本文整理汇总了C#中IConnection.ChangeState方法的典型用法代码示例。如果您正苦于以下问题：C# IConnection.ChangeState方法的具体用法？C# IConnection.ChangeState怎么用？C# IConnection.ChangeState使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IConnection的用法示例。
在下文中一共展示了IConnection.ChangeState方法的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: FireReconnected
/// <summary>
///
/// </summary>
private static void FireReconnected(IConnection connection)
{
// Mark the connection as connected
if (connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
connection.OnReconnected();
}
}示例2: OpenConnection
private void OpenConnection(IConnection connection, string data, Action initializeCallback, Action<Exception> errorCallback)
{
// If we're reconnecting add /connect to the url
bool reconnecting = initializeCallback == null;
var callbackInvoker = new ThreadSafeInvoker();
var url = (reconnecting ? connection.Url : connection.Url + "connect") + GetReceiveQueryString(connection, data);
Action<IRequest> prepareRequest = PrepareRequest(connection);
#if NET35
Debug.WriteLine(String.Format(System.Globalization.CultureInfo.InvariantCulture, "SSE: GET {0}", (object)url));
#else
Debug.WriteLine("SSE: GET {0}", (object)url);
#endif
_httpClient.GetAsync(url, request =>
{
prepareRequest(request);
request.Accept = "text/event-stream";
}).ContinueWith(task =>
{
if (task.IsFaulted)
{
Exception exception = task.Exception.Unwrap();
if (!ExceptionHelper.IsRequestAborted(exception))
{
if (errorCallback != null)
{
callbackInvoker.Invoke((cb, ex) => cb(ex), errorCallback, exception);
}
else if (reconnecting)
{
// Only raise the error event if we failed to reconnect
connection.OnError(exception);
Reconnect(connection, data);
}
}
}
else
{
IResponse response = task.Result;
Stream stream = response.GetResponseStream();
var eventSource = new EventSourceStreamReader(stream);
bool retry = true;
#if MONOTOUCH
lock(connection.Items)
{
#endif
connection.Items[EventSourceKey] = eventSource;
#if MONOTOUCH
}
#endif
eventSource.Opened = () =>
{
if (initializeCallback != null)
{
callbackInvoker.Invoke(initializeCallback);
}
if (reconnecting && connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
// Raise the reconnect event if the connection comes back up
connection.OnReconnected();
}
};
eventSource.Message = sseEvent =>
{
if (sseEvent.Type == EventType.Data)
{
if (sseEvent.Data.Equals("initialized", StringComparison.OrdinalIgnoreCase))
{
return;
}
bool timedOut;
bool disconnected;
ProcessResponse(connection, sseEvent.Data, out timedOut, out disconnected);
if (disconnected)
{
retry = false;
}
}
};
eventSource.Closed = exception =>
{
if (exception != null && !ExceptionHelper.IsRequestAborted(exception))
{
// Don't raise exceptions if the request was aborted (connection was stopped).
connection.OnError(exception);
}
//.........这里部分代码省略.........
示例3: Reconnect
private void Reconnect(IConnection connection, string data)
{
// Wait for a bit before reconnecting
TaskAsyncHelper.Delay(ReconnectDelay).Then(() =>
{
if (connection.State == ConnectionState.Reconnecting ||
connection.ChangeState(ConnectionState.Connected, ConnectionState.Reconnecting))
{
// Now attempt a reconnect
OpenConnection(connection, data, initializeCallback: null, errorCallback: null);
}
});
}示例4: OpenConnection
private void OpenConnection(IConnection connection,
string data,
CancellationToken disconnectToken,
Action initializeCallback,
Action<Exception> errorCallback)
{
// If we're reconnecting add /connect to the url
bool reconnecting = initializeCallback == null;
var callbackInvoker = new ThreadSafeInvoker();
var requestDisposer = new Disposer();
var url = (reconnecting ? connection.Url : connection.Url + "connect") + GetReceiveQueryString(connection, data);
connection.Trace(TraceLevels.Events, "SSE: GET {0}", url);
HttpClient.Get(url, req =>
{
_request = req;
connection.PrepareRequest(_request);
_request.Accept = "text/event-stream";
}).ContinueWith(task =>
{
if (task.IsFaulted)
{
Exception exception = task.Exception.Unwrap();
if (!ExceptionHelper.IsRequestAborted(exception))
{
if (errorCallback != null)
{
callbackInvoker.Invoke((cb, ex) => cb(ex), errorCallback, exception);
}
else if (reconnecting)
{
// Only raise the error event if we failed to reconnect
connection.OnError(exception);
Reconnect(connection, data, disconnectToken);
}
}
requestDisposer.Dispose();
}
else
{
var response = task.Result;
Stream stream = response.GetStream();
var eventSource = new EventSourceStreamReader(connection, stream);
bool retry = true;
var esCancellationRegistration = disconnectToken.SafeRegister(state =>
{
retry = false;
((IRequest)state).Abort();
},
_request);
eventSource.Opened = () =>
{
// If we're not reconnecting, then we're starting the transport for the first time. Trigger callback only on first start.
if (!reconnecting)
{
callbackInvoker.Invoke(initializeCallback);
}
else if (connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
// Raise the reconnect event if the connection comes back up
connection.OnReconnected();
}
};
eventSource.Message = sseEvent =>
{
if (sseEvent.EventType == EventType.Data)
{
if (sseEvent.Data.Equals("initialized", StringComparison.OrdinalIgnoreCase))
{
return;
}
bool timedOut;
bool disconnected;
TransportHelper.ProcessResponse(connection, sseEvent.Data, out timedOut, out disconnected);
if (disconnected)
{
retry = false;
connection.Disconnect();
}
}
};
eventSource.Closed = exception =>
{
if (exception != null)
{
// Check if the request is aborted
bool isRequestAborted = ExceptionHelper.IsRequestAborted(exception);
//.........这里部分代码省略.........
示例5: PollingLoop
private void PollingLoop(IConnection connection, string data, Action initializeCallback, Action<Exception> errorCallback, bool raiseReconnect = false)
{
string url = connection.Url;
// This is only necessary for the initial request where initializeCallback and errorCallback are non-null
int callbackFired = 0;
if (connection.MessageId == null)
{
url += "connect";
}
else if (raiseReconnect)
{
url += "reconnect";
if (!connection.ChangeState(ConnectionState.Connected, ConnectionState.Reconnecting))
{
return;
}
}
url += GetReceiveQueryString(connection, data);
#if NET35
Debug.WriteLine(String.Format(System.Globalization.CultureInfo.InvariantCulture, "LP: {0}", (object)url));
#else
Debug.WriteLine("LP: {0}", (object)url);
#endif
_httpClient.PostAsync(url, PrepareRequest(connection)).ContinueWith(task =>
{
// Clear the pending request
connection.Items.Remove(HttpRequestKey);
bool shouldRaiseReconnect = false;
bool disconnectedReceived = false;
try
{
if (!task.IsFaulted)
{
if (raiseReconnect)
{
// If the timeout for the reconnect hasn't fired as yet just fire the
// event here before any incoming messages are processed
FireReconnected(connection);
}
// Get the response
var raw = task.Result.ReadAsString();
#if NET35
Debug.WriteLine(String.Format(System.Globalization.CultureInfo.InvariantCulture, "LP Receive: {0}", (object)raw));
#else
Debug.WriteLine("LP Receive: {0}", (object)raw);
#endif
ProcessResponse(connection, raw, out shouldRaiseReconnect, out disconnectedReceived);
}
}
finally
{
if (disconnectedReceived)
{
connection.Stop();
}
else
{
bool requestAborted = false;
if (task.IsFaulted)
{
// Raise the reconnect event if we successfully reconnect after failing
shouldRaiseReconnect = true;
// Get the underlying exception
Exception exception = task.Exception.Unwrap();
// If the error callback isn't null then raise it and don't continue polling
if (errorCallback != null &&
Interlocked.Exchange(ref callbackFired, 1) == 0)
{
// Call the callback
errorCallback(exception);
}
else
{
// Figure out if the request was aborted
requestAborted = ExceptionHelper.IsRequestAborted(exception);
// Sometimes a connection might have been closed by the server before we get to write anything
// so just try again and don't raise OnError.
if (!requestAborted && !(exception is IOException))
{
// Raise on error
connection.OnError(exception);
// If the connection is still active after raising the error event wait for 2 seconds
// before polling again so we aren't hammering the server
TaskAsyncHelper.Delay(_errorDelay).Then(() =>
//.........这里部分代码省略.........
示例6: OpenConnection
internal void OpenConnection(IConnection connection, string data, CancellationToken disconnectToken, bool reconnecting)
{
// If we're reconnecting add /connect to the url
var url = reconnecting
? UrlBuilder.BuildReconnect(connection, Name, data)
: UrlBuilder.BuildConnect(connection, Name, data);
connection.Trace(TraceLevels.Events, "SSE: GET {0}", url);
var getTask = HttpClient.Get(url, req =>
{
_request = req;
_request.Accept = "text/event-stream";
connection.PrepareRequest(_request);
}, isLongRunning: true);
var requestCancellationRegistration = disconnectToken.SafeRegister(state =>
{
_stop = true;
// This will no-op if the request is already finished.
((IRequest)state).Abort();
}, _request);
getTask.ContinueWith(task =>
{
if (task.IsFaulted || task.IsCanceled)
{
var exception = task.IsCanceled
? new OperationCanceledException(Resources.Error_TaskCancelledException)
: task.Exception.Unwrap();
if (!reconnecting)
{
TransportFailed(exception);
}
else if (!_stop)
{
// Only raise the error event if we failed to reconnect
connection.OnError(exception);
Reconnect(connection, data, disconnectToken);
}
requestCancellationRegistration.Dispose();
}
else
{
// If the disconnect token is canceled the response to the task doesn't matter.
if (disconnectToken.IsCancellationRequested)
{
return;
}
var response = task.Result;
Stream stream = response.GetStream();
var eventSource = new EventSourceStreamReader(connection, stream);
eventSource.Opened = () =>
{
// This will noop if we're not in the reconnecting state
if (connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
// Raise the reconnect event if the connection comes back up
connection.OnReconnected();
}
};
eventSource.Message = sseEvent =>
{
if (sseEvent.EventType == EventType.Data &&
!sseEvent.Data.Equals("initialized", StringComparison.OrdinalIgnoreCase))
{
ProcessResponse(connection, sseEvent.Data);
}
};
eventSource.Closed = exception =>
{
if (exception != null)
{
// Check if the request is aborted
if (!ExceptionHelper.IsRequestAborted(exception))
{
// Don't raise exceptions if the request was aborted (connection was stopped).
connection.OnError(exception);
}
}
requestCancellationRegistration.Dispose();
response.Dispose();
if (_stop)
{
AbortHandler.CompleteAbort();
}
else if (AbortHandler.TryCompleteAbort())
//.........这里部分代码省略.........
示例7: Reconnect
// internal for testing
internal async Task Reconnect(IConnection connection, string connectionData)
{
var reconnectUrl = UrlBuilder.BuildReconnect(connection, Name, connectionData);
while (TransportHelper.VerifyLastActive(connection) && connection.EnsureReconnecting() && !_disconnectToken.IsCancellationRequested)
{
try
{
await StartWebSocket(connection, reconnectUrl);
if (connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
connection.OnReconnected();
}
break;
}
catch (OperationCanceledException)
{
break;
}
catch (Exception ex)
{
connection.OnError(ex);
}
await Task.Delay(ReconnectDelay);
}
}示例8: OpenConnection
private void OpenConnection(IConnection connection,
string data,
CancellationToken disconnectToken,
Action initializeCallback,
Action<Exception> errorCallback)
{
// If we're reconnecting add /connect to the url
bool reconnecting = initializeCallback == null;
var callbackInvoker = new ThreadSafeInvoker();
var requestDisposer = new Disposer();
var url = (reconnecting ? connection.Url : connection.Url + "connect") + GetReceiveQueryString(connection, data);
IRequest request = null;
#if NET35
Debug.WriteLine(String.Format(CultureInfo.InvariantCulture, "SSE: GET {0}", (object)url));
#else
Debug.WriteLine("SSE: GET {0}", (object)url);
#endif
HttpClient.Get(url, req =>
{
request = req;
connection.PrepareRequest(request);
request.Accept = "text/event-stream";
}).ContinueWith(task =>
{
if (task.IsFaulted)
{
Exception exception = task.Exception.Unwrap();
if (!ExceptionHelper.IsRequestAborted(exception))
{
if (errorCallback != null)
{
callbackInvoker.Invoke((cb, ex) => cb(ex), errorCallback, exception);
}
else if (reconnecting)
{
// Only raise the error event if we failed to reconnect
connection.OnError(exception);
Reconnect(connection, data, disconnectToken);
}
}
requestDisposer.Dispose();
}
else
{
IResponse response = task.Result;
Stream stream = response.GetResponseStream();
var eventSource = new EventSourceStreamReader(stream);
bool retry = true;
var esCancellationRegistration = disconnectToken.SafeRegister(es =>
{
retry = false;
es.Close();
}, eventSource);
eventSource.Opened = () =>
{
if (!reconnecting)
{
callbackInvoker.Invoke(initializeCallback);
}
else if (connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
// Raise the reconnect event if the connection comes back up
connection.OnReconnected();
}
};
eventSource.Message = sseEvent =>
{
if (sseEvent.EventType == EventType.Data)
{
if (sseEvent.Data.Equals("initialized", StringComparison.OrdinalIgnoreCase))
{
return;
}
bool timedOut;
bool disconnected;
TransportHelper.ProcessResponse(connection, sseEvent.Data, out timedOut, out disconnected);
if (disconnected)
{
retry = false;
connection.Disconnect();
}
}
};
eventSource.Closed = exception =>
{
bool isRequestAborted = false;
if (exception != null)
//.........这里部分代码省略.........
示例9: OpenConnection
private void OpenConnection(IConnection connection,
string data,
CancellationToken disconnectToken,
Action initializeCallback,
Action<Exception> errorCallback)
{
// If we're reconnecting add /connect to the url
bool reconnecting = initializeCallback == null;
var callbackInvoker = new ThreadSafeInvoker();
var requestDisposer = new Disposer();
Action initializeInvoke = () =>
{
callbackInvoker.Invoke(initializeCallback);
};
var url = connection.Url + (reconnecting ? "reconnect" : "connect") + GetReceiveQueryString(connection, data);
connection.Trace(TraceLevels.Events, "SSE: GET {0}", url);
HttpClient.Get(url, req =>
{
_request = req;
_request.Accept = "text/event-stream";
connection.PrepareRequest(_request);
}, isLongRunning: true).ContinueWith(task =>
{
if (task.IsFaulted || task.IsCanceled)
{
Exception exception;
if (task.IsCanceled)
{
exception = new OperationCanceledException(Resources.Error_TaskCancelledException);
}
else
{
exception = task.Exception.Unwrap();
}
if (errorCallback != null)
{
callbackInvoker.Invoke((cb, ex) => cb(ex), errorCallback, exception);
}
else if (!_stop && reconnecting)
{
// Only raise the error event if we failed to reconnect
connection.OnError(exception);
Reconnect(connection, data, disconnectToken);
}
requestDisposer.Dispose();
}
else
{
// If the disconnect token is canceled the response to the task doesn't matter.
if (disconnectToken.IsCancellationRequested)
{
return;
}
var response = task.Result;
Stream stream = response.GetStream();
var eventSource = new EventSourceStreamReader(connection, stream);
var esCancellationRegistration = disconnectToken.SafeRegister(state =>
{
_stop = true;
((IRequest)state).Abort();
},
_request);
eventSource.Opened = () =>
{
// This will noop if we're not in the reconnecting state
if (connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
// Raise the reconnect event if the connection comes back up
connection.OnReconnected();
}
};
eventSource.Message = sseEvent =>
{
if (sseEvent.EventType == EventType.Data)
{
if (sseEvent.Data.Equals("initialized", StringComparison.OrdinalIgnoreCase))
{
return;
}
bool shouldReconnect;
bool disconnected;
TransportHelper.ProcessResponse(connection, sseEvent.Data, out shouldReconnect, out disconnected, initializeInvoke);
if (disconnected)
{
_stop = true;
//.........这里部分代码省略.........
示例10: OpenConnection
private void OpenConnection(IConnection connection, string data, Action initializeCallback, Action<Exception> errorCallback)
{
// If we're reconnecting add /connect to the url
bool reconnecting = initializeCallback == null;
var url = (reconnecting ? connection.Url : connection.Url + "connect") + GetReceiveQueryString(connection, data);
Action<IRequest> prepareRequest = PrepareRequest(connection);
#if NET35
Debug.WriteLine(String.Format(System.Globalization.CultureInfo.InvariantCulture, "SSE: GET {0}", (object)url));
#else
Debug.WriteLine("SSE: GET {0}", (object)url);
#endif
_httpClient.GetAsync(url, request =>
{
prepareRequest(request);
request.Accept = "text/event-stream";
}).ContinueWith(task =>
{
if (task.IsFaulted)
{
var exception = task.Exception.Unwrap();
if (!ExceptionHelper.IsRequestAborted(exception))
{
if (errorCallback != null &&
Interlocked.Exchange(ref _initializedCalled, 1) == 0)
{
errorCallback(exception);
}
else if (reconnecting)
{
// Only raise the error event if we failed to reconnect
connection.OnError(exception);
}
}
if (reconnecting)
{
// Retry
Reconnect(connection, data);
return;
}
}
else
{
IResponse response = task.Result;
Stream stream = response.GetResponseStream();
var eventSource = new EventSourceStreamReader(stream);
bool retry = true;
connection.Items[EventSourceKey] = eventSource;
eventSource.Opened = () =>
{
if (Interlocked.CompareExchange(ref _initializedCalled, 1, 0) == 0)
{
initializeCallback();
}
if (reconnecting && connection.ChangeState(ConnectionState.Reconnecting, ConnectionState.Connected))
{
// Raise the reconnect event if the connection comes back up
connection.OnReconnected();
}
};
eventSource.Error = connection.OnError;
eventSource.Message = sseEvent =>
{
if (sseEvent.Type == EventType.Data)
{
if (sseEvent.Data.Equals("initialized", StringComparison.OrdinalIgnoreCase))
{
return;
}
bool timedOut;
bool disconnected;
ProcessResponse(connection, sseEvent.Data, out timedOut, out disconnected);
if (disconnected)
{
retry = false;
}
}
};
eventSource.Closed = () =>
{
response.Close();
if (retry)
{
Reconnect(connection, data);
//.........这里部分代码省略.........