public IAsyncResult BeginFindServersOnNetwork(
string endpointUrl,
string endpointTransportProfileUri,
uint startingRecordId,
uint maxRecordsToReturn,
IList <string> serverCapabilityFilters,
AsyncCallback callback,
object callbackData)
{
DiscoveryClient client = CreateClient(endpointUrl, endpointTransportProfileUri);
FindServersOnNetworkData data = new FindServersOnNetworkData(callback, callbackData, client.OperationTimeout)
{
DiscoveryClient = client
};
data.InnerResult = client.BeginFindServersOnNetwork(
null,
startingRecordId,
maxRecordsToReturn,
(serverCapabilityFilters != null) ? new StringCollection(serverCapabilityFilters) : new StringCollection(),
OnFindServersOnNetworkComplete,
data);
return(data);
}
private void OnFindServersOnNetworkComplete(IAsyncResult result)
{
FindServersOnNetworkData data = result.AsyncState as FindServersOnNetworkData;
try
{
DateTime lastCounterResetTime;
ServerOnNetworkCollection servers = null;
data.DiscoveryClient.EndFindServersOnNetwork(result, out lastCounterResetTime, out servers);
data.LastCounterResetTime = lastCounterResetTime;
data.Servers = servers;
data.OperationCompleted();
}
catch (Exception e)
{
data.Exception = e;
data.OperationCompleted();
}
}
public List <ServerOnNetwork> EndFindServersOnNetwork(IAsyncResult result, out DateTime lastCounterResetTime)
{
FindServersOnNetworkData data = result as FindServersOnNetworkData;
if (data == null)
{
throw new ArgumentException("Did not pass the correct IAsyncResult to end method.", "success");
}
try
{
if (!data.WaitForComplete())
{
throw new TimeoutException();
}
lastCounterResetTime = data.LastCounterResetTime;
return(data.Servers);
}
finally
{
data.DiscoveryClient.Close();
}
}
