I have a C# client application that works with a web service using SOAP request. I've generate the requests C# code from the services web address using VS05 WSDL. I want the client in case of an error to print to a log file the SOAP request and response.
It's need to be done in run time.
how can it be done?
You might check the following blog post for an example of writing a custom SoapExtension that will allow you to achieve this.
Related
I have an application which can just send SOAP messages and parse responses. My WCF service works fine if i use proxy client, but i need to have ability just send POST request in SOAP format as it was in old ASMX services. Is there any possibility to do it?
I tried copy SOAP request from debug wcf client and send it as POST request with Content-Type text/xml but it doesn't give me a correct result.
Yes, you can call them using a "plain" HTTP request - after all, as far as the server is concerned all it receives are bytes in a TCP connection. Depending on the binding which you're using, you may also need to set some HTTP header - if you're using BasicHttpBinding on your service, you'll also need to set the SOAPAction header. Try sending your request, and your request from a client using a WCF proxy, and compare them in a tool such as Fiddler. If the requests are the same, the server will respond them the same as well.
When I need to pass the full soap message by http web request, I use SoapUI. You can give it a WSDL and it does what the proxy does for code, but instead generates soap xml. And as #carlosfigueira mentioned you will want to look in the HTTP Headers section and set them appropriately.
www.soapui.org
I have a simple windows console app that I have added a service reference to and I am trying to call a method and make a request! I am using the proxy classes generated by .Net when I added the service reference.
The web service is not on my machine but externally hosted by the client!
I am getting an error so I would like to see the HTTP request that is being sent.
I can't see the request on fiddler, why not?
Can I seen the generated request by debugging the console app?
You can see localhost traffic with Fiddler. See this article in the Fiddler FAQ.
You could also turn on WCF Tracing.
Fiddler bypass local traffic. If you want to sniff local address in the client config set .localhost address (with dot prefix).
Aside of Fiddler and embedded tracing tool there is another approach to see generated XML SOAP - custom MessageEncoder. It allows to interceprt original byte content including any malformed xml.
In order to implement tracing using this approach you need to wrap a standard textMessageEncoding with custom message encoder as new binding element and apply that custom binding to endpoint in your config.
Also you can see as example how I did it in my project -
wrapping textMessageEncoding, logging encoder, custom binding element and config.
I have a webservice [call it S1] exposed and clients call that service and get back response.So good so far.
I have to change my WSDL a bit [for some very odd reasons] but i dnt want clients to see the change. So my idea is to intercept the soap request somewhere b/w server and client and interceptor should modify the soap request and forward to the server.Similarly on response , again interceptor should intercept the request and change some property name and send it to the client.
Any idea how to do this? One approach IMO is to use handlers but here i dont have control over how server generates service from WSDL.
How can ESB help in this?
Please see its realtime application with huge requests to and from server!!!
An ESB like Mule ESB can help by acting as a proxy for your web service.
Can you not write a new web service with the new wsdl, then alter the old web service to simply call the new web service. A bit like overloading a method. That way you can have V1 and V2 web services.
How can I get the SOAP header of my web service function as xml?
I need an XML version of my working SOAP header to use as an example for someone with broken SOAP headers. He's using a different programming language, but since the headers are sent in XML, we're hoping we can compare those easily. I'm using C# and ToString() just gives me the name of the object. After googling, I tried Fiddler, but that didn't catch anything, and SOAP Extensions look way too complicated for what seems like a really simple task.
There is no easy way to do this with ASMX web services. If you were using WCF, it would be a trivial matter of turning on message logging.
Fiddler should catch everything, and it's well worth learning how to use. Be sure to look in the online documentation to learn how to capture traffic from localhost to localhost.
The accepted answer to this question mentions that you can capture traffic to a web service using soapUI. You can use it to act as a proxy or HTTP tunnel in order to capture messages sent to your web service. I think using it in HTTP Tunnel mode makes sense, because then you won't have to do anything with your client other than to point the URL to soapUI instead of your actual service.
The soapUI website talks about the SOAP Monitor feature, though I don't think it offers a good explanation for setting up the HTTP tunnel.
Here are the steps involved (based on soapUI 3.0.1):
Open Soap UI
create a New soapUI Project...
2.1 Give your project a name
2.2 Enter the path to your service's WSDL (http://localhost/.../YourService.asmx?WSDL)
Right-click on the project you just created
Select "Launch SOAP Monitor"
Choose "HTTP Tunnel"
Specify an unused port number for "Port". The default will probably work.
Enter the URL to your web service in "Set endpoint for HTTP Tunnel"
If you are using SSL, then you may need to fill in some of the other fields; otherwise, click OK
The HTTP tunnel is running, so now just reconfigure a client to use the HTTP tunnel instead of the actual web service. So if your actual service is "http://localhost:1234/YourService.asmx", then reconfigure your client to use "http://localhost:{Port}/YourService.asmx" where {Port} is the number you entered in step #6.
Now just run your client normally. You'll see the traffic logged in the soapUI interface. Select a message and click on the "Message Content" button at the bottom of the window to view the actual SOAP message.
A C# client application we developed calls an external SOAP web service of a third party company.
Now I want to trace the exact SOAP request envelopes that are being generated by the VS.NET-generated SOAP proxy in our application and transfered to the external SOAP web service.
The method of using a network monitor like Wireshark (as described here) or using Microsoft Network Monitor is no option since the externl SOAP web service only provides an SSL/HTTPS URL, so the payload of the HTTP packages are encrypted and not viewable.
My question is:
Is there a way of configuring the .NET-built-in web service client classes to output/trace/log their underlying HTTP requests and responses that are being generated/received? (or maybe some kind of event to subscribe to?)
If you're using a standard web service (not WFC), you can extend the SoapExtension class as described here:
http://www.blog.encoresystems.net/articles/how-to-capture-soap-envelopes-when-consuming-a-web-service.aspx
If you're using WFC, then you can implement IEndpointBehavior and IClientMessageBehavior as described here:
http://weblogs.asp.net/paolopia/archive/2007/08/23/writing-a-wcf-message-inspector.aspx
I use both, depending on whether I'm using web or service references.
You can use fiddler, perhaps, as a proxy and thus monitor HTTP/HTTPS requests. This won't require you to write any code on your part.
Fiddler Web Debugger
It is worth noting that there are caveats to debugging HTTPS requests with Fiddler. This page explains how it can be done.
Fiddler Web Debugger - Debugging HTTPS traffic with Fiddler2
You can use Fiddler, or System.Net tracing.
http://blogs.msdn.com/dgorti/archive/2005/09/18/471003.aspx
http://msdn.microsoft.com/en-us/library/bb203855(BTS.10).aspx