.UserID, programID, permissionID, "", "", loginParameter.UserID, ae.End(), null);
yield return 1;
bool isAuthrized = Application.Default.SecurityService.EndCheckPermission(ae.DequeueAsyncResult(), out message);
if (!isAuthrized)
{
_Logger.ErrorFormat("{0} doesn't have the right to login trader", loginID);
loginParameter.UserID = Guid.Empty;
}
else
{
Token token = new Token(Guid.Empty, UserType.Customer, (AppType)appType);
token.UserID = loginParameter.UserID;
token.SessionID = session.ToString();
SessionManager.Default.AddToken(session, token);
Application.Default.StateServer.BeginLogin(token, ae.End(), null);
yield return 1;
bool isStateServerLogined = Application.Default.StateServer.EndLogin(ae.DequeueAsyncResult());
SetLoginParameter(loginParameter, session, password, version, appType, isStateServerLogined, token);
}
}
if (loginParameter.UserID == Guid.Empty)
{
AuditHelper.AddIllegalLogin(AppType.TradingConsole, loginID, password, this.GetLocalIP());
Application.Default.TradingConsoleServer.SaveLoginFail(loginID, password, GetLocalIP());
SendErrorResult(request);
}
else
{
SetResult(request, loginParameter, session, loginID, password, version, appType, connectionString);
}
}
private static IEnumerator <Int32> PipeServerAsyncEnumerator(AsyncEnumerator ae)
{
// Each server object performs asynchronous operations on this pipe
using (var pipe = new NamedPipeServerStream(
"Echo", PipeDirection.InOut, -1, PipeTransmissionMode.Message,
PipeOptions.Asynchronous | PipeOptions.WriteThrough)) {
// Asynchronously accept a client connection
pipe.BeginWaitForConnection(ae.End(), null);
yield return(1);
// A client connected, let's accept another client
var aeNewClient = new AsyncEnumerator();
aeNewClient.BeginExecute(PipeServerAsyncEnumerator(aeNewClient), aeNewClient.EndExecute);
// Accept the client connection
pipe.EndWaitForConnection(ae.DequeueAsyncResult());
// Asynchronously read a request from the client
Byte[] data = new Byte[1000];
pipe.BeginRead(data, 0, data.Length, ae.End(), null);
yield return(1);
// The client sent us a request, process it.
Int32 bytesRead = pipe.EndRead(ae.DequeueAsyncResult());
// Get the timestamp of this client's request
DateTime now = DateTime.Now;
// We want to save the timestamp of the most-recent client request. Since multiple
// clients are running concurrently, this has to be done in a thread-safe way
s_gate.BeginRegion(SyncGateMode.Exclusive, ae.End()); // Request exclusive access
yield return(1); // The iterator resumes when exclusive access is granted
if (s_lastClientRequestTimestamp < now)
{
s_lastClientRequestTimestamp = now;
}
s_gate.EndRegion(ae.DequeueAsyncResult()); // Relinquish exclusive access
// My sample server just changes all the characters to uppercase
// But, you can replace this code with any compute-bound operation
data = Encoding.UTF8.GetBytes(
Encoding.UTF8.GetString(data, 0, bytesRead).ToUpper().ToCharArray());
// Asynchronously send the response back to the client
pipe.BeginWrite(data, 0, data.Length, ae.End(), null);
yield return(1);
// The response was sent to the client, close our side of the connection
pipe.EndWrite(ae.DequeueAsyncResult());
} // Close the pipe
}
private static IEnumerator <int> GetAsyncEnumerator(
AsyncEnumerator ae,
string urlIn,
string urlOut,
Action <double> onProgress,
Action <int> onComplete)
{
onProgress(0);
var requestIn = WebRequest.Create(urlIn);
requestIn.BeginGetResponse(ae.End(), null);
yield return(1);
using (var responseIn = requestIn.EndGetResponse(ae.DequeueAsyncResult()))
{
var streamIn = responseIn.GetResponseStream();
var requestOut = WebRequest.Create(urlOut);
requestOut.Method = "POST";
var totalLength = (int)responseIn.ContentLength;
requestOut.BeginGetRequestStream(ae.End(), null);
yield return(1);
using (var streamOut = requestOut.EndGetRequestStream(ae.DequeueAsyncResult()))
{
var totalRead = 0;
var buffer = new byte[10240];
while (totalRead < totalLength)
{
streamIn.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return(1);
var lengthRead = streamIn.EndRead(ae.DequeueAsyncResult());
streamOut.BeginWrite(buffer, 0, lengthRead, ae.End(), null);
yield return(1);
streamOut.EndWrite(ae.DequeueAsyncResult());
totalRead += lengthRead;
onProgress(100.0 * totalRead / totalLength);
}
}
onComplete(totalLength);
}
}
private IEnumerator<Int32> DownloadString(AsyncEnumerator ae, String uri)
{
var request = WebRequest.Create(uri);
request.BeginGetResponse(ae.End(), null);
yield return 1;
var response = (WebResponse) request.EndGetResponse(ae.DequeueAsyncResult());
Byte[] buffer = new Byte[response.ContentLength];
using (var stream = response.GetResponseStream()) {
stream.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return 1;
stream.EndRead(ae.DequeueAsyncResult());
}
m_textBox.Text = Encoding.UTF8.GetString(buffer, 0, buffer.Length);
}
private static IEnumerator<int> GetAsyncEnumerator(
AsyncEnumerator ae,
string urlIn,
string urlOut,
Action<double> onProgress,
Action<int> onComplete)
{
onProgress(0);
var requestIn = WebRequest.Create(urlIn);
requestIn.BeginGetResponse(ae.End(), null);
yield return 1;
using (var responseIn = requestIn.EndGetResponse(ae.DequeueAsyncResult()))
{
var streamIn = responseIn.GetResponseStream();
var requestOut = WebRequest.Create(urlOut);
requestOut.Method = "POST";
var totalLength = (int)responseIn.ContentLength;
requestOut.BeginGetRequestStream(ae.End(), null);
yield return 1;
using (var streamOut = requestOut.EndGetRequestStream(ae.DequeueAsyncResult()))
{
var totalRead = 0;
var buffer = new byte[10240];
while (totalRead < totalLength)
{
streamIn.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return 1;
var lengthRead = streamIn.EndRead(ae.DequeueAsyncResult());
streamOut.BeginWrite(buffer, 0, lengthRead, ae.End(), null);
yield return 1;
streamOut.EndWrite(ae.DequeueAsyncResult());
totalRead += lengthRead;
onProgress(100.0 * totalRead / totalLength);
}
}
onComplete(totalLength);
}
}
private static IEnumerator <Int32> FetchStockQuotesAsyncEnumerator(AsyncEnumerator ae, WebService svc)
{
svc.BeginFetchStockQuotes(ae.End(), null);
yield return(1);
IStockQuote qt = svc.EndFetchStockQuotes(ae.DequeueAsyncResult());
}
public static IEnumerator<int> GetInitData(SerializedObject request, DataSet initData, AsyncEnumerator ae)
{
XElement result = null;
long session = request.Session;
Token token = SessionManager.Default.GetToken(session);
if (initData == null)
{
Application.Default.StateServer.BeginGetInitData(token, null, ae.End(), null);
yield return 1;
int sequence;
initData = Application.Default.StateServer.EndGetInitData(ae.DequeueAsyncResult(), out sequence);
}
try
{
var data = Init(session, initData);
int commandSequence = data.Item2;
DataSet ds = data.Item1;
var dict = new Dictionary<string, string>()
{
{"commandSequence",commandSequence.ToString()},
{"data",ds.ToXml()}
};
result = XmlResultHelper.NewResult(dict);
request.Content = result;
SendCenter.Default.Send(request);
}
catch (Exception ex)
{
request.Content = XmlResultHelper.NewErrorResult(ex.ToString());
SendCenter.Default.Send(request);
}
}
static IEnumerator <int> ListenerFiber(AsyncEnumerator ae)
{
var listeningServer = new TcpListener(IPAddress.Loopback, 9998);
listeningServer.Start();
while (!ae.IsCanceled())
{
listeningServer.BeginAcceptTcpClient(ae.End(0, listeningServer.EndAcceptTcpClient), null);
yield return(1);
if (ae.IsCanceled())
{
yield break;
}
var clientSocket = listeningServer.EndAcceptTcpClient(ae.DequeueAsyncResult());
var clientAe = new AsyncEnumerator()
{
SyncContext = null
};
clientAe.BeginExecute(
ClientFiber(clientAe, clientSocket),
ar =>
{
try
{
clientAe.EndExecute(ar);
}
catch { }
}, null);
}
}
public static IEnumerator <int> ReadBytes(
byte[] buffer, Stream stream, AsyncEnumerator ae, string type, bool expectedToHaveNoData)
{
var totalBytesRead = 0;
while (totalBytesRead < buffer.Length)
{
stream.BeginRead(buffer, totalBytesRead, buffer.Length - totalBytesRead, ae.End(), null);
yield return(1);
int bytesRead = stream.EndRead(ae.DequeueAsyncResult());
if (bytesRead == 0)
{
if (expectedToHaveNoData)
{
yield break;
}
throw new InvalidOperationException("Could not read value for " + type);
}
totalBytesRead += bytesRead;
}
}
private IEnumerator<Int32> GetImagesFromGoogle(AsyncEnumerator ae,string searchUrl,Int32 imageNumber)
{
InitiateWebRequest(ae,searchUrl);
yield return 1;
String resultPage;
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
resultPage = GetSearchResutlPage(response);
}
IEnumerable<String> imageURIs = GetImageURIFromResultPage(resultPage) ;
int currentURI=0;
Int32 _downloaded=0;
while (_downloaded < imageNumber && currentURI < imageURIs.Count())
{
InitiateWebRequest(ae, imageURIs.ElementAt(currentURI++));
yield return 1;
try
{
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
_GoogledImages.Add(GetImageFromResponse(response));
_downloaded++;
}
}
catch (Exception e)
{
}
}
yield break;
}
private IEnumerator <Int32> UploadBlock(AsyncEnumerator ae, MemoryMappedFile mmf, CloudBlockBlob blob, Int32 blockNumber, Int64 length)
{
using (var stream = mmf.CreateViewStream(blockNumber * m_blockSize, length, MemoryMappedFileAccess.Read)) {
blob.BeginPutBlock(blockNumber.ToBase64(), stream, null, ae.End(), null);
yield return(1);
blob.EndPutBlock(ae.DequeueAsyncResult());
}
}
private IEnumerator <int> ProcessUpdateLookups(AsyncEnumerator asyncEnumerator, QuotePage[] pages)
{
QuotePage page;
for (int i = 0; i < pages.Length; i++)
{
page = pages[i];
LookupResolver.BeginNormalizeTopicOmitChecks(page.Topic, page.Culture,
asyncEnumerator.End(AsyncEnumeratorDiscardGroup, LookupResolver.EndNormalizeTopic), page);
}
IAsyncResult result;
bool updateQuotes = false;
for (int i = 0; i < pages.Length; i++)
{
yield return(1);
if (asyncEnumerator.IsCanceled())
{
yield break;
}
result = asyncEnumerator.DequeueAsyncResult();
page = result.AsyncState as QuotePage;
try
{
page.Topic = LookupResolver.EndNormalizeTopic(result);
page.Uri = LookupResolver.GetUri(page.Topic, page.Culture);
}
catch
{
OnTopicNotFound(new TopicNotFoundEventArgs(page.Topic, page.Culture));
yield break;
}
lock (_lookupsInProgress)
{
if (!_lookupsInProgress.Contains(page.Uri))
{
_lookupsInProgress.Add(page.Uri);
updateQuotes = true;
}
}
if (updateQuotes)
{
QuoteCollector.UpdateQuotesAsync(page);
}
}
lock (_asyncEnumerators)
{
_asyncEnumerators.Remove(asyncEnumerator);
}
}
private IEnumerator <Int32> GetImagesFromGoogle(AsyncEnumerator ae, string searchUrl, Int32 imageNumber)
{
InitiateWebRequest(ae, searchUrl);
yield return(1);
String resultPage;
_GoogledImages = new List <Image>();
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
resultPage = GetSearchResutlPage(response);
}
IEnumerable <String> imageURIs = GetImageURIFromResultPage(resultPage);
int currentURI = 0;
Int32 _downloaded = 0;
// while (_downloaded < imageNumber && currentURI < imageURIs.Count())
int i = 0;
while (i < 4)
{
InitiateWebRequest(ae, imageURIs.ElementAt(currentURI++));
yield return(1);
try
{
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
curImage = GetImageFromResponse(response);
_GoogledImages.Add(curImage);
_downloaded++;
}
}
catch (Exception e)
{
Console.WriteLine("caught Webresponse exception" + e);
}
i++;
}
yield break;
}
private IEnumerator <int> ProcessLookup(AsyncEnumerator asyncEnumerator, string topic, CultureInfo culture)
{
LookupResolver.BeginNormalizeTopicOmitChecks(topic, culture,
asyncEnumerator.End(AsyncEnumeratorDiscardGroup, LookupResolver.EndNormalizeTopic), null);
yield return(1);
if (asyncEnumerator.IsCanceled())
{
yield break;
}
try
{
topic = LookupResolver.EndNormalizeTopic(asyncEnumerator.DequeueAsyncResult());
}
catch
{
OnTopicNotFound(new TopicNotFoundEventArgs(topic, culture));
yield break;
}
Uri uri = LookupResolver.GetUri(topic, culture);
bool collectQuotes = false;
lock (_playlist)
{
if (_playlist.Contains(uri))
{
OnTopicAlreadyExists(new TopicAlreadyExistsEventArgs(topic, culture));
yield break;
}
}
lock (_lookupsInProgress)
{
if (!_lookupsInProgress.Contains(uri))
{
_lookupsInProgress.Add(uri);
collectQuotes = true;
}
}
if (collectQuotes)
{
QuoteCollector.CollectQuotesAsync(topic, culture, uri);
}
lock (_asyncEnumerators)
{
_asyncEnumerators.Remove(asyncEnumerator);
}
}
private static IEnumerator<Int32> CopyStream(AsyncEnumerator<Int64> ae, Stream source, Stream destination, Int32 bufferSize, Action<Int64> reportProgress) {
Byte[] buffer = new Byte[bufferSize];
Int64 totalBytesRead = 0;
while (true) {
ae.SetOperationTag("Reading from source stream");
// Read whichever is smaller (number of bytes left to read OR the buffer size)
source.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return 1;
Int32 bytesReadThisTime = source.EndRead(ae.DequeueAsyncResult());
totalBytesRead += bytesReadThisTime;
ae.SetOperationTag("Writing to destination stream");
destination.BeginWrite(buffer, 0, bytesReadThisTime, ae.End(), null);
yield return 1;
destination.EndWrite(ae.DequeueAsyncResult());
if (reportProgress != null) reportProgress(totalBytesRead);
if (bytesReadThisTime < buffer.Length) break;
}
ae.Result = totalBytesRead;
}
private IEnumerator<Int32> GetImages(AsyncEnumerator ae)
{
ae.ThrowOnMissingDiscardGroup(true);
// Request all the images asynchronously
WebRequest[] requests = new WebRequest[]
{
WebRequest.Create(_imageUris[0]),
WebRequest.Create(m_chkSimFailure.Checked ? _imageUris[2] : _imageUris[1])
};
for(Int32 n = 0; n < requests.Length; n++)
requests[n].BeginGetResponse(
ae.EndVoid(0, asyncResult => { requests[(Int32) asyncResult.AsyncState].EndGetResponse(asyncResult).Close(); }), n);
// Set timeout if specified.
Int32 timeout;
if(Int32.TryParse(m_txtServerTime.Text, out timeout))
ae.SetCancelTimeout(timeout, null);
// WaitAsync for all operations to complete (or timeout)
yield return requests.Length;
if(ae.IsCanceled())
{
m_lblPic1.Text = "Server couldn't process the request in the specified time.";
yield break;
}
for(Int32 n = 0; n < requests.Length; n++)
{
IAsyncResult result = ae.DequeueAsyncResult();
Int32 reqNum = (Int32) result.AsyncState;
Label lbl = (reqNum == 0) ? m_lblPic1 : m_lblPic2;
WebRequest request = requests[reqNum];
WebResponse response = null;
try
{
response = request.EndGetResponse(result);
lbl.Text = String.Format("Image at {0} is {1:N0} bytes",
response.ResponseUri, response.ContentLength);
}
catch(WebException e)
{
lbl.Text = String.Format("Error obtaining image at {0}: {1}",
request.RequestUri, e.Message);
}
finally
{
if(response != null) response.Close();
}
}
}
private IEnumerator <int> GetPostEnumerator(
Uri uri, AsyncEnumerator ae, Action <JsonRpcResponse, Exception> resultCallback)
{
var webReq = (HttpWebRequest)WebRequest.Create(uri);
webReq.Method = "POST";
webReq.ContentType = "text/json";
webReq.BeginGetRequestStream(ae.End(), null);
yield return(1);
var reqStream = webReq.EndGetRequestStream(ae.DequeueAsyncResult());
using (var sw = new StreamWriter(reqStream, Encoding.UTF8))
{
var json = JsonConvert.SerializeObject(this, Formatting.None);
sw.Write(json);
sw.Flush();
}
webReq.BeginGetResponse(ae.End(), null);
yield return(1);
try
{
using (var webRep = webReq.EndGetResponse(ae.DequeueAsyncResult()))
using (var repStream = webRep.GetResponseStream())
{
var jsonRep = JsonRpcResponse.Deserialize(repStream);
resultCallback(jsonRep, null);
}
}
catch (Exception ex)
{
resultCallback(null, ex);
yield break;
}
}
public static IEnumerator<int> GetInitData(SerializedInfo request,AsyncEnumerator ae)
{
Session session = request.ClientInfo.Session;
Token token = SessionManager.Default.GetToken(session);
Application.Default.StateServer.BeginGetInitData(token, null, ae.End(), null);
yield return 1;
try
{
int sequence;
DataSet initData = Application.Default.StateServer.EndGetInitData(ae.DequeueAsyncResult(), out sequence);
InitAndSendInitDataInPointer(request,initData);
}
catch (Exception ex)
{
SendErrorResult(request, ex);
}
}
public IEnumerator<int> AsyncGetInitData(Token token,AsyncEnumerator ae)
{
Token currentToken = new Token(token.UserID, token.UserType, AppType.TradingConsole);
Application.Default.StateServer.BeginGetInitData(currentToken, null, ae.End(), null);
yield return 1;
try
{
int commandSequence;
DataSet initData = Application.Default.StateServer.EndGetInitData(ae.DequeueAsyncResult(), out commandSequence);
OnLoadInitDataCompleted(initData);
}
catch (Exception ex)
{
_Logger.Error("async getInitData", ex);
OnLoadInitDataCompleted(null);
yield break;
}
}
public static IEnumerator <int> GetInitData(SerializedInfo request, AsyncEnumerator ae)
{
Session session = request.ClientInfo.Session;
Token token = SessionManager.Default.GetToken(session);
Application.Default.StateServer.BeginGetInitData(token, null, ae.End(), null);
yield return(1);
try
{
int sequence;
DataSet initData = Application.Default.StateServer.EndGetInitData(ae.DequeueAsyncResult(), out sequence);
InitAndSendInitDataInPointer(request, initData);
}
catch (Exception ex)
{
SendErrorResult(request, ex);
}
}
public IEnumerator <int> AsyncGetInitData(Token token, AsyncEnumerator ae)
{
Token currentToken = new Token(token.UserID, token.UserType, AppType.TradingConsole);
Application.Default.StateServer.BeginGetInitData(currentToken, null, ae.End(), null);
yield return(1);
try
{
int commandSequence;
DataSet initData = Application.Default.StateServer.EndGetInitData(ae.DequeueAsyncResult(), out commandSequence);
OnLoadInitDataCompleted(initData);
}
catch (Exception ex)
{
_Logger.Error("async getInitData", ex);
OnLoadInitDataCompleted(null);
yield break;
}
}
private IEnumerator <Int32> ExecuteWithAsyncEnumerator(AsyncEnumerator ae)
{
for (Int32 n = 0; n < c_iterations; n++)
{
((WebService)m_webService).BeginGetStockQuotes(ae.End(), null);
}
// NOTE: AsyncEnumerator captures the calling thread's SynchronizationContext.
// Set the Wintellect.Threading.AsyncProgModel.SynchronizationContext type to
// null so that the callback continues on a ThreadPool thread.
ae.SyncContext = null;
yield return(c_iterations);
for (Int32 n = 0; n < c_iterations; n++)
{
((WebService)m_webService).EndGetStockQuotes(ae.DequeueAsyncResult());
}
// AsyncEnumerator captures the synchronization context.
SetStatus("AsyncEnumerator completed.", StatusState.Ready);
}
private IEnumerator<Int32> GetImagesFromGoogle(AsyncEnumerator ae,string searchUrl,Int32 imageNumber)
{
InitiateWebRequest(ae,searchUrl);
yield return 1;
String resultPage;
_GoogledImages = new List<Image>();
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
resultPage = GetSearchResutlPage(response);
}
IEnumerable<String> imageURIs = GetImageURIFromResultPage(resultPage) ;
int currentURI=0;
Int32 _downloaded=0;
// while (_downloaded < imageNumber && currentURI < imageURIs.Count())
int i=0;
while(i<4)
{
InitiateWebRequest(ae, imageURIs.ElementAt(currentURI++));
yield return 1;
try
{
using (WebResponse response = GetWebResponse(ae.DequeueAsyncResult()))
{
curImage=GetImageFromResponse(response);
_GoogledImages.Add(curImage);
_downloaded++;
}
}
catch (Exception e)
{
Console.WriteLine("caught Webresponse exception" + e);
}
i++;
}
yield break;
}
private IEnumerator <Int32> ExecuteWithAsyncEnumerator(AsyncEnumerator ae)
{
for (Int32 n = 0; n < c_iterations; n++)
{
Cargo cargo = CargoFactory.CreateNew("Glyfada" + n, "Perachora" + n);
App.Database.BeginSave <Cargo>(cargo, ae.End(), null);
}
// NOTE: AsyncEnumerator captures the calling thread's SynchronizationContext.
// Set the Wintellect.Threading.AsyncProgModel.SynchronizationContext type to
// null so that the callback continues on a ThreadPool thread.
ae.SyncContext = null;
yield return(c_iterations);
for (Int32 n = 0; n < c_iterations; n++)
{
App.Database.EndSave(ae.DequeueAsyncResult());
}
// AsyncEnumerator captures the synchronization context.
SetStatus("AsyncEnumerator completed.", StatusState.Ready);
}
public static IEnumerator<int> ReadBytes(
byte[] buffer, Stream stream, AsyncEnumerator ae, string type, bool expectedToHaveNoData)
{
var totalBytesRead = 0;
while (totalBytesRead < buffer.Length)
{
stream.BeginRead(buffer, totalBytesRead, buffer.Length - totalBytesRead, ae.End(), null);
yield return 1;
int bytesRead = stream.EndRead(ae.DequeueAsyncResult());
if(bytesRead == 0)
{
if (expectedToHaveNoData)
yield break;
throw new InvalidOperationException("Could not read value for " + type);
}
totalBytesRead += bytesRead;
}
}
static IEnumerator <int> ClientFiber(AsyncEnumerator ae, TcpClient clientSocket)
{
Console.WriteLine("ClientFibers ++{0}", Interlocked.Increment(ref clients));
try
{
// original code to do handshaking and connect to remote host
var ns1 = clientSocket.GetStream();
var r1 = new BinaryReader(ns1);
var w1 = new BinaryWriter(ns1);
if (!(r1.ReadByte() == 5 && r1.ReadByte() == 1))
{
yield break;
}
var c = r1.ReadByte();
for (int i = 0; i < c; ++i)
{
r1.ReadByte();
}
w1.Write((byte)5);
w1.Write((byte)0);
if (!(r1.ReadByte() == 5 && r1.ReadByte() == 1))
{
yield break;
}
if (r1.ReadByte() != 0)
{
yield break;
}
byte[] ipAddr = null;
string hostname = null;
var type = r1.ReadByte();
switch (type)
{
case 1:
ipAddr = r1.ReadBytes(4);
break;
case 3:
hostname = Encoding.ASCII.GetString(r1.ReadBytes(r1.ReadByte()));
break;
case 4:
throw new Exception();
}
var nhport = r1.ReadInt16();
var port = IPAddress.NetworkToHostOrder(nhport);
var socketout = new TcpClient();
if (hostname != null)
{
socketout.Connect(hostname, port);
}
else
{
socketout.Connect(new IPAddress(ipAddr), port);
}
w1.Write((byte)5);
w1.Write((byte)0);
w1.Write((byte)0);
w1.Write(type);
switch (type)
{
case 1:
w1.Write(ipAddr);
break;
case 3:
w1.Write((byte)hostname.Length);
w1.Write(Encoding.ASCII.GetBytes(hostname), 0, hostname.Length);
break;
}
w1.Write(nhport);
using (var ns2 = socketout.GetStream())
{
var forwardAe = new AsyncEnumerator()
{
SyncContext = null
};
forwardAe.BeginExecute(
ForwardingFiber(forwardAe, ns1, ns2), ae.EndVoid(0, forwardAe.EndExecute), null);
yield return(1);
if (ae.IsCanceled())
{
yield break;
}
forwardAe.EndExecute(ae.DequeueAsyncResult());
}
}
finally
{
Console.WriteLine("ClientFibers --{0}", Interlocked.Decrement(ref clients));
}
}
private IEnumerator <int> ProcessRequest(TcpClient client, AsyncEnumerator ae)
{
try
{
using (client)
using (var stream = client.GetStream())
{
var sender = client.Client.RemoteEndPoint;
var lenOfDataToReadBuffer = new byte[sizeof(int)];
var lenEnumerator = new AsyncEnumerator(ae.ToString());
try
{
lenEnumerator.BeginExecute(
StreamUtil.ReadBytes(lenOfDataToReadBuffer, stream, lenEnumerator, "length data", false), ae.End());
}
catch (Exception exception)
{
logger.Warn("Unable to read length data from " + sender, exception);
yield break;
}
yield return(1);
try
{
lenEnumerator.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to read length data from " + sender, exception);
yield break;
}
var lengthOfDataToRead = BitConverter.ToInt32(lenOfDataToReadBuffer, 0);
if (lengthOfDataToRead < 0)
{
logger.WarnFormat("Got invalid length {0} from sender {1}", lengthOfDataToRead, sender);
yield break;
}
logger.DebugFormat("Reading {0} bytes from {1}", lengthOfDataToRead, sender);
var buffer = new byte[lengthOfDataToRead];
var readBufferEnumerator = new AsyncEnumerator(ae.ToString());
try
{
readBufferEnumerator.BeginExecute(
StreamUtil.ReadBytes(buffer, stream, readBufferEnumerator, "message data", false), ae.End());
}
catch (Exception exception)
{
logger.Warn("Unable to read message data from " + sender, exception);
yield break;
}
yield return(1);
try
{
readBufferEnumerator.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to read message data from " + sender, exception);
yield break;
}
Message[] messages = null;
try
{
messages = SerializationExtensions.ToMessages(buffer);
logger.DebugFormat("Deserialized {0} messages from {1}", messages.Length, sender);
}
catch (Exception exception)
{
logger.Warn("Failed to deserialize messages from " + sender, exception);
}
if (messages == null)
{
try
{
stream.BeginWrite(ProtocolConstants.SerializationFailureBuffer, 0,
ProtocolConstants.SerializationFailureBuffer.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.Warn("Unable to send serialization format error to " + sender, exception);
yield break;
}
yield return(1);
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to send serialization format error to " + sender, exception);
}
yield break;
}
IMessageAcceptance acceptance = null;
byte[] errorBytes = null;
try
{
acceptance = acceptMessages(messages);
logger.DebugFormat("All messages from {0} were accepted", sender);
}
catch (QueueDoesNotExistsException)
{
logger.WarnFormat("Failed to accept messages from {0} because queue does not exists", sender);
errorBytes = ProtocolConstants.QueueDoesNoExiststBuffer;
}
catch (Exception exception)
{
errorBytes = ProtocolConstants.ProcessingFailureBuffer;
logger.Warn("Failed to accept messages from " + sender, exception);
}
if (errorBytes != null)
{
try
{
stream.BeginWrite(errorBytes, 0,
errorBytes.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.Warn("Unable to send processing failure from " + sender, exception);
yield break;
}
yield return(1);
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to send processing failure from " + sender, exception);
}
yield break;
}
logger.DebugFormat("Sending reciept notice to {0}", sender);
try
{
stream.BeginWrite(ProtocolConstants.RecievedBuffer, 0, ProtocolConstants.RecievedBuffer.Length,
ae.End(), null);
}
catch (Exception exception)
{
logger.Warn("Could not send reciept notice to " + sender, exception);
acceptance.Abort();
yield break;
}
yield return(1);
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Could not send reciept notice to " + sender, exception);
acceptance.Abort();
yield break;
}
logger.DebugFormat("Reading acknowledgement about accepting messages to {0}", sender);
var acknowledgementBuffer = new byte[ProtocolConstants.AcknowledgedBuffer.Length];
var readAcknoweldgement = new AsyncEnumerator(ae.ToString());
try
{
readAcknoweldgement.BeginExecute(
StreamUtil.ReadBytes(acknowledgementBuffer, stream, readAcknoweldgement, "acknowledgement", false),
ae.End());
}
catch (Exception exception)
{
logger.Warn("Error reading acknowledgement from " + sender, exception);
acceptance.Abort();
yield break;
}
yield return(1);
try
{
readAcknoweldgement.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Error reading acknowledgement from " + sender, exception);
acceptance.Abort();
yield break;
}
var senderResponse = Encoding.Unicode.GetString(acknowledgementBuffer);
if (senderResponse != ProtocolConstants.Acknowledged)
{
logger.WarnFormat("Sender did not respond with proper acknowledgement, the reply was {0}",
senderResponse);
acceptance.Abort();
}
bool commitSuccessful;
try
{
acceptance.Commit();
commitSuccessful = true;
}
catch (Exception exception)
{
logger.Warn("Unable to commit messages from " + sender, exception);
commitSuccessful = false;
}
if (commitSuccessful == false)
{
bool writeSuccessful;
try
{
stream.BeginWrite(ProtocolConstants.RevertBuffer, 0, ProtocolConstants.RevertBuffer.Length,
ae.End(),
null);
writeSuccessful = true;
}
catch (Exception e)
{
logger.Warn("Unable to send revert message to " + sender, e);
writeSuccessful = false;
}
if (writeSuccessful)
{
yield return(1);
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to send revert message to " + sender, exception);
}
}
}
}
}
finally
{
var copy = CompletedRecievingMessages;
if (copy != null)
{
copy();
}
}
}
private IEnumerator <int> SendInternal(AsyncEnumerator ae)
{
try
{
using (var client = new TcpClient())
{
try
{
client.BeginConnect(Destination.Host, Destination.Port,
ae.End(),
null);
}
catch (Exception exception)
{
logger.WarnFormat("Failed to connect to {0} because {1}", Destination, exception);
Failure(exception);
yield break;
}
yield return(1);
try
{
client.EndConnect(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Failed to connect to {0} because {1}", Destination, exception);
Failure(exception);
yield break;
}
logger.DebugFormat("Successfully connected to {0}", Destination);
using (var stream = client.GetStream())
{
var buffer = Messages.Serialize();
var bufferLenInBytes = BitConverter.GetBytes(buffer.Length);
logger.DebugFormat("Writing length of {0} bytes to {1}", buffer.Length, Destination);
try
{
stream.BeginWrite(bufferLenInBytes, 0, bufferLenInBytes.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
yield return(1);
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
logger.DebugFormat("Writing {0} bytes to {1}", buffer.Length, Destination);
try
{
stream.BeginWrite(buffer, 0, buffer.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
yield return(1);
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
logger.DebugFormat("Successfully wrote to {0}", Destination);
var recieveBuffer = new byte[ProtocolConstants.RecievedBuffer.Length];
var readConfirmationEnumerator = new AsyncEnumerator();
try
{
readConfirmationEnumerator.BeginExecute(
StreamUtil.ReadBytes(recieveBuffer, stream, readConfirmationEnumerator, "recieve confirmation", false), ae.End());
}
catch (Exception exception)
{
logger.WarnFormat("Could not read confirmation from {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
yield return(1);
try
{
readConfirmationEnumerator.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Could not read confirmation from {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
var recieveRespone = Encoding.Unicode.GetString(recieveBuffer);
if (recieveRespone == ProtocolConstants.QueueDoesNotExists)
{
logger.WarnFormat(
"Response from reciever {0} is that queue does not exists",
Destination);
Failure(new QueueDoesNotExistsException());
yield break;
}
else if (recieveRespone != ProtocolConstants.Recieved)
{
logger.WarnFormat(
"Response from reciever {0} is not the expected one, unexpected response was: {1}",
Destination, recieveRespone);
Failure(null);
yield break;
}
try
{
stream.BeginWrite(ProtocolConstants.AcknowledgedBuffer, 0,
ProtocolConstants.AcknowledgedBuffer.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.WarnFormat("Failed to write acknowledgement to reciever {0} because {1}",
Destination, exception);
Failure(exception);
yield break;
}
yield return(1);
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Failed to write acknowledgement to reciever {0} because {1}",
Destination, exception);
Failure(exception);
yield break;
}
var bookmarks = Success();
buffer = new byte[ProtocolConstants.RevertBuffer.Length];
var readRevertMessage = new AsyncEnumerator(ae.ToString());
bool startingToReadFailed = false;
try
{
readRevertMessage.BeginExecute(
StreamUtil.ReadBytes(buffer, stream, readRevertMessage, "revert", true), ae.End());
}
catch (Exception)
{
//more or less expected
startingToReadFailed = true;
}
if (startingToReadFailed)
{
yield break;
}
yield return(1);
try
{
readRevertMessage.EndExecute(ae.DequeueAsyncResult());
var revert = Encoding.Unicode.GetString(buffer);
if (revert == ProtocolConstants.Revert)
{
logger.Warn("Got back revert message from receiver, reverting send");
Revert(bookmarks);
}
}
catch (Exception)
{
// expected, there is nothing to do here, the
// reciever didn't report anything for us
}
}
}
}
finally
{
var completed = SendCompleted;
if (completed != null)
{
completed();
}
}
}
private IEnumerator<Int32> DownloadImages(AsyncEnumerator ae)
{
ae.ThrowOnMissingDiscardGroup(true);
GetImages.IsEnabled = false;
Cancel.IsEnabled = true;
WebRequest[] requests = new WebRequest[] {
WebRequest.Create(UriHelper.ConvertRelativeUriStringToAbsolute("Images/Wintellect.jpg")),
WebRequest.Create(UriHelper.ConvertRelativeUriStringToAbsolute("Images/JeffreyRichter.jpg")),
};
for (Int32 requestNum = 0; requestNum < requests.Length; requestNum++) {
requests[requestNum].BeginGetResponse(
ae.EndVoid(0, asyncResult => {
requests[requestNum].EndGetResponse(asyncResult).Close();
}), requestNum);
}
for (Int32 resultNum = 0; resultNum < requests.Length; resultNum++) {
yield return 1;
if (ae.IsCanceled()) break;
IAsyncResult asyncResult = ae.DequeueAsyncResult();
Int32 index = (Int32)asyncResult.AsyncState;
try {
using (WebResponse response = requests[index].EndGetResponse(asyncResult)) {
using (Stream stream = response.GetResponseStream()) {
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.SetSource(stream);
m_images[index].Source = bitmapImage;
}
}
}
catch (WebException e) {
m_textboxes[index].Text = "Failed: " + e.Message;
}
}
GetImages.IsEnabled = true;
Cancel.IsEnabled = false;
}
private static IEnumerator<int> GenerateTransferTask(
AsyncEnumerator ae, HttpContext context, string url)
{
WebRequest request = WebRequest.Create(url);
request.BeginGetResponse(ae.End(), null);
yield return 1;
using (WebResponse response = request.EndGetResponse(ae.DequeueAsyncResult()))
{
Stream streamIn = response.GetResponseStream();
Stream streamOut = context.Response.OutputStream;
byte[] buffer = new byte[1024];
while (true)
{
streamIn.BeginRead(buffer, 0, buffer.Length, ae.End(), null);
yield return 1;
int lengthRead = streamIn.EndRead(ae.DequeueAsyncResult());
if (lengthRead <= 0) break;
streamOut.BeginWrite(buffer, 0, lengthRead, ae.End(), null);
yield return 1;
streamOut.EndWrite(ae.DequeueAsyncResult());
}
}
}
private IEnumerator<Int32> GetPhotos(AsyncEnumerator ae, String input) {
WebRequest request = HttpWebRequest.Create(
new Uri(String.Format("http://api.flickr.com/services/rest/?method=flickr.photos.search&api_key={0}&tags={1}&per_page=10",
FlickrKey.Key, input)));
ae.SetOperationTag("Querying " + request.RequestUri);
request.BeginGetResponse(ae.End(), null);
yield return 1;
// Complete the Flickr request (this is guaranteed to run on the GUI thread)
String data;
using (HttpWebResponse response = (HttpWebResponse) request.EndGetResponse(ae.DequeueAsyncResult())) {
using (StreamReader reader = new StreamReader(response.GetResponseStream())) {
data = reader.ReadToEnd();
}
}
ae.SetOperationTag("Starting Storyboard");
EventApmFactory<EventArgs> eventArgsFactory = new EventApmFactory<EventArgs>();
EventHandler storyboardCompletedEventHandler = eventArgsFactory.PrepareOperation(ae.End()).EventHandler;
SearchPanelStoryBoard.Completed += storyboardCompletedEventHandler;
SearchPanelStoryBoard.Begin();
yield return 1;
SearchPanelStoryBoard.Completed -= storyboardCompletedEventHandler;
eventArgsFactory.EndInvoke(ae.DequeueAsyncResult());
PhotoBoard.Width = Application.Current.Host.Content.ActualWidth;
PhotoBoard.Height = Application.Current.Host.Content.ActualHeight - 100.0;
XDocument doc = XDocument.Parse(data);
var photos = from results in doc.Descendants("photo")
select new {
id = results.Attribute("id").Value.ToString(),
farm = results.Attribute("farm").Value.ToString(),
server = results.Attribute("server").Value.ToString(),
secret = results.Attribute("secret").Value.ToString()
};
PhotoBoard.Children.Clear();
Int32 count = 0;
EventApmFactory<OpenReadCompletedEventArgs> openReadCompletedEventArgsFactory = new EventApmFactory<OpenReadCompletedEventArgs>();
foreach (var photo in photos) {
// Create a photo
Border item = (Border) XamlReader.Load(String.Format(CultureInfo.InvariantCulture,
c_template, count,
(PhotoBoard.Width - c_cx) / 2, (PhotoBoard.Height - c_cy) / 2, // Initial position (center of workspace)
c_cx + c_border, c_cy + c_border, // Width and height of photo border
(c_cx + c_border) / 2, (c_cy + c_border) / 2, // Center of rotation
c_cx, c_cy)); // Width and height of photo
WebClient wc = new WebClient();
ae.SetOperationTag("Loading photo " + count);
wc.OpenReadCompleted += openReadCompletedEventArgsFactory.PrepareOperation(ae.End()).EventHandler;
wc.OpenReadAsync(
new Uri(String.Format("http://farm{0}.static.flickr.com/{1}/{2}_{3}_m.jpg", photo.farm, photo.server, photo.id, photo.secret),
UriKind.Absolute), item);
count++;
}
while (count-- > 0) {
yield return 1; // Process each image as it comes back
OnReadCompleted(null, openReadCompletedEventArgsFactory.EndInvoke(ae.DequeueAsyncResult()));
}
}
static IEnumerator<Int32> Server(AsyncEnumerator ae, ServerState server)
{
var sleeper = new CountdownTimer();
var settings = server.settings;
var ipe = new IPEndPoint(IPAddress.Parse(settings.addressforward), settings.portforward);
var serverSock = new TcpListener(IPAddress.Parse(settings.addresslisten), settings.portlisten);
serverSock.Start(20);
Console.WriteLine("Server started");
Console.WriteLine("Listening on {0}:{1}", settings.addresslisten, settings.portlisten);
Console.WriteLine("Forwarding to {0}:{1}", settings.addressforward, settings.portforward);
while (true)
{
serverSock.BeginAcceptTcpClient(ae.End(), null);
yield return 1;
TcpClient local = null;
try
{
local = serverSock.EndAcceptTcpClient(ae.DequeueAsyncResult());
local.NoDelay = true;
local.LingerState.Enabled = false;
}
catch (SocketException)
{
Console.WriteLine("A client failed to connect");
}
if(local != null)
{
// handle client
var localAe = new AsyncEnumerator();
localAe.BeginExecute(ServerConnectRemote(localAe, server, ipe, local), localAe.EndExecute, localAe);
}
}
}
private static IEnumerator<Int32> Process(AsyncEnumerator ae, TcpListener server)
{
server.BeginAcceptTcpClient(ae.End(), null);
yield return 1;
using (TcpClient client = server.EndAcceptTcpClient(ae.DequeueAsyncResult())) {
Start(server); // Accept another client
using (Stream stream = client.GetStream()) {
// Read 1 byte from client which contains length of additional data
Byte[] inputData = new Byte[1];
stream.BeginRead(inputData, 0, 1, ae.End(), null);
yield return 1;
// Client closed connection; abandon this client request
if (stream.EndRead(ae.DequeueAsyncResult()) == 0) yield break;
// Start to read 'length' bytes of data from client
Int32 dataLength = inputData[0];
Array.Resize(ref inputData, 1 + dataLength);
for (Byte bytesReadSoFar = 0; bytesReadSoFar < dataLength; ) {
stream.BeginRead(inputData, 1 + bytesReadSoFar,
inputData.Length - (bytesReadSoFar + 1), ae.End(), null);
yield return 1;
// Get number of bytes read from client
Int32 numBytesReadThisTime = stream.EndRead(ae.DequeueAsyncResult());
// Client closed connection; abandon this client request
if (numBytesReadThisTime == 0) yield break;
// Continue to read bytes from client until all bytes are in
bytesReadSoFar += (Byte)numBytesReadThisTime;
}
// All bytes have been read, process the input data
Byte[] outputData = ProcessData(inputData);
inputData = null; // Allow early GC
// Write outputData back to client
stream.BeginWrite(outputData, 0, outputData.Length, ae.End(), null);
yield return 1;
stream.EndWrite(ae.DequeueAsyncResult());
}
}
}
private IEnumerator<int> ProcessRequest(TcpClient client, AsyncEnumerator ae)
{
try
{
using (client)
using (var stream = client.GetStream())
{
var sender = client.Client.RemoteEndPoint;
var lenOfDataToReadBuffer = new byte[sizeof(int)];
var lenEnumerator = new AsyncEnumerator(ae.ToString());
try
{
lenEnumerator.BeginExecute(
StreamUtil.ReadBytes(lenOfDataToReadBuffer, stream, lenEnumerator, "length data",false), ae.End());
}
catch (Exception exception)
{
logger.Warn("Unable to read length data from " + sender, exception);
yield break;
}
yield return 1;
try
{
lenEnumerator.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to read length data from " + sender, exception);
yield break;
}
var lengthOfDataToRead = BitConverter.ToInt32(lenOfDataToReadBuffer, 0);
if (lengthOfDataToRead < 0)
{
logger.WarnFormat("Got invalid length {0} from sender {1}", lengthOfDataToRead, sender);
yield break;
}
logger.DebugFormat("Reading {0} bytes from {1}", lengthOfDataToRead, sender);
var buffer = new byte[lengthOfDataToRead];
var readBufferEnumerator = new AsyncEnumerator(ae.ToString());
try
{
readBufferEnumerator.BeginExecute(
StreamUtil.ReadBytes(buffer, stream, readBufferEnumerator, "message data", false), ae.End());
}
catch (Exception exception)
{
logger.Warn("Unable to read message data from " + sender, exception);
yield break;
}
yield return 1;
try
{
readBufferEnumerator.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to read message data from " + sender, exception);
yield break;
}
Message[] messages = null;
try
{
messages = SerializationExtensions.ToMessages(buffer);
logger.DebugFormat("Deserialized {0} messages from {1}", messages.Length, sender);
}
catch (Exception exception)
{
logger.Warn("Failed to deserialize messages from " + sender, exception);
}
if (messages == null)
{
try
{
stream.BeginWrite(ProtocolConstants.SerializationFailureBuffer, 0,
ProtocolConstants.SerializationFailureBuffer.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.Warn("Unable to send serialization format error to " + sender, exception);
yield break;
}
yield return 1;
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to send serialization format error to " + sender, exception);
}
yield break;
}
IMessageAcceptance acceptance = null;
byte[] errorBytes = null;
try
{
acceptance = acceptMessages(messages);
logger.DebugFormat("All messages from {0} were accepted", sender);
}
catch (QueueDoesNotExistsException)
{
logger.WarnFormat("Failed to accept messages from {0} because queue does not exists", sender);
errorBytes = ProtocolConstants.QueueDoesNoExiststBuffer;
}
catch (Exception exception)
{
errorBytes = ProtocolConstants.ProcessingFailureBuffer;
logger.Warn("Failed to accept messages from " + sender, exception);
}
if (errorBytes != null)
{
try
{
stream.BeginWrite(errorBytes, 0,
errorBytes.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.Warn("Unable to send processing failure from " + sender, exception);
yield break;
}
yield return 1;
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to send processing failure from " + sender, exception);
}
yield break;
}
logger.DebugFormat("Sending reciept notice to {0}", sender);
try
{
stream.BeginWrite(ProtocolConstants.RecievedBuffer, 0, ProtocolConstants.RecievedBuffer.Length,
ae.End(), null);
}
catch (Exception exception)
{
logger.Warn("Could not send reciept notice to " + sender, exception);
acceptance.Abort();
yield break;
}
yield return 1;
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Could not send reciept notice to " + sender, exception);
acceptance.Abort();
yield break;
}
logger.DebugFormat("Reading acknowledgement about accepting messages to {0}", sender);
var acknowledgementBuffer = new byte[ProtocolConstants.AcknowledgedBuffer.Length];
var readAcknoweldgement = new AsyncEnumerator(ae.ToString());
try
{
readAcknoweldgement.BeginExecute(
StreamUtil.ReadBytes(acknowledgementBuffer, stream, readAcknoweldgement, "acknowledgement", false),
ae.End());
}
catch (Exception exception)
{
logger.Warn("Error reading acknowledgement from " + sender, exception);
acceptance.Abort();
yield break;
}
yield return 1;
try
{
readAcknoweldgement.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Error reading acknowledgement from " + sender, exception);
acceptance.Abort();
yield break;
}
var senderResponse = Encoding.Unicode.GetString(acknowledgementBuffer);
if (senderResponse != ProtocolConstants.Acknowledged)
{
logger.WarnFormat("Sender did not respond with proper acknowledgement, the reply was {0}",
senderResponse);
acceptance.Abort();
}
bool commitSuccessful;
try
{
acceptance.Commit();
commitSuccessful = true;
}
catch (Exception exception)
{
logger.Warn("Unable to commit messages from " + sender, exception);
commitSuccessful = false;
}
if (commitSuccessful == false)
{
bool writeSuccessful;
try
{
stream.BeginWrite(ProtocolConstants.RevertBuffer, 0, ProtocolConstants.RevertBuffer.Length,
ae.End(),
null);
writeSuccessful = true;
}
catch (Exception e)
{
logger.Warn("Unable to send revert message to " + sender, e);
writeSuccessful = false;
}
if (writeSuccessful)
{
yield return 1;
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.Warn("Unable to send revert message to " + sender, exception);
}
}
}
}
}
finally
{
var copy = CompletedRecievingMessages;
if (copy != null)
copy();
}
}
private IEnumerator<Int32> ExecuteWithAsyncEnumerator(AsyncEnumerator ae)
{
for (Int32 n = 0; n < c_iterations; n++)
{
((WebService)m_webService).BeginGetStockQuotes(ae.End(), null);
}
// NOTE: AsyncEnumerator captures the calling thread's SynchronizationContext.
// Set the Wintellect.Threading.AsyncProgModel.SynchronizationContext type to
// null so that the callback continues on a ThreadPool thread.
ae.SyncContext = null;
yield return c_iterations;
for (Int32 n = 0; n < c_iterations; n++)
{
((WebService)m_webService).EndGetStockQuotes(ae.DequeueAsyncResult());
}
// AsyncEnumerator captures the synchronization context.
SetStatus("AsyncEnumerator completed.", StatusState.Ready);
}
public IEnumerator<int> AsyncLogin(LoginParameter parameter,AsyncEnumerator ae)
{
string connectionString = SettingManager.Default.ConnectionString;
LoginInfo loginInfo = new LoginInfo() { Parameter=parameter};
if (LoginRetryTimeHelper.IsFailedCountExceeded(parameter.LoginId, ParticipantType.Customer, connectionString))
{
loginInfo.Status = LoginStatus.ExceedMaxRetryCount;
OnCompleted(loginInfo);
yield break;
}
if (!parameter.LoginId.HasValue())
{
loginInfo.Status = LoginStatus.LoginIdIsEmpty;
OnCompleted(loginInfo);
yield break;
}
Application.Default.ParticipantService.BeginLogin(parameter.LoginId, parameter.Password,ae.End(), null);
yield return 1;
try
{
loginInfo.UserID = Application.Default.ParticipantService.EndLogin(ae.DequeueAsyncResult());
}
catch (Exception ex)
{
_Logger.Error(ex);
loginInfo.Status = LoginStatus.ParticipantServiceLoginFailed;
OnCompleted(loginInfo);
yield break;
}
if (loginInfo.UserID == Guid.Empty)
{
loginInfo.Status = LoginStatus.UserIdIsEmpty;
OnCompleted(loginInfo);
yield break;
}
Guid programID = new Guid(SettingManager.Default.GetJavaTraderSettings("TradingConsole"));
Guid permissionID = new Guid(SettingManager.Default.GetJavaTraderSettings("Run"));
Application.Default.SecurityService.BeginCheckPermission(loginInfo.UserID, programID, permissionID, "", "", loginInfo.UserID, ae.End(), null);
yield return 1;
bool isAuthrized = false;
try
{
string message;
isAuthrized = Application.Default.SecurityService.EndCheckPermission(ae.DequeueAsyncResult(), out message);
}
catch (Exception ex)
{
_Logger.Error(ex);
loginInfo.Status = LoginStatus.CheckPermissionFailed;
OnCompleted(loginInfo);
yield break;
}
if (!isAuthrized)
{
loginInfo.Status = LoginStatus.NotAuthrized;
OnCompleted(loginInfo);
yield break;
}
var token = new Token(Guid.Empty, UserType.Customer, parameter.AppType);
token.UserID = loginInfo.UserID;
token.SessionID = parameter.Request.ClientInfo.Session.ToString();
SessionManager.Default.AddToken(parameter.Request.ClientInfo.Session, token);
var stateServerCallToken = new Token
{
UserID = token.UserID,
AppType = AppType.TradingConsole,
SessionID = token.SessionID,
UserType=token.UserType
};
Application.Default.StateServer.BeginLogin(stateServerCallToken, ae.End(), null);
yield return 1;
bool isStateServerLogined = false;
try
{
isStateServerLogined = Application.Default.StateServer.EndLogin(ae.DequeueAsyncResult());
}
catch (Exception ex)
{
_Logger.Error(ex);
loginInfo.Status = LoginStatus.StateServerLoginFailed;
OnCompleted(loginInfo);
yield break;
}
if (!isStateServerLogined)
{
loginInfo.Status = LoginStatus.StateServerNotLogined;
OnCompleted(loginInfo);
yield break;
}
loginInfo.Status = LoginStatus.Success;
OnCompleted(loginInfo);
}
static IEnumerator<Int32> HandleClient(AsyncEnumerator ae,
ServerState server,
ClientState client,
TcpClient tcpRecv,
TcpClient tcpSend,
BufferWrapper bw,
FilterFunc filterFunc)
{
// add the client to the clients list
{
server.clientsMutex.BeginRegion(SyncGateMode.Exclusive, ae.End());
yield return 1;
var mutexResult = ae.DequeueAsyncResult();
{
if (!server.clients.ContainsKey(client.localtcp))
{
server.clients[client.localtcp] = client;
}
}
server.clientsMutex.EndRegion(mutexResult);
}
Socket sockRecv = tcpRecv.Client;
Socket sockSend = tcpSend.Client;
bool wantDisconnect = false;
int len = 0;
while (true)
{
// read message
try
{
// resize buffer if needed so that it has initialbuffersize spaces at the end
if((bw.buffer.Length - len) < server.settings.initialbuffersize)
{
Array.Resize(ref bw.buffer, len + server.settings.initialbuffersize);
}
sockRecv.BeginReceive(bw.buffer, len, server.settings.initialbuffersize, SocketFlags.None, ae.End(), null);
}
catch (Exception)
{
break;
}
yield return 1;
try
{
int tmplen = sockRecv.EndReceive(ae.DequeueAsyncResult());
if (tmplen == 0)
{
break;
}
else
{
len += tmplen;
}
}
catch (Exception)
{
break;
}
// filter the packets here
switch (filterFunc(client, bw.buffer, len))
{
case FilterIntent.Buffer:
break;
case FilterIntent.Accept:
int sent = 0;
while(sent < len)
{
// echo the data back to the client
try
{
sockSend.BeginSend(bw.buffer, sent, len-sent, SocketFlags.None, ae.End(), null);
}
catch (Exception)
{
wantDisconnect = true;
break;
}
yield return 1;
try
{
sent += sockSend.EndSend(ae.DequeueAsyncResult());
}
catch (Exception)
{
wantDisconnect = true;
break;
}
}
len = 0;
break;
case FilterIntent.Drop:
len = 0;
break;
case FilterIntent.Disconnect:
wantDisconnect = true;
break;
}
if(wantDisconnect)
break;
}
// remove the client from the list
{
server.clientsMutex.BeginRegion(SyncGateMode.Exclusive, ae.End());
yield return 1;
var mutexResult = ae.DequeueAsyncResult();
{
if (server.clients.ContainsKey(client.localtcp))
{
var removed = server.clients.Remove(client.localtcp);
Console.WriteLine("Client disconnected {0} - {1}", client.localtcp.Client.RemoteEndPoint, removed);
// dont forget to dispose it
tcpRecv.Close();
tcpSend.Close();
}
}
server.clientsMutex.EndRegion(mutexResult);
}
}
private IEnumerator<Int32> Process(AsyncEnumerator ae)
{
StringBuilder sb = new StringBuilder();
while (true)
{
if (charPos == charLen)
{
do
{
charLen = 0;
charPos = 0;
byteLen = 0;
stream.BeginRead(byteBuffer, 0, byteBuffer.Length, ae.End(), null);
yield return 1;
byteLen = stream.EndRead(ae.DequeueAsyncResult());
if (byteLen == 0)
{
if (sb.Length > 0)
{
LineRead(this, sb.ToString());
sb.Length = 0;
}
EOFReached(this);
yield break;
}
charLen += decoder.GetChars(byteBuffer, 0, byteLen, charBuffer, charLen);
} while (charLen ==0);
}
int i = charPos;
do
{
char ch = charBuffer[i];
if (ch == '\r' || ch == '\n')
{
sb.Append(charBuffer, charPos, i - charPos);
charPos = i + 1;
if (ch == '\r' && (charPos < charLen )) //|| ReadBuffer() > 0)
{
if (charBuffer[charPos] == '\n')
{
charPos++;
i++;
}
}
LineRead(this, sb.ToString());
sb.Length=0;
}
i++;
} while (i < charLen);
i = charLen - charPos;
sb.Append(charBuffer, charPos, i);
charPos = charLen;
}
}
private IEnumerator<Int32> ExecuteWithAsyncEnumerator(AsyncEnumerator ae)
{
for (Int32 n = 0; n < c_iterations; n++)
{
Cargo cargo = CargoFactory.CreateNew("Glyfada" + n, "Perachora" + n);
App.Database.BeginSave<Cargo>(cargo, ae.End(), null);
}
// NOTE: AsyncEnumerator captures the calling thread's SynchronizationContext.
// Set the Wintellect.Threading.AsyncProgModel.SynchronizationContext type to
// null so that the callback continues on a ThreadPool thread.
ae.SyncContext = null;
yield return c_iterations;
for (Int32 n = 0; n < c_iterations; n++)
{
App.Database.EndSave(ae.DequeueAsyncResult());
}
// AsyncEnumerator captures the synchronization context.
SetStatus("AsyncEnumerator completed.", StatusState.Ready);
}
private IEnumerator<int> SendInternal(AsyncEnumerator ae)
{
try
{
using (var client = new TcpClient())
{
try
{
client.BeginConnect(Destination.Host, Destination.Port,
ae.End(),
null);
}
catch (Exception exception)
{
logger.WarnFormat("Failed to connect to {0} because {1}", Destination, exception);
Failure(exception);
yield break;
}
yield return 1;
try
{
client.EndConnect(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Failed to connect to {0} because {1}", Destination, exception);
Failure(exception);
yield break;
}
logger.DebugFormat("Successfully connected to {0}", Destination);
using (var stream = client.GetStream())
{
var buffer = Messages.Serialize();
var bufferLenInBytes = BitConverter.GetBytes(buffer.Length);
logger.DebugFormat("Writing length of {0} bytes to {1}", buffer.Length, Destination);
try
{
stream.BeginWrite(bufferLenInBytes, 0, bufferLenInBytes.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
yield return 1;
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
logger.DebugFormat("Writing {0} bytes to {1}", buffer.Length, Destination);
try
{
stream.BeginWrite(buffer, 0, buffer.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
yield return 1;
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Could not write to {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
logger.DebugFormat("Successfully wrote to {0}", Destination);
var recieveBuffer = new byte[ProtocolConstants.RecievedBuffer.Length];
var readConfirmationEnumerator = new AsyncEnumerator();
try
{
readConfirmationEnumerator.BeginExecute(
StreamUtil.ReadBytes(recieveBuffer, stream, readConfirmationEnumerator, "recieve confirmation", false), ae.End());
}
catch (Exception exception)
{
logger.WarnFormat("Could not read confirmation from {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
yield return 1;
try
{
readConfirmationEnumerator.EndExecute(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Could not read confirmation from {0} because {1}", Destination,
exception);
Failure(exception);
yield break;
}
var recieveRespone = Encoding.Unicode.GetString(recieveBuffer);
if (recieveRespone == ProtocolConstants.QueueDoesNotExists)
{
logger.WarnFormat(
"Response from reciever {0} is that queue does not exists",
Destination);
Failure(new QueueDoesNotExistsException());
yield break;
}
else if(recieveRespone!=ProtocolConstants.Recieved)
{
logger.WarnFormat(
"Response from reciever {0} is not the expected one, unexpected response was: {1}",
Destination, recieveRespone);
Failure(null);
yield break;
}
try
{
stream.BeginWrite(ProtocolConstants.AcknowledgedBuffer, 0,
ProtocolConstants.AcknowledgedBuffer.Length, ae.End(), null);
}
catch (Exception exception)
{
logger.WarnFormat("Failed to write acknowledgement to reciever {0} because {1}",
Destination, exception);
Failure(exception);
yield break;
}
yield return 1;
try
{
stream.EndWrite(ae.DequeueAsyncResult());
}
catch (Exception exception)
{
logger.WarnFormat("Failed to write acknowledgement to reciever {0} because {1}",
Destination, exception);
Failure(exception);
yield break;
}
var bookmarks = Success();
buffer = new byte[ProtocolConstants.RevertBuffer.Length];
var readRevertMessage = new AsyncEnumerator(ae.ToString());
bool startingToReadFailed = false;
try
{
readRevertMessage.BeginExecute(
StreamUtil.ReadBytes(buffer, stream, readRevertMessage, "revert", true), ae.End());
}
catch (Exception)
{
//more or less expected
startingToReadFailed = true;
}
if (startingToReadFailed)
yield break;
yield return 1;
try
{
readRevertMessage.EndExecute(ae.DequeueAsyncResult());
var revert = Encoding.Unicode.GetString(buffer);
if (revert == ProtocolConstants.Revert)
{
logger.Warn("Got back revert message from receiver, reverting send");
Revert(bookmarks);
}
}
catch (Exception)
{
// expected, there is nothing to do here, the
// reciever didn't report anything for us
}
}
}
}
finally
{
var completed = SendCompleted;
if (completed != null)
completed();
}
}
private IEnumerator <int> ProcessCollectQuotes(AsyncEnumerator asyncEnumerator, string topic, CultureInfo culture, Uri uri, AssignQuotePageDataDelegate assignQuotesDelegate)
{
Uri quoteSourceUri = GetQuoteSourceUri(culture, topic);
Util.BeginFetchXmlPage(quoteSourceUri, asyncEnumerator.End(AsyncEnumeratorDiscardGroup, Util.EndFetchXmlPage), null);
yield return(1);
if (asyncEnumerator.IsCanceled())
{
yield break;
}
string contents;
try
{
XDocument xDocument = Util.EndFetchXmlPage(asyncEnumerator.DequeueAsyncResult());
if (xDocument == null)
{
throw new NullReferenceException();
}
// extracting the page contents
contents = GetXmlPageContents(xDocument);
}
catch (Exception ex)
{
OnErrorCollectingQuotes(new ErrorCollectingQuotesEventArgs(topic, culture, uri, ex));
yield break;
}
IAsyncResult getQuotesResult = BeginParsePageContentsAndExtractQuotes(topic, culture, contents, null,
asyncEnumerator.End(AsyncEnumeratorDiscardGroup, EndParsePageContentsAndExtractQuotes), null);
IAsyncResult getTopicTranslationsResult = BeginExtractTopicTranslations(contents,
asyncEnumerator.End(AsyncEnumeratorDiscardGroup, EndExtractTopicTranslations), null);
yield return(2);
if (asyncEnumerator.IsCanceled())
{
yield break;
}
try
{
TopicTranslation[] topicTranslations = EndExtractTopicTranslations(getTopicTranslationsResult);
SelectableQuoteCollection quotes = EndParsePageContentsAndExtractQuotes(getQuotesResult);
if (quotes.Count == 0)
{
OnNoQuotesCollected(new NoQuotesCollectedEventArgs(topic, culture, uri));
// Change by Ming Slogar on 26Apr2014 at 20:25
// Reason: The following line prevents the topic from being returned
// when it has no listed quotes.
//yield break;
}
assignQuotesDelegate.Invoke(quotes, topicTranslations);
}
catch (TopicAmbiguousException ex)
{
OnTopicAmbiguous(new TopicAmbiguousEventArgs(topic, culture, uri, ex.TopicChoices));
yield break;
}
catch (Exception ex)
{
OnErrorCollectingQuotes(new ErrorCollectingQuotesEventArgs(topic, culture, uri, ex));
yield break;
}
finally
{
// cleanup
asyncEnumerator.DequeueAsyncResult();
asyncEnumerator.DequeueAsyncResult();
lock (asyncEnumerator)
{
_asyncEnumerators.Remove(asyncEnumerator);
}
}
}
public IEnumerator <int> AsyncLogin(LoginParameter parameter, AsyncEnumerator ae)
{
string connectionString = SettingManager.Default.ConnectionString;
LoginInfo loginInfo = new LoginInfo()
{
Parameter = parameter
};
if (LoginRetryTimeHelper.IsFailedCountExceeded(parameter.LoginId, ParticipantType.Customer, connectionString))
{
loginInfo.Status = LoginStatus.ExceedMaxRetryCount;
OnCompleted(loginInfo);
yield break;
}
if (!parameter.LoginId.HasValue())
{
loginInfo.Status = LoginStatus.LoginIdIsEmpty;
OnCompleted(loginInfo);
yield break;
}
Application.Default.ParticipantService.BeginLogin(parameter.LoginId, parameter.Password, ae.End(), null);
yield return(1);
try
{
loginInfo.UserID = Application.Default.ParticipantService.EndLogin(ae.DequeueAsyncResult());
}
catch (Exception ex)
{
_Logger.Error(ex);
loginInfo.Status = LoginStatus.ParticipantServiceLoginFailed;
OnCompleted(loginInfo);
yield break;
}
if (loginInfo.UserID == Guid.Empty)
{
loginInfo.Status = LoginStatus.UserIdIsEmpty;
OnCompleted(loginInfo);
yield break;
}
Guid programID = new Guid(SettingManager.Default.GetJavaTraderSettings("TradingConsole"));
Guid permissionID = new Guid(SettingManager.Default.GetJavaTraderSettings("Run"));
Application.Default.SecurityService.BeginCheckPermission(loginInfo.UserID, programID, permissionID, "", "", loginInfo.UserID, ae.End(), null);
yield return(1);
bool isAuthrized = false;
try
{
string message;
isAuthrized = Application.Default.SecurityService.EndCheckPermission(ae.DequeueAsyncResult(), out message);
}
catch (Exception ex)
{
_Logger.Error(ex);
loginInfo.Status = LoginStatus.CheckPermissionFailed;
OnCompleted(loginInfo);
yield break;
}
if (!isAuthrized)
{
loginInfo.Status = LoginStatus.NotAuthrized;
OnCompleted(loginInfo);
yield break;
}
var token = new Token(Guid.Empty, UserType.Customer, parameter.AppType);
token.UserID = loginInfo.UserID;
token.SessionID = parameter.Request.ClientInfo.Session.ToString();
SessionManager.Default.AddToken(parameter.Request.ClientInfo.Session, token);
var stateServerCallToken = new Token
{
UserID = token.UserID,
AppType = AppType.TradingConsole,
SessionID = token.SessionID,
UserType = token.UserType
};
Application.Default.StateServer.BeginLogin(stateServerCallToken, ae.End(), null);
yield return(1);
bool isStateServerLogined = false;
try
{
isStateServerLogined = Application.Default.StateServer.EndLogin(ae.DequeueAsyncResult());
}
catch (Exception ex)
{
_Logger.Error(ex);
loginInfo.Status = LoginStatus.StateServerLoginFailed;
OnCompleted(loginInfo);
yield break;
}
if (!isStateServerLogined)
{
loginInfo.Status = LoginStatus.StateServerNotLogined;
OnCompleted(loginInfo);
yield break;
}
loginInfo.Status = LoginStatus.Success;
OnCompleted(loginInfo);
}
private static IEnumerator<Int32> FetchStockQuotesAsyncEnumerator(AsyncEnumerator ae, WebService svc)
{
svc.BeginFetchStockQuotes(ae.End(), null);
yield return 1;
IStockQuote qt = svc.EndFetchStockQuotes(ae.DequeueAsyncResult());
}
private static IEnumerator<Int32> Process(AsyncEnumerator ae, String server, String message)
{
TcpClient client = new TcpClient(server, 12000);
Stream stream = client.GetStream();
Byte[] outputString = Encoding.UTF8.GetBytes(message);
Byte[] outputData = new Byte[1 + outputString.Length];
outputData[0] = (Byte)outputString.Length;
Array.Copy(outputString, 0, outputData, 1, outputString.Length);
stream.BeginWrite(outputData, 0, outputData.Length, ae.End(), null);
yield return 1;
stream.EndWrite(ae.DequeueAsyncResult());
Byte[] inputData = new Byte[1 + 255];
stream.BeginRead(inputData, 0, 1, ae.End(), null);
yield return 1;
// Server closed connection
if (stream.EndRead(ae.DequeueAsyncResult()) == 0) { client.Close(); yield break; }
// Start to read 'length' bytes of data from server
Int32 dataLength = inputData[0];
Array.Resize(ref inputData, 1 + dataLength);
Int32 bytesReadSoFar = 0;
while (bytesReadSoFar < dataLength) {
stream.BeginRead(inputData, 1, dataLength, ae.End(), null);
yield return 1;
// Get number of bytes read from server
Int32 numBytesReadThisTime = stream.EndRead(ae.DequeueAsyncResult());
// Server closed connection
if (numBytesReadThisTime == 0) { client.Close(); yield break; }
// Continue to read bytes from server until all bytes are in
bytesReadSoFar += (Byte)numBytesReadThisTime;
}
// All bytes have been read, Show the server's result
String result = Encoding.UTF8.GetString(inputData, 1, inputData[0]);
Console.WriteLine("Received={0}", result);
client.Close();
}
private IEnumerator <Int32> UploadFileInBlocks(AsyncEnumerator ae, String pathname, CloudBlockBlob blob, Action <Int32> blockUploaded)
{
Int64 fileLength;
using (var fs = new FileStream(pathname, FileMode.Open, FileAccess.Read, FileShare.Read))
using (var mmf = MemoryMappedFile.CreateFromFile(fs, null, fileLength = fs.Length, MemoryMappedFileAccess.Read, null, HandleInheritability.None, false)) {
Byte[] uploadedBlocks = new Byte[(fileLength - 1) / m_blockSize + 1];
// Find out which blocks have been uploaded already?
blob.BeginDownloadBlockList(BlockListingFilter.Uncommitted, AccessCondition.GenerateEmptyCondition(), null, null, ae.End(), null);
yield return(1);
try {
foreach (ListBlockItem lbi in blob.EndDownloadBlockList(ae.DequeueAsyncResult()))
{
Int32 blockId = lbi.Name.FromBase64ToInt32();
uploadedBlocks[blockId] = 1;
blockUploaded(blockId);
}
}
catch (StorageException e) {
if ((HttpStatusCode)e.RequestInformation.HttpStatusCode != HttpStatusCode.NotFound)
{
throw;
}
}
// Start uploading the remaining blocks:
Int32 blocksUploading = 0;
foreach (var blockNumber in GetBlockNumbersFromArray(uploadedBlocks))
{
// Start uploading up to 'm_concurrency' blocks
blocksUploading++;
var aeBlock = new AsyncEnumerator("Block #" + blockNumber);
aeBlock.BeginExecute(UploadBlock(aeBlock, mmf, blob, blockNumber,
(blockNumber == uploadedBlocks.Length - 1) ? fileLength % m_blockSize : m_blockSize), ae.End(), blockNumber);
if (blocksUploading < m_concurrency)
{
continue;
}
// As each block completes uploading, start uploading a new block (if any are left)
yield return(1);
blocksUploading--;
IAsyncResult result = ae.DequeueAsyncResult();
AsyncEnumerator.FromAsyncResult(result).EndExecute(result);
blockUploaded((Int32)result.AsyncState);
}
// Wait until all blocks have finished uploading and then commit them all
for (; blocksUploading > 0; blocksUploading--)
{
yield return(1);
IAsyncResult result = ae.DequeueAsyncResult();
AsyncEnumerator.FromAsyncResult(result).EndExecute(result);
blockUploaded((Int32)result.AsyncState);
}
// Commit all the blocks in order:
blob.BeginPutBlockList(Enumerable.Range(0, uploadedBlocks.Length).Select(b => b.ToBase64()), ae.End(), null);
yield return(1);
blob.EndPutBlockList(ae.DequeueAsyncResult());
}
}
private IEnumerator <Int32> GetImages(AsyncEnumerator ae)
{
ae.ThrowOnMissingDiscardGroup(true);
// Request all the images asynchronously
WebRequest[] requests = new WebRequest[]
{
WebRequest.Create(_imageUris[0]),
WebRequest.Create(m_chkSimFailure.Checked ? _imageUris[2] : _imageUris[1])
};
for (Int32 n = 0; n < requests.Length; n++)
{
requests[n].BeginGetResponse(
ae.EndVoid(0, asyncResult => { requests[(Int32)asyncResult.AsyncState].EndGetResponse(asyncResult).Close(); }), n);
}
// Set timeout if specified.
Int32 timeout;
if (Int32.TryParse(m_txtServerTime.Text, out timeout))
{
ae.SetCancelTimeout(timeout, null);
}
// WaitAsync for all operations to complete (or timeout)
yield return(requests.Length);
if (ae.IsCanceled())
{
m_lblPic1.Text = "Server couldn't process the request in the specified time.";
yield break;
}
for (Int32 n = 0; n < requests.Length; n++)
{
IAsyncResult result = ae.DequeueAsyncResult();
Int32 reqNum = (Int32)result.AsyncState;
Label lbl = (reqNum == 0) ? m_lblPic1 : m_lblPic2;
WebRequest request = requests[reqNum];
WebResponse response = null;
try
{
response = request.EndGetResponse(result);
lbl.Text = String.Format("Image at {0} is {1:N0} bytes",
response.ResponseUri, response.ContentLength);
}
catch (WebException e)
{
lbl.Text = String.Format("Error obtaining image at {0}: {1}",
request.RequestUri, e.Message);
}
finally
{
if (response != null)
{
response.Close();
}
}
}
}
// Because SyncContext is set, all the iterator code runs on the GUI thread
private IEnumerator<Int32> GetWebData(AsyncEnumerator ae, String[] uris)
{
ToggleStartAndCancelButtonState(false);
m_lbResults.Items.Clear();
// Auto-cancel after 5 seconds if the user desires
if (m_chkAutoCancel.Checked)
ae.SetCancelTimeout(5000, ae);
// Issue several web requests (all in discard group 0) simultaneously
foreach (String uri in uris) {
WebRequest webRequest = WebRequest.Create(uri);
// If the AsyncEnumerator is canceled, DiscardWebRequest cleans-up
// any outstanding operations as they complete in the future
webRequest.BeginGetResponse(ae.EndVoid(0, DiscardWebRequest), webRequest);
}
yield return uris.Length; // Process the completed web requests after all complete
String resultStatus; // Ultimate result of processing shown to user
// Check if iterator was canceled
Object cancelValue;
if (ae.IsCanceled(out cancelValue)) {
// Tell the AE to auto-cleanup any operations issued as part of discard group 0
ae.DiscardGroup(0);
// Note: In this example calling DiscardGroup above is not mandatory
// because the whole iterator is stopping execution; causing all
// discard groups to be discarded automatically.
resultStatus = (cancelValue == ae) ? "Timeout" : "User canceled";
goto Complete;
}
// Iterator wasn't canceled, process all the completed operations
for (Int32 n = 0; n < uris.Length; n++) {
// Grab the result of a completed web request
IAsyncResult result = ae.DequeueAsyncResult();
// Get the WebRequest object used to initate the request
// (see BeginGetResponse's last argument above)
WebRequest webRequest = (WebRequest)result.AsyncState;
// Build the String showing the result of this completed web request
String s = "URI=" + webRequest.RequestUri + ", ";
try {
using (WebResponse webResponse = webRequest.EndGetResponse(result)) {
s += "ContentLength=" + webResponse.ContentLength;
}
}
catch (WebException e) {
s += "Error=" + e.Message;
}
m_lbResults.Items.Add(s); // Add result of operation to listbox
}
resultStatus = "All operations completed.";
Complete:
// All operations have completed or cancelation occurred, tell user
MessageBox.Show(this, resultStatus);
// Reset everything so that the user can start over if they desire
m_ae = null; // Reset since we're done
ToggleStartAndCancelButtonState(true);
}
static IEnumerator<Int32> ServerConnectRemote(AsyncEnumerator ae, ServerState server, IPEndPoint ipe, TcpClient local)
{
// establish a client proxy -> real server connection
var remote = new TcpClient(ipe.AddressFamily);
var settings = server.settings;
remote.NoDelay = true;
remote.LingerState.Enabled = false;
remote.BeginConnect(IPAddress.Parse(settings.addressforward), settings.portforward, ae.End(), ae);
yield return 1;
try
{
remote.EndConnect(ae.DequeueAsyncResult());
}
catch (SocketException)
{
Console.WriteLine("A client failed to connect, has the real server started?");
local.Close();
remote.Close();
remote = null;
}
if(remote != null)
{
var bufParam = new ClientBufferParam();
{
server.bufferPoolMutex.BeginRegion(SyncGateMode.Exclusive, ae.End());
yield return 1;
var res = ae.DequeueAsyncResult();
server.AllocBuffer(ae, bufParam);
server.bufferPoolMutex.EndRegion(res);
}
{
var newClientState = new ClientState(local, remote);
var remoteAe = new AsyncEnumerator();
var localAe = new AsyncEnumerator();
var bw1 = new BufferWrapper(bufParam.sendbuffer);
var bw2 = new BufferWrapper(bufParam.recvbuffer);
localAe.BeginExecute(HandleClient(localAe, server, newClientState, local, remote, bw1, server.filterSend), ae.End(), localAe);
remoteAe.BeginExecute(HandleClient(remoteAe, server, newClientState, remote, local, bw2, server.filterRecv), ae.End(), remoteAe);
Console.WriteLine("Client Connected {0}", local.Client.RemoteEndPoint);
yield return 2;
for (int x = 0; x < 2; x++)
{
IAsyncResult ar = ae.DequeueAsyncResult();
((AsyncEnumerator)ar.AsyncState).EndExecute(ar);
}
bufParam.sendbuffer = bw1.buffer;
bufParam.recvbuffer = bw2.buffer;
}
{
server.bufferPoolMutex.BeginRegion(SyncGateMode.Exclusive, ae.End());
yield return 1;
var res = ae.DequeueAsyncResult();
server.FreeBuffer(ae, bufParam);
server.bufferPoolMutex.EndRegion(res);
}
}
}
static IEnumerator <int> ForwardingFiber(AsyncEnumerator ae, NetworkStream inputStream, NetworkStream outputStream)
{
while (!ae.IsCanceled())
{
byte[] outputRead = new byte[bufsize], outputWrite = new byte[bufsize];
byte[] inputRead = new byte[bufsize], inputWrite = new byte[bufsize];
// start off output and input reads.
// NB ObjectDisposedExceptions can be raised here when a socket is closed while an async read is in progress.
outputStream.BeginRead(outputRead, 0, bufsize, ae.End(1, ar => outputStream.EndRead(ar)), Operation.OutboundRead);
inputStream.BeginRead(inputRead, 0, bufsize, ae.End(1, ar => inputStream.EndRead(ar)), Operation.InboundRead);
var pendingops = 2;
while (!ae.IsCanceled())
{
// wait for the next operation to complete, the state object passed to each async
// call can be used to find out what completed.
if (pendingops == 0)
{
yield break;
}
yield return(1);
if (!ae.IsCanceled())
{
int byteCount;
var latestEvent = ae.DequeueAsyncResult();
var currentOp = (Operation)latestEvent.AsyncState;
if (currentOp == Operation.InboundRead)
{
byteCount = inputStream.EndRead(latestEvent);
if (byteCount == 0)
{
pendingops--;
outputStream.Close();
continue;
}
Array.Copy(inputRead, outputWrite, byteCount);
outputStream.BeginWrite(outputWrite, 0, byteCount, ae.EndVoid(1, outputStream.EndWrite), Operation.OutboundWrite);
inputStream.BeginRead(inputRead, 0, bufsize, ae.End(1, ar => inputStream.EndRead(ar)), Operation.InboundRead);
}
else if (currentOp == Operation.OutboundRead)
{
byteCount = outputStream.EndRead(latestEvent);
if (byteCount == 0)
{
pendingops--;
inputStream.Close();
continue;
}
Array.Copy(outputRead, inputWrite, byteCount);
inputStream.BeginWrite(inputWrite, 0, byteCount, ae.EndVoid(1, inputStream.EndWrite), Operation.InboundWrite);
outputStream.BeginRead(outputRead, 0, bufsize, ae.End(1, ar => outputStream.EndRead(ar)), Operation.OutboundRead);
}
else if (currentOp == Operation.InboundWrite)
{
inputStream.EndWrite(latestEvent);
}
else if (currentOp == Operation.OutboundWrite)
{
outputStream.EndWrite(latestEvent);
}
}
}
}
}
