如果出现故障，如何自动重新建立双工通道？

I'm developing a client/server application in .Net 3.5 using WCF. Basically, a long running client service (on several machines) establish a duplex connection to the server over a netTcpBinding. The server then uses the callback contract of the client to perform certain on-demand oparations, to which the client responds in an asynchronous fashion (fairly standard stuff I think). I subclass the DuplexClientBase class to handle most of the communication.I'm developing a client/server application in .