From unknown Thu Apr 09 20:37:02 2026 X-Loop: owner@bugs.x2go.org Subject: Bug#1294: Can't reconnect to existing x2go session Reply-To: "Koozer, Craig" , 1294@bugs.x2go.org Resent-From: "Koozer, Craig" Resent-To: x2go-dev@lists.x2go.org Resent-CC: X2Go Developers X-Loop: owner@bugs.x2go.org Resent-Date: Wed, 02 May 2018 22:00:02 +0000 Resent-Message-ID: Resent-Sender: owner@bugs.x2go.org X-X2Go-PR-Message: report 1294 X-X2Go-PR-Package: x2goagent X-X2Go-PR-Keywords: Received: via spool by submit@bugs.x2go.org id=B.15252983119177 (code B); Wed, 02 May 2018 22:00:02 +0000 Received: (at submit) by bugs.x2go.org; 2 May 2018 21:58:31 +0000 X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on ymir.das-netzwerkteam.de X-Spam-Level: X-Spam-Status: No, score=-1.9 required=3.0 tests=BAYES_00,HTML_MESSAGE, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.1 Received: from localhost (localhost [127.0.0.1]) by ymir.das-netzwerkteam.de (Postfix) with ESMTP id 7A75F5DAE9 for ; Wed, 2 May 2018 23:58:19 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at ymir.das-netzwerkteam.de Received: from ymir.das-netzwerkteam.de ([127.0.0.1]) by localhost (ymir.das-netzwerkteam.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id VqrEpCK6XXhZ for ; 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Wed, 2 May 2018 21:51:42 +0000 From: "Koozer, Craig" To: "submit@bugs.x2go.org" Thread-Topic: Can't reconnect to existing x2go session Thread-Index: AQHT4kBnrbcWLLYZXkugqCqS5R7IhaQc9tHD Date: Wed, 2 May 2018 21:51:42 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [12.246.223.246] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR10MB1993;7:3qWTfVtJ2+/eb+dBioYJpGMUzXoVHdf+IiCwJbwvvIlL5qeUAYWeoYRORTbryF8kuC5ZL5Uzud4MqmAV8/o2IQYpiGhGR8KUqtpBDIth8913RVVNZC0y9SeP5CGgFxYFz3Tuj7DzZR4oRwD151bMbR6cj3q65Sn08KKYcgFmD5uZrqt8kMHytNo5gVMgNYHPoOEPbEUcVqDsBT60xRpj6jesoxG3TTtX3LfNKM1R2ZA17GGBrvgrGd8PJA8wX/3Q;20:OodPh6Pdezzf1L7ecb2ztwyiI7oy81HEuT137Qik3oMAQknVkYhDfXBCNxTfMwrE3h2Xy9ig3l/waeD8Ru3uQF67PGcGedfeXnBzjKThVrMlJdLOhwI8E+tllAxSkKORHEfOFO7gs1mrA7EEpuxMRYGpBvvwOOTl/p/slZJkFJ8= x-ms-exchange-antispam-srfa-diagnostics: SOS; x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7153060)(7193020);SRVR:DM5PR10MB1993; 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x-microsoft-antispam-message-info: 9RkHlpX068EEdwEG9cRwIX6T8QzTkx0AhmOFxhpMN3xqB+tk6LVfkNdzXeXlNNvylPC2GlROVxCkF4PItyJAV/2TJoBF4x0p74GuSXYQkKsLrCc2APSukDvNL4UGzwYzhm1fm/TFeVC9cgw74URD96gDlNmuMOFVd8FZcIQ468qt7BLpZCEdW8sGP/AMMrgJ spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: 383f6210-7b18-4c8d-8111-08d5b076e48b X-OriginatorOrg: netsuite.com X-MS-Exchange-CrossTenant-Network-Message-Id: 383f6210-7b18-4c8d-8111-08d5b076e48b X-MS-Exchange-CrossTenant-originalarrivaltime: 02 May 2018 21:51:42.9145 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 50dcfda3-55fe-434c-9a75-d4d981a1815e X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR10MB1993 X-MC-Unique: PRlpCdHNO_2cWHiTXbMxbQ-1 Content-Type: multipart/alternative; boundary="_000_DM5PR10MB1627A6F71AAB4883636FDC05D1800DM5PR10MB1627namp_" --_000_DM5PR10MB1627A6F71AAB4883636FDC05D1800DM5PR10MB1627namp_ Content-Type: text/plain; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable Package: x2goagent Version: 3.5.0.33 I'm having problems reconnecting to any existing sessions on a specific x2g= oserver instance from any client I've tried. If I kill the existing sessio= n using x2goterminate-session and create a new one the new one connects wit= h no problems, but if then I disconnect from it and attempt to re-connect (= even from the same client), then again I get the same problem -- client doe= s not connect, and message is displayed in client "The remote proxy closed= the connection while negotiating the session. This may be due to the wrong= authentication credentials passed to the server.". I believe this started happening after upgrading to latest client and serve= r versions on the server, but downgrading the server version or clients con= necting to server or both did not make the problem go away. I also tried r= emoving ~/.x2go and ~/.x2goclient directories on client and server and allo= w them to be recreated, but this did not change behavior. I enabled debug from client and server, and have saved the complete log ent= ries for /var/log/messages on server, and client out on reconnect if you th= ink that would be helpful, but what I've included below is the only thing t= hat looks like an error. all other config settings are as installed, no ot= her manual changes were made. from x2goclient --debug std. out: x2go-DEBUG-../src/sshprocess.cpp:372> Starting tunnel via SshProcess object= 2: "localhost":59190 -> "localhost":60190 x2go-DEBUG-../src/onmainwindow.cpp:5612> "Starting NX proxy, command: nxpro= xy -S nx/nx,options=3D/home/ckoozer/.x2go/S-ckoozer-56-1525261822_stDXFCE_d= p24/options:56" x2go-DEBUG-../src/sshprocess.cpp:157> Direct tunnel: waiting for connection= s on "localhost":60190 x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: " NXPROXY - Version 3.5.0 Copyright (C) 2001, 2010 NoMachine. See http://www.nomachine.com/ for more information. Info: Proxy running in client mode with pid '3938'. Session: Starting session at 'Wed May 2 11:48:25 2018'. Info: Using abstract X11 socket in kernel namespace for accessing DISPLAY= =3D:0. " x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: "Info: Conn= ecting to remote host 'localhost:60190'. Info: Connection to remote proxy 'localhost:60190' established. " x2go-DEBUG-../src/sshprocess.cpp:109> New TCP connection. x2go-DEBUG-../src/sshprocess.cpp:114> New socket: 15 x2go-DEBUG-../src/sshmasterconnection.cpp:1517> Creating new channel. x2go-DEBUG-../src/sshmasterconnection.cpp:1521> New channel:0x7fb888015870 x2go-DEBUG-../src/sshmasterconnection.cpp:1527> Forwarding new channel, loc= al port: 58952 x2go-DEBUG-../src/sshmasterconnection.cpp:1545> New channel forwarded. x2go-DEBUG-../src/sshmasterconnection.cpp:1704> "channel_write failed." - "= Remote channel is closed" x2go-DEBUG-../src/sshprocess.cpp:463> I/O error: "channel_write failed."" -= Remote channel is closed" (2). x2go-DEBUG-../src/sshmasterconnection.cpp:1747> EOF sent. x2go-DEBUG-../src/sshmasterconnection.cpp:1751> Channel closed. x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: "Error: The= remote NX proxy closed the connection. " x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: "Error: Fai= lure negotiating the session in stage '7'. Error: Wrong version or invalid session authentication cookie. Session: Terminating session at 'Wed May 2 11:48:25 2018'. Session: Session terminated at 'Wed May 2 11:48:25 2018'. " x2go-DEBUG-../src/onmainwindow.cpp:5928> Deleting Proxy. Server details: [ckoozer@ckoozer-linux ~]$ uname -a Linux ckoozer-linux 3.10.0-862.el7.x86_64 #1 SMP Wed Apr 11 11:40:58 PDT 20= 18 x86_64 x86_64 x86_64 GNU/Linux [ckoozer@ckoozer-linux ~]$ rpm -qa | grep nx nxagent-3.5.0.33-4.el7.x86_64 nxproxy-3.5.0.33-4.el7.x86_64 lynx-2.8.8-0.3.dev15.el7.x86_64 inx-icon-theme-0.6-2.3.noarch nx-libs-3.5.0.33-4.el7.x86_64 inxi-2.3.56-1.el7.noarch [ckoozer@ckoozer-linux ~]$ rpm -qa | grep x2go x2goserver-xsession-4.0.1.22-2.el7.x86_64 x2goagent-3.5.0.33-4.el7.x86_64 x2goclient-4.1.1.1-1.el7.x86_64 x2goserver-4.0.1.22-2.el7.x86_64 Client details (but same behavior from multiple clients and x2goclient vers= ions, including windows client): [ckoozer@ckoozer ~]$ uname -a Linux ckoozer 4.15.16-200.fc26.x86_64 #1 SMP Mon Apr 9 17:49:29 UTC 2018 x8= 6_64 x86_64 x86_64 GNU/Linux [ckoozer@ckoozer ~]$ rpm -qa | grep nx nxagent-3.5.0.33-4.fc26.x86_64 nxproxy-3.5.0.33-4.fc26.x86_64 nx-libs-3.5.0.33-4.fc26.x86_64 [ckoozer@ckoozer ~]$ rpm -qa | grep x2go x2goclient-4.1.0.0-1.fc26.x86_64 (same behavior with latest version of cl= ient as well) x2goagent-3.5.0.33-4.fc26.x86_64 x2goserver-xsession-4.0.1.22-2.fc26.x86_64 x2goserver-4.0.1.22-2.fc26.x86_64 [ckoozer@ckoozer-linux ~]$ which nxagent /usr/bin/nxagent [ckoozer@ckoozer-linux ~]$ which x2goagent /usr/bin/x2goagent [ckoozer@ckoozer-linux ~]$ locate nxagent /etc/nxagent /etc/nxagent/keystrokes.cfg /etc/nxagent/nxagent.keyboard /etc/nxagent/rgb /usr/bin/nxagent /usr/lib64/nx/bin/nxagent /usr/share/man/man1/nxagent.1.gz /usr/share/pixmaps/nxagent.xpm [ckoozer@ckoozer-linux ~]$ locate x2goagent /etc/x2go/x2goagent.keyboard /etc/x2go/x2goagent.options /usr/bin/x2goagent /usr/lib64/x2go/bin/x2goagent /usr/share/man/man1/x2goagent.1.gz /usr/share/x2go/versions/VERSION.x2goagent [ckoozer@ckoozer-linux ~]$ which nxproxy /usr/bin/nxproxy [ckoozer@ckoozer-linux ~]$ locate nxproxy /usr/bin/nxproxy /usr/lib64/nx/bin/nxproxy /usr/share/man/man1/nxproxy.1.gz [ckoozer@ckoozer-linux ~]$ nxproxy -v NXPROXY - Version 3.5.0.33 thanks! craig@netsuite.com --_000_DM5PR10MB1627A6F71AAB4883636FDC05D1800DM5PR10MB1627namp_ Content-Type: text/html; charset=WINDOWS-1252 Content-Transfer-Encoding: quoted-printable 

Package: x2goagent=0AVersion: 3.5.0.33


I'm having problems reconnecting to any existing sessions on a s= pecific x2goserver instance from any client I've tried.  If I kill the= existing session using x2goterminate-session and create a new one the new one connects with no problems, but if then I discon= nect from it and attempt to re-connect (even from the same client), then ag= ain I get the same problem -- client does not connect, and message is displ= ayed in client  "The remote proxy closed the connection while negotiating the session. This may be due to t= he wrong authentication credentials = passed to the server.".


I believe this started happening after upgrading to latest client and serv= er versions on the server, but downgrading the server version or clients co= nnecting to server or both did not make the problem go away.  I also tried removing ~/.= x2go and ~/.x2goclient directories on client and server and allow them to b= e recreated, but this did not change behavior.


I enabled debug from client and server, and have saved= the complete log entries for /var/log/messages on server, and client out = on reconnect if you think that would be helpful, but what I've included bel= ow is the only thing that looks like an error.  all other config = settings are as installed, no other manual changes were made.


from x2goclient --debug std. out= :


x2go-DEBUG-../src/sshprocess.cpp:372> Starting tunnel via SshProces= s object 2: "localhost":59190 -> "localhost":60190

x2go-DEBUG-../src/onmainwindow.cpp:5612> "Starting NX proxy, c= ommand: nxproxy -S nx/nx,options=3D/home/ckoozer/.x2go/S-ckoozer-56-1525261= 822_stDXFCE_dp24/options:56"
x2go-DEBUG-../src/sshprocess.cpp:157> Direct tunnel: waiting for co= nnections on "localhost":60190
x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: &qu= ot;
NXPROXY - Version 3.5.0

Copyright (C) 2001, 2010 NoMachine.
See http://www.nomachine.com/ for more information.

Info: Proxy running in client mode with pid '3938'.
Session: Starting session at 'Wed May  2 11:48:25 2018'.
Info: Using abstract X11 socket in kernel namespace for accessing DISP= LAY=3D:0.
"
x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: &qu= ot;Info: Connecting to remote host 'localhost:60190'.
Info: Connection to remote proxy 'localhost:60190' established.
"
x2go-DEBUG-../src/sshprocess.cpp:109> New TCP connection.
x2go-DEBUG-../src/sshprocess.cpp:114> New socket: 15
x2go-DEBUG-../src/sshmasterconnection.cpp:1517> Creating new channe= l.

x2go-DEBUG-../src/sshmasterconnection.cpp:1521> New channel:0x7fb88= 8015870

x2go-DEBUG-../src/sshmasterconnection.cpp:1527> Forwarding new chan= nel, local port: 58952

x2go-DEBUG-../src/sshmasterconnection.cpp:1545> New channel forward= ed.

x2go-DEBUG-../src/sshmasterconnection.cpp:1704> "channel_write fail= ed." - "Remote channel is closed"

x2go-DEBUG-../src/sshprocess.cpp:463> I/O error: "channel_write fai= led."" - Remote channel is closed" (2).
x2go-DEBUG-../src/sshmasterconnection.cpp:1747> EOF sent.
x2go-DEBUG-../src/sshmasterconnection.cpp:1751> Channel closed.
x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: "Er= ror: The remote NX proxy closed the connection.
"
x2go-DEBUG-../src/onmainwindow.cpp:6071> Proxy wrote on stderr: "Er= ror: Failure negotiating the session in stage '7'.
Error: Wrong version or invalid session authentication cookie.
Session: Terminating session at 'Wed May  2 11:48:25 2018'.
Session: Session terminated at 'Wed May  2 11:48:25 2018'.
"
x2go-DEBUG-../src/onmainwindow.cpp:5928> Deleting Proxy.

S= erver details:

[ckoozer@ckoozer-linux ~]$ uname -a
Linux ckoozer-linux 3.10.0-862.el7.x86_64 #1 SMP Wed Apr 11 11:40:58 P= DT 2018 x86_64 x86_64 x86_64 GNU/Linux
[ckoozer@ckoozer-linux ~]$ rpm -qa | grep nx
nxagent-3.5.0.33-4.el7.x86_64
nxproxy-3.5.0.33-4.el7.x86_64
lynx-2.8.8-0.3.dev15.el7.x86_64
inx-icon-theme-0.6-2.3.noarch
nx-libs-3.5.0.33-4.el7.x86_64
inxi-2.3.56-1.el7.noarch
[ckoozer@ckoozer-linux ~]$ rpm -qa | grep x2go
x2goserver-xsession-4.0.1.22-2.el7.x86_64
x2goagent-3.5.0.33-4.el7.x86_64
x2goclient-4.1.1.1-1.el7.x86_64
x2goserver-4.0.1.22-2.el7.x86_64

Client details (but same behavior from multiple clients and x2goclient= versions, including windows client):
[ckoozer@ckoozer ~]$ uname -a
Linux ckoozer 4.15.16-200.fc26.x86_64 #1 SMP Mon Apr 9 17:49:29 UTC 20= 18 x86_64 x86_64 x86_64 GNU/Linux
[ckoozer@ckoozer ~]$ rpm -qa | grep nx
nxagent-3.5.0.33-4.fc26.x86_64
nxproxy-3.5.0.33-4.fc26.x86_64
nx-libs-3.5.0.33-4.fc26.x86_64
[ckoozer@ckoozer ~]$ rpm -qa | grep x2g= o
x2goclient-4.1.0.0-1.fc26.x86_64   (same behavior with lates= t version of client as well)
x2goagent-3.5.0.33-4.fc26.x86_64
x2goserver-xsession-4.0.1.22-2.fc26.x86_64
x2goserver-4.0.1.22-2.fc26.x86_64

[ckoozer@ckoozer-linux ~]$ which nxagent
/usr/bin/nxagent
[ckoozer@ckoozer-linux ~]$ which x2goagent
/usr/bin/x2goagent
[ckoozer@ckoozer-linux ~]$ locate nxagent
/etc/nxagent
/etc/nxagent/keystrokes.cfg
/etc/nxagent/nxagent.keyboard
/etc/nxagent/rgb
/usr/bin/nxagent
/usr/lib64/nx/bin/nxagent
/usr/share/man/man1/nxagent.1.gz
/usr/share/pixmaps/nxagent.xpm
[ckoozer@ckoozer-linux ~]$ locate x2goagent
/etc/x2go/x2goagent.keyboard
/etc/x2go/x2goagent.options
/usr/bin/x2goagent
/usr/lib64/x2go/bin/x2goagent
/usr/share/man/man1/x2goagent.1.gz
/usr/share/x2go/versions/VERSION.x2goagent
[ckoozer@ckoozer-linux ~]$ which nxproxy
/usr/bin/nxproxy
[ckoozer@ckoozer-linux ~]$ locate nxproxy
/usr/bin/nxproxy
/usr/lib64/nx/bin/nxproxy
/usr/share/man/man1/nxproxy.1.gz
[ckoozer@ckoozer-linux ~]$ nxproxy -v
NXPROXY - Version 3.5.0.33

thanks!


craig@n= etsuite.com


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