Impersonate on Qlik Cloud using jwt on .Net SDK

[Jmikhail]

Hello,

I am using Qlik Cloud and Iam trying to impersonate with a different user than the current user using jwt session, I got it to work perfectly with the Rest Apis. however, I still need to do the same using the .Net SDK.

here is how I tried to impersonate using the jwt token that I used with rest api

qcsLocation = QcsLocation.FromUri(mQSenseURL);
qcsLocation.AsJwt(JwtToken);

And I tried also with:

mNETlocation = Location.FromUri(mQSenseURL);
mNETlocation.VirtualProxyPath = "jwt-session";
mNETlocation.AsJwtViaProxy(JwtToken);

Not sure what I am missing, can you help me to get it work? 

[Øystein_Kolsrud · Accepted solution]

If you're doing both REST access and WebSocket access in the same project, then it's worth noting that you can't use the same JWT for authentication twice. You either have to use a new one for each, or connect using existing session for the second one. As example (if you use the package https://www.nuget.org/packages/QlikSenseRestClient/ for REST access), then this won't work because the JWT has already been "expended" when the connection to the app is attempted:

var restClient = new RestClient(url);
restClient.AsJsonWebTokenViaQcs(jwt);
Console.WriteLine(restClient.Get<JToken>("/api/v1/users/me"));

var location = QcsLocation.FromUri(url);
location.AsJwt(jwt);
using (var app = location.App(appId))
{
    Console.WriteLine(app.GetAppProperties().Title);
}

But this will as it reuses the session from the rest access:

var restClient = new RestClient(url);
restClient.AsJsonWebTokenViaQcs(jwt);
Console.WriteLine(restClient.Get<JToken>("/api/v1/users/me"));
            
var info = restClient.QcsSessionInfo;
            
var location = QcsLocation.FromUri(url);
location.AsExistingSession(info.EasSid,info.EasSidSig, info.SessionToken);
using (var app = location.App(appId))
{
    Console.WriteLine(app.GetAppProperties().Title);
}