代碼如下： using (ServiceHost                 DuplexCommonHost = new ServiceHost(typeof(DuplexCommonService)),                 OneWayCommonHost = new ServiceHost(typeof(OneWayCommonService)))            {                DuplexCommonHost.Opened += delegate { Console.Write("DuplexCommon service has been opened!"); };                DuplexCommonHost.Open();                OneWayCommonHost.Opened += delegate { Console.Write("OneWayCommon service has been opened!"); };                OneWayCommonHost.Open();                Console.Read();               }結果客戶端報一下錯誤：沒有終結點在偵聽可以接受消息的 http://localhost:8080/OneWayCommon屏蔽紅色部分代碼，客戶端正常運行。