Are you experiencing a STAF service request hanging?
You can't set a timeout on socket read operations. In the next version of
STAF (planned to be released as the end of June), we added timeouts on
sockets, e.g. on a recv(), but we could only do this at the beginning of
submitting a STAF request, not while waiting for a result as some STAF
service requests can wait indefinitely for a response such as:
STAF machine QUEUE GET WAIT
STAF machine PROCESS START COMMAND yourCommand WAIT
Note that there is some tuning you can do that applies to when STAF
attempts to connect to a remote system as described in the STAF User's
Guide in the following sections (but this won't help you if the problem
you're experiencing occurs after connecting to a machine):
4.7 Operational parameters
CONNECTATTEMPTS specifies the maximum number of times to attempt to
connect to a remote system. The default is 2. Note that a trace warning
message is generated for each failed attempt if the Warning trace point is
enabled. You may also change this setting dynamically using the MISC
service's SET command.
CONNECTRETRYDELAY specifies the maximum time in milliseconds to wait after
a failed connection attempt to a remote system before trying to connect
again (if the maximum number of times to attempt to connect to a remote
system has not been reached yet). The default is 1000 (i.e., 1 second).
You may also change this setting dynamically using the MISC service's SET
command.
4.3.2 STAFTCP Connection Provider
The STAFTCP connection provider supports the following OPTIONs:
CONNECTTIMEOUT=<Number> specifies the maximum time in milliseconds to wait
for a connection attempt to a remote system to succeed. The default is
5000 (5 seconds). You may need to increase this value if you are
consistently receiving return code 16 when trying to communicate with
distant STAF systems. Note that the total time to wait for a connection to
a remote system to succeed is (CONNECTTIMEOUT * CONNECTATTEMPTS) +
(CONNECTRETRYDELAY * (CONNECTATTEMPTS - 1)). If using the defaults, the
maximum total time to wait for a connection to a remote system to succeed
is (5000 * 2) + (1000 * 1), which equals 11 seconds. The CONNECTATTEMPTS
and CONNECTRETRYDELAY values are operational parameters that can be set in
the STAF configuration file.
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
Raymond Kroeker <raykroe...@gmail.com>
06/11/2009 08:37 AM
Please respond to
raykroe...@gmail.com
To
Sharon Lucas/Austin/i...@ibmus
cc
staf-users@lists.sourceforge.net
Subject
Re: [staf-users] Fwd: Staf IO Exception
Is it possible to tune the sockets to be more flexible, ie set a
timeout on read operations?
Raymond
On Tue, Jun 9, 2009 at 14:07, Sharon Lucas<luc...@us.ibm.com> wrote:
>
> When you get an RC 22 using the tcp interface, this usually means that
there
> an error occurred transmitting data across the network (or STAFProc on
the
> remote machine shut down during the request). You might be experiencing
> some problems in your network.
>
> # staf local help error 22
> Response
> --------
> Description: Communication error
> Details : This indicates an error transmitting data across the
network,
> or to
> the local STAF process. For example, you would receive this error if
> STAFProc.
> exe was terminated in the middle of a service request, or if a bridge
went
> down
> in the middle of a remote service request. This can also indicate that
the
> requ
> ested endpoint is not valid (e.g. it has an invalid network interface
and
> port c
> ombination such as a non-secure tcp interface with the port for a secure
ssl
> int
> erface).
>
> STAF creates a server socket for an interface when STAFProc is started
and
> creates a client socket for each STAF service request that is submitted
> (which is connected until the request completes and the result is sent
> back). To get more information on low level socket stuff, you wouldn't
use
> STAF tracing. Instead you can use network debugging/monitor tools (e.g.
> network sniffer) that are available for your operating system. Google
for
> more information.
>
> --------------------------------------------------------------
> Sharon Lucas
> IBM Austin, luc...@us.ibm.com
> (512) 286-7313 or Tieline 363-7313
>
>
>
> Raymond Kroeker <raykroe...@gmail.com>
>
> 06/09/2009 09:14 AM
>
> Please respond to
> raykroe...@gmail.com
> To
> staf-users@lists.sourceforge.net
> cc
> Subject
> [staf-users] Fwd: Staf IO Exception
>
>
>
>
> ---------- Forwarded message ----------
> From: Raymond Kroeker <raykroe...@gmail.com>
> Date: Tue, Jun 9, 2009 at 07:14
> Subject: Re: [staf-users] Staf IO Exception
> To: Sharon Lucas <luc...@us.ibm.com>
>
>
> I removed the ssl interface and am hitting a similar issue:
>
> STAFConnectionReadUInt: Error reading from socket: recv() RC=104: 22
>
> I haven't looked into the native code; so a question I have is:
>
> What is the life-cycle of a socket? When is it created? How long
> does it stay connected? Does STAF include application layer protocols
> to keep it alive?
>
> Also I cannot find documentation on how to turn up the verbosity of
> the loging of the low level socket code. If this is possible it might
> help identify this issue.
>
> -----------------------------------------------------
> Raymond Kroeker
>
> On Mon, Jun 8, 2009 at 10:06, Raymond Kroeker<raykroe...@gmail.com>
wrote:
>> I am running STAF 3.3.2 on both systems; and have tcp/ssl configured
>> on both as well.
>>
>> I have attached the output of the version/interface commands as well
>> as the install properties for both systems. I would really appreciate
>> a build with the fix and will attempt the workaround as well to
>> identify whether this clears up the issue.
>>
>> I appreciate your help, thanks again Sharon.
>>
>> ---------------------------------------------------
>> Raymond Kroeker
>>
>> On Mon, Jun 8, 2009 at 09:17, Sharon Lucas<luc...@us.ibm.com> wrote:
>>>
>>> What version of STAF is on your Ubuntu 8.04 Server box and what
version
>>> of
>>> STAF is on your Windows 2003 Server box?
>>>
>>> STAF machine MISC VERSION
>>>
>>> Also, what interfaces (aka connection providers) do you have
configured
>>> on
>>> these two machines?
>>>
>>> STAF machine MISC LIST INTERFACES
>>>
>>> The problem is in the SSL connection provider (first added in STAF
>>> V3.3.0).
>>> We have fixed the following bug in the STAF SSL connection provider
in
>>> the
>>> next release of STAF (planned to be released at the end of June 2009)
>>> which
>>> may resolve the problem you are seeing. I could provide you with a
>>> private
>>> version of this new STAF version for you to try to see if it resolves
the
>>> problem you're seeing. If you're interested in trying this version,
also
>>> post the contents of the install.properties file in the directory
where
>>> you
>>> installed STAF (e.g. C:\STAF or /usr/local/staf) on these two
machines.
>>>
>>> - Fixed intermittent hangs that could occur submitting any STAF
service
>>> request by changing SSL_connect() to use a non-blocking socket to
prevent
>>> a
>>> SSL handshake from exceeding the connection timeout (Bug #2727266)
>>>
>>> A workaround for this problem is to comment out the ssl interface line
in
>>> the STAF.cfg files temporarily until this problem is resolved so that
>>> STAF
>>> would use the non-secure TCP/IP interface (e.g. tcp) instead of the
SSL
>>> TCP/IP interface (e.g. ssl) to communicate to remote machines. To
>>> comment
>>> out the ssl interface. insert a "#" at the beginning of the "interface
>>> ssl"
>>> line as follows:
>>>
>>> # Enable TCP/IP connections
>>> #interface ssl library STAFTCP option Secure=Yes option Port=6550
>>> interface tcp library STAFTCP option Secure=No option Port=6500
>>>
>>> Note that it would be best to see if this problem has already been
>>> resolved
>>> or not by trying out the private version of STAF. Let me know if
you're
>>> interested in trying it out. Thanks.
>>>
>>> --------------------------------------------------------------
>>> Sharon Lucas
>>> IBM Austin, luc...@us.ibm.com
>>> (512) 286-7313 or Tieline 363-7313
>>>
>>>
>>>
>>> Raymond Kroeker <raykroe...@gmail.com>
>>>
>>> 06/06/2009 10:48 AM
>>>
>>> Please respond to
>>> raykroe...@gmail.com
>>> To
>>> staf-users@lists.sourceforge.net
>>> cc
>>> Subject
>>> [staf-users] Staf IO Exception
>>>
>>>
>>>
>>>
>>> I'm currently having an intermittent but repeatable issue where I get
>>> an error when trying to read a remote staf variable on a Windows 2003
>>> Server box from an Ubuntu 8.04 Server box.
>>>
>>> Here is the trace from the WIndows box:
>>> 20090606-01:56:55;388;00002000;Caught STAFException in
>>> HandleRequest(): Connection terminated unexpectedly. , Exception:
>>> STAFConnectionIOException, Location:
>>>
>>>
c:\dev\autobuild\build\src\staf\stafif\STAFConnectionProviderInlImpl.cpp(251),
>>> Text: STAFConnectionRead: Error reading from socket: SSL_read()
>>> RC=10038 SSL error: error:00000000:lib(0):func(0):reason(0), Error
>>> code: 22
>>>
>>>
>>> Here is the stack from the Ubuntu box:
>>> STAFConnectionReadUInt: Error reading from socket: other side closed
>>> socket:
>>> 22
>>>
>>> Here is the request being issued:
>>> staf4 var resolve system string {STAF/Config/Sep/File}
>>>
>>> Can anyone shed any light as to why this may be happening?
>>>
>>> --
>>> ---------------------------------------------------------
>>> Raymond Kroeker
>>>
>>>
>>>
------------------------------------------------------------------------------
>>> OpenSolaris 2009.06 is a cutting edge operating system for enterprises
>>> looking to deploy the next generation of Solaris that includes the
latest
>>> innovations from Sun and the OpenSource community. Download a copy and
>>> enjoy capabilities such as Networking, Storage and Virtualization.
>>> Go to: http://p.sf.net/sfu/opensolaris-get
>>> _______________________________________________
>>> staf-users mailing list
>>> staf-users@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/staf-users
>>>
>>>
>>
>>
>>
>> --
>> ---------------------------------------------------------
>> Raymond Kroeker
>>
>
>
>
> --
> ---------------------------------------------------------
> Raymond Kroeker
>
>
>
> --
> ---------------------------------------------------------
> Raymond Kroeker
>
>
------------------------------------------------------------------------------
> Crystal Reports - New Free Runtime and 30 Day Trial
> Check out the new simplified licensing option that enables unlimited
> royalty-free distribution of the report engine for externally facing
> server and web deployment.
> http://p.sf.net/sfu/businessobjects
> _______________________________________________
> staf-users mailing list
> staf-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/staf-users
>
>
--
---------------------------------------------------------
Raymond Kroeker
------------------------------------------------------------------------------
Crystal Reports - New Free Runtime and 30 Day Trial
Check out the new simplified licensing option that enables unlimited
royalty-free distribution of the report engine for externally facing
server and web deployment.
http://p.sf.net/sfu/businessobjects
_______________________________________________
staf-users mailing list
staf-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/staf-users
------------------------------------------------------------------------------
Crystal Reports - New Free Runtime and 30 Day Trial
Check out the new simplified licensing option that enables unlimited
royalty-free distribution of the report engine for externally facing
server and web deployment.
http://p.sf.net/sfu/businessobjects
_______________________________________________
staf-users mailing list
staf-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/staf-users
