I have looked through the docs on wcf on azure service fabric but it seems the only examples show how to expose it to other fabric services. I want to expose a wcf endpoint like I would a rest end point, so I can map it to a public IP address.
Any ideas?
I had to solve this exact scenario.
You don't need to return a listener at all. You need to open an endpoint in the 'Service Manifest.xml'. You bind the ssl cert here etc (I'll assume that you know this part).
<Endpoint Name="Test.WcfTypeEndpoint" Protocol="https" Type="Input" CertificateRef="MySSL" Port="44330" />
You can now open Service Hosts and it will route requests to them. Use a strong wildcard in the binding when opening the service - otherwise it won't resolve on the node that it ends up on.
public class InternalBinding : Binding
{
private readonly HttpsTransportBindingElement _transport;
public InternalBinding()
{
_transport = new HttpTransportBindingElement
{
HostNameComparisonMode = HostNameComparisonMode.StrongWildcard,
// etc
}
}
}
Related
I have a service hosted in a Service Fabric cluster in Azure (not locally) and I'm trying to call a method in it using a console application on my local machine. Using WCF for communication, I have a HTTPS endpoint set up in my application on a specific port, and have configured load balancing rules for the port in the Azure portal. The cluster has 6 nodes and the application is the only one deployed on the cluster.
Have followed the ServiceFabric.WcfCalc on GitHub (link), which works on a local cluster using HTTP endpoints, but can't call a method on the service using HTTPS endpoints once it has been deployed. What do I need to do to get it working? Have tried following the example here but don't know how to configure this for HTTPS with a service on multiple nodes for a console application to access.
Thanks in advance.
EDIT Here's my client code which I am using to call the service method. I pass the fabric:/ URI into the constructor here.
public class Client : ServicePartitionClient<WcfCommunicationClient<IServiceInterface>>, IServiceInterface
{
private static ICommunicationClientFactory<WcfCommunicationClient<IServiceInterface>> communicationClientFactory;
static Client()
{
communicationClientFactory = new WcfCommunicationClientFactory<IServiceInterface>(
clientBinding: new BasicHttpBinding(BasicHttpSecurityMode.Transport));
}
public Client(Uri serviceUri)
: this(serviceUri, ServicePartitionKey.Singleton)
{ }
public Client(
Uri serviceUri,
ServicePartitionKey partitionKey)
: base(
communicationClientFactory,
serviceUri,
partitionKey)
{ }
public Task<bool> ServiceMethod(DataClass data)
{
try
{
//It hangs here
return this.InvokeWithRetry((c) => c.Channel.ServiceMethod(data));
}
catch (Exception)
{
throw;
}
}
}
When debugging my console application on my local machine, the application hangs on the InvokeWithRetry call which calls the method in my service in Service Fabric. The application does not throw any exceptions and does not return to the debugger in Visual Studio.
Make sure you run every service instance /replica with a unique url.
Make sure you call the WebHttpBinding constructor using WebHttpSecurityMode.Transport.
Make sure you register the url using the same port number (443 likely) as in you service manifest endpoint declaration.
Make sure the endpoint is configured as HTTPS.
The warning you see in Service Fabric is telling you that there is already another service registered to listen on port 443 on your nodes. This means that Service Fabric fails to spin up your service (since it throws an exception internally when it is trying to register the URL with http.sys). You can change the port for your service to something else that will not conflict with the existing service, e.g.:
<Resources>
<Endpoint Name="CalculatorEndpoint" Protocol="https" Type="Input" Port="44330" />
</Endpoints>
If you log in to Service Fabric Explorer on https://{cluster_name}.{region}.cloudapp.azure.com:19080 you should be able to see what other applications and services are running there. If you expand services all the way down to node you should be able to see the registered endpoints, including ports, for existing services.
Bonus
You can query the cluster using FabricClient for all registered endpoints
var fabricClient = new FabricClient();
var applicationList = fabricClient.QueryManager.GetApplicationListAsync().GetAwaiter().GetResult();
foreach (var application in applicationList)
{
var serviceList = fabricClient.QueryManager.GetServiceListAsync(application.ApplicationName).GetAwaiter().GetResult();
foreach (var service in serviceList)
{
var partitionListAsync = fabricClient.QueryManager.GetPartitionListAsync(service.ServiceName).GetAwaiter().GetResult();
foreach (var partition in partitionListAsync)
{
var replicas = fabricClient.QueryManager.GetReplicaListAsync(partition.PartitionInformation.Id).GetAwaiter().GetResult();
foreach (var replica in replicas)
{
if (!string.IsNullOrWhiteSpace(replica.ReplicaAddress))
{
var replicaAddress = JObject.Parse(replica.ReplicaAddress);
foreach (var endpoint in replicaAddress["Endpoints"])
{
var endpointAddress = endpoint.First().Value<string>();
Console.WriteLine($"{service.ServiceName} {endpointAddress} {endpointAddress}");
}
}}}}}
Just run that with the proper FabricClient credentials (if it is a secured cluster) and you should see it listing all endpoints for all services there. That should help you find the one that has an endpoint for :443
I'm new to BizTalk and WCF services and am trying to figure out how to use a WCF service to deliver XML data to Biztalk. I think I'm close but when I call the WCF service operation, the operation executes successfully but does not appear to generate any kind of a message in Biztalk. Am I wrong in assuming that simply calling an operation is enough to trigger a message to BizTalk?
Below is my code and some details about my BizTalk configuration:
WCF service:
public interface IService1
{
[OperationContract, XmlSerializerFormat]
XmlDocument GetXMLDocument(string sourceXML);
}
public class Service1 : IService1
{
public XmlDocument GetXMLDocument(string sourceXML)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(sourceXML);
return doc;
}
}
Calling application (button click calls the service):
protected void Button2_Click(object sender, EventArgs e)
{
XmlDocument doc = new XmlDocument();
doc.AppendChild(doc.CreateNode(XmlNodeType.Element, "Patients", "test"));
SendDoc(doc);
}
protected void SendDoc(XmlDocument doc)
{
//use a Service Client Object to call the service
objServiceClientobjService.GetXMLDocument(doc.OuterXml);
}
BizTalk configuration:
Receive Port:
Port type: One-Way
Receive Location:
Type: WCF-Custom with basicHTTP binding
Endpoint Address is the same as the IIS hosted WCF Service
Receive Pipeline Type: XMLReceive
Your implementation is not correct. There is no link between your WCF service and BizTalk. If you want to receive xml in BizTalk then you need to expose either an Orchestration or Xml Schema as WCF service using BizTalk WCF Web Service Publishing Wizard. This gets installed with BizTalk. Please see link for more details: msdn link
The solution I always use, is to expose an endpoint. Take a look at this example:
I would like to expose discovery endpoints (both TCP and UDP) for my Data Services v3 and enable services to be discoverable from the client and discover them in another application. The main point in the discovery is to get the service endpoint address at the client.
I have tried to adapt the samples that Microsoft have provided for WCF Discovery, but so far I failed to achieve my goal.
I have created a custom Data Service Host Factory on server side:
public class CustomDataServiceHostFactory : System.Data.Services.DataServiceHostFactory
{
protected override System.ServiceModel.ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
{
var serviceHost = base.CreateServiceHost(serviceType, baseAddresses);
EndpointDiscoveryBehavior endpointDiscoveryBehavior = new EndpointDiscoveryBehavior();
// Create XML metadata to add to the service endpoint
XElement endpointMetadata = new XElement(
"Root",
new XElement("Information", "This endpoint is Data Service v3!"),
new XElement("Time", System.DateTime.Now.ToString("MM/dd/yyyy HH:mm")));
// Add the XML metadata to the endpoint discovery behavior.
endpointDiscoveryBehavior.Extensions.Add(endpointMetadata);
//may be this is not the safest way to set the behaviour
foreach (var endpoint in serviceHost.Description.Endpoints)
{
endpoint.Behaviors.Add(endpointDiscoveryBehavior);
}
// Make the service discoverable over UDP multicast
serviceHost.Description.Behaviors.Add(new ServiceDiscoveryBehavior());
serviceHost.AddServiceEndpoint(new UdpDiscoveryEndpoint());
return serviceHost;
}
}
On the client side I have tried the following code:
DiscoveryClient discoveryClient = new DiscoveryClient(new UdpDiscoveryEndpoint());
// Find service endpoints
// ServiceReference.DataModel is the generated class for the Data Service client proxy
FindCriteria findCriteria = new FindCriteria(typeof(ServiceReference.DataModel));
findCriteria.Duration = TimeSpan.FromSeconds(30);
FindResponse findResponse = discoveryClient.Find(findCriteria);
// Check to see if endpoints were found & print the XML metadata in them.
if (findResponse.Endpoints.Count > 0)
{
foreach (XElement xElement in findResponse.Endpoints[0].Extensions)
{
Console.WriteLine("Printing Metadata from ServiceEndpoint:");
Console.WriteLine("Endpoint Information: " + xElement.Element("Information").Value);
Console.WriteLine("Endpoint Started at Time: " + xElement.Element("Time").Value);
Console.WriteLine();
}
}
Unfortunately this does not work. I get InvalidOperationException:
Attempted to get contract type for DataModel, but that type is
not a ServiceContract, nor does it inherit a ServiceContract.
If I am heading in the right direction I need a way to express the type for the service contract for the discovery. Too bad I am not sure that it will even work like the normal WCF Discovery...
Please share your ideas or even better - working solutions.
I think exception message is clear enough.
For service discovery You try to use type of your data model, while You must use type of your WCF service implementation - this is different things.
Basically DataServicesV3 service adapter uses your data model and exposes it as a WCF service with it's own service contract.
Look at DataServiceV3 type declaration see that it is implementing some interface, i just don't remember name, in this interface declaration you will find [ServiceContract] and [ServiceOperation] attributes. This is Your SERVICE CONTRACT for all ancestors of DataServiceV3. They use THE SAME contract. Here stands another problem I haven't managed to solve yet - how to make WS-Discovery work with DataServices if they share same contract. You'd better dig in this way.
WCF (winodws service hosting) service uses set of protocols and bindings: http, https, net.tcp, net.pipe.
It uses config file settings.
I want to build demo version of the service.
This demo will use only net.pipe protocol.
How I can restrict service to use only this one?
I can do changes in code , but how and where?
ServiceHost owns collection of ChannelDispatchers in ChannelDispatchers property. You can use ChannelDispatcher.BindingName to figure out name of binding used in your service.
ServiceHost host = new ServiceHost(typeof(SomeService), baseAddress))
//configure service endpoints here
host.Open();
#if DEMO_MODE
foreach (ChannelDispatcher dispatcher in host.ChannelDispatchers)
{
//binding name includes namespace. Example - http://tempuri.org/:NetNamedPipeBinding
var bindingName = dispatcher.BindingName;
if (!(bindingName.EndsWith("NetNamedPipeBinding") || bindingName.EndsWith("MetadataExchangeHttpBinding")))
throw new ApplicationException("Only netNamedPipeBinding is supported in demo mode");
}
#endif
I have a WCF REST web service that is hosted via a service route in global.asax which looks like this;
protected override void RegisterRoutes(System.Web.Routing.RouteCollection routeTable)
{
routeTable.Add(new ServiceRoute("", new WebServiceHostFactory(),
typeof(UserService)));
}
I am wondering whether or not it is possible to also host another web service (which is a WCF Data Service) in the same application.
protected override void RegisterRoutes(System.Web.Routing.RouteCollection routeTable)
{
routeTable.Add(new ServiceRoute("", new WebServiceHostFactory(),
typeof(UserService)));
routeTable.Add(new ServiceRoute("OData", new DataServiceHostFactory(),
typeof(UserDataService)));
}
Attempting to navigate in my browser to http://localhost:port/ brings up the standard REST service fine whilst navigating to http://localhost:port/OData brings up the 'end point not found page'.
The reason for this is that I have legacy code in the REST service I need to keep around but also want to expose some pure data via the data service.
It turns out this was exceedingly simple and I completely overlooked the obvious.
It appears when you are hosting multiple service routes you cannot have a default/empty route prefix on any of the routes as you can with a single route. Note this was what I had in my question above for the UserService route.
Thus providing a route prefix for both service routes allows both services to be hosted within the same global.asax.
Providing code for completeness...
protected override void RegisterRoutes(System.Web.Routing.RouteCollection routeTable)
{
routeTable.Add(new ServiceRoute("Rest", new WebServiceHostFactory(),
typeof(UserService)));
routeTable.Add(new ServiceRoute("OData", new DataServiceHostFactory(),
typeof(UserDataService)));
}