I have been working with this solution where A client application is supposed to access WCF service via Relay.
I have followed this tutorial and was able to access WCF service hosted in console app with client console app.
What I want to achieve is, To access WCF service hosted in local machine via a function app.
So I migrated the code which i did in client console app as shown here to the azure function app.
The client console app had a config file as shown here
I have 2 doubts
I have two doubts.
1) I can not understand how to define endpoint in azure function app which was defined in App.Config file in case of console app as below.
<client>
<endpoint name="RelayEndpoint"
contract="Microsoft.ServiceBus.Samples.IEchoContract"
binding="netTcpRelayBinding"/>
</client>
2) Is there any way to dynamically define endpoint right in the code of function app?
log.Info("C# HTTP trigger function processed a request.");
ServiceBusEnvironment.SystemConnectivity.Mode = ConnectivityMode.AutoDetect;
string serviceNamespace = "MyTestRelay";
string sasKey = "mpQKrfJ6L4Ftdsds2v6Leg3X0e9+Q8MOfjxwghj7xk2qSA=";
Uri serviceUri = ServiceBusEnvironment.CreateServiceUri("sb", serviceNamespace, "EchoService");
TransportClientEndpointBehavior sasCredential = new TransportClientEndpointBehavior();
sasCredential.TokenProvider = TokenProvider.CreateSharedAccessSignatureTokenProvider("RootManageSharedAccessKey", sasKey);
DynamicEndpoint dynamicEndpoint = new DynamicEndpoint(ContractDescription.GetContract(typeof(IEchoContract)), new WSHttpBinding() );
//I AM GETTING ERROR IN Below Line
ChannelFactory<IEchoChannel> channelFactory = new ChannelFactory<IEchoChannel>("RelayEndpoint", new EndpointAddress(serviceUri));
channelFactory.Endpoint.Behaviors.Add(sasCredential);
IEchoChannel channel = channelFactory.CreateChannel();
channel.Open();
Console.WriteLine("Enter text to echo (or [Enter] to exit):");
string input = Console.ReadLine();
while (input != String.Empty)
{
try
{
Console.WriteLine("Server echoed: {0}", channel.Echo(input));
}
catch (Exception e)
{
Console.WriteLine("Error: " + e.Message);
}
input = Console.ReadLine();
}
channel.Close();
channelFactory.Close();
Can anyone suggest how to work with this?
The syntax for creating bindings in code maps to the XML in app.config and you can use like so:
var endpoint = new EndpointAddress(serviceUri);
var binding = new NetTcpRelayBinding()
{
// Example properties that might be in your app.config
ReceiveTimeout = TimeSpan.FromMinutes(2),
SendTimeout = TimeSpan.FromMinutes(2),
};
var channelFactory = new ChannelFactory<IEchoChannel>(binding, endpoint);
Related
Maybe I'm not searching with the right terms because this seems pretty simple. I'm just looking for a way to list the endpoints of a WCF service that has it's endpoints created during runtime the same way WCF Test Client Does.
Specify URL
Get MetaData and Endpoints
This is how I add the endpoints during runtime
string SetInstrumentsURL = serviceUrl + "SetInstruments/";
string SetInstrumentsPipe = "net.pipe://localhost/TestService/SetInstruments/";
ServiceHost SetInstrumentsHost = null;
var SetInstruments = InstrumentLoader.Factory.GetIEnumerableOf<ISetInstrument>();
if (SetInstruments.Count() > 0)
{
Uri SetInstrumentsURI = new Uri(SetInstrumentsURL);
Uri SetInstrumentsPipedURI = new Uri(SetInstrumentsPipe);
NetTcpBinding netTcpBindingSetInstruments = new NetTcpBinding();
NetNamedPipeBinding NamedPipeBindingSetInstruments = new NetNamedPipeBinding(NetNamedPipeSecurityMode.None);
SetInstrumentsHost = new ServiceHost(typeof(TeraSetInstrumentService), new Uri[] { SetInstrumentsURI, SetInstrumentsPipedURI });
ServiceMetadataBehavior SetInstrumentServiceMetadataBehavior = new ServiceMetadataBehavior();
SetInstrumentsHost.Description.Behaviors.Add(SetInstrumentServiceMetadataBehavior);
SetInstrumentsHost.AddServiceEndpoint(typeof(IMetadataExchange),
MetadataExchangeBindings.CreateMexTcpBinding(), "mex");
SetInstrumentsHost.AddServiceEndpoint(typeof(IMetadataExchange),
MetadataExchangeBindings.CreateMexNamedPipeBinding(), "mex");
foreach (var setter in SetInstruments)
{
SetInstrumentsHost.AddServiceEndpoint(typeof(ISetInstrumentService), netTcpBindingSetInstruments, SetInstrumentsURL + setter.Name).Name = "Set_" + setter.Name.Replace(" ", "_");
SetInstrumentsHost.AddServiceEndpoint(typeof(ISetInstrumentService), NamedPipeBindingSetInstruments, SetInstrumentsPipe + setter.Name).Name = "Set_" + setter.Name.Replace(" ", "_");
}
SetInstrumentsHost.Open();
}
What functions can I use from the client side to access those same endpoints as WCF Test Client? I know how to connect to those endpoints if I already have the Endpoint's URL but I would like to have a list of the endpoints so I can create a drop down list choose from that changes depending on what host you connect to.
Adding a service reference through Visual Studio doesn't list all of the endpoints because the are not created yet. Is the a library I can use to get them at run time like WCF Test Client does.
Provided that we have the service metadata URI, we could use MetadataExchangeClientMode and MetadataResolver class which is provided in the System.ServiceModel.Description namespace to retrieve and process the metadata.
https://learn.microsoft.com/en-us/dotnet/framework/wcf/feature-details/how-to-use-metadataresolver-to-obtain-binding-metadata-dynamically
https://learn.microsoft.com/en-us/dotnet/framework/wcf/feature-details/how-to-use-metadataexchangeclient-to-retrieve-metadata
I have made a simple example, wish it is useful to you.
class Program
{
static void Main(string[] args)
{
Uri uri = new Uri("http://10.157.13.69:3336/mex");
MetadataExchangeClient client = new MetadataExchangeClient(uri, MetadataExchangeClientMode.MetadataExchange);
MetadataSet metadata = client.GetMetadata();
WsdlImporter importer = new WsdlImporter(metadata);
ServiceEndpointCollection endpoints = importer.ImportAllEndpoints();
//ServiceEndpointCollection endpoints = MetadataResolver.Resolve(typeof(IService), uri, MetadataExchangeClientMode.MetadataExchange);
foreach (var item in endpoints)
{
Console.WriteLine(item.Address.Uri);
}
}
}
[ServiceContract]
public interface IService
{
[OperationContract]
string SayHello();
}
Result
Okay it was pretty easy to do, I just needed to use the MetadataExchangeClient to get the config. In the code all I had to do to get the MetaData Xml was this:
var meta = new System.ServiceModel.Description.MetadataExchangeClient(new Uri("net.tcp://10.0.2.124:9000/TeraService/SetInstruments/mex"), System.ServiceModel.Description.MetadataExchangeClientMode.MetadataExchange);
var data = meta.GetMetadata();
System.Xml.Serialization.XmlSerializer x = new System.Xml.Serialization.XmlSerializer(data.GetType());
TextWriter writer = new StreamWriter("xmlfile.xml");
x.Serialize(writer, data);
writer.Close();
I posted my answer in the wrong place. But Abraham Qian has a more elegant solution that I will test now.
I have my WCF in my service References and when I run my WCF at the same time as I run my WPF using visual studio run multi projects then it all works fine, however I am now connecting multiple clients and if they start at the same time before no data is entered then it works. If one starts enters data then the other starts then the entered data is wiped. I have tried having it so it will start by running a host from my WPF. Unfortunately I get an error saying httpGetEnabled needs to be false, if this is false then I cannot update my service reference as it says there is an access issue. The code I have used for trying to run the host is.
try
{
ServiceHost host;
Service1.Service1Client service = new Service1.Service1Client();
string baseAddress = "http://localhost:59849/Service1.svc";
host = new ServiceHost(typeof(Service1.Service1Client));
host.AddServiceEndpoint(typeof(Service1.IService1),new BasicHttpBinding(), baseAddress);
host.Open();
wcfHostId = wcf.generateId();
textBox5.Text = "" + wcfHostId;
button5.IsEnabled = false;
}
catch (Exception ex)
{
MessageBox.Show("Error = " + ex.Message);
}
Edit
So basically what I was saying is when I was self hosting a WPF and a new client connected it was wiping all the variables stored inside the service. And I was enquiring was it because of the way I was hosting the service?
The error was the way I was trying to discover the WCF and didn't add a discovery endpoint.
host.Description.Behaviors.Add(new ServiceDiscoveryBehavior());
host.AddServiceEndpoint(new UdpDiscoveryEndpoint());
needed to be added to the host part and the client code in the end was
var ep = "http://" + System.Net.Dns.GetHostName() + ":8732/DatabaseTransfer/Service1/";
var binding = new BasicHttpBinding();
binding.Security.Mode = BasicHttpSecurityMode.None;
binding.SendTimeout = new System.TimeSpan(0, 1, 30);
ChannelFactory<IService1> wcfFactory = new ChannelFactory<IService1>(binding, new EndpointAddress(ep));
IService1 wcf = wcfFactory.CreateChannel();
I need to develop a WCF Hosted in a console app WebService.
I made it work using the Mutual Certificate (service and client) method using SecurityMode.Message.
But now i need to change the Security Mode to SecurityMode.Transport and use the wsHttpBinding with SSL. I made this code to host the service but i cannot get the wsdl with the browser, or execute some webmethod in the console app client.
static void Main()
{
var httpsUri = new Uri("https://localhost:8089/HelloServer");
var binding = new WSHttpBinding();
binding.Security.Mode = SecurityMode.Transport;
binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Certificate;
var host = new ServiceHost(typeof(WcfFederationServer.HelloWorld), httpsUri);
host.AddServiceEndpoint(typeof(WcfFederationServer.IHelloWorld), binding, "", httpsUri);
var mex = new ServiceMetadataBehavior();
mex.HttpsGetEnabled = true;
host.Description.Behaviors.Add(mex);
// Open the service.
host.Open();
Console.WriteLine("Listening on {0}...", httpsUri);
Console.ReadLine();
// Close the service.
host.Close();
}
The service is up, but i cannot get nothing on the https://localhost:8089/HelloServer.
On fiddler the get request via browser shows me this message:
fiddler.network.https> HTTPS handshake to localhost failed. System.IO.IOException
What im missing here?
Thanks
EDIT:
The Console Application Client Code
static void Main()
{
try
{
var client = new HelloWorldHttps.HelloWorldClient();
client.ClientCredentials.ClientCertificate.SetCertificate(
StoreLocation.LocalMachine,
StoreName.TrustedPeople,
X509FindType.FindBySubjectName,
"www.client.com");
Console.WriteLine(client.GetData());
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
Console.ReadKey();
}
Getting this error:
Could not establish trust relationship for the SSL/TLS secure channel
When it comes to the service, you need to map the certificate to the specific port as described here
http://msdn.microsoft.com/en-us/library/ms733791(v=vs.110).aspx
As for the client, you need to skip the verification of certificate properties like valid date, the domain by relaxing the certificate acceptance policy. An easiest way would be to accept any certiticate
ServicePointManager.ServerCertificateValidationCallback = (a,b,c,d) => true
You can finetune the acceptance callback according to the docs to best fit your needs.
I am trying to consume a self-hosted WCF application using SSL and a custom authentication validator from within an integration test. So far I am able to self-host the service but I am not able to figure out how to consume it.
Here is the self-hosting code (it is not dependent on Web.Config, as far as I know):
[ClassInitialize]
public static void TestClassInitialize(TestContext testContext)
{
const string serviceAddress = "https://localhost/SelfHostedService";
Uri _svcEndpointUri = new Uri(serviceAddress);
var binding = new WSHttpBinding
{
Security =
{
Mode = SecurityMode.TransportWithMessageCredential,
Message = {ClientCredentialType = MessageCredentialType.UserName}
}
};
ServiceDebugBehavior debugBehavior = new ServiceDebugBehavior
{
IncludeExceptionDetailInFaults = true
};
MyServiceApi _api = new MyServiceApi();
ServiceHost _svcHost = new ServiceHost(_api, _svcEndpointUri);
_svcHost.Description.Behaviors.Remove<ServiceDebugBehavior>();
_svcHost.Description.Behaviors.Add(debugBehavior);
// Ensure that SSL certificate & authentication interceptor get used
ServiceCredentials credentials = new ServiceCredentials();
credentials.UserNameAuthentication.UserNamePasswordValidationMode = UserNamePasswordValidationMode.Custom;
credentials.UserNameAuthentication.CustomUserNamePasswordValidator = new MyCustomAuthenticationValidator();
credentials.ServiceCertificate.SetCertificate(StoreLocation.LocalMachine, StoreName.My, X509FindType.FindBySubjectName, "SubjectName");
_svcHost.Description.Behaviors.Remove<ServiceCredentials>();
_svcHost.Description.Behaviors.Add(credentials);
// Add IUbiquity and mex endpoints
Uri endpointAddress = new Uri(serviceAddress + "/UbiquityApi.svc");
_svcHost.AddServiceEndpoint(typeof (IUbiquityApi), binding, endpointAddress);
// Specify InstanceContextMode, which is required to self-host
var behavior = _svcHost.Description.Behaviors.Find<ServiceBehaviorAttribute>();
behavior.InstanceContextMode = InstanceContextMode.Single;
_svcHost.Open();
}
What I'd like to be able to do looks like this, but I have no idea how I'd go about accomplish this:
[TestMethod]
public void TestAuthentication(){
var api = _svcHost.MagicallyRetrieveServiceInstance();
api.Credentials = new MagicCredentials("my username", "my password");
Assert.AreEqual(3, api.AddNumbers(1,2));
// Also assert that I am authenticated
api.Credentials = new MagicCredentials("my username", "my password");
bool exceptionWasThrown = false;
try {
api.AddNumbers(1,2);
}
catch(NotLoggedInException l){ // or something
exceptionWasThrown = true;
}
Assert.IsTrue(exceptionWasThrown);
}
My ideal solution would allow me to retrieve the service contract from the service host, and allow me to set the credentials used for the service contract. I should only have to supply the credentials once to the service contract, and then I should be able to call methods directly, as if I were communicating over the wire (thus making this an integration test). How should I go about this?
To consume the web service, simply add the service as a service reference, and then use the service reference client.
Done right, this will take care of the bindings needed for authentication, effectively putting the WCF configurations under test.
I'm trying to build a C# SignalR app (console app on the server, winforms app on the client), and it works great (in Visual Studio) when both the client and server are on the same PC, but when I deploy the server and repoint the client to the server, I'm getting a "407 Proxy Authentication Required" exception when it tries to start.
This is my code...
var _connection = new HubConnection("http://www.redacted.com:8088/");
var _hub = _connection.CreateProxy("MyHub");
_connection.Start().ContinueWith(task =>
{
if (task.IsFaulted)
MessageBox.Show(string.Format("Could not connect - {0}", task.Exception.ToString()));
}).Wait();
I noticed that HubConnection has a Credentials property, and so I figured I'd try replacating some code I've used with WebServices when dealing with proxies (shown below, where I just make an HTTP request out and then pick up the proxy settings and credentials from that), but I get the same exception.
var _connection = new HubConnection("http://www.redacted.com:8088/");
var req = (HttpWebRequest)WebRequest.Create("http://www.google.com");
var proxy = new WebProxy(req.Proxy.GetProxy(req.RequestUri).AbsoluteUri) {UseDefaultCredentials = true};
_connection.Credentials = proxy.Credentials;
var _hub = _connection.CreateProxy("MyHub");
_connection.Start().ContinueWith(task =>
{
if (task.IsFaulted)
MessageBox.Show(string.Format("Could not connect - {0}", task.Exception.ToString()));
}).Wait();
This is required for some work I'm doing for a client where they want their local PCs to be able to receive messages from a remote system that's hosted outside the company.
Thanks!
Try to set the DefaultWebProxy:
WebProxy wproxy = new WebProxy("new proxy",true);
wproxy.Credentials = new NetworkCredential("user", "pass");
WebRequest.DefaultWebProxy = wproxy;