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Posted to issues@guacamole.apache.org by "Michael Jumper (JIRA)" <ji...@apache.org> on 2019/01/26 01:07:00 UTC
[jira] [Closed] (GUACAMOLE-719) Guacamole: Multiple simultaneous
vnc connections over websocket close each other
[ https://issues.apache.org/jira/browse/GUACAMOLE-719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Jumper closed GUACAMOLE-719.
------------------------------------
Resolution: Invalid
Hi [~phantomblue],
If you're having network issues like described here, please bring your question to the mailing list. We and the rest of the community can attempt to assist there. As mentioned in the FAQ, [the more fundamental an issue is, the less likely it is to be a bug|http://guacamole.apache.org/faq/#probably-not-a-bug], and in this case it's safe to say that VNC and WebSocket are not fundamentally broken in 0.9.14 nor the latest 1.0.0 release.
Please also be sure to retry against the latest release (1.0.0) to make sure that what you're seeing is not due to some underlying issue that has actually already been fixed.
> Guacamole: Multiple simultaneous vnc connections over websocket close each other
> --------------------------------------------------------------------------------
>
> Key: GUACAMOLE-719
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-719
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-common, guacd
> Affects Versions: 0.9.14
> Reporter: Rui Wang
> Priority: Major
>
> We are using guacamole to access remote desktop in web-browser. We try to use websocket-tunnel for better performance, but if I open two tab in my browser connecting to same vnc server with different ports through same guacd server, one page get frozen(websocket stop send/receive any messages), the other get error like: 776 and disconnected. And we can connect to these two vnc servers using vnc-viewer direclty after browser vnc frozen/disconnected.
> Seems guacd will abort/kill one after another. It's only happending if we use webscoket, using httpeServlet tunnel seems do not have such probelm.
> Anyone encounter similar issue? Here are my setup.
> # guacamole-js was used in web side.
> # We use x11vnc, guacd installed with same linux box
> # We developed two endpoints use spring-boot: websocket-tunnel by extending GuacamoleWebSocketTunnelEndpoint,http-servlet tunnel by extending GuacamoleHTTPTunnelServlet
> guacd log here:
> {code:java}
> Jan 25 04:32:58 vnchost guacd[105232]: Protocol "vnc" selected
> Jan 25 04:32:58 vnchost guacd[105232]: Connection ID is "$7d545e7e-0a29-40e5-a4a3-9964fa07b22b"
> Jan 25 04:32:58 vnchost guacd[105232]: VNC server supports protocol version 3.8 (viewer 3.8)
> Jan 25 04:32:58 vnchost guacd[105232]: We have 1 security types to read
> Jan 25 04:32:58 vnchost guacd[105232]: 0) Received security type 1
> Jan 25 04:32:58 vnchost guacd[105232]: Selecting security type 1 (0/1 in the list)
> Jan 25 04:32:58 vnchost guacd[105232]: Selected Security Scheme 1
> Jan 25 04:32:58 vnchost guacd[105232]: No authentication needed
> Jan 25 04:32:58 vnchost guacd[105232]: VNC authentication succeeded
> Jan 25 04:32:58 vnchost guacd[105232]: Desktop name "vnchost:0"
> Jan 25 04:32:58 vnchost guacd[105232]: Connected to VNC server, using protocol version 3.8
> Jan 25 04:32:58 vnchost guacd[105232]: VNC server default format:
> Jan 25 04:32:58 vnchost guacd[105232]: 32 bits per pixel.
> Jan 25 04:32:58 vnchost guacd[105232]: Least significant byte first in each pixel.
> Jan 25 04:32:58 vnchost guacd[105232]: TRUE colour: max red 255 green 255 blue 255, shift red 16 green 8 blue 0
> Jan 25 04:32:58 vnchost guacd[105232]: Starting client
> Jan 25 04:32:58 vnchost guacd[105232]: client2server supported messages (bit flags)
> Jan 25 04:32:58 vnchost guacd[105232]: 00: 00ff 0081 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:32:58 vnchost guacd[105232]: 08: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:32:58 vnchost guacd[105232]: 10: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:32:58 vnchost guacd[105232]: 18: 0000 0000 0000 0000 - 0000 0000 0000 0004
> Jan 25 04:32:58 vnchost guacd[105232]: server2client supported messages (bit flags)
> Jan 25 04:32:58 vnchost guacd[105232]: 00: 001f 0080 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:32:58 vnchost guacd[105232]: 08: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:32:58 vnchost guacd[105232]: 10: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:32:58 vnchost guacd[105232]: 18: 0000 0000 0000 0000 - 0000 0000 0000 0004
> Jan 25 04:32:58 vnchost guacd[105232]: Connected to Server "unknown (LibVNCServer 0.9.9)"
> Jan 25 04:36:28 vnchost guacd[105538]: Protocol "vnc" selected
> Jan 25 04:36:28 vnchost guacd[105538]: Connection ID is "$6fd98484-1dd0-4c66-aa04-6c358cd30548"
> Jan 25 04:36:29 vnchost guacd[105538]: VNC server supports protocol version 3.8 (viewer 3.8)
> Jan 25 04:36:29 vnchost guacd[105538]: We have 1 security types to read
> Jan 25 04:36:29 vnchost guacd[105538]: 0) Received security type 1
> Jan 25 04:36:29 vnchost guacd[105538]: Selecting security type 1 (0/1 in the list)
> Jan 25 04:36:29 vnchost guacd[105538]: Selected Security Scheme 1
> Jan 25 04:36:29 vnchost guacd[105538]: No authentication needed
> Jan 25 04:36:29 vnchost guacd[105538]: VNC authentication succeeded
> Jan 25 04:36:29 vnchost guacd[105538]: Desktop name "vnchost:2"
> Jan 25 04:36:29 vnchost guacd[105538]: Connected to VNC server, using protocol version 3.8
> Jan 25 04:36:29 vnchost guacd[105538]: VNC server default format:
> Jan 25 04:36:29 vnchost guacd[105538]: 32 bits per pixel.
> Jan 25 04:36:29 vnchost guacd[105538]: Least significant byte first in each pixel.
> Jan 25 04:36:29 vnchost guacd[105538]: TRUE colour: max red 255 green 255 blue 255, shift red 16 green 8 blue 0
> Jan 25 04:36:29 vnchost guacd[105538]: Starting client
> Jan 25 04:36:29 vnchost guacd[105538]: client2server supported messages (bit flags)
> Jan 25 04:36:29 vnchost guacd[105538]: 00: 00ff 0081 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:36:29 vnchost guacd[105538]: 08: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:36:29 vnchost guacd[105538]: 10: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:36:29 vnchost guacd[105538]: 18: 0000 0000 0000 0000 - 0000 0000 0000 0004
> Jan 25 04:36:29 vnchost guacd[105538]: server2client supported messages (bit flags)
> Jan 25 04:36:29 vnchost guacd[105538]: 00: 001f 0080 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:36:29 vnchost guacd[105538]: 08: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:36:29 vnchost guacd[105538]: 10: 0000 0000 0000 0000 - 0000 0000 0000 0000
> Jan 25 04:36:29 vnchost guacd[105538]: 18: 0000 0000 0000 0000 - 0000 0000 0000 0004
> Jan 25 04:36:29 vnchost guacd[105538]: Connected to Server "unknown (LibVNCServer 0.9.9)"
> Jan 25 04:36:29 vnchost guacd[105538]: Connection aborted
> Jan 25 04:36:30 vnchost guacd[105538]: Client disconnected
> Jan 25 04:36:30 vnchost kernel: guacd[105538]: segfault at 1000003f8 ip 00007fbfce7bdc24 sp 00007ffe0d31c990 error 4 in libguac-client-vnc.so.0.0.0[7fbfce7b2000+f000]
> Jan 25 04:36:30 vnchost abrt-hook-ccpp: Process 105538 (guacd) of user 0 killed by SIGSEGV - dumping core
> Jan 25 04:36:30 vnchost abrt-server: Executable '/usr/local/sbin/guacd' doesn't belong to any package and ProcessUnpackaged is set to 'no'
> Jan 25 04:36:43 vnchost guacd[105232]: Client is not responding.
> Jan 25 04:36:43 vnchost guacd[105232]: Client disconnected
> Jan 25 04:36:43 vnchost kernel: guacd[105232]: segfault at 1000003f8 ip 00007fbfce7bdc24 sp 00007ffe0d31c990 error 4 in libguac-client-vnc.so.0.0.0[7fbfce7b2000+f000]
> Jan 25 04:36:43 vnchost abrt-hook-ccpp: Process 105232 (guacd) of user 0 killed by SIGSEGV - ignoring (repeated crash)
> {code}
> Spring-boot application log here
> {code:java}
> 2019-01-25 12:32:58.441 DEBUG 1 --- [nio-8080-exec-6] o.a.guacamole.net.InetGuacamoleSocket : Connecting to guacd at vnchost:4832.
> 2019-01-25 12:32:58.961 DEBUG 1 --- [ Thread-6] .g.b.g.w.e.MyGuacamoleWebSocketEndPoint : Open tunnel on port: '5900', uuid: '2eba77c8-2f74-42a3-8ca5-4cf882ee3653' and connection_id: '$7d545e7e-0a29-40e5-a4a3-9964fa07b22b'.
> 2019-01-25 12:36:28.785 DEBUG 1 --- [nio-8080-exec-2] o.a.guacamole.net.InetGuacamoleSocket : Connecting to guacd at vnchost:4832.
> 2019-01-25 12:36:29.137 DEBUG 1 --- [ Thread-8] .g.b.g.w.e.MyGuacamoleWebSocketEndPoint : Open tunnel on port: '5902', uuid: '67446967-2e8e-42d7-9c73-68c2a80a270b' and connection_id: '$6fd98484-1dd0-4c66-aa04-6c358cd30548'.
> 2019-01-25 12:36:30.510 DEBUG 1 --- [ Thread-8] o.a.g.w.GuacamoleWebSocketTunnelEndpoint : Connection to guacd closed.
> org.apache.guacamole.GuacamoleConnectionClosedException: Connection to guacd is closed.
> at org.apache.guacamole.io.ReaderGuacamoleReader.read(ReaderGuacamoleReader.java:183) ~[guacamole-common-0.9.14.jar!/:na]
> at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint$2.run(GuacamoleWebSocketTunnelEndpoint.java:160) ~[guacamole-common-0.9.14.jar!/:na]
> Caused by: java.net.SocketException: Connection reset
> at java.net.SocketInputStream.read(SocketInputStream.java:210) ~[na:1.8.0_191]
> at java.net.SocketInputStream.read(SocketInputStream.java:141) ~[na:1.8.0_191]
> at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284) ~[na:1.8.0_191]
> at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326) ~[na:1.8.0_191]
> at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178) ~[na:1.8.0_191]
> at java.io.InputStreamReader.read(InputStreamReader.java:184) ~[na:1.8.0_191]
> at org.apache.guacamole.io.ReaderGuacamoleReader.read(ReaderGuacamoleReader.java:169) ~[guacamole-common-0.9.14.jar!/:na]
> ... 1 common frames omitted
> 2019-01-25 12:36:30.511 DEBUG 1 --- [ Thread-8] .g.b.g.w.e.MyGuacamoleWebSocketEndPoint : Close tunnel on port: '5902', uuid: '67446967-2e8e-42d7-9c73-68c2a80a270b' and connection_id: '$6fd98484-1dd0-4c66-aa04-6c358cd30548'.
> 2019-01-25 12:36:30.511 DEBUG 1 --- [ Thread-8] o.a.guacamole.net.InetGuacamoleSocket : Closing socket to guacd.
> 2019-01-25 12:36:30.627 DEBUG 1 --- [nio-8080-exec-4] o.a.g.w.GuacamoleWebSocketTunnelEndpoint : Connection to guacd closed.
> org.apache.guacamole.GuacamoleConnectionClosedException: Connection to guacd is closed.
> at org.apache.guacamole.io.WriterGuacamoleWriter.write(WriterGuacamoleWriter.java:64) ~[guacamole-common-0.9.14.jar!/:na]
> at org.apache.guacamole.io.WriterGuacamoleWriter.write(WriterGuacamoleWriter.java:73) ~[guacamole-common-0.9.14.jar!/:na]
> at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint.onMessage(GuacamoleWebSocketTunnelEndpoint.java:221) ~[guacamole-common-0.9.14.jar!/:na]
> at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint$1.onMessage(GuacamoleWebSocketTunnelEndpoint.java:129) [guacamole-common-0.9.14.jar!/:na]
> at org.apache.guacamole.websocket.GuacamoleWebSocketTunnelEndpoint$1.onMessage(GuacamoleWebSocketTunnelEndpoint.java:125) [guacamole-common-0.9.14.jar!/:na]
> at org.apache.tomcat.websocket.WsFrameBase.sendMessageText(WsFrameBase.java:394) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.server.WsFrameServer.sendMessageText(WsFrameServer.java:119) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.WsFrameBase.processDataText(WsFrameBase.java:495) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:294) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:133) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:82) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.server.WsFrameServer.doOnDataAvailable(WsFrameServer.java:171) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.server.WsFrameServer.notifyDataAvailable(WsFrameServer.java:151) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.upgradeDispatch(WsHttpUpgradeHandler.java:148) [tomcat-embed-websocket-8.5.31.jar!/:8.5.31]
> at org.apache.coyote.http11.upgrade.UpgradeProcessorInternal.dispatch(UpgradeProcessorInternal.java:54) [tomcat-embed-core-8.5.31.jar!/:8.5.31]
> at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:53) [tomcat-embed-core-8.5.31.jar!/:8.5.31]
> at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790) [tomcat-embed-core-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1468) [tomcat-embed-core-8.5.31.jar!/:8.5.31]
> at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.31.jar!/:8.5.31]
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_191]
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_191]
> at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.31.jar!/:8.5.31]
> at java.lang.Thread.run(Thread.java:748) [na:1.8.0_191]
> Caused by: java.net.SocketException: Socket closed
> at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118) ~[na:1.8.0_191]
> at java.net.SocketOutputStream.write(SocketOutputStream.java:155) ~[na:1.8.0_191]
> at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221) ~[na:1.8.0_191]
> at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291) ~[na:1.8.0_191]
> at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295) ~[na:1.8.0_191]
> at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) ~[na:1.8.0_191]
> at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) ~[na:1.8.0_191]
> at org.apache.guacamole.io.WriterGuacamoleWriter.write(WriterGuacamoleWriter.java:58) ~[guacamole-common-0.9.14.jar!/:na]
> ... 22 common frames omitted
> {code}
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