How to pass parameter from RP to IDP in passive flow?

Question

How to pass parameter from RP to IDP in passive flow?

Anand AV 96

Hi

We have multiple client's IDP federated with our ADFS 4.0 server.
A user click login from web application (RelyingParty ) then redirected to ADFS's IDP selection page and redirected to there respective IDP page.

Now my question is how to pass RelyingParty identifier("https://webapp.mycompany.net") to IDP.
I see wtrealm has the RPI but when ADFS redirects the request to IDP it changes the value to it's own identifier(http://sts.mycompany.net/adfs/services/trust)

Can some one please help me on this?.

Thanks.

Answer 1

Anand AV 96

The following command pass "wctx" from RP->ADFS->IDP

Set-AdfsWebConfig -ContextCookieEnabled 0

Source: https://nzpcmad.blogspot.com/2014/09/adfs-joys-of-hiden-context.html

Answer 2

Pierre Audonnet - MSFT 10,121 Microsoft Employee

When using the IDP Initiated Flow for your application, you can use the LoginToRp query string to skip the drop down menu selection. For example:

https://sts.contoso.com/adfs/ls/IdpInitiatedSignon.aspx?LoginToRP=https://webapp.mycompany.net

Anand AV 96 Reputation points

2021-02-15T15:22:56.087+00:00

I want to pass a value (e.g. language/countrycode/company/relyingpartyidenfier ) in query string from RP->ADFS->IDP(Authenticate).
Pierre Audonnet - MSFT 10,121 Reputation points Microsoft Employee

2021-02-15T16:54:05.153+00:00

Oh, I see. I misread the question. I thought you were using the IDP initiated flow under the cover. In an SP-initiated flow, you need to pass a RelayState information in your request.
RelayState will be passed back as-is to the SP once the authentication is sucessful.
Aaron Christenson 41 Reputation points

2021-07-09T17:15:41.097+00:00

Piaudonn,

I am interested in this also, do you know how to send parameters in the relaystate request string. I have this https://adfsuat.lmcu.org/adfs/ls/idpinitiatedsignon.aspx?logintorp=urn:bki:servicingdigital:rwa:lmcu:uat and I also need to pass through
NameId=3423423
LoanIdentifier=3423423
TaxpayerIdentifierLast4Value=4893
PortfolioId=258

Thanks

How to pass parameter from RP to IDP in passive flow?

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