[GUACAMOLE-238] RDP Not Working on Server 2016 without Credentials

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Invalid
• Affects Version/s: 0.9.9, 0.9.10-incubating, 0.9.11-incubating
• Component/s: guacamole, guacamole-auth-jdbc-mysql, guacamole-auth-ldap
• Environment: Debian 8.3, Nginx reverse proxy, public SSL
• Assignee: Unassigned
• Reporter: Jesse Brinson
• Created: 06/Mar/17 23:20
• Updated: 07/Mar/17 00:52
• Resolved: 07/Mar/17 00:52

Description

RDP fails immediately on Server 2016 when no username/password are specified in authentication parameters. When I manually set username/password, it will connect.

Domain, hostname, RDP Encryption and port number are the only other set-parameters. (also tried using different auth types). Server 2012 R2 and back work ok with these variables, and credentials left blank.

I've tried updating freerdp to the nightly version, and using Java 7 and 8, still no success.

Logs are only showing non-descriptive errors:

catalina.out:

17:08:03.734 [http-nio-8080-exec-23] INFO  o.a.g.tunnel.TunnelRequestService - User "guacadmin" connected to connection "18".
17:08:03.858 [Thread-341] INFO  o.a.g.tunnel.TunnelRequestService - User "guacadmin" disconnected from connection "18". Duration: 124 milliseconds
17:08:08.718 [http-nio-8080-exec-23] INFO  o.a.g.tunnel.TunnelRequestService - User "guacadmin" connected to connection "18".
Exception in thread "Thread-344" 17:08:08.761 [http-nio-8080-exec-28] INFO  o.a.g.tunnel.TunnelRequestService - User "guacadmin" disconnected from connection "18". Duration: 42 milliseconds
java.lang.IllegalStateException: Message will not be sent because the WebSocket session has been closed
        at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.writeMessagePart(WsRemoteEndpointImplBase.java:354)
        at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.startMessage(WsRemoteEndpointImplBase.java:311)
        at org.apache.tomcat.websocket.WsRemoteEndpointImplBase$TextMessageSendHandler.write(WsRemoteEndpointImplBase.java:675)
        at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendPartialString(WsRemoteEndpointImplBase.java:220)
        at org.apache.tomcat.websocket.WsRemoteEndpointImplBase.sendString(WsRemoteEndpointImplBase.java:172)
        at org.apache.tomcat.websocket.WsRemoteEndpointBasic.sendText(WsRemoteEndpointBasic.java:37)
        at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint$2.run(GuacamoleWebSocketTunnelEndpoint.java:169)

syslog:

Mar  6 17:08:35 guacremote guacd[989]: Creating new client for protocol "rdp"
Mar  6 17:08:35 guacremote guacd[989]: Connection ID is "$4fe8d7cf-be40-4e3f-aa8b-d4006746a99c"
Mar  6 17:08:35 guacremote guacd[9760]: Security mode: RDP
Mar  6 17:08:35 guacremote guacd[9760]: Resize method: display-update
Mar  6 17:08:35 guacremote guacd[9760]: User "@243c393c-899b-4cb8-a128-1f3b4671a15f" joined connection "$4fe8d7cf-be40-4e3f-aa8b-d4006746a99c" (1 users now present)
Mar  6 17:08:35 guacremote guacd[9760]: Loading keymap "base"
Mar  6 17:08:35 guacremote guacd[9760]: Loading keymap "en-us-qwerty"
Mar  6 17:08:36 guacremote guacd[9760]: Error connecting to RDP server
Mar  6 17:08:36 guacremote guacd[9760]: User "@243c393c-899b-4cb8-a128-1f3b4671a15f" disconnected (0 users remain)
Mar  6 17:08:36 guacremote guacd[9760]: Last user of connection "$4fe8d7cf-be40-4e3f-aa8b-d4006746a99c" disconnected
Mar  6 17:08:36 guacremote guacd[989]: Connection "$4fe8d7cf-be40-4e3f-aa8b-d4006746a99c" removed.