How to make connecting to wcf service easier

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Hi i made a WCF service that uses windows credentials to authenticate the user.

client side i have code like this.

C#

using (var serviceClient = new ServiceClient()) {
    var credentials = new NetworkCredential(username, password);
    serviceClient.ClientCredentials.Windows.ClientCredential = credentials;

    serviceClient.GetData();
}

now i have to do use the client to save data aswell.

The question is how can you reuse the serviceclient or how can you safely store the networkcredentials so the user doesn't have to re login every time the user needs data or updates data to the wcf service?

Posted 15-May-14 4:54am

BELGIUMsky

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Kornfeld Eliyahu Peter · Answer 1 · 2014-05-15T05:24:00

Windows credential - as Windows credentials - can only be used if WCF service can identify the client's current Windows credential (means can access the client's domain somehow). In that case client have not pass any credentials implicitly, but the configuration of the server is enough (read here about it[^]).
If you have a WCF service that knows nothing about client's domain you have explicitly pass domain/username/password of current credentials to it, and WCF will authenticate it on it's way...But! In that case you have no way but ask the (human) client to identify himself...
And there is a big problem! As anyone will advise you against to store those info anywhere at all. It may be a better think to add a single credential to your config file, that will be used by every client, that config file can be encrypted to hide values and can be changed if necessary...

m_sajid · Answer 2 · 2014-05-20T09:58:00

Solution 2

create a static class with static block which runs only once . create an instance of the wcf client object within that static block and keep using that instance.

Posted 20-May-14 9:58am

m_sajid

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BELGIUMsky 28-May-14 4:29am

do you need to change the lifespan or something to make this work?
if i try to use the same instance i get an error that the connection is closed