WCF常见问题之端口共享

当两个WCF应用程序想共享一个端口提供服务时，你会发现后一个启动的服务运行不了，会提示已经有应用程序在监听，如：

应用一

 

ServiceHost host = new ServiceHost(typeof(WCFPortSharing.AddService)); 
            NetTcpBinding binding = new NetTcpBinding(); 
            host.AddServiceEndpoint(typeof(WCFPortSharing.IAddService), binding, "net.tcp://127.0.0.1:4503/addService"); 
            host.Open();

 

应用二

 

ServiceHost host1 = new ServiceHost(typeof(WCFPortSharing.SubService)); 
            NetTcpBinding binding1 = new NetTcpBinding(); 
            host1.AddServiceEndpoint(typeof(WCFPortSharing.ISubService), binding1, "net.tcp://127.0.0.1:4503/subService"); 
            host1.Open();

 

如果想不冲突，需要开启WCF的端口共享，并启动一个服务Net.Tcp Port Sharing Service，此服务默认是禁止运行的，手动开启后，将服务配置加上

 

binding.PortSharingEnabled = true;

 

这样：

ServiceHost host = new ServiceHost(typeof(WCFPortSharing.AddService)); 
            NetTcpBinding binding = new NetTcpBinding(); 
            binding.PortSharingEnabled = true; 
            host.AddServiceEndpoint(typeof(WCFPortSharing.IAddService), binding, "net.tcp://127.0.0.1:4503/addService"); 
            host.Open();