Ошибки на IIS buffer space?

Общение с помощью xml, большого размера. ответ передается с сервера на сервер обработчик. Получаю следующую ошибку:

System.IO.IOException: Unable to read data from the transport connection: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full. ---> System.Net.Sockets.SocketException: An operation on a socket could not be performed because the system lacked sufficient buffer space or because a queue was full