Distributed Systems Help needed

Hey,
My group at uni is currently trying to make a program that runs via a multi-threaded client/server, however its not going too well.
It needs to authorize the users as they log on and store their details, as well as having a chat lobby and running a game (storing its highscores etc).
anyone got any advice? got any example code? ;-)
currently we are looking at putting the server and the chat lobby together, while making the client and game do the rest of the work (the game is going to be P2P)
i have included the spec for the project as a guide to the kind of help we need:
- Authorize and Register (if not alredy authorized)
- Store current information on clients (name, IP etc)
- provide a method of transferring player details between server/client
- Store scores from game on server (i.e. high score table)
- connection stats (i.e. no of connections, player stats (i.e. wins/losses/games played))
- the client needs to mirror these actions as well as allow the play between two other players
we hope this helps in choosing the advice to give and we thank you in advance for everyones help.

Sounds like a reasonable distributed app. My advice on how to proceed
would be to
1. define the data structures you will be using, along with the verb
forms and actions you will need.
2. define the modules in the system.
3. define a configuration showing where these modules will be running.
5. figure out what messaging is the best match for distributed comms
given what is getting sent where and what the constraints are
4. any place you go across VMs, define authorization for what messages
are allowed and what data within those messages needs to be filtered
6. test each module with canned input, deploy, test the UI etc.
We use a framework generator (http://sourceforge.net/projects/sandboss) to
avoid building in dependencies on the messaging technology, and to handle
most of the grunt coding work. It's open source, and there's an example
app that shows authorization in action. You can find more details on how
we build apps at http://sandservices.com
Hope that helps.
cheers,
-ep

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I need help about distributed systems

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oh .

Messaging:System Error(-10)HELP NEEDED!NEED BEFORE...

Messaging: System Error(-10) [Nokia N70] URGENT HELP NEEDED! - NEEDE BEFORE WED 21ST MAY '08 - BUT HELP OTHERWISE APPRECIATED!______________________________
Hey,
I need this help before Wednesday 21st May 2008 as I am going abroad and urgently need my phone. I have had my phone for just over a year now and I have never had any problems with it up until now.... Think you can help...?
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U said in another post u've tried all my solutions = =?
On that post its for Nokia N95 u kno? Although the problem is similar, but different phone model can lead to quite different solutions.
Are u sure u tried all my solutions?
have u tried this?:
/discussions/board/message?board.id=messaging&message.id=7926#M7926
Also format ur memory card, do not use content copier! dont install too much softwares, as ur phone model is old and doesnt have much space.
This is from NOkia, sometimes does work depending on ur situation:
Memory low
Q: What can I do if my device memory is low?
A: You can delete the following items regularly to avoid
memory getting low:
• Messages from Inbox, Drafts, and Sent folders in Messaging
• Retrieved e-mail messages from the device memory
• Saved browser pages
• Images and photos in Gallery
To delete contact information, calendar notes, call timers, call cost timers, game scores, or any other data, go to the respective application to remove the data. If you are deleting multiple items and any of the following notes are shown: Not enough memory to perform operation. Delete some data first. or Memory low. Delete some data., try deleting items one by one (starting from the smallest item).
use device status http://handheld.softpedia.com/get/Desktop-and-Shell/Windows/Nokia-Device-Status-57673.shtml
to maybe let me see what u got on ur phone (by saving/exporting report).
Make sure u have the latest firmware! Updating firmware is like a hard reset but also upgrade.
Message Edited by goldnebula on 20-May-2008 02:05 PM

I purchased Creative Cloud through the Employee Purchase program. Had to reimage system. Need help reinstalling application. I have "redemption" code, but get error saying it has already been redeemed. Please advise.

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Hi Starla Mehaffey,
I would suggest you to sign in with your Adobe ID during installation and your product will automatically recognize your membership details.
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HI,
We install SAP R3 enterprise 4.7 SR1 as distribute system on 3 different windows 2003 server, Central Instance , Database Instance and Dialog Instance. As I understood, we need to use sm59 to setup the RFC destination so that DB13 can work well.
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Regards

there is not any relation of saposcol program to database backup. as per my understanding, this program is used to collect the data, for database backup from DB13 program sapxpg should be called, so check the SM59 that the connection of this program is working properly or not.
Sap Note : 446172
Regards
Subhash
Edited by: Subhash Chandra on Dec 11, 2008 2:56 PM

How to run DB13 in a Distributed System with Linux+Oracle

Hello all,
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============================================
No application server found on database host - rsh/gateway will be used
Execute logical command BRBACKUP On host sapsrvcepdblan
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Fresh

Hi Fresh,
In a distributed environment you need to install SAP gateway instance on the DB host.
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Post this db13 should work fine.
Hope this helps.
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Deepak Kori

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Hi All,
I am currently trying to install Central Instance for ABAP Distributed system on AIX.
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WARNING 2006-09-20 14:22:39
Could not determine a valid JAVA_HOME directory from the environment.
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Creating file /tmp/sapinst_instdir/ERP/SYSTEM/ORA/DISTRIBUTED/AS-ABAP/CI/FormalPasswordCheck.log.
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Hi Chie,
definately wrong
the output should be similar to this one:
java version "1.4.2"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2)
Classic VM (build 1.4.2, J2RE 1.4.2 IBM AIX 5L for PowerPC (64 bit JVM) build caix64142sr1aifx-20051020 (SAP 142SR1a + 88494 + 84428 + 83602 + 89528 + 90372 + 88233 + 66827 + 92741 + 95636 + 96556 + 96581) (JIT enabled: jitc))
note the "64 bit" and "SAP" in there...
You can download it here:
https://www14.software.ibm.com/webapp/iwm/web/preLogin.do?source=javasap
Regards,
Pascal
PS: please give points for helpful answers

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Help needed to Adobe extension manager cs6 to show all my cs6 products
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My Photosop version cs6
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<?xml version="1.0" encoding="UTF-8"?>
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<?xml version="1.0" encoding="UTF-8"?>
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        <Data key="$panels">$pluginsfolder/Panels</Data>
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        <Data key="$photoshop">$UserDataFolder/Adobe/Adobe Photoshop CS6/Configuration</Data>
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        <Data key="ProductName">Photoshop32</Data>
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        <Data key="ProductVersion">13.0</Data>
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        <Data key="HostNameForCSXS">PHSP</Data>
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Waiting for your reply ...thanks
Here is the results
I installed photoshopcs6 illustrator cs6 dreamweaver cs6 illustrator cs6 in the system , But nothing seems
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Info:
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Status = PUMPING
Path
Version = 2.0
Build = ES 4.2.12
Next serial number = 40
Logging: = OFF
Now = 15:55:49
Messages:
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Authentication = ON
Digest = ON
Thread: estoolkit-3.8#thread
Avg. pump interval = 55ms
Last pump = 62ms ago
Ping: 7
ECHO_REQUEST: ECHO_RESPONSE
Timeout = undefined
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Timeout = undefined
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MAIN: MAIN
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LAUNCHED: LAUNCHED
Timeout = undefined
Handler = installed
DIAGNOSTICS: DIAGNOSTICS
Timeout = undefined
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Timeout = undefined
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SETUPTIME: thread=0ms, left=16ms
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estoolkit-3.8#dbg:
msg[15:55:49]: 00000035
@BT>Version = 2.05
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Sender = estoolkit-3.8#dbg
Sender-ID = localhost:win3788
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Type = Ignore
Response-Request = Timeout
Headers = (no headers)
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Serial-Number = 35
Received = undefined
Result = undefined
Error = undefined
Body = (empty)
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Outgoing: 0
Handler: 9
ExtendScript = for all messages
Error = for only msg #25
Error = for only msg #27
Error = for only msg #31
Result = for only msg #35
Error = for only msg #35
Timeout = for only msg #35
Result = for only msg #37
Error = for only msg #37
estoolkit-3.8#estk:
msg[15:55:49]: 00000037
@BT>Version = 2.05
Target = estoolkit-3.8#estk
Sender = estoolkit-3.8#dbg
Sender-ID = localhost:win3788
Timeout = 16:05:49
Type = Debug
Response-Request = Result Error
Headers = (no headers)
Timestamp = 15:55:49
Serial-Number = 37
Received = undefined
Result = undefined
Error = undefined
Body: 107 bytes
Text = <get-properties engine="main" object="$.global" exclude="undefined,builtin,prototype" all="true" max="20"/>
Incoming: 1
Outgoing: 0
Handler: 1
ExtendScript = for all messages
estoolkit-3.8: (main)
Incoming: 0
Outgoing: 0
Handler: 1
ExtendScript = for all messages
Targets: 1
Connector = PCD
Installed: 0
Running: 0
exman-6.0:
Path = C:\Program Files\Adobe\Adobe Extension Manager CS6\Adobe Extension Manager CS6.exe
Display Name = Adobe Extension Manager CS6
MsgAuthentication = ON
MsgDigest = ON
ESTK = OFF
BundleID = com.adobe.exman
Status = (not running)
ExeName = Adobe Extension Manager CS6.exe
Installed: 1
Running: 0
Groups = (no groups defined)

HELP NEEDED!! (please) CS6

HELP NEEDED! I have been working for 3 days in a "new doc". Of course i have saved several times (control+s)
but i do not remember it asking me about file name or folder. Today my comp crashed and i do not find the file. Just found 2 files (a tmp and one with no extension)
: one with 174 mg and another one with almost 2 gb. Is there any possibility to recover my work? Photoshop did not oppened a thing when i restarted comp
Thanks in advance

The TMP file is your Scratch Disk file, and cannot be "recovered" to an Image file.
Your second file might be almost anything. Though designed more for video files, both G-Spot and MediaInfo (both free file info utilities), CAN read several Still Image file types, and might help point out what that file (the one with no extension) really is. OTOH, as it could be almost anything, it could be that there is no header info in the file, for either to read.
Good luck,
Hunt
PS - Before I did much additional work, I would investigate WHY your computer shut down. If you are on a PC, I would go into Event Viewer, at the time of the shutdown, and see if you can track down any warning, or error messages, in both the System and Applications Tabs. I am pretty sure that a Mac has similar, but have not a clue where, or even what it would be called.

Help needed in PS module on CJ9ECP/CJ20N for revaluating CCR??

help needed in PS module on CJ9ECP/CJ20N for revaluating CCR??
How to handle method on_costing_component_to_outtab which belongs to badi gui_itemization_ck. This is to revaluate CCR in CJ20N.
From sale transaction(va01/va02) i need to call cj20n/cj9ecp for revaluating cost estimates. Can anyone say how to proceed with this thing.
Can any one say how to handle pop up window in CJ20N/CJ9ECP when clicked edit ecp button. Later how to revaluate cost estimates. For this should i need to go for call transaction or is there any method available. If so how to handle method for revaluating cost estimates for ECP of WBS elements

Thanks Amol for the advice.
My friend doesn't belong to an engineering background and had not worked in a manufacturing environment.
He holds an MBA degree specialised in systems and has worked in software companies supporting software projects and the functions(like HR,Procurement in the same setup) as a software quality guy.
Moreover the modules mentioned by you requires engineering background with manufacturing exposure.
He had enquired for the course at siemens and they said that he may not be suitable for any of the modules offered by them as per the above reasons.They also mentioned that they have to check with SAP Labs for expert opinion.
Please provide your inputs.
regards,
Zubair.

URGENT HELP NEEDED ... Tomcat Realm and JRE1.4 plug-in problem

I have tried the Security Realm of Tomcat. Since I do not have
an LDAP server, I decided to use the Tomcat-users.xml file in
Tomcat\conf directory.
I added the following lines of code in the web.xml file.
<security-constraint>
<web-resource-collection>
<web-resource-name>Entire Application</web-resource-name>
<url-pattern>/*</url-pattern>
</web-resource-collection>
<auth-constraint>

<role-name>webviewer</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>BASIC</auth-method>
<realm-name>Tomcat Manager Application</realm-name>
</login-config>
The <role-name> "webviewer" is added into "Tomcat-Users.xml" as the following:
<tomcat-users>
<user name="test" password="password" roles="webviewer" />
</tomcat-users>
So, now when we type the url: http://localhost:8080/adbpdbre/default.htm, TOMCAT shows a dialog box asking for UserName: and Password:Now, only when we give the username and password, it shows the page. This is exactly what we want.
But the problem now is, this default.htm page, has 5 links to 5 applets. The first time that I click on one of these links, the JRE plug of 1.4 shows a dialog again asking for the username and password. Till I dont provide the username and password the system doesnt go ahead and applet doesnt load. I do not want the JRE to ask me for the username/passwords again..How to avoid this ?
Can you give me some more information on this. Ultimately in the production usage, we will be using LDAP and not Tomcat's memory realm.
URGENT HELP NEEDED ... I need to get back to my client on this.
Help would be v. much appreciated.

In the config file, you 're essentially saying that you want Tomcat to prompt for usr/passw on every request (url-pattern = /*) made by a 'webviewer', and that's exactly what Tomcat is doing.
Consider using specific url-patterns & roles for resources to be protected. If for now, all you need is to protect the first page, use a more specific url-pattern.
Just an advice : if you'll be using LDAP in production, do not waste time with Tomcat's Security Realm and the BASIC authentication type, since the two have not much in common. Start reading doc on LDAP, and code a prototype, or even better, a vertical slice of the app (i.e a proof of concept).

Urgent help needed, can I restore N900 Backup file...

i owned a N900 (now sold out)
before selling i took backup of contacts from backup restore option in application section
now i bought a N8 but i m not able to restore my contacts
1. is there any way to restore them in N8?
2. if not, can i convert them in TEXT or any readable format
urgent help needed
thanks in advance

The backup procedures built into the phone are only designed for restoring to the same phone (ie: in case or data corruption, software update or repair etc.), they can't usually be used to restore to a phone with a different operating system.
You should have backed up with Ovi Suite before selling the N900, that would have been able to restore to the N8.

IPhone 3G 8GB Crashes when syncing with iTunes. URGENT HELP NEEDED.

I have latest iTunes and OS on my iPhone 3G...
Every time i plug my iPhone in it begins to sync and then iTunes will freeze and not respond..
I have tried re installing iTunes.. I can't reset my iPhone as i can't create a backup..
URGENT HELP NEEDED PLEASE!

I don't have an iphone, but if it's anything like my click-wheel ipod, a reset doesn't delete anything.
It just resets the ipod's operating system, kind of like a PC restart. Did you try this Sleep/Wake button thing mentioned here?
http://support.apple.com/kb/HT1737
Maybe it's a podcast of voice memo causing the problem like it did for this person
http://discussions.apple.com/message.jspa?messageID=10907809#10907809
That's all I got. You might have better luck on an iPhone forum. Everyone there would probably have one. Like I said, I don't.

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