Marko, Thanks for your feedback! 

We have successfully pass that problem and are able to login to KEYCLOAK behind NGINX using HTTPS Proxy. Our challenge now is when our applications attempt to access we get the following error:
    1. Request URL:
      https://sso2.company.com/auth/realms/master/tokens/access/codes
    2. Request Method:
      POST
    3. Status Code:
      400 Bad Request
    4. Remote Address:
      99.99.99.99:443
  1. Response Headersview source
    1. Connection:
      keep-alive
    2. Content-Type:
      application/json
    3. Date:
      Thu, 14 Jan 2016 14:35:52 GMT
    4. Server:
      nginx/1.4.6 (Ubuntu)
    5. Transfer-Encoding:
      chunked
    6. X-Powered-By:
      Undertow/1
  2. Request Headersview source
    1. Accept:
      */*
    2. Accept-Encoding:
      gzip, deflate
    3. Accept-Language:
      en-US,en;q=0.8
    4. Authorization:
      Basic bXByLXBsYXRmb3JtOmU1MGYxODEyLTYzYTQtNGM0YS05NWQ
    5. Connection:
      keep-alive
    6. Content-Length:
      172
    7. Content-type:
      application/x-www-form-urlencoded
    8. Cookie:
      KEYCLOAK_IDENTITY=eyJhbGciOiJSUzI1NiJ9.eyJqdGkiOiIzNGY0ZDI1OS02NzJjLTQzYjUtOGFmOC1hNzkwMWRiMDUxMmYiLCJleHAiOjE0NTI4MTgxNTMsIm5iZiI6MCwiaWF0IjoxNDUyNzgyMTUzLCJpc3MiOiJodHRwczovL3NzbzIubWVkaWNhbHBheXJldmlldy5jb20vYXV0aC9yZWFsbXMvbWFzdGVyIiwiYXVkIjpudWxsLCJzdWIiOiJhNWM2MzJiYy0xNmNlLTQ3NzgtOGNmMy05MWQ4MmMzNTE3NmYiLCJzZXNzaW9uX3N0YXRlIjoiOWRiNjdhNGQtOWIwMS00NjgxLTlmYmMtZDQ3N2Y1NTgyMGYyIiwicmVzb3VyY2VfYWNjZXNzIjp7fX0.JyQIOJk5214-n4y0RkpEuLJWY4u6Z4Fu_086Z9nwM9BU8TarV-oH6cxZEBYakyL8pvmwf0CWHMmN3XNF-Zv4b1UPutcLP7IChM1EEr4F1tPxwmddYS1M90NdY7Bzn2R36mnASZqczMMAisd-OE2TU8oDgMyg0Rb0iZNIi_jJU_Rd-na4qhfuBojF_u8BSFjSJsd3agjF5ZZ9ok9mo2McCMDaV21vozVryIkR1vfAKPWf6WI8fEQBpDAFsh37M_k
    9. DNT:
      1
    10. Host:
      sso2.company.com
    11. Origin:
      http://app.local.company.com
    12. Referer:
      http://app.local.company.com/App/
    13. User-Agent:
      Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36
  3. Form Dataview sourceview URL encoded
    1. code:
      Vyzj7f-Aq2anYTJy7AoK4e6h0s2Ypp0vQ6okx7lWlRo.d2acab15-f708-4838-bd4b-2562fd46f8e2
    2. redirect_uri:
      http://app.local.company.com/App/
Please do note that this same application is able KEYCLOAK using basically the same configuration without NGINX in the MIX. Have any thoughts was to what we should look to configure differently with NGIX in the mix? 

On Mon, Jan 4, 2016 at 7:16 AM Marko Strukelj <mstrukel@redhat.com> wrote:
The error 'org.apache.http.conn.HttpHostConnectException: Connection to https://sso2.domain.com refused' means that either there is a server side problem - your Nginx isn't started and listening on port 443, a firewall preventing incoming connections - or there is a client side problem - a DNS issue improperly resolving sso2.domain.com into IP on the host where Tomcat is running.

At this point no SSL handshaking was attempted yet.

If you try 'curl https://sso2.domain.com' or 'telnet sso2.domain.com 443' from the server running your Tomcat you'll see the same issue. Once that starts to work, only then will any SSL / proxying related configuration issues start to manifest themselves.

On Wed, Dec 30, 2015 at 11:34 PM, Christopher Wallace <cjwallac@gmail.com> wrote:
Community, I have spent a decent amount of time attempting to get KEYCLOAK behind an NGINX Reverse Proxy to protect a TOMCAT Application. It does work without the proxy, but I need the proxy to handle certificates. I think I am pretty close to having it working, but somethings seems to be missing... I have done the following. I appreciate any insight you may have as I think I have exhausted other resources. 

1. Configure a server in NGINX

server {

listen   443;


ssl    on;

ssl_certificate    /etc/ssl/certs/dcf30de94f28f16f.crt;

ssl_certificate_key    /etc/ssl/certs/*.domain.key;


server_name sso2. domain.com;

access_log /var/log/nginx/nginx.sso.access.log;

error_log /var/log/nginx/nginx.sso.error.log;

  location / {

        proxy_set_header Host $host;

        proxy_set_header X-Real-IP $remote_addr;

        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        proxy_set_header X-Forwarded-Proto $scheme;

        proxy_set_header X-Forwarded-Port 443;

        proxy_pass http://internalip:8080;

    }

}

2. Enable SSL on a Reverse Proxy

First add proxy-address-forwarding and redirect-socket to the http-listener element:

<subsystem xmlns="urn:jboss:domain:undertow:1.1">
    ...
    <http-listener name="default" socket-binding="http" proxy-address-forwarding="true" redirect-socket="proxy-https"/>
    ...
</subsystem>

Then add a new socket-binding element to the socket-binding-group element:

<socket-binding-group name="standard-sockets" default-interface="public" port-offset="${jboss.socket.binding.port-offset:0}">
    ...
    <socket-binding name="proxy-https" port="443"/>
    ...
</socket-binding-group>


RECIVE THE FOLLOWING ERROR in TOMCAT:

1807906 [http-nio-8080-exec-9] ERROR o.k.a.OAuthRequestAuthenticator - failed to turn code into token 

org.apache.http.conn.HttpHostConnectException: Connection to https://sso2.domain.com refused

at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:151) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:125) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:640) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784) ~[httpclient-4.2.1.jar:4.2.1]

at org.keycloak.adapters.ServerRequest.invokeAccessCodeToToken(ServerRequest.java:90) ~[keycloak-adapter-core-1.7.0.Final.jar:1.7.0.Final]

at org.keycloak.adapters.OAuthRequestAuthenticator.resolveCode(OAuthRequestAuthenticator.java:297) [keycloak-adapter-core-1.7.0.Final.jar:1.7.0.Final]

at org.keycloak.adapters.OAuthRequestAuthenticator.authenticate(OAuthRequestAuthenticator.java:243) [keycloak-adapter-core-1.7.0.Final.jar:1.7.0.Final]

at org.keycloak.adapters.RequestAuthenticator.authenticate(RequestAuthenticator.java:95) [keycloak-adapter-core-1.7.0.Final.jar:1.7.0.Final]

at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.authenticateInternal(AbstractKeycloakAuthenticatorValve.java:189) [keycloak-tomcat-core-adapter-1.7.0.Final.jar:1.7.0.Final]

at org.keycloak.adapters.tomcat.KeycloakAuthenticatorValve.authenticate(KeycloakAuthenticatorValve.java:28) [keycloak-tomcat8-adapter-1.7.0.Final.jar:1.7.0.Final]

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470) [lib/:na]

at org.keycloak.adapters.tomcat.AbstractKeycloakAuthenticatorValve.invoke(AbstractKeycloakAuthenticatorValve.java:170) [keycloak-tomcat-core-adapter-1.7.0.Final.jar:1.7.0.Final]

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142) [lib/:na]

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [lib/:na]

at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) [lib/:na]

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88) [lib/:na]

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516) [lib/:na]

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086) [tomcat-coyote.jar:8.0.18]

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659) [tomcat-coyote.jar:8.0.18]

at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) [tomcat-coyote.jar:8.0.18]

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558) [tomcat-coyote.jar:8.0.18]

at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515) [tomcat-coyote.jar:8.0.18]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_25]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_25]

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.0.18]

at java.lang.Thread.run(Thread.java:745) [na:1.8.0_25]

Caused by: java.net.ConnectException: Connection timed out

at java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:1.8.0_25]

at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:345) ~[na:1.8.0_25]

at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_25]

at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_25]

at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_25]

at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_25]

at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:649) ~[na:1.8.0_25]

at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:549) ~[httpclient-4.2.1.jar:4.2.1]

at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.2.1.jar:4.2.1]

... 29 common frames omitted


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