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Posted to issues@guacamole.apache.org by "Rui Wang (JIRA)" <ji...@apache.org> on 2019/01/26 01:02:00 UTC
[jira] [Created] (GUACAMOLE-719) Guacamole: Multiple simultaneous
vnc connections over websocket close each other
Rui Wang created GUACAMOLE-719:
----------------------------------
Summary: 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: guacd
Affects Versions: 0.9.14
Reporter: Rui Wang
{code:java}
{code}
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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