public IAsyncResult BeginFindServers(
string endpointUrl,
string endpointTransportProfileUri,
string actualEndpointUrl,
IList <string> preferredLocales,
IList <string> serverUris,
AsyncCallback callback,
object callbackData)
{
DiscoveryClient client = CreateClient(endpointUrl, endpointTransportProfileUri);
FindServersData data = new FindServersData(callback, callbackData, client.OperationTimeout)
{
DiscoveryClient = client
};
data.InnerResult = client.BeginFindServers(
null,
(actualEndpointUrl) ?? endpointUrl,
new StringCollection((preferredLocales) ?? PreferredLocales),
(serverUris != null) ? new StringCollection(serverUris) : null,
OnFindServersComplete,
data);
return(data);
}
private void OnFindServersComplete(IAsyncResult result)
{
FindServersData data = result.AsyncState as FindServersData;
try
{
ApplicationDescriptionCollection servers = null;
data.DiscoveryClient.EndFindServers(result, out servers);
data.Servers = servers;
data.OperationCompleted();
}
catch (Exception e)
{
data.Exception = e;
data.OperationCompleted();
}
}
public List <ApplicationDescription> EndFindServers(IAsyncResult result)
{
FindServersData data = result as FindServersData;
if (data == null)
{
throw new ArgumentException("Did not pass the correct IAsyncResult to end method.", "success");
}
try
{
if (!data.WaitForComplete())
{
throw new TimeoutException();
}
return(data.Servers);
}
finally
{
data.DiscoveryClient.Close();
}
}
