I added the service to the WCF Test Client app and I get Service Added Successfully, but I don't see any of the operations available.
This WCF service is already being consumed by several javascript charts, so I should be able to see something here.
What am I doing wrong?
By default, WCFTestclient doesn’t support call the Restful service by using a client proxy. WCF creates the Restful style service with WebHttpbinding. thereby the client proxy class generates nothing thought the service WSDL is available.
Besides, we are capable of making a successful call to the service by using a client proxy. please refer to the below link.
WCF: There was no endpoint listening at, that could accept the message
the above client proxy class is generated by adding service reference.
https://learn.microsoft.com/en-us/dotnet/framework/wcf/accessing-services-using-a-wcf-client
Here is a detailed exposition of WCFTestClient from Microsoft document.
https://learn.microsoft.com/en-us/dotnet/framework/wcf/wcf-test-client-wcftestclient-exe?redirectedfrom=MSDN
Feel free to let me know if there is anything I can help with.
Related
We have an existing wcf service, and I created a new project. I want to use it. I hit add service reference, pop in the URL, press OK, and it adds it as a service reference but there is no config generated.
I also tried svcutil.exe /language:cs /out:GeneratedProxy.cs /config:app.config [url] but no config is generated, only the proxy cs.
I'm using VS 2013 / .NET 4.0
My question is, is this a sign that the SVC itself has some missing data that is required to build the contracts, or is the problem with adding the service reference?
For the record I have tried unchecking the reuse types option which some questions on here have reported as fixing the problem.
Bonus question, do you think if I can't get this working that manually adding some generic default bindings and endpoint code to the web config will work?
First, the reason that why the Adding service reference generates nothing is that the WCF service is rest style service. By default, the proxy-based invocation of rest style WCF services is complex.
https://en.wikipedia.org/wiki/Representational_state_transfer
https://learn.microsoft.com/en-us/dotnet/framework/wcf/feature-details/wcf-web-http-programming-model
Calling the WCF rest style service with the client proxy is uncommon. Generally, we construct an Http request by using an HTTP client library to call the service, such as HttpClient, WebClient.
How to fix "ERR_ABORTED 400 (Bad Request)" error with Jquery call to C# WCF service?
Besides, calling the WCF rest style service with the client proxy is feasible. Please refer to my previous link.
WCF: There was no endpoint listening at, that could accept the message
Feel free to let me know if there is anything I can help with.
We have developed the wcf service with the existing web service code. the existing customer wants to consume that service only changing the new url. They do not want to replace the proxy class. is it possible in any case.
The customer is able to consume the same with replacing the proxy and config. but he does not want to replace the proxy. please share ur comments whether it is possible or not.
You may be able to do this by configuring an endpoint using basicHttpBinding. I believe you will also need to force the use of the XML Serializer, and I don't know how to do that offhand, so someone else will have to help you with that. I'm concerned that there could still be small differences that would cause errors using the same proxy class.
On the other hand, if performance isn't the top consideration, you could create an ASMX service using the original class and method attributes from the old service. This ASMX service would then call the WCF service.
BTW, the ASMX service could call the WCF service on a fast endpoint. If they were running on the same server, they could use netNamedPipesBinding, for instance, but in any case could use netTcpBinding, which uses binary over TCP/IP. That would mitigate the performance difference from the extra hop.
Since i am new to WCF and Having configured a WCF service endpoint in IIS at Virtual Directory Api ( url goes like
http://localhost/api/taskapi.svc)
i was looking for ways to make request through web browser something like
http://localhost/api/taskapi.svc/GetCompleted
would respond with returnd data .I know this requires the binding of web service with the webHttpBinding but i don't know how to do it any help would be great ?
Use WCFSVGHoST application to test WCF applications. Application enables you to key-in parameters value and execute method of your interest.
Link for the same:
http://msdn.microsoft.com/en-us/library/bb552363.aspx
I have created a WCF service and hosted it through self hosting. This service doesn't have any metada published.
First Question
Can I consume it through Visual Studio, Add Service Reference? Hopefully not.
Can I consume it by creating manual proxy, i.e. ChannelFactory<ServiceContract>....?Hopefully yes.
Now in the second scenario, the client must be .Net, right?
So it implies that, to consume a wcf service on a non-.net platform, we have to expose its metadata?
Can't a WCF service without metadata, consume by Ajax client, or say Java client??
There are 3 options to consume a WCF Service:
If the service exposes a WSDL use "add service reference" from VS (or an equivalent from another platform). Note that if you do not want to expose the WSDL you could expose it just temporarly, save the WSDL in a file, and then send it to user in any platform to generate proxy from it. You can turn off the WSDL immediately after you save it. Also note that even if the WSDL is not exposed still you need to protect the web service from unauthorized access.
If this is a .Net client it can compile with the same Service Contract assembly and use ChannelFactory etc.
Any platform can send raw soap message (e.g. XML) to the service. Of course they need to know what is the right format. A WSDL can help but even without it if they have a working sample they can imitate it.
WCF provides REST (Representational State Transfer) support to consume it by non .NET client like JavaScript (AJAX), java, Objective C, web browser, etc...
Basically WCF REST is exposes methods and transferring data over the HTTP protocol and it supports all HTTP operations (GET, POST, PUT, and DELETE). This feature is making it platform independent as well as it doesn’t require metadata exposed.
Please refere below links to get more about WCF REST:
An Introduction To RESTful Services With WCF
WCF REST Programming Model Overview
WCF Rest vs. WCF SOAP
Create RESTful WCF Service API: Step By Step Guide
I have a silverlight web application and I am loading data to the client side using a wcf service. Should I secure the WCF service? Can anyone who's on the network call methods of the service?
Yeah they can see and access the service if they know the url.
And if they can see it, they only need to do a "Add Service reference" and they can see all methods available.
And since silverlight uses the basichttpbinding, it can work through firewalls (they typically allow http traffic).
You should secure it if it contains sensitive info.
By default you'll have security through obscurity, so if you're not broadcasting your WCF service's presence, it's not likely to be found or called. Additionally, it would be very hard to use it without having an appropriate client proxy configured. If you do not have the MEX endpoint set up, you are again pretty safe.
All that said though, you haven't really authorized the calls. It's theoretically possible to locate your WCF service and create a proxy to call it. So if you want to be safe, which I recommend, look into WCF authorization. It's fairly easy to set up, and you can use various options such as username-password, Windows accounts, or X.509 certificates. Each has its pros and cons.
This article goes into great detail, and there are others. http://msdn.microsoft.com/en-us/magazine/cc948343.aspx