I am in the process of trying out a few adapters supported by keycloak.

Tried the tomcat adapter but im a getting a continuous redirect on the browser.

I did the following;

1/ Installed the adapter on tomcat

2/ Installed all the libraries.

3/ Changed catalina.jar to add an authentication type called KEYCLOAK

4/ Added the context.xml to the client in META-INF

<?xml version="1.0" encoding="UTF-8"?>
<Context path="/sample" debug="0" privileged="true">
    <Valve className="org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve" />
</Context>

5/ Added the keycloak.json

{
"realm": "demo",
"realm-public-key": "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC6pigvwuJUVfi9sEaZOj7txNfBwPAEt+0AIBSFHRzoWSxNAnznkwGV83qGK+Kc6GAMdlch87GeFzSZh76qC9GUlQ1WGOjbNA4YApnd9PmLvt1iBfe/3xkjIBeKEYmeA9mg3xn3eTosWmL1WIFzFy4NRbe09fAC1hZ5zazfjSDBtwIDAQAB",
"auth-server-url": "http://localhost:8080/auth",
"ssl-required": "external",
"resource": "customer-portal",
"public-client": true,
"use-resource-role-mappings": true
}

6/ Changed web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

    <security-constraint>
        <web-resource-collection>
            <web-resource-name>sample</web-resource-name>
            <url-pattern>/*</url-pattern>
        </web-resource-collection>
        <auth-constraint>
            <role-name>user</role-name>
        </auth-constraint>
    </security-constraint>
    <security-role>
        <role-name>user</role-name>
    </security-role>
    <login-config>
        <auth-method>KEYCLOAK</auth-method>
        <realm-name>demo</realm-name>
    </login-config>
</web-app>

The client app successfully redirects to the server url (keycloak) and I can login entering the creds. and it redirects back to the client, however the client goes into a loop.

Should I do a change in the client to extract some details and save it in the session? Or will be the adapter handle this for me

Kalinga