Hi Support, We are currently trying to setup a local Dev environment on windows 10 machine for SSO implementation with Gluu. Gluu server 2.4.4.2 has been installed in Ubuntu 16.4 VM within Hyper-V. The client is an ASP.Net application written in C# running on same Windows 10 machine. We are communicating with Gluu using OXD server installed in windows 10. The issue is that when we try to get Authorization Url from Gluu server using our .Net application, the request fails with "Unknown internal server error occurs" message. Registration of client is successful without any issues and we are passing a valid oxd-id with the request. For Gluu server we are using local IP mapped to cds.gluu.server host name and for client we have local IP mapped to cds.gluu.client host name. The brief OXD log is given below along with config files we are using in oxd. The error seems to be originating from null pointer exception when oxd server is calling org.xdi.oxd.server.Utils.joinAndUrlEncode method. Can you please investigate what might be causing this particular issue?. oxd-server.log ``` ===================================================================== 2017-01-17 13:01:05,023 TRACE [org.xdi.oxd.server.license.LicenseService] License is validated successfully. 2017-01-17 13:01:05,023 TRACE [org.xdi.oxd.server.license.LicenseService] License data: LicenseMetadata{creationDate=Wed Jan 11 13:49:48 GMT 2017, licenseId=null, autoupdate=true, active=true, product=oxd, licenseName='Ahsan Umair', expirationDate=Thu Jan 11 13:49:48 GMT 2018, licenseCountLimit=9999, customerName=Ahsan Umair, emails=[]} 2017-01-17 13:01:05,023 INFO [org.xdi.oxd.server.service.SocketService] Server socket is bound to port: 8000, with timeout: 0 seconds. Start listening for notifications. 2017-01-17 13:01:26,721 DEBUG [org.xdi.oxd.server.service.SocketService] Start new SocketProcessor... 2017-01-17 13:01:26,726 TRACE [org.xdi.oxd.server.SocketProcessor] Socket processor handling... 2017-01-17 13:01:26,726 TRACE [org.xdi.oxd.common.CoreUtils] commandSize: -1, stringStorage: 2017-01-17 13:01:26,727 TRACE [org.xdi.oxd.common.CoreUtils] Parsed sizeString: 0139, commandSize: 139 2017-01-17 13:01:26,728 TRACE [org.xdi.oxd.common.CoreUtils] Read result: ReadResult{m_command='{"command":"get_authorization_url","params":{"oxd_id":"daaedded-ef1c-4251-b623-95c94cd6576c","scope":null,"acr_values":null,"prompt":null}}', m_leftString=''} 2017-01-17 13:01:26,728 TRACE [org.xdi.oxd.server.Processor] Command: {"command":"get_authorization_url","params":{"oxd_id":"daaedded-ef1c-4251-b623-95c94cd6576c","scope":null,"acr_values":null,"prompt":null}} 2017-01-17 13:01:26,746 TRACE [org.xdi.oxd.server.service.HttpService] Created TRUST_ALL client. 2017-01-17 13:01:26,876 WARN [org.apache.http.client.protocol.ResponseProcessCookies] Cookie rejected: "[version: 0][name: JSESSIONID][value: 455F7BA23092AEBA5C2A79E29C7E05E7][domain: cds.gluu.server][path: /oxauth/][expiry: null]". Illegal path attribute "/oxauth/". Path of origin: "/.well-known/openid-configuration" 2017-01-17 13:01:26,887 TRACE [org.xdi.oxd.server.service.DiscoveryService] Discovery response: { "issuer": "https://cds.gluu.server", "authorization_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/authorize", "token_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/token", "userinfo_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/userinfo", "clientinfo_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/clientinfo", "check_session_iframe": "https://cds.gluu.server/oxauth/opiframe", "end_session_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/end_session", "jwks_uri": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/jwks", "registration_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/register", "validate_token_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/validate", "federation_metadata_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/federationmetadata", "federation_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/oxauth/federation", "id_generation_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/id", "introspection_endpoint": "https://cds.gluu.server/oxauth/seam/resource/restv1/introspection", "scopes_supported": [ "phone", "openid", "uma_protection", "email", "user_name", "clientinfo", "uma_authorization", "profile", "mobile_phone", "address" ], "response_types_supported": [ "code", "code id_token", "token", "token id_token", "code token", "code token id_token", "id_token" ], "grant_types_supported": [ "authorization_code", "implicit", "urn:ietf:params:oauth:grant-type:jwt-bearer" ], "acr_values_supported": ["internal"], "auth_level_mapping": {"-1": [["internal"]]}, "subject_types_supported": [ "public", "pairwise" ], "userinfo_signing_alg_values_supported": [ "HS256", "HS384", "HS512", "RS256", "RS384", "RS512", "ES256", "ES384", "ES512" ], "userinfo_encryption_alg_values_supported": [ "RSA1_5", "RSA-OAEP", "A128KW", "A256KW" ], "userinfo_encryption_enc_values_supported": [ "RSA1_5", "RSA-OAEP", "A128KW", "A256KW" ], "id_token_signing_alg_values_supported": [ "HS256", "HS384", "HS512", "RS256", "RS384", "RS512", "ES256", "ES384", "ES512" ], "id_token_encryption_alg_values_supported": [ "RSA1_5", "RSA-OAEP", "A128KW", "A256KW" ], "id_token_encryption_enc_values_supported": [ "A128CBC+HS256", "A256CBC+HS512", "A128GCM", "A256GCM" ], "request_object_signing_alg_values_supported": [ "none", "HS256", "HS384", "HS512", "RS256", "RS384", "RS512", "ES256", "ES384", "ES512" ], "request_object_encryption_alg_values_supported": [ "RSA1_5", "RSA-OAEP", "A128KW", "A256KW" ], "request_object_encryption_enc_values_supported": [ "A128CBC+HS256", "A256CBC+HS512", "A128GCM", "A256GCM" ], "token_endpoint_auth_methods_supported": [ "client_secret_basic", "client_secret_post", "client_secret_jwt", "private_key_jwt" ], "token_endpoint_auth_signing_alg_values_supported": [ "HS256", "HS384", "HS512", "RS256", "RS384", "RS512", "ES256", "ES384", "ES512" ], "display_values_supported": [ "page", "popup" ], "claim_types_supported": ["normal"], "claims_supported": [ "birthdate", "country", "name", "email", "email_verified", "given_name", "gender", "inum", "family_name", "updated_at", "locale", "middle_name", "nickname", "phone_number_verified", "picture", "preferred_username", "profile", "zoneinfo", "user_name", "website" ], "service_documentation": "http://gluu.org/docs", "claims_locales_supported": ["en"], "ui_locales_supported": [ "en", "es" ], "scope_to_claims_mapping": [ {"phone": [ "phone_number_verified", "phone_number" ]}, {"openid": ["inum"]}, {"uma_protection": []}, {"email": [ "email_verified", "email" ]}, {"user_name": ["user_name"]}, {"clientinfo": [ "name", "inum" ]}, {"uma_authorization": []}, {"profile": [ "name", "family_name", "given_name", "middle_name", "nickname", "preferred_username", "profile", "picture", "website", "gender", "birthdate", "zoneinfo", "locale", "updated_at" ]}, {"mobile_phone": ["phone_mobile_number"]}, {"address": [ "formatted", "postal_code", "street_address", "locality", "country", "region" ]} ], "claims_parameter_supported": true, "request_parameter_supported": true, "request_uri_parameter_supported": true, "require_request_uri_registration": false, "op_policy_uri": "http://ox.gluu.org/doku.php?id=oxauth:policy", "op_tos_uri": "http://ox.gluu.org/doku.php?id=oxauth:tos", "http_logout_supported": "true", "logout_session_supported": "true" } 2017-01-17 13:01:26,904 ERROR [org.xdi.oxd.server.Processor] java.lang.NullPointerException at com.google.common.base.Joiner.join(Joiner.java:183) at org.xdi.oxd.server.Utils.joinAndUrlEncode(Utils.java:52) at org.xdi.oxd.server.op.GetAuthorizationUrlOperation.execute(GetAuthorizationUrlOperation.java:53) at org.xdi.oxd.server.op.GetAuthorizationUrlOperation.execute(GetAuthorizationUrlOperation.java:20) at org.xdi.oxd.server.Processor.process(Processor.java:80) at org.xdi.oxd.server.Processor.process(Processor.java:55) at org.xdi.oxd.server.SocketProcessor.run(SocketProcessor.java:60) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) 2017-01-17 13:01:26,923 TRACE [org.xdi.oxd.server.Processor] Send back response: {"status":"error","data":{"error":"internal_error","error_description":"Unknown internal server error occurs."}} 2017-01-17 13:01:26,923 ERROR [org.xdi.oxd.server.SocketProcessor] Quit. Enable to process command. oxd-default-site-config.json ===================================================================== { "op_host":"https://cds.gluu.server", "authorization_redirect_uri":"https://cds.gluu.client/rdservice/ssoredirect.aspx", "post_logout_redirect_uri":"https://cds.gluu.client/rdservice/ssologout.aspx", "redirect_uris":[""], "response_types":["code"], "grant_type":["authorization_code"], "acr_values":["basic"], "scope":["openid", "profile", "email"], "ui_locales":["en"], "claims_locales":["en"], "client_jwks_uri":"", "contacts":[] } ```