public ValueTask <T?> GetProxyAsync <T>(ServiceRpcDescriptor descriptor, ServiceActivationOptions options, CancellationToken cancellationToken) where T : class
{
var pipePair = FullDuplexStream.CreatePipePair();
var clientConnection = descriptor
.WithTraceSource(_services.ServiceProvider.TraceSource)
.ConstructRpcConnection(pipePair.Item2);
Contract.ThrowIfFalse(options.ClientRpcTarget is null == descriptor.ClientInterface is null);
if (descriptor.ClientInterface != null)
{
Contract.ThrowIfNull(options.ClientRpcTarget);
clientConnection.AddLocalRpcTarget(options.ClientRpcTarget);
}
// Clear RPC target so that the server connection is forced to create a new proxy for the callback
// instead of just invoking the callback object directly (this emulates the product that does
// not serialize the callback object over).
options.ClientRpcTarget = null;
// Creates service instance and connects it to the pipe.
// We don't need to store the instance anywhere.
_ = _services.CreateBrokeredService(descriptor, pipePair.Item1, options);
clientConnection.StartListening();
return(ValueTaskFactory.FromResult((T?)clientConnection.ConstructRpcClient <T>()));
}
