Hopefully you can just have the firewall updated to allow communication
through the ports that STAF uses (6500, 6550 by default).

Note that more recent versions of STAF would have given you a better error
in this scenario, something like:

$ STAF <remote_ip> SEM REQUEST MUTEX test
Error submitting request, RC: 16
Additional info
---------------
An error occurred when the SEM service on machine 'remote_ip' attempted to
register for garbage collection notification on endpoint 'ssl://
<your-local-machine>@6550'.  Reason: STAFConnectionProviderConnect: Error
resolving  host name: Unknown host name: <your-local-machine>,
gethostbyname_r(): 22,
 Endpoint: ssl://<your-local-machine>@6550

Thanks,
David


                                                                       
 David Bender          11501 Burnet Rd.   Phone (T/L): 1-512-286-5315  
 STAF/STAX Development Bldg. 903-5B002    (363-5315)                   
                       Austin, TX         ITN: 23635315                
 IBM Software Group,   78758-3400         Email: bda...@us.ibm.com     
 WPLC                                                                  
                                                                       
                                                                       






                                                                       
  From:       "Yanping Wang" <ypw...@yahoo-inc.com>                    
                                                                       
  To:         David Bender/Austin/i...@ibmus                            
                                                                       
  Cc:         staf-users@lists.sourceforge.net                         
                                                                       
  Date:       04/19/2010 08:12 PM                                      
                                                                       
  Subject:    Re: [staf-users] mutex garbage collect                   
                                                                       





Hi David,

No, I am not running the latest STAF. I tried 3.3.1 and 3.3.5. Both give me
the same results.

the root cause of this problem is the remote machine cannot do staf ping to
my local.

I finally figured out that this a limitation because the machine is behind
other firewall.

Thanks,
Jeff

From: David Bender [mailto:bda...@us.ibm.com]
Sent: Monday, April 19, 2010 5:18 PM
To: Yanping Wang
Cc: staf-users@lists.sourceforge.net
Subject: Re: [staf-users] mutex garbage collect



Hi,

Are you running the latest versions of STAF (V3.4.1) on both machines?

STAF local MISC VERSION
STAF remote_ip MISC VERSION

Can the remote machine communicate to your local machine via STAF? On the
remote machine, does a "STAF <your-local-machine> PING PING" work? You need
to make sure that works in order for the garbage collection to work
correctly.

Thanks,
David


                                                                       
 David Bender          11501 Burnet Rd.   Phone (T/L): 1-512-286-5315  
 STAF/STAX Development Bldg. 903-5B002    (363-5315)                   
                       Austin, TX         ITN: 23635315                
 IBM Software Group,   78758-3400         Email: bda...@us.ibm.com     
 WPLC                                                                  
                                                                       





Inactive hide details for "Yanping Wang" ---04/19/2010 07:09:46 PM---Hi,
"Yanping Wang" ---04/19/2010 07:09:46 PM---Hi,
                                                                       
                                                                       
 From:                "Yanping Wang" <ypw...@yahoo-inc.com>            
                                                                       
                                                                       
 To:                  <staf-users@lists.sourceforge.net>               
                                                                       
                                                                       
 Date:                04/19/2010 07:09 PM                              
                                                                       
                                                                       
 Subject:             [staf-users] mutex garbage collect               
                                                                       





Hi,

I tried the sem service according to the user guide.

C:\>STAF local SEM REQUEST MUTEX Mutex1
this works fine and the mutex is garbage collected. However, if I change
the local to an IP address of the other machine.

C:\>STAF remote_ip SEM REQUEST MUTEX Mutex1

The mutex is created but is not garbage collected.

Does anyone know how to make garbage collection working?


Thanks,
Jeff Wang
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