Retrieving clients ip adress on the server

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Jason Wager - 20 Nov 2003 17:19 GMT

Hello,

I have looked a lot but not found how to do this:

I have a Web Services server and from this I want to see what IP adress the
Client (that connects to the SOAP server) has.
I want to do two things:
1) Restrict access to some specific IP adresses
2) Give different answers the different (allowed) IP adresses.

I don't know how to do either.

The first one, I suspect can be done with configuration.
The second one I need to be able to do from the code. That is, I hope that
there is a function that I can call, which tell me what IP adress the caller
has.
Otherwise, if someone can tell me how to look at the SOAP request as a low
level XML file in .NET (C# or VB.NET), I can find the answer for myself.

Thanks in advance
Jason

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Saurabh Nandu - 21 Nov 2003 05:52 GMT

hi,

You can get the IP Address from the Request object within a Web Method.

As far as restricting IP's you could configure that directly in IIS manager,
this way the restricted IP's will never be able to call your web service.
Although I belive you need to be running a Server OS to enable IP
restrictions.

For the second part i.e. giving different responses based on the client's IP
can be solved by various methods.

1) In code check the IP address can then have switch statements to send back
different messages.
2) You could write your own HttpHandler that can invoke differernt methods
if required to provide differernt responses.

Regards,
Saurabh Nandu
[ MVP | Author ]

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Jason Wager - 21 Nov 2003 08:01 GMT

Thank you for the reply.

Could you give me an example of this - perhaps including which classes that
are needed (Using ....).
I have tried looking at the documentation and all that I find are client
side functions for retrieving information from the server.

Thanks you again,
Jason

> You can get the IP Address from the Request object within a Web Method.
>
> Regards,
> Saurabh Nandu
> [ MVP | Author ]

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Manni - 21 Nov 2003 09:59 GMT

Just use
Context.Request.UserHostAddress

HTH

Manfred

> Thank you for the reply.
>
[quoted text clipped - 11 lines]
> > Saurabh Nandu
> > [ MVP | Author ]

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Jason Wager - 21 Nov 2003 12:24 GMT

Thanks

I ended up using
Context.Request.ServerVariables["REMOTE_ADDR"]
I do not know if there is any difference between the two - they return the
same, it seems to me.

Another one just pointed me to this URL, which showed me the above code
http://www.dotnet101.com/articles/art033_servervars.asp

Regards,
Jason

> Just use
> Context.Request.UserHostAddress
>
> HTH
>
> Manfred

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Manni - 21 Nov 2003 18:46 GMT

Of course there is a differenc :-)

Your code needs to use a textbase indexer
wich means searching somewhere to get an element of an array by
compareing text
and retrieves this "HTTP HEADER" value.

My code uses things CF had loaded to the elements of the Request object.
But since this is a porperty and I don't know the source this could
a.) be a call to some code simmilar to yours
b.) allways be loaded at initialisation of the page

So my code I think will be a little bit faster - espacially if they used B.

Otherwise - if find dealing with that object's property is better readable!

BUT: the value must be the same!!!

Manfred

> Thanks
>
[quoted text clipped - 15 lines]
> >
> > Manfred

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Retrieving clients ip adress on the server

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