Sending a dictionary using WCF, WSBinding - c#

I am currently trying to create a webservice in a winform application using WCF, WShttpBinding. One of the methods returns a dictionary. The client side, an RTD Server will call this method to retrieve the dictionary.
For some reason, when the dictionary gets too large( 0.6MB +), a communication exception will be thrown. I have tried increasing the size of the following parameters both on the clientside and serverside, but it still willnot work. Can someone tell me what I am doing wrong? Thanks.
binding.MaxReceivedMessageSize
binding.MaxBufferPoolSize
binding.SendTimeout
binding.OpenTimeout
binding.ReceiveTimeout
binding.ReaderQuotas.MaxStringContentLength
binding.ReaderQuotas.MaxDepth
binding.ReaderQuotas.MaxBytesPerRead

Add a behavior configuration in your App.config files:
On the server:
<behaviors>
<serviceBehaviors>
<behavior name="MyServiceBehavior">
<dataContractSerializer maxItemsInObjectGraph="2147483647"/>
</behavior>
</serviceBehaviors>
</behaviors>
On the client:
<behaviors>
<endpointBehaviors>
<behavior name="MyClientBehavior">
<dataContractSerializer maxItemsInObjectGraph="2147483647"/>
</behavior>
</endpointBehaviors>
</behaviors>
Note that 2147483647 is the max value and maybe you don't need that much.
And don't forget to reference the behavior in your services and endpoints:
On your server (and on your client if it hosts some services):
<service name="SomeService" behaviorConfiguration="MyServiceBehavior">
<endpoint binding="WShttpBinding"
bindingConfiguration="MyBindingConf"
contract="SomeContract"/>
</service>
On your client:
<endpoint binding="WShttpBinding"
bindingConfiguration="MyBindingConf"
behaviorConfiguration="MyServiceBehavior"
contract="SomeContract"
name="SomeName" />

Related

Using REST GET in WCF as 2nd endpoint

I trying to add 2nd endpoint in existing WCF Application and my REST method doesn't work.
I created new Interface
[ServiceContract]
public interface IRestService
{
[OperationContract]
[WebGet(UriTemplate = "RestURI", RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)]
string SomeMethod();
}
And implemented it in existing service
public string SomeMethodImplementation()
{
//some logic
}
I'm trying to access this method using basicaddress/service/RestURI but getting 400 Bad Request response.
After that I added protocolMapping, 2nd endpoint and endpoint behavior to config file but it didn't help.
Right now my config file looks like this:
<system.serviceModel>
<protocolMapping>
<add scheme="http" binding="webHttpBinding"/>
</protocolMapping>
<behaviors>
<serviceBehaviors>
<behavior>
<!-- To avoid disclosing metadata information, set the values below to false before deployment -->
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="web">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
<services>
<service name="servicename">
<endpoint address="" binding="webHttpBinding" contract="IRestService" behaviorConfiguration="web"/>
<endpoint address="" binding="basicHttpBinding" contract="ISoapService"/>
</service>
</services>
<bindings>
<basicHttpBinding>
<binding maxBufferSize="2147483647" maxReceivedMessageSize="2147483647" receiveTimeout="00:10:00" sendTimeout="00:10:00">
<readerQuotas maxDepth="32" maxStringContentLength="2147483647" maxArrayLength="16348" maxBytesPerRead="4096" maxNameTableCharCount="16384"/>
</binding>
</basicHttpBinding>
</bindings>
I'm not getting any 400 anymore but instead of that 'cannot be processed at the receiver, due to an AddressFilter mismatch at the EndpointDispatcher.' error appeared. Also after adding protocolMapping, my soap methods have disappeared when I open wsdl in browser. Without it my rest method can be seen in the list like this:
<wsdl:port name="BasicHttpBinding_IRestService" binding="i0:BasicHttpBinding_IRestService">
After that I added AddressFilterMode = AddressFilterMode.Any) in attributes of my Service but it doesn't help.
I found a lot of answers here but somehow not a single one help me to resolve this problem.
What did I miss?
I found the solution after I installed WCF for visual studio. All this time I had wrong namespaces in my web.config and had no idea but VS marked it after installing module. I added right namespace and problem went away. I really suggest to install WCF in VS.
The issue boils down to the fact that we fail to host the service in Restful style.
Ordinarily, there are two ways to configure the Restful style service created by Webhttpbinding.
1.Using the service section to configure the interface and implementation.
<services>
<service name="WcfService3.Service1">
<endpoint address="" binding="webHttpBinding" contract="WcfService3.IService1" behaviorConfiguration="rest"></endpoint>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior>
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="rest">
<webHttp />
</behavior>
</endpointBehaviors>
</behaviors>
There are two points we should pay attention to. In the service section, we are supposed to use the corresponding interface and implementation.
<service name="WcfService3.Service1">
<endpoint address="" binding="webHttpBinding" contract="WcfService3.IService1"
Adding a webhttp endpoint behavior also is essential then apply it by using Behaviorconfiguration property.
behaviorConfiguration="mybinding"
In the latest feature, we could create a WCF Restful style service with protocol mapping.
<endpointBehaviors>
<behavior>
<webHttp />
</behavior>
</endpointBehaviors>
</behaviors>
<protocolMapping>
<add binding="webHttpBinding" scheme="http"/>
It should be noted that we need to add an endpoint behavior without a name.
Based on your configuration, since you have multiple interfaces I suggest you remove the service section and host the service with a protocol mapping feature.
1. Remove service section in the configuration.
2. Remove the name of the endpoint behavior.
<system.serviceModel>
<protocolMapping>
<add scheme="http" binding="webHttpBinding"/>
</protocolMapping>
<behaviors>
<serviceBehaviors>
<behavior>
<!-- To avoid disclosing metadata information, set the values below to false before deployment -->
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior>
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
Then we could access the service by the below Uri.
basicaddress/service.svc/RestURI
Feel free to let me know if there is anything I can help with.

WCF / wsHttpBinding / Message Security - BadTokenRequest

So got an older WCF service / client I'm working on. Added a new (static) logging system to it, actually and now doing some load testing.
Getting some really annoying sporadic issues now - claiming "Secure channel cannot be opened because security negotiation with the remote endpoint has failed". I noticed I get a CommunicationException with a fault name of Sender and subcode of BadContextToken.
Weird thing is, I'll get 2-4 correct responses, then a flurry of these exceptions, then start getting good responses again.
This is my first real foray into WCF, and not loving it so far :)
Service web.config:
<system.serviceModel>
<bindings>
<wsHttpBinding>
<security mode="Message">
<message clientCredentialType="UserName" />
</security>
</wsHttpBinding>
</bindings>
<services>
<service behaviorConfiguration="ServiceBehavior" name="MyNamespace.MyService">
<endpoint address="" binding="wsHttpBinding" contract="MyNamespace.IMyService" bindingConfiguration="wsMessage">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="ServiceBehavior">
<serviceMetadata httpGetEnabled="false" />
<serviceCredentials>
<serviceCertificate findValue="MyValue" storeLocation="LocalMachine" storeName="My" x509FindType="FindBySubjectName" />
<userNameAuthentication userNamePasswordValidationMode="Custom" customUserNamePasswordValidatorType="MyNamespace.UserNamePassValidator, MyNamespace" />
</serviceCredentials>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
And on the client side, the client is instantiated as such:
var binding = new WSHttpBinding();
binding.Name = "WSHttpBinding_IMyService";
binding.Security.Mode = SecurityMode.Message;
binding.Security.Message.ClientCredentialType = MessageCredentialType.UserName;
var client = new MyService(binding, "http://myserver:8080/myapp/service.svc");
var endpointIdentity = new DnsEndpointIdentity("MyValue"); // Match the certificate name used by the server
client.Endpoint.Address = new EndpointAddress(new Uri("http://myserver:8080/myapp/service.svc"), endpointIdentity, client.Endpoint.Address.Headers);
var creds = client.ClientCredentials;
creds.ServiceCertificate.Authentication.CertificateValidationMode = X509CertificateValidationMode.None;
creds.UserName.UserName = "myuser";
creds.UserName.Password = "mypassword";
string retVal = client.SendRequest(); // SendRequest == one of the methods on my IMyService, returns a string. This is also where I sporadically see my error when load testing.
I would appreciate any pointers to help me out with this WCF setup!
These might be useful additions to your web.config:
<behaviors>
<serviceBehaviors>
<behavior name="CalculatorServiceBehavior">
<serviceDebug includeExceptionDetailInFaults="False" />
<serviceMetadata httpGetEnabled="True"/>
<serviceThrottling maxConcurrentCalls="20" maxConcurrentInstances="100"/>
</behavior>
</serviceBehaviors>
</behaviors>
<binding name="basicHttp" allowCookies="true" maxReceivedMessageSize="1048576" maxBufferSize="1048576" maxBufferPoolSize="1048576">
<readerQuotas maxDepth="32" maxArrayLength="1048576" maxStringContentLength="1048576"/>
</binding>
Usually this kind of "random" behaviour might depend on:
Timeouts (probably not your case, since you'd get a different exception)
Too many connections: if you client opens too many connections (and "forgets" to close them), you'll exceed the default allowed maximum (depending on context, it might be 10 connections).
You can act on this if you alter your web.config, editing maxConcurrentCalls and maxConcurrentInstances
Perhaps those errors are not random, but specific to some message; if so, that might be due to its size (i.e. it's too large): again, alter your web.config setting maxReceivedMessageSize, maxBufferSize, maxBufferPoolSize and readerQuotas
Of course you will get more info if you turn on WCF tracing.

There was no channel actively listening

maybe you can help me set up my WCF service.
First, here is my config file:
<system.serviceModel>
<serviceHostingEnvironment multipleSiteBindingsEnabled="true" />
<bindings />
<services>
<service name="AuthenticatorService.Authenticator">
<endpoint address="auth" binding="basicHttpBinding" bindingConfiguration=""
name="AuthEndpoint" contract="AuthInterface.IAuthenticator" />
<endpoint address="mex" binding="mexHttpBinding" name="MetadataEndpoint"
contract="IMetadataExchange" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior>
<serviceMetadata httpGetEnabled="True" />
<serviceDebug includeExceptionDetailInFaults="True" />
</behavior>
</serviceBehaviors>
</behaviors>
And this is how I call my service from c#:
//This creates a link to the WCF service using basicHttpBingind
httpFactory = new ChannelFactory<IAuthenticator>(new BasicHttpBinding(), new EndpointAddress("http://myUrl/auth.svc"));
httpProxy = httpFactory.CreateChannel();
It worked fine when I was doing this on localhost but now it keeps telling me no endpoint was found.
Also, the server generated the following error:
System.ServiceModel.EndpointNotFoundException: There was no channel actively listening at 'http://myURL/auth.svc/$metadata'. This is often caused by an incorrect address URI. Ensure that the address to which the message is sent matches an address on which a service is listening.
Im really confused, I have no idea why this is happening. Do I need to create another service file for the metadata exchange?
Do I need to set a baseAddress?
Thanks
How did you deploy the service? I assume the service is running in IIS on your box - did you try hitting the service URL (http://myUrl/auth.svc) in a browser to see if it is indeed up?

How do I programatically assign WCF ClientCredentials ServiceCertificate property?

I have a WCF service being hosted over https with a self-signed certificate. I'm having trouble programatically creating the binding: specifically the portion of the endpoint behavior.
My Service config looks like this:
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior name="">
<serviceMetadata httpsGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false" />
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="DisableServiceCertificateValidation">
<clientCredentials>
<serviceCertificate>
<authentication certificateValidationMode="None"
revocationMode="NoCheck" />
</serviceCertificate>
</clientCredentials>
</behavior>
</endpointBehaviors>
</behaviors>
<bindings>
<customBinding>
<binding name="ContactEmail.Web.EmailService.customBinding0">
<binaryMessageEncoding />
<httpsTransport/>
</binding>
</customBinding>
</bindings>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" />
<services>
<service name="ContactEmail.Web.EmailService">
<endpoint address="https://xxxxxxxxxxxxxx/EmailService/EmailService.svc" binding="customBinding" bindingConfiguration="ContactEmail.Web.EmailService.customBinding0" contract="ContactEmail.Web.EmailService" behaviorConfiguration="DisableServiceCertificateValidation" />
<endpoint address="mex" binding="mexHttpsBinding" contract="IMetadataExchange" />
</service>
</services>
</system.serviceModel>
And when I use the "Add Service Reference" feature, the generated client works as expected. Given that I call set up a Cert Validation Callback like this:
System.Net.ServicePointManager.ServerCertificateValidationCallback = ((sender, certificate, chain, sslPolicyErrors) => true);
However, rather than feed the service configuration through a config file on the client, I need to set it programmatically, because the call will be part of a commonly shared library. So, I'm trying to do this by providing my own parameters to the client constructor like:
var myClient = new EmailServiceClient(GetBinding(), new EndpointAddress(Strings.EmailServiceEndpointAddress));
In GetBinding(), I create CustomBinding with BindingElements like HttpsTransportBindingElement, BinaryMessageEncodingBindingElement and SecurityBindingElement.CreateSecureConversationBindingElement(SecurityBindingElement.CreateUserNameOverTransportBindingElement()).
Do you know how I can specify things like certificateValidationMode="None" and revocationMode="NoCheck" or if I'm doing anything wrong?
SecureConversation is implementation of WS-SecureConversation => advanced message level security where special security token is created during first call to the service (authenticated by the message security mode passed as parameter to the binding element creation) and this token is used to secure subsequent messages. This security also forms something know as security context or security session.
Your current binding in config file is not using SecureConversation so your binding defined in code is not compatible with your service.
You should have a Credentials property (of type ClientCredentials) (http://msdn.microsoft.com/en-us/library/ms733836.aspx) on your ClientBase (EmailServiceClient)...and that should have a ServiceCertificate property:
http://msdn.microsoft.com/en-us/library/system.servicemodel.description.clientcredentials.servicecertificate.aspx

Error: Cannot obtain Metadata from WCF service

I have a successfully running WCF service that I can call using javascript. However I want to invoke it using the WCF test client and im having difficulty doing this. I am told that I need to make sure I have enabled meta data publishing at the specified address. After reading the documentation I just cant see what im meant to do this is my configuration:
<system.serviceModel>
<services>
<service name="CommentSessionIDWCFService"
behaviorConfiguration="CommentSessionIDBehavior">
<endpoint
address=""
behaviorConfiguration="CountryProvinceBehavior"
binding="webHttpBinding"
contract="ICommentSessionIDWCFService" />
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="CommentSessionIDBehavior">
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="true"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior name="CountryProvinceBehavior">
<webHttp/>
</behavior>
</endpointBehaviors>
</behaviors>
</system.serviceModel>
I've read other posts but I can't see what to populate and I just keep getting errors. Q's..
Am I right in saying that I need to configure a complete new service in my config to show the metadata?
What do I add to the configuration to make this meta data published so I can invoke with the client?
You need a metadata endpoint for your service, here`s an example.
<services>
<service name="MyService" behaviorConfiguration="MEX">
<endpoint
address="http://localhost:8000/MEX"
binding="mexHttpBinding"
contract="IMetadataExchange"
/>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="MEX">
<serviceMetadata/>
</behavior>
</serviceBehaviors>
</behaviors>
I had a similar problem after changing the config file in the TestClient with right click and "edit with svceditor" to increase my maxbuffersize. If someone did that mistake as well, try rebuilding your project.
Add
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Required)]
Set httpGetEnabled to true and set the includeExceptionDetailInFaults to false:
<serviceMetadata httpGetEnabled="true"/>
<serviceDebug includeExceptionDetailInFaults="false"/>

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