What does this mean? google search turns up nothing.
The curious thing is that I get this message when I try to access the web service directly in the browser http://localhost/Myservice/Service.asmx
But when I use the service (I invoke it inside my Jquery code) it works perfectly. Very curious detail....
This might be because you have a function in your web service that returns an interface, or that returns an object that contains a property or function using an interface. For further details on interfaces and serialization take a look at this SO question.When you use your web service from javascript you only call one or more specific functions, but browsing on your web service with internet explorer forces a request of a whole wsdl description of your the web service with all its functions. I guess that is why it worked for the first case and not for the second.
Related
I'm receiving an error when I'm attempting to consume a web service:
Cannot read the token from the 'Timestamp' element with the 'http://docs.oasis- open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd' namespace for BinarySecretSecurityToken, with a '' ValueType.
Not quite sure
The client is an asp.net web application, making a call. From Wireshark, one can see the post going in, and the response coming back, but then it errors out like this.
To give some background, this is a WCF calling on a java served web service.
You may need to add a security timestamp soap header to the message. Look at this SO question where they had the opposite problem but it may be helpful to look at their configuration. Also, you may save yourself some grief if you can use one of the WCF Interop Express bindings for accessing a java service implementing WS-Security.
I have develope a small web application in that i am using wcf service,I have creating a methods like GetData(), When i call this method in Browser it doesn't show any data just it showing blank page please help me how can i resolve this problem.
http://localhost:54421/Service1.svc/GetData
Contrary to SOAP ASMX web services with WCF you can no longer invoke them directly in the browser. You could use the WcfTestClient.exe utility to quickly test a method. You can invoke the method directly in the browser if you are using REST and GET verb is allowed for this method.
Say i'm having a web service that accepts two arguments and that is being called/consume in my application. Now after some time, the web service changes and accepts three arguments, hence in my application, would that be throwing an error, or i need to just update the web reference, or i need to recreate a web serivce or would that be working fine?
Let me know if any doubts
Thanks!
You could add optional parameters where if a parameter value isn't given to the method a default value is used.
From a "pure" architectural aspect, you should never change the signature of a method of a service once it's in use. You should version by creating a new method with a different namespace. But staying pure is sometimes difficult to do.
In your case you need to update the Web reference in the client application and then modify the code to pass in the appropriate parameter to the method in the service proxy.
I have web services that work fine using SOAP, but today I received a request to call the web services using the URL.
So, instead of consuming the service, they want to call http://servicename/ProductEnq.asmx/ProductEnqByCodeWithLogin?Code=123456789&Username=user&Password=bubbles
I found that the "basic" calls work 100%, i.e. when the params are all strings, like the call above. This method returns a complex type.
Where I get stuck is that I have another method that expects a List of strings as parameter together with some other params.
No matter how I try to get the list to be populated, the page always returns "System.InvalidOperationException: ProductEnqByMultipleCodesWithLogin Web Service method name is not valid."
Please note that this call works 100% when called from my application or WebService Studio.
Any hints on if this is possible, or should I just convince the client to use SOAP?
Thank you.
Jaco
Our web services are distributed across different servers for various reasons (such as decreasing latency to the client), and they're not always all up-to-date. Rather than throwing an exception when a method doesn't exist because the particular web service is too old, it would be nicer if we could have the client check if the service responds to a given method before calling it, and otherwise disable the feature (or work around it).
Is there a way to do that?
Get the WSDL (append ?wsdl to the URL) - you can parse that any way you like.
Unit test the web service to ensure its signatures don't break. When you write code that breaks the method signature, you'll know and can adjust the other applications accordingly.
Or just don't break the web services and publish them in a way that enable syou to version them. As in http://services.domain.com/MyService/V1.1/Service.asmx (for .NET) so that way your applications that use v1.1 won't break when you publish v1.2 and make breaking changes.
I would also check out using an internal UDDI server if it's really that big of a hasle to manage your web services. Using the Green Pages of UDDI will tell you what you want to know about the service.
When you are making a SOAP request you are just sending an HTTP request to a server. If the server understands it, it will respond with an HTTP 200 and some XML back, if it doesn't it will send you some error HTTP code (404, 500, ...)
There is no general way to ask for the existance of a "method" exposed by a web service. Try to use the WSDL exposed if it is automatic, or just try to use the "method" and check for an error in the response (you don't have to send an exception to the user...)
Also, I don't know if I understood you well, but you are thinking of quering the server twice, once to check if the method exists, and second to make the actual call it if it does? I would just check for the error if it doesn't, and proceed normally if it does.