Re: [Playerstage-users] Player/Stage Shutdown

[Rich M. <jp...@gm...>]

> -----Original Message-----
> From: Jim Duda [mailto:ji...@du...]
> Sent: Friday, July 01, 2011 10:05 AM
> To: pla...@li...
> Subject: [Playerstage-users] Player/Stage Shutdown
> 
> Each time I run some client program which attaches to a Player/Stage
> server, I find
> that I need to restart the server before I can run the client again.
> Is this the
> expected behavior?
> 
> Example Server:
> 
> Registering driver
> Player v.3.0.2
> 
> * Part of the Player/Stage/Gazebo Project
> [http://playerstage.sourceforge.net].
> * Copyright (C) 2000 - 2009 Brian Gerkey, Richard Vaughan, Andrew
> Howard,
> * Nate Koenig, and contributors. Released under the GNU General Public
> License.
> * Player comes with ABSOLUTELY NO WARRANTY.  This is free software, and
> you
> * are welcome to redistribute it under certain conditions; see COPYING
> * for details.
> 
> loading plugin stageplugin
> invoking player_driver_init()...
>  Stage driver plugin init
> 
>  ** Stage plugin v4.0.0 **
>  * Part of the Player Project [http://playerstage.sourceforge.net]
>  * Copyright 2000-2009 Richard Vaughan, Brian Gerkey and contributors.
>  * Released under the GNU General Public License v2.
> 
> success
>  Stage plugin:  6665.simulation.0 is a Stage world
>  [Loading ./sim.world][Include map.inc]f: ./sim.world
> 
> 
>  Stage plugin:  6665.position2d.0 is "arduino"
>  Stage plugin:  6665.ranger.0 is "arduino.ranger:0"
> ./sim.cfg:53 warning: field [safety_dist] is defined but not used
> listening on 6665
> Listening on ports: 6665
> accepted TCP client 0 on port 6665, fd 7
> stage driver setup
> warn: Stage ignores motor power state (1) (/home/jduda/software/Stage-
> 4.0.0-src/libstageplugin/p_position.cc ProcessMessage)
> recv() read zero bytes
> failed to read from client 0
> closing TCP connection to client 0 on port 6665
> Stage driver has been shutdown
> 
> When I run a client, the client does what it needs to do and completes.
> I don't understand why
> the Stage driver needs to shut down.  What is it attempting to read
> from?
> 
> Thanks,
> 
> Jim
> 

This is a known regression in Stage 4.0.0.  The fix was in Stage 3.2.2, and
should also be in the latest git version of Stage.

Rich