protected override IEnumerator <AsyncStep> GetAsyncSteps()
{
this.discoveryClientChannelBase.InitializeAndFindAsync();
while (true)
{
this.currentEndpointDiscoveryMetadata = null;
yield return(DiscoveryChannelBuilderAsyncResult.GetDequeueStep());
Exception ex = this.CheckEndpointDiscoveryMetadataAndGetException();
if (ex != null)
{
this.CompleteOnce(ex);
yield break;
}
bool checkListenUris = (currentEndpointDiscoveryMetadata.ListenUris.Count > 0);
int index = 0;
do
{
if (checkListenUris)
{
this.CreateChannel(
this.currentEndpointDiscoveryMetadata.Address,
this.currentEndpointDiscoveryMetadata.ListenUris[index++]);
}
else
{
this.CreateChannel(
this.currentEndpointDiscoveryMetadata.Address,
this.currentEndpointDiscoveryMetadata.Address.Uri);
}
if (this.innerChannel != null)
{
yield return(DiscoveryChannelBuilderAsyncResult.GetOpenStep());
if (this.innerChannel != null)
{
// The channel was successfully opened
if (TD.InnerChannelOpenSucceededIsEnabled())
{
TD.InnerChannelOpenSucceeded(
this.currentEndpointDiscoveryMetadata.Address.ToString(),
GetVia(this.innerChannel).ToString());
}
yield break;
}
}
}while (index < this.currentEndpointDiscoveryMetadata.ListenUris.Count);
}
}
public TChannel BuildChannel(TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
this.InitializeAndFindAsync();
TChannel innerChannel = null;
bool completed = false;
EndpointDiscoveryMetadata currentEndpointDiscoveryMetadata = null;
try
{
do
{
try
{
currentEndpointDiscoveryMetadata = this.discoveredEndpoints.Dequeue(timeoutHelper.RemainingTime());
}
catch (TimeoutException te)
{
throw FxTrace.Exception.AsError(new TimeoutException(SR.DiscoveryClientChannelOpenTimeout(timeoutHelper.OriginalTimeout), te));
}
if (currentEndpointDiscoveryMetadata == null)
{
if (this.totalDiscoveredEndpoints < 1)
{
throw FxTrace.Exception.AsError(new EndpointNotFoundException(SR.DiscoveryClientChannelEndpointNotFound, this.exception));
}
else
{
throw FxTrace.Exception.AsError(new EndpointNotFoundException(SR.DiscoveryClientChannelCreationFailed(this.totalDiscoveredEndpoints), this.exception));
}
}
if (timeoutHelper.RemainingTime() == TimeSpan.Zero)
{
throw FxTrace.Exception.AsError(new TimeoutException(SR.DiscoveryClientChannelOpenTimeout(timeoutHelper.OriginalTimeout)));
}
if (currentEndpointDiscoveryMetadata.ListenUris.Count == 0)
{
completed = this.CreateChannel(
ref innerChannel,
currentEndpointDiscoveryMetadata.Address,
currentEndpointDiscoveryMetadata.Address.Uri,
timeoutHelper);
}
else
{
foreach (Uri listenUri in currentEndpointDiscoveryMetadata.ListenUris)
{
completed = this.CreateChannel(
ref innerChannel,
currentEndpointDiscoveryMetadata.Address,
listenUri,
timeoutHelper);
if (completed)
{
break;
}
}
}
}while (!completed);
}
finally
{
if (completed && TD.InnerChannelOpenSucceededIsEnabled())
{
TD.InnerChannelOpenSucceeded(
currentEndpointDiscoveryMetadata.Address.ToString(),
GetVia(innerChannel).ToString());
}
this.Cleanup(timeoutHelper.RemainingTime());
}
return(innerChannel);
}