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Posted to commits@guacamole.apache.org by "Michael Jumper (JIRA)" <ji...@apache.org> on 2018/09/09 18:46:00 UTC
[jira] [Commented] (GUACAMOLE-620) User input thread automatically
exit with an instruction parse error
[ https://issues.apache.org/jira/browse/GUACAMOLE-620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16608535#comment-16608535 ]
Michael Jumper commented on GUACAMOLE-620:
------------------------------------------
Rather than a human-readable interpretation of what is being sent, with instructions on each line, it would be helpful to see a packet capture of the traffic between the web application and guacd. That will contain the absolute raw data received by each side.
Between guacd and the browser, are you using the Guacamole web application as written or is something custom sitting in front of guacd?
> User input thread automatically exit with an instruction parse error
> --------------------------------------------------------------------
>
> Key: GUACAMOLE-620
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-620
> Project: Guacamole
> Issue Type: Bug
> Components: libguac
> Affects Versions: 0.9.14
> Reporter: Changkun Ou
> Priority: Major
>
> Remote desktop protocol: RDP
> User experience:
> A user operates a few minutes, then the desktop display froze. A browser refresh can connect to the server desktop again.
> Under the hood:
> Observed `guacd` log shows the user is disconnected.
> A warning level log shows that {{guac_user_input_thread}} automatically exit with an instruction parser error:
> {code}
> Guacamole connection failure: Instruction parse error
> {code}
> Here is a happening context captured in a browser, where the server sends {{10.disconnect}} since last {{sync}} instruction:
>
> {code}
> server: 4.sync,8.24744179;
> client: 4.sync,8.24744179;
> client: 5.mouse,3.667,3.459,1.1;
> client: 5.mouse,3.627,3.470,1.1;
> client: 5.mouse,3.597,3.470,1.1;
> client: 5.mouse,3.493,3.442,1.1;
> server: 4.copy,1.0,3.241,3.368,3.617,3.355,2.14,1.0,1.0,3.377;
> server: 4.copy,1.0,3.241,3.366,3.616,1.2,2.14,1.0,1.0,3.375;
> server: 4.copy,1.0,3.241,3.365,3.615,1.1,2.14,1.0,1.0,3.374;
> server: 4.copy,1.0,3.241,3.364,3.613,1.1,2.14,1.0,1.0,3.373;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.220,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.284,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.348,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.412,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.476,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.540,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.604,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.668,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.732,3.364;
> server: 4.copy,4.-113,1.0,1.0,2.58,1.1,2.14,1.0,3.796,3.364;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.218,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.282,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.346,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.410,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.474,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.538,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.602,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.666,3.365;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.730,3.365;
> server: 4.copy,4.-114,1.0,1.0,2.62,1.1,2.14,1.0,3.794,3.365;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.217,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.281,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.345,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.409,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.473,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.537,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.601,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.665,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.729,3.366;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.793,3.366;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.216,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.280,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.344,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.408,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.472,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.536,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.600,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.664,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.728,3.368;
> server: 4.copy,4.-594,1.0,1.0,2.64,1.5,2.14,1.0,3.792,3.368;
> server: 3.img,1.3,2.14,1.0,9.image/png,3.856,3.368;
> server: 4.blob,1.3,112.iVBORw0KGgoAAAANSUhEUgAAAAIAAAAFAQMAAABVfa/fAAAAA1BMVEUQIDF/BroyAAAAC0lEQVQImWNggAEAAAoAAWeL7ekAAAAASUVORK5CYII=;
> server: 3.end,1.3;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.613,3.373;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.677,3.373;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.741,3.373;
> server: 4.copy,4.-634,1.0,1.0,2.53,1.1,2.14,1.0,3.805,3.373;
> server: 4.copy,4.-634,1.0,1.0,2.53,1.1,2.14,1.0,3.805,3.373;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.679,3.374;
> server: 4.copy,3.-25,1.0,1.0,2.64,1.1,2.14,1.0,3.743,3.374;
> server: 4.copy,4.-635,1.0,1.0,2.51,1.1,2.14,1.0,3.807,3.374;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.616,3.375;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.680,3.375;
> server: 4.copy,3.-26,1.0,1.0,2.64,1.2,2.14,1.0,3.744,3.375;
> server: 4.copy,4.-639,1.0,1.0,2.50,1.2,2.14,1.0,3.808,3.375;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.617,3.377;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.681,3.377;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.745,3.377;
> server: 4.copy,4.-636,1.0,1.0,2.49,2.63,2.14,1.0,3.809,3.377;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.617,3.440;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.681,3.440;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.745,3.440;
> server: 4.copy,4.-636,1.0,1.0,2.49,2.63,2.14,1.0,3.809,3.440;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.617,3.503;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.681,3.503;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.745,3.503;
> server: 4.copy,4.-636,1.0,1.0,2.49,2.63,2.14,1.0,3.809,3.503;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.617,3.566;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.681,3.566;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.745,3.566;
> server: 4.copy,4.-636,1.0,1.0,2.49,2.63,2.14,1.0,3.809,3.566;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.617,3.629;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.681,3.629;
> server: 4.copy,2.-4,1.0,1.0,2.64,2.63,2.14,1.0,3.745,3.629;
> server: 4.copy,4.-636,1.0,1.0,2.49,2.63,2.14,1.0,3.809,3.629;
> server: 4.copy,4.-822,1.0,1.0,2.64,2.40,2.14,1.0,3.617,3.692;
> server: 4.copy,4.-822,1.0,1.0,2.64,2.40,2.14,1.0,3.681,3.692;
> server: 4.copy,4.-822,1.0,1.0,2.64,2.40,2.14,1.0,3.745,3.692;
> server: 3.img,1.3,2.14,1.0,9.image/png,3.809,3.692;
> server: 4.blob,1.3,116.iVBORw0KGgoAAAANSUhEUgAAADEAAAAoAQMAAABti4AMAAAAA1BMVEUQIDF/BroyAAAADUlEQVQYlWNgGAWUAAABQAABuwBcGQAAAABJRU5ErkJggg==;
> server: 3.end,1.3;
> server: 4.sync,8.24744258;
> server: 7.dispose,5.-1017;
> server: 10.disconnect;
> client: 10.disconnect;
> {code}
>
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