void ic_Faulted(object sender, EventArgs e)
{
ic.Abort();
ic = new InstanceContext(ServerCallback);
ic.Open();
listBox1.Items.Add("Channel Fault repaired");
}
public object AfterReceiveRequest(
ref Message request,
IClientChannel channel,
InstanceContext instanceContext)
{
HttpRequestMessageProperty requestProperty = null;
if (request.Properties.ContainsKey(HttpRequestMessageProperty.Name))
{
requestProperty = request.Properties[HttpRequestMessageProperty.Name] as HttpRequestMessageProperty;
}
if (requestProperty != null)
{
var origin = requestProperty.Headers["Origin"];
if (!string.IsNullOrEmpty(origin))
{
// if a cors options request (preflight) is detected,
// we create our own reply message and don't invoke any
// operation at all.
if (requestProperty.Method.ToUpperInvariant() == "OPTIONS")
{
instanceContext.Abort();
}
}
}
return(requestProperty);
}
public void Add(InstanceContext instanceContext)
{
bool flag = false;
lock (base.ThisLock)
{
if (base.State == LifetimeState.Opened)
{
if (instanceContext.InstanceContextManagerIndex != 0)
{
return;
}
if (this.firstFreeIndex == 0)
{
this.GrowItems();
}
this.AddItem(instanceContext);
base.IncrementBusyCountWithoutLock();
flag = true;
}
}
if (!flag)
{
instanceContext.Abort();
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ObjectDisposedException(base.GetType().ToString()));
}
}
public void OffLine()
{
client.Unsubscribe();
//client.OffLine("黄埔");
instanceContext.Abort();
instanceContext.Close();
client.Abort();
client.Close();
}
private async Task CloseInitiateAsync(CancellationToken token)
{
InstanceContext[] instances = ToArray();
for (int index = 0; index < instances.Length; index++)
{
InstanceContext instance = instances[index];
try
{
if (instance.State == CommunicationState.Opened)
{
Task result = instance.CloseAsync(token);
if (!result.IsCompleted)
{
ContinueCloseInstanceContext(result);
continue;
}
await result;
}
else
{
instance.Abort();
}
}
catch (ObjectDisposedException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
catch (InvalidOperationException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
catch (CommunicationException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
catch (TimeoutException e)
{
//if (TD.CloseTimeoutIsEnabled())
//{
// TD.CloseTimeout(e.Message);
//}
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
}
}
void CloseInitiate(TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
InstanceContext[] instances = this.ToArray();
for (int index = 0; index < instances.Length; index++)
{
InstanceContext instance = instances[index];
try
{
if (instance.State == CommunicationState.Opened)
{
IAsyncResult result = instance.BeginClose(timeoutHelper.RemainingTime(), Fx.ThunkCallback(new AsyncCallback(CloseInstanceContextCallback)), instance);
if (!result.CompletedSynchronously)
{
continue;
}
instance.EndClose(result);
}
else
{
instance.Abort();
}
}
catch (ObjectDisposedException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
catch (InvalidOperationException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
catch (CommunicationException e)
{
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
catch (TimeoutException e)
{
if (TD.CloseTimeoutIsEnabled())
{
TD.CloseTimeout(e.Message);
}
DiagnosticUtility.TraceHandledException(e, TraceEventType.Information);
}
}
}
internal void AbortInstanceContext()
{
if (InstanceContext != null && !isInstanceContextSingleton)
{
try
{
InstanceContext.Abort();
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
channelHandler.HandleError(e);
}
}
}
public void Initialize(InstanceContext instanceContext, Message message)
{
RemoteEndpointMessageProperty ep = message.Properties[RemoteEndpointMessageProperty.Name] as RemoteEndpointMessageProperty;
// which action do we want to throttle
if (message.Headers.Action.EndsWith("register") &&
ep != null &&
ep.Address != null)
{
// get the IP address
var item = cache[ep.Address];
if (item == null)
{
// not found, so init
cache.Add(
ep.Address,
new Counter {
Count = 0
},
new CacheItemPolicy
{
SlidingExpiration = new TimeSpan(0, 1, 0) // 1 minute
});
}
else
{
// how many calls?
var count = (Counter)item;
if (count.Count > 5)
{
instanceContext.Abort();
// not sure if this the best way to break
throw new Exception("throttle");
}
// add one call
count.Count++;
}
}
}
public void Logout()
{
Console.WriteLine("Logout");
_channelContext.Abort();
}
