Hi Peter, Andy,
a Mobile version of the Java xrootd client is available at
http://www.slac.stanford.edu/~dorigoa/NetFileStream.jar
(it is not an 'obfuscated' package so you can reverse-engineer it)
Note 1: A Java Mobile Virtual Machine compliant with MIDP 2.0/CLDC 1.1
is required in the mobile device in order to correctly run the client;
AFAIK the following models support it for sure: Sony-Ericsson Z1010,
Motorola A1000/E1000, *NEC e228/338/e616V.
Note 2: Some device like PalmOS, WinCE compatible palm and so on, have a
custom JVM unable to run MIDP applications. The free WABA JVM is unable
to run NetFileStream.jar because has a completely proprietary library
for socket and record database.
*
Note 3: The client now is only a demo: just insert the URL on the remote
file (must be an ASCII and short file because its content, and its size,
will be displayed on the mobile device screen) and press 'OK'. No
log/error messages are displayed at the moment so you must take a look
at the server log if something goes wrong.
Note 4: Every Mobile device model hai its proprietary way to deploy/run
the jar application into the device RAM, so I won't describe any method
here. Some model has a software facility to do that very easily (only
under Windows); in other models (like the old Motorola A835) the Java
loader menu is HIDDEN (!), for marketing reasons (I unlocked it some
time ago), I think... Google can help has usual for any problem.
Alvise
Peter Elmer wrote:
> Hi Alvise,
>
>On Wed, Nov 24, 2004 at 12:26:47PM +0100, Alvise Dorigo wrote:
>
>
>>Peter Elmer wrote:
>>
>>
>>>On Wed, Nov 24, 2004 at 12:16:28PM +0100, Alvise Dorigo wrote:
>>>
>>>
>>>
>>>
>>>>ok, Pete. Honestly Windows is a world to test yet...
>>>>
>>>>
>>>>
>>>No problem. At least there is something to play with. (I added Tony as
>>>I know he was looking at xrootd access for JAS.)
>>>
>>>
>>>
>>>
>>What's JAS ? Is Tony interested in the java client ? this is encouraging...
>>
>>
>
> For JAS see:
>
> http://jas.freehep.org/
>
> Regarding ROOT I/O and JAS, see his talk at CHEP:
>
>http://indico.cern.ch/contributionDisplay.py?contribId=400&sessionId=6&confId=0
>
>IIRC, he had started to work on a Java client, but was aware (since I
>mentioned it at CHEP) that you were working on this...
>
> Pete
>
>
>
>>>>is >~140 kB a large attach ? ok I wont do this kind attachment in future.
>>>>
>>>>
>>>>
>>>>
>>>Large is all relative, but in this case the limit was set low enough to
>>>discourage non-trivial attachments altogether. You know how much I like
>>>them.... ;-)
>>>
>>> Pete
>>>
>>>
>>>
>>>
>>>
>>>
>>>>Peter Elmer wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>Hi Alvise,
>>>>>
>>>>>On Wed, Nov 24, 2004 at 11:14:07AM +0100, Alvise Dorigo wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>I recently fixed a number of bugs. Please use the new jar in attach
>>>>>>instead of that one I sent to you some day ago. Now in the source and
>>>>>>destination argument of XrdFileCopy you can omit the TCP_PORT number
>>>>>>(it will try to get it from /etc/services under linux and from
>>>>>>c:\\winnt\\system32\\drivers\\etc\\services under WinNT/XP, otherwise
>>>>>>default=1094); in addition a 3rd parameter cab be passed to specify the
>>>>>>size of copy chunk (larger chunk means more copy speed, default chunk
>>>>>>size is 256 kB) so:
>>>>>>
>>>>>>java- jar XrdCopyFile.jar xroot://<USER>@<HOST>/SRC_PATHFILE
>>>>>>xroot://<USER>@<HOST>/TARGET_PATHFILE [CHUNK_SIZE_IN_KB]
>>>>>>
>>>>>>Note 1: The ASYNC communication has been deeply tested with 10
>>>>>>concurrent clients repeatedly reading from the same file and from the
>>>>>>same server (this to put all clients on the same physical channel). No
>>>>>>server-crash during reading has been triggered yet, but it will be done
>>>>>>asap. The server-crash tolerance has been fully tested with 1 and more
>>>>>>client in SYNC mode.
>>>>>>
>>>>>>Note 2: Some data corruption takes place when "oksofar" is handled,
>>>>>>that means that copying files using chunks > 2MB can create data
>>>>>>corruption. I'll investigate.
>>>>>>
>>>>>>Note 3: The Java client is supposed to run under WindowNT/XP too
>>>>>>(please remember JDK1.5) but very few tests has been done: even if Java
>>>>>>is fully multiplatform everybody knows that small differences are
>>>>>>between platforms, versions and vedors... I developed and tested under
>>>>>>Fedora Core 3 Linux (kernel 2.6.9-1.667) Sun JDK 1.5.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>Ok, thanks: I've updated the jar file linked from the xrootd page. Very
>>>>>nice that we have a windows client now, too....
>>>>>
>>>>>BTW, you can't send mails with large attachments to the mailing list. It
>>>>>will bounce them. (And in general sending large attachments to mailing
>>>>>list
>>>>>is bad practice.) You can probably just stick any future update files
>>>>>someplace at SLAC and send me the location so I can put it in the xrootd
>>>>>web area...
>>>>>
>>>>> Pete
>>>>>
>>>>>
>>>>>
>
>
>
>-------------------------------------------------------------------------
>Peter Elmer E-mail: [log in to unmask] Phone: +41 (22) 767-4644
>Address: CERN Division PPE, Bat. 32 2C-14, CH-1211 Geneva 23, Switzerland
>-------------------------------------------------------------------------
>
>
