我有一个使用发现的应用程序,它可以部署在同一台 PC 本地或远离它使用的服务。有没有办法通过 WCF 发现公开命名管道绑定(bind)?如果不是,我想我可以在发现服务后进行协商以确定最合适的绑定(bind)。
最佳答案
是的,可以这样做。但是由于地址将被列为“localhost”(net.pipe 唯一可能的地址),您可能需要进行某种测试来验证该服务是否与发现客户端在同一台机器上实际运行。
public class StackOverflow_7068743
{
[ServiceContract]
public interface ITest
{
[OperationContract]
string Echo(string text);
}
public class Service : ITest
{
public string Echo(string text)
{
return text + " (via " + OperationContext.Current.IncomingMessageHeaders.To + ")";
}
}
public static void Test()
{
string baseAddressHttp = "http://" + Environment.MachineName + ":8000/Service";
string baseAddressPipe = "net.pipe://localhost/Service";
ServiceHost host = new ServiceHost(typeof(Service), new Uri(baseAddressHttp), new Uri(baseAddressPipe));
host.Description.Behaviors.Add(new ServiceDiscoveryBehavior());
host.AddServiceEndpoint(new UdpDiscoveryEndpoint());
host.AddServiceEndpoint(typeof(ITest), new BasicHttpBinding(), "");
host.AddServiceEndpoint(typeof(ITest), new NetNamedPipeBinding(NetNamedPipeSecurityMode.None), "");
host.Open();
Console.WriteLine("Host opened");
DiscoveryClient discoveryClient = new DiscoveryClient(new UdpDiscoveryEndpoint());
FindResponse findResponse = discoveryClient.Find(new FindCriteria(typeof(ITest)));
Console.WriteLine(findResponse.Endpoints.Count);
EndpointAddress address = null;
Binding binding = null;
foreach (var endpoint in findResponse.Endpoints)
{
if (endpoint.Address.Uri.Scheme == Uri.UriSchemeHttp)
{
address = endpoint.Address;
binding = new BasicHttpBinding();
}
else if (endpoint.Address.Uri.Scheme == Uri.UriSchemeNetPipe)
{
address = endpoint.Address;
binding = new NetNamedPipeBinding(NetNamedPipeSecurityMode.None);
break; // this is the preferred
}
Console.WriteLine(endpoint.Address);
}
if (binding == null)
{
Console.WriteLine("No known bindings");
}
else
{
ChannelFactory<ITest> factory = new ChannelFactory<ITest>(binding, address);
ITest proxy = factory.CreateChannel();
Console.WriteLine(proxy.Echo("Hello"));
((IClientChannel)proxy).Close();
factory.Close();
}
Console.Write("Press ENTER to close the host");
Console.ReadLine();
host.Close();
}
}
关于c# - 是否可以使用 WCF 发现来公开使用命名管道的 WCF 端点?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/7068743/