.NET Client while consuming the WCF service I am able to change GenerateMessageContracts settings manually here.
File: Reference.svcmap
<ReferenceGroup xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema" ID="c3e3cd74-61c2-408a-a511-63a2b654abd3"
xmlns="urn:schemas-microsoft-com:xml-wcfservicemap">
<ClientOptions>
…………
<GenerateMessageContracts>true</GenerateMessageContracts>
</ClientOptions>
</ReferenceGroup>
I would like to change these setting in the WCF Service itself.
Dont know how to set GenerateMessageContracts manually for PHP client.
Anybody knows this?
You can't change that setting on the server side. The metadata exposed by the service (WSDL) which is consumed by the client side does not have any information regarding message contracts - that's a WCF term, while WSDL is a general-purpose standard. You can have two clients, one with message contracts, and one without, which send exactly the same request (and accepts the same response) to the service, and as far as the service is concerned, the requests are identical.
Related
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.
I am developing a wcf service (basicHttpBinding) that should also be consumed by non .net clients (e.g. Java clients). But now I wonder how the client can define his client config file. Or is this file only needed for .net-clients? (I am thinking of configurations like maxReceivedMessageSize or maxItemsInObjectGraph for example).
Each development platform (call it as you want: SOAP stack, Framework, API) has its own way to configure communication. You don't need to bother with it. You just need to expose correct WSDL and client's developer will be responsible for configuring the client application based on his needs.
If you want to extend documentation of your service in WSDL you can use wsdl:documentation. WCF doesn't offer it by default but you can use this technology sample to extend WCF. You can use such documentation for example to describe that service operation can return large amount of data. Another approach to add wsdl:documentation is using WCF Extras.
From the sound of it, the client shouldn't have access to those configuration options. For instance, why should a client to the WCF service be able to specify the maxReceivedMessageSize?
What you probably want to do is define these configuration options on the server-side. If a client makes a call and there is a conflict with one of your options (i.e. the client exceeds maxReceivedMessageSize), you'll want to throw a SoapException back to the client.
If you want to let the client have access to the configuration settings before he or she sends a request, you can always implement a simple web service method that sends back the values.
I have a WCF Service that I want my client to be able to consume from IIS without going through a proxy. The client was consuming asmx service in vbscript using the htc behavior:
<div id="oWSInterop" style="behavior:url(webservice.htc)"></div>
oWSInterop.useService "http://localhost/WSInteroperability.asmx", "WSInteroperability"
Set response = oWSInterop.WSInteroperability.callServiceSync("BuildSingleDoc", 1002, 19499, XMLEncode(sAdditionalDetail))
So basically I just want to make this work with making as few changes as possible on the existing client. Am I forced to use a proxy (that is, a class on the client side that exposes the operations in the WCF service) when consuming a WCF service? I do understand the benefits of a proxy and am not opposed to using it for most other client implementations, but in this case I'm not sure I have the time to deal with it on the client - i just want it to work the way it has been with only the endpoint changing.
A client-side proxy class to call the service?
Yes, you definitely need that (unless you do REST-based WCF services, which you can call with a HttpClient alone) - that's where the whole WCF runtime lives and does its magic.
If you want to call up REST-based services, you can do this without any proxy whatsoever - but then you're left to do XML or JSON parsing yourself. It can be done, but it might not be such a great idea.
What's the problem with the proxy?? It's really just a small wrapper that bundles up your calls into a serialized message and sends it to the server side. No big harm, in my opinion....
What are you seeing? What makes you thank that proxy is an issue? If that is server-side code, it should use the browsers settings (WinINet) which should work fine. Perhaps the "localhost" would be an issue, though, since to the client that still means "talk to yourself" (i.e. not the server).
If that is server side you'll probably need to configure WinHTTP appropriately; in particular, to skip the proxy for local addresses. Of course, "localhost" should loop-back anyway...
i have been reading a little about REST services and i would love to know more.
I wonder if anyone can confirm, currently we have a wcf web service (ending in .svc) and we have many clients accessing (i.e. form linux, max and PC) ...
if i was to change my server to use REST then would the clients break?
If you CHANGE the service to be a RESTful format, then yes...existing clients would have to change.
If you ADD a RESTful endpoint and kept the existing endpoint as well, then no...existing clients could continue to use the old endpoint until they migrated their code to use the new RESTful endpoint.
Well, the two world are really SOAP vs. REST.
The "normal" WCF services using NetTcpBinding, basicHttpBinding, wsHttpBinding etc. are all using SOAP - your message is embededded in a SOAP envelope and sent across the wire, and the response comes back the same way. That's why you can't just point your browser to a WCF service and get data - browsers can't send and receive SOAP messages.
Advantages of SOAP: you have things like WSDL/XSD to clearly and very strictly define what your service does and what kind of data you send around.
REST is a totally different beast - no more SOAP, no more WSDL and XSD, no more creating a client that knows about the data types being shuffled back and forth - you just have URL's which represent resources, and you get back some XML - not a whole lot of system support for describing WHAT that XML will be - you'll have to hope the developer of the REST service provides some documentation about what can be retrieved, and what it looks like.
So REST is a totally different beast than SOAP, and it's implemented in WCF using the webHttpBinding.
So if you have existing "traditional" WCF service and clients, and you now switch your service to REST, then yes - 100% sure you'll break EVERY client....
Marc
I want to invoke a wcf service for testing on the http layer. I do not want to add a service reference and create a proxy and invoke. I want to create a new web test(VSTS) which sends a http request to the service and posts(Http post) the request in http body as an xml.
I have service metadata, with which I can see the datacontracts, but the wsdl:operation has only the operation name, wsdl:input is just blank.
On the Contary, an asmx service will have the soap request in the metadata which can be copied as the http request body, with the parameters replaced.
How to build a wcf service xml body from scratch just by looking at the service metadata (no access to the service logs as well), have got just the end point.
It is something like
<root>
<element1>element1</element1>
<element2>element2</element2>
</root>
But, how to find out this, root has to be some thing like
<FunctionRequest xmlns=""http://schemas...."" xmlns:i=""http://www.w3.org/2001/XMLSchema-instance"">
(tested for a local service and worked)
Now, without having access to service logs(svctraceviewer logs), not able to add a service reference, not able to use svcutil.exe(certificate based service), just only with metadata - wsdl, is there a way to find out the request that is to be sent to service?
Well, you will have to create proxy - either statically by adding a service reference or running svcutil on your service metadata, or you can construct it dynamically totally in code, if you wish.
In that case, you'd have to have your service contract (ISomethingService) at hand, and check out the ChannelFactory < ISomethingService > () concept - that should get you started.
Marc
Yes you can, but you have to do a little work first.
Build the service client by running svcutil.exe on the wsdl/xsd metadata. This will generate a c# with your service and data contract objects. Compile that to an assembly using csc.exe.
See the soap envelope body you can create a request object and manually serialize it with data contract serializer. Or you can host the assembly in WcfSvcHost.exe and add wcf logging to the config file. In either case you will only have the correct xml for the body, and even that might be wrong if the real service uses xml serializer instead of data contract serializer.
The next part is the hard part because you need to know the security model for the real service. If it only uses certificates for SSL and server identification, you should be able to send the xml using WebClient. But if it uses mutual certs and/or security tokens, you pretty much have to create a channelfactory by hand with the right bindings.