Re: add SOAP header - C# Discussion Boards

10-Sep-08 20:41

Hello everyone,

For some non-technical reasons, I can not change the web services implementation code at server side, but only the generated WSDL. Now I want to manipulate the WSDL of the web services to let it require client (web services consumer) to send some additional SOAP headers in each request.

My question is any reference documents about how to manipulate the WSDL so that each time when client is using the WSDL to generate the proxy, it could already have the data structures and other handy things in the proxy so that it is very convenient for the client to send request including the new SOAP headers. Any referred document to do this?

thanks in advance,
George

Erik Westermann11-Sep-08 10:48

11-Sep-08 10:48

It sounds like something you could do with Web Services Enhancements[^] - well...you could take a similar approach or just use WSE directly.

The problem is that your clients could end up adding the headers, but the web service won't understand them or even see them. Of course, if you have some intermediary that uses the headers then WSE is the way to go since you can add routing information and other stuff to the SOAP header.

There have been a number of revisions to WSE, so you need to make sure you're using the right version for your development platform. I believe WSE is also part of WCF, but I have not researched that to know for sure.

Erik Westermann - wWorkflow.net - BizTalk Consulting Services

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George_George15-Sep-08 4:21

15-Sep-08 4:21

Thanks Erik,

I read the article for an hour. But it never covers how to add a SOAP header for an input WSDL. It majorly covers security, TCP messaging and addressing.

My purpose is for an input WSDL file, I can add some required SOAP header for some web methods. Any comments or ideas?

regards,
George

Erik Westermann15-Sep-08 7:03

15-Sep-08 7:03

My reply was a little vague, but I did say you could so something like WSE does, or just use WSE directly.

I was thinking of WSE to add SOAP headers since you could just create a WS that mocks/mimics the WSDL in the file you have, then implement the service using empty methods or whatever, and finally use WSE to add the headers you want (I'm assuming that you want to add WSE headers since it sounds like you may want to route the request, or add credentials - this is exactly what WSE is for).

It is a round-about approach, but you end up with headers that are correct. Once you have them, use disco.exe to grab the WSDL (among other files) and you're set.

The alternate approach is to familiarize yourself with WSDL[^] and SOAP[^] - because WSDL includes SOAP - and manually edit your WSDL.

Personally, I think WSDL and SOAP are not meant for developers to read and edit directly, which is why I suggested the WSE route so that you could automatically generate the headers and resulting files, knowing that they are compliant with the underlying standards.

George_George15-Sep-08 22:16

15-Sep-08 22:16

Hi Erik,

I have read the article you recommened to me carefully. I think WSE only adds SOAP headers which is security related to support some special security protocols, not arbitrary SOAP header.

If I am wrong, please feel free to correct me and let me know which API from WSE could add arbitrary SOAP header. Thanks.

regards,
George

Erik Westermann16-Sep-08 3:28

16-Sep-08 3:28

Try this article[^]. The article explains how to add an arbitrary header to a SOAP message, and then use WSDL.EXe to generate the WSDL file.

So, here's how you could do it:

Option A:

Familiarize yourself with WSDL[^]/ and SOAP[^] - because WSDL includes SOAP - and manually edit your WSDL.

Option B:

Use the .NET framework to generate a new WSDL using the approach here http://blogs.tamtam.nl/paulb/2007/10/09/AddingCustomHeadersToASOAPMessagePart1.aspx[^] and then take the parts you want from your new file and copy them to your existing file.

I hope that clarifies it and wish you good luck!

George_George16-Sep-08 3:39

16-Sep-08 3:39

Thanks Erik,

1.

I have read the article, and it need to modify the source codes of web services code -- please feel free to correct me if I am wrong. Smile | :)

But my purpose is not to modify the web services code, and only modify the generated WSDL code. So, I think the code in the article does not help too much.

2.

For the WSDL and SOAP spec, they are really good, accurate and complete. But long... Smile | :)

Do you have any tutorials which are easy to learn the major concepts of WSDL and SOAP which is enough for me to complete my work -- add SOAP header?

regards,
George

Erik Westermann16-Sep-08 10:32

16-Sep-08 10:32

George_George wrote:
...they are really good, accurate and complete. But long...

Yes they are - that's so you can learn about SOAP and WSDL.

George_George wrote:
Do you have any tutorials which are easy...

No - you either learn it on your own or get someone to do it for you. And...I'm not the guy to do that for you - my rates are too high Wink | ;)

George_George16-Sep-08 19:57

16-Sep-08 19:57

Hi Erik,

I am looking for some samples which is doing similar work as I did -- e.g. adding SOAP header for some input WSDL file. But failed to find any ones very helpful.

Do you have any recommendations?

regards,
George

about Functions in c#

vijaylumar10-Sep-08 18:53

vijaylumar

10-Sep-08 18:53

hai

i m a vb.net programmer from 2 yrs,just from 3 days i m doing a project in c#

a small doubt , which i should not ask...

here it is

in vb.net

Public sub Display()

exit sub

end sub

the same code how to write in c#

my problem is with exit sub

how to exit from a button click event or procedure or function in c#

plz dont mind ... give reply

thank u

bye
vijay kumar d

User 665810-Sep-08 19:01

User 6658

10-Sep-08 19:01

public void Display()
{
   return;
}

Although you don't need the return in this case, here it'll return automatically when it's in a codepath that has no instructions left in this method.

regards

modified 12-Sep-18 21:01pm.

MarkB77710-Sep-08 19:03

MarkB777

10-Sep-08 19:03

Hi,

<br />
public void Display<br />
{<br />
<br />
}<br />

would be its equivalent.

Cheers,

Mark Brock
"We're definitely not going to make a G or a PG version of this. It's not PillowfightCraft." -- Chris Metzen
Click here to view my blog

V.10-Sep-08 20:15

10-Sep-08 20:15

in short, if your method returns void, you shouldn't exit, it will exit after automatically after }.
When you return something (object, integer, ...) you should return that type.

private void MethodNoReturn(){
  //do stuff
}

or

private string MethodReturnString(){
  //do stuff

  return a_string;
}

hope this helps...

V.

Stop smoking so you can: Enjoy longer the money you save.
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