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• How to create a Turing machine that takes a single digit decimal number from 0 - 9 and output the cu

  - by Julian

  I'm working on a project for a Turning machine but having problems conceptualizing the steps. f(x) = x^3, where x is a single digit between 0 - 9 inclusive. Based on my understanding I am to convert the number to binary but how do I find the cube of a number in binary. Also, how do I write the cube on the tape. So far I'm thinking I should create a state diagram that accepts the binary versions of 0-9 but what next?

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• BES Express - configure MDS to push messages from 3rd party web application

  - by Max Gontar

  Hi! I have developed IIS web service to send PAP messages using Blackberry Push API over MDS. And there is an application installed on device, configured to receive push messages on appropriate port. Everything works well on MDS simulator. But it's not working well in real environment: I have installed BES Express and register several devices. I can browse MDS url with appropriate port, so url is correct. Also port enabled for reliable pushes is used in push message and in device application. Here is MDS simulator log: <2011-01-12 14:00:03.456 EET>:[272]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = PapServlet: request from 0:0:0:0:0:0:0:1 564 bytes...> <2011-01-12 14:00:03.476 EET>:[273]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Mapping PAP request to push request for pushID:pushID:asdas> <2011-01-12 14:00:03.479 EET>:[274]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = PushServlet: POST request from [UNKNOWN @ 0:0:0:0:0:0:0:1] to [PAPDEST=WAPPUSH%3D2100000A%253A100%2FTYPE%3DUSER%40rim.net&PORT=100&REQUESTURI=/] : -1 bytes...> <2011-01-12 14:00:03.480 EET>:[275]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = submitting push message with id:pushID:asdas> <2011-01-12 14:00:03.482 EET>:[276]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Executing push submit command for pushID:pushID:asdas> <2011-01-12 14:00:03.483 EET>:[278]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Pushing message to: 2100000a> <2011-01-12 14:00:03.484 EET>:[279]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Number of active push connections:1> <2011-01-12 14:00:03.489 EET>:[280]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = added server-initiated connection = -872546301, push id = pushID:asdas> <2011-01-12 14:00:03.491 EET>:[281]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Available threads in DefaultJobPool = 9 running JobRunner: DefaultJobRunner-7> <2011-01-12 14:00:03.494 EET>:[282]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = ReceivedFromServer, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION => <2011-01-12 14:00:03.494 EET>:[282]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = ReceivedFromServer, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = [Transmission Line Section]:> <2011-01-12 14:00:03.494 EET>:[282]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = ReceivedFromServer, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = POST / HTTP/1.1> <2011-01-12 14:00:03.494 EET>:[282]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = ReceivedFromServer, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = [Headers Section]: 8 headers> <2011-01-12 14:00:03.494 EET>:[282]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = ReceivedFromServer, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = [Parameters Section]: 3 parameters> <2011-01-12 14:00:03.499 EET>:[283]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = SentToDevice, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION => <2011-01-12 14:00:03.499 EET>:[283]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = SentToDevice, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = [Transmission Line Section]:> <2011-01-12 14:00:03.499 EET>:[283]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = SentToDevice, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = POST / HTTP/1.1> <2011-01-12 14:00:03.499 EET>:[283]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = SentToDevice, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = [Headers Section]: 9 headers> <2011-01-12 14:00:03.499 EET>:[283]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, HANDLER = HTTP, EVENT = SentToDevice, DEVICEPIN = 2100000a, CONNECTIONID = -872546301, HTTPTRANSMISSION = [Parameters Section]: 3 parameters> <2011-01-12 14:00:03.501 EET>:[284]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Finished JobRunner: DefaultJobRunner-7, available threads in DefaultJobPool = 10, time spent = 8ms> <2011-01-12 14:00:03.521 EET>:[287]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, EVENT = CreatedSendingQueue, DEVICEPIN = 2100000a> <2011-01-12 14:00:03.526 EET>:[290]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, EVENT = Sending, TAG = 1288699908, DEVICEPIN = 2100000a, VERSION = 16, CONNECTIONID = -872546301, SEQUENCE = 0, TYPE = NOTIFY-REQUEST, CONNECTIONHANDLER = http, PROTOCOL = TCP, PARAMETERS = [MGONTAR/10.10.0.35:100], SIZE = 339> <2011-01-12 14:00:03.531 EET>:[291]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Number of active push connections:0> <2011-01-12 14:00:03.591 EET>:[292]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, EVENT = Notification, TAG = 1288699908, STATE = DELIVERED> <2011-01-12 14:00:03.600 EET>:[296]:<MDS-CS_MDS>:<DEBUG>:<LAYER = SCM, EVENT = Device connections: AVG latency (msecs)79> <2011-01-12 14:00:03.600 EET>:[297]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, Removed push connection:-872546301> <2011-01-12 14:00:07.015 EET>:[298]:<MDS-CS_MDS>:<DEBUG>:<LAYER = IPPP, EVENT = RemovedSendingQueue, DEVICEPIN = 2100000a> And here is real MDS log: <2011-01-12 11:35:02.763 GMT>:[3932]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, PapServlet: request from 192.168.1.241 583 bytes...> <2011-01-12 11:35:02.897 GMT>:[3933]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, Mapping PAP request to push request for pushID:pushID:sdfsdfwerwer> <2011-01-12 11:35:02.909 GMT>:[3934]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, PushServlet: POST request from [UNKNOWN @ 192.168.1.241] to [PAPDEST=WAPPUSH%3D22D7F6BD%253A7874%2FTYPE%3DUSER%40rim.net&PORT=7874&REQUESTURI=/]> <2011-01-12 11:35:02.909 GMT>:[3934]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<push id: pushID:sdfsdfwerwer> <2011-01-12 11:35:02.910 GMT>:[3935]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, submitting push message with id:pushID:sdfsdfwerwer> <2011-01-12 11:35:02.910 GMT>:[3936]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, Executing push submit command for pushID:pushID:sdfsdfwerwer> <2011-01-12 11:35:02.911 GMT>:[3937]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, Pushing message to: 22d7f6bd> <2011-01-12 11:35:02.912 GMT>:[3938]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, Number of active push connections:1> <2011-01-12 11:35:02.931 GMT>:[3939]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, added server-initiated connection = -1848311806, push id = pushID:sdfsdfwerwer> <2011-01-12 11:35:03.240 GMT>:[3940]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = IPPP, EVENT = CreatedSendingQueue, DEVICEPIN = 22d7f6bd, USERID = u3> <2011-01-12 11:35:03.241 GMT>:[3941]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = IPPP, EVENT = Sending, TAG = 536543251, DEVICEPIN = 22d7f6bd, USERID = u3, VERSION = 16, CONNECTIONID = -1848311806, SEQUENCE = 0, TYPE = NOTIFY-REQUEST, CONNECTIONHANDLER = http, PROTOCOL = TCP, PARAMETERS = [LDN-Server1/192.168.1.240:7874], SIZE = 383> <2011-01-12 11:35:03.241 GMT>:[3942]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, Number of active push connections:0> <2011-01-12 11:35:03.253 GMT>:[3943]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SRP, SRPID = S27700165[LDN-SERVER1:3200], EVENT = Sending, VERSION = 1, COMMAND = SEND, TAG = 536543251, SIZE = 570> <2011-01-12 11:35:03.838 GMT>:[3944]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SRP, SRPID = S27700165[LDN-SERVER1:3200], EVENT = Receiving, VERSION = 1, COMMAND = STATUS, TAG = 536543251, SIZE = 10, STATE = DELIVERED> <2011-01-12 11:35:04.104 GMT>:[3945]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = IPPP, EVENT = Notification, TAG = 536543251, STATE = DELIVERED> <2011-01-12 11:35:04.121 GMT>:[3946]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, Device connections: AVG latency (msecs)893> <2011-01-12 11:35:04.135 GMT>:[3947]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<INFO >:<LAYER = IPPP, DEVICEPIN = 22d7f6bd, DOMAINNAME = LDN-Server1/192.168.1.240, CONNECTION_TYPE = PUSH_CONN, ConnectionId = -1848311806, DURATION(ms) = 1151, MFH_KBytes = 0, MTH_KBytes = 0.374, MFH_PACKET_COUNT = 0, MTH_PACKET_COUNT = 1> <2011-01-12 11:35:04.144 GMT>:[3948]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = IPPP, Removed push connection:-1848311806> <2011-01-12 11:35:09.264 GMT>:[3949]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = IPPP, EVENT = RemovedSendingQueue, DEVICEPIN = 22d7f6bd, USERID = u3> <2011-01-12 11:35:58.187 GMT>:[3950]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SRP, SRPID = S27700165[LDN-SERVER1:3200], EVENT = Sending, VERSION = 1, COMMAND = INFO, SIZE = 46> <2011-01-12 11:35:58.187 GMT>:[3951]:<MDS-CS_LDN-SERVER1_MDS-CS_1>:<DEBUG>:<LAYER = SCM, Sent health to S27700165[LDN-SERVER1:3200] Health=[0x 0000 0007 0000 0000],Mask=[0x 0000 0007 0000 0000],Load=[60]> As you can see, logs not really differs, message is marked as delivered. But my app on device not really gets this message (as it works in mds simulator) Please advice me, what may be wrong? Is there some certificate to install or security settings I should configure to make this push message came to device application? Thank you! same question on bbforums

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• SqlBulkCopy is slow, doesn't utilize full network speed

  - by Alex

  Hi, for that past couple of weeks I have been creating generic script that is able to copy databases. The goal is to be able to specify any database on some server and copy it to some other location, and it should only copy the specified content. The exact content to be copied over is specified in a configuration file. This script is going to be used on some 10 different databases and run weekly. And in the end we are copying only about 3%-20% of databases which are as large as 500GB. I have been using the SMO assemblies to achieve this. This is my first time working with SMO and it took a while to create generic way to copy the schema objects, filegroups ...etc. (Actually helped find some bad stored procs). Overall I have a working script which is lacking on performance (and at times times out) and was hoping you guys would be able to help. When executing the WriteToServer command to copy large amount of data ( 6GB) it reaches my timeout period of 1hr. Here is the core code for copying table data. The script is written in PowerShell. $query = ("SELECT * FROM $selectedTable " + $global:selectiveTables.Get_Item($selectedTable)).Trim() Write-LogOutput "Copying $selectedTable : '$query'" $cmd = New-Object Data.SqlClient.SqlCommand -argumentList $query, $source $cmd.CommandTimeout = 120; $bulkData = ([Data.SqlClient.SqlBulkCopy]$destination) $bulkData.DestinationTableName = $selectedTable; $bulkData.BulkCopyTimeout = $global:tableCopyDataTimeout # = 3600 $reader = $cmd.ExecuteReader(); $bulkData.WriteToServer($reader); # Takes forever here on large tables The source and target databases are located on different servers so I kept track of the network speed as well. The network utilization never went over 1% which was quite surprising to me. But when I just transfer some large files between the servers, the network utilization spikes up to 10%. I have tried setting the $bulkData.BatchSize to 5000 but nothing really changed. Increasing the BulkCopyTimeout to an even greater amount would only solve the timeout. I really would like to know why the network is not being used fully. Anyone else had this problem? Any suggestions on networking or bulk copy will be appreciated. And please let me know if you need more information. Thanks. UPDATE I have tweaked several options that increase the performance of SqlBulkCopy, such as setting the transaction logging to simple and providing a table lock to SqlBulkCopy instead of the default row lock. Also some tables are better optimized for certain batch sizes. Overall, the duration of the copy was decreased by some 15%. And what we will do is execute the copy of each database simultaneously on different servers. But I am still having a timeout issue when copying one of the databases. When copying one of the larger databases, there is a table for which I consistently get the following exception: System.Data.SqlClient.SqlException: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. It is thrown about 16 after it starts copying the table which is no where near my BulkCopyTimeout. Even though I get the exception that table is fully copied in the end. Also, if I truncate that table and restart my process for that table only, the tables is copied over without any issues. But going through the process of copying that entire database fails always for that one table. I have tried executing the entire process and reseting the connection before copying that faulty table, but it still errored out. My SqlBulkCopy and Reader are closed after each table. Any suggestions as to what else could be causing the script to fail at the point each time?

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• linking the EF 4.0 context to the WCF call context

  - by pablocastilla

  Hello, I would like to create an Entity Framework 4.0 context when a call is received and invoke to save changes when it finish, (something like JPA). I think it is a good idea because I can use the state for all the call, It is short and encapsulate enogh to be threadsafe and long enough for caching calls and the context itself. Any idea how is the best way for implement this?

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• Wildcards not being substituted

  - by user21463

  #!/bin/bash loc=`echo ~/.gvfs/*/DCIM/100_FUJI` rm -f /mnt/fujifilmA100 ln -s "$loc" /mnt/fujifilmA100 For some reason the variable * doesn't get substituted with the only possible value and gets given the value /home/chris/.gvfs/*/DCIM/100_FUJI. Does anyone have an idea of why? Please note: If global expansion fails, the pattern is not substituted. I ran the commands: chris@comp2008:~$ loc=`echo ~/.gvfs/*/DCIM/100_FUJI ` chris@comp2008:~$ echo $loc /home/chris/.gvfs/gphoto2 mount on usb%3A001,008/DCIM/100_FUJI So we can see the expansion should work I have now switched to using: loc = `find ~/.gvfs -name 100_FUJI ` I am just curious why it doesn't work as is. Debugging output using sh -x echo /home/chris/.gvfs/*/DCIM/100_FUJI loc=/home/chris/.gvfs/*/DCIM/100_FUJI rm -f /mnt/fujifilmA100 ln -s /home/chris/.gvfs/*/DCIM/100_FUJI/mnt/fujifilmA100

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• Retrieving virtual disk file name from disk number

  - by Josip Medved

  When I list virtual disks within diskpart: DISKPART> list vdisk VDisk ### Disk ### State Type File --------- -------- -------------------- --------- ---- VDisk 0 Disk 2 Attached not open Fixed C:\Disk.vhd Interesting part for me here is file name. I tried to find equivalent of function that would give me file name (under File column) if I know disk number. Any idea which function that might be?

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• authlogic - do I still need Rails sessions?

  - by tg

  Hi, I'm a newbie to Rails and am starting a new project that uses AuthLogic. I'm just a little confused about whether AuthLogic provides everything I need to store session state, or whether I still have to include the Rails mechanism (rake db:sessions:create). Thanks! T

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• From varchar(36) to UNIQUEIDENTIFIER

  - by jgonchik

  I am trying to cast an AuctionId that is a UNIQUEIDENTIFIER to an varchar(36) and then back to an UNIQUEIDENTIFIER. Please help me. CAST((SUBSTRING(CAST([AuctionId] as VARCHAR(36)), 0, 35) + '1') AS UNIQUEIDENTIFIER) But I keep getting this error: Msg 8169, Level 16, State 2, Line 647 Conversion failed when converting from a character string to uniqueidentifier. Thanks in advance

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• When will the ValueConverter's Convert method be called in wpf

  - by sudarsanyes

  I have an ObservableCollection bound to a list box and a boolean property bound to a button. I then defined two converters, one that operates on the collection and the other operates on the boolean property. Whenever I modify the boolean property, the converter's Convert method is called, where as the same is not called if I modify the observable collection. What am I missing?? Snippets for your reference, xaml snipet, <Window.Resources> <local:WrapPanelWidthConverter x:Key="WrapPanelWidthConverter" /> <local:StateToColorConverter x:Key="StateToColorConverter" /> </Window.Resources> <StackPanel> <ListBox x:Name="NamesListBox" ItemsSource="{Binding Path=Names}"> <ListBox.ItemsPanel> <ItemsPanelTemplate> <WrapPanel x:Name="ItemWrapPanel" Width="500" Background="Gray"> <WrapPanel.RenderTransform> <TranslateTransform x:Name="WrapPanelTranslatation" X="0" /> </WrapPanel.RenderTransform> <WrapPanel.Triggers> <EventTrigger RoutedEvent="WrapPanel.Loaded"> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetName="WrapPanelTranslatation" Storyboard.TargetProperty="X" To="{Binding Path=Names,Converter={StaticResource WrapPanelWidthConverter}}" From="525" Duration="0:0:2" RepeatBehavior="100" /> </Storyboard> </BeginStoryboard> </EventTrigger> </WrapPanel.Triggers> </WrapPanel> </ItemsPanelTemplate> </ListBox.ItemsPanel> <ListBox.ItemTemplate> <DataTemplate> <Grid> <Label Content="{Binding}" Width="50" Background="LightGray" /> </Grid> </DataTemplate> </ListBox.ItemTemplate> </ListBox> <Button Content="{Binding Path=State}" Background="{Binding Path=State, Converter={StaticResource StateToColorConverter}}" Width="100" Height="100" Click="Button_Click" /> </StackPanel> code behind snippet public class WrapPanelWidthConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { ObservableCollection<string> aNames = value as ObservableCollection<string>; return -(aNames.Count * 50); } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } } public class StateToColorConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { bool aState = (bool)value; if (aState) return Brushes.Green; else return Brushes.Red; } public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture) { throw new NotImplementedException(); } }

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• Quick access to program shortcut

  - by Nathan DeWitt

  I need to edit a text file on my computer that requires admin access (hosts). I used to do this by hitting WIN and typing "Note". The shortcut for Notepad would show up, and I could right-click and choose Run as Administrator. How do I accomplish the same thing in Windows 8? Notepad isn't something I see pinned to my start menu, and I don't really want to clutter up my menu with something I may use infrequently. I want very quick access to my programs by typing a few letters in the name. If I use WIN-R, I have to know exactly the name of the executable. I want to just type Glob and see options for Sonic Global VPN. And I want to be able to execute that found executable as an admin if I need to. Windows Vista & Windows 7 are excellent at this. Surely this functionality has not been deprecated in Windows 8...

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• What Issue Tracking System to select?

  - by Mikee

  What Issue Tracking Sytem is the most appropriate for fast, big, multilingual and international websites? The system has to handle both technical and content/editorial issues. What's the size and type of your site do you run? Whart System are you using for the keeping it state of the art? Thanks a lot for sharing your good or bad experience.

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• Configuring jdbc-pool (tomcat 7)

  - by john

  i'm having some problems with tomcat 7 for configuring jdbc-pool : i`ve tried to follow this example: http://www.tomcatexpert.com/blog/2010/04/01/configuring-jdbc-pool-high-concurrency so i have: conf/server.xml <GlobalNamingResources> <Resource type="javax.sql.DataSource" name="jdbc/DB" factory="org.apache.tomcat.jdbc.pool.DataSourceFactory" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://localhost:3306/mydb" username="user" password="password" /> </GlobalNamingResources> conf/context.xml <Context> <ResourceLink type="javax.sql.DataSource" name="jdbc/LocalDB" global="jdbc/DB" /> <Context> and when i try to do this: Context initContext = new InitialContext(); Context envContext = (Context)initContext.lookup("java:/comp/env"); DataSource datasource = (DataSource)envContext.lookup("jdbc/LocalDB"); Connection con = datasource.getConnection(); i keep getting this error: javax.naming.NameNotFoundException: Name jdbc is not bound in this Context at org.apache.naming.NamingContext.lookup(NamingContext.java:803) at org.apache.naming.NamingContext.lookup(NamingContext.java:159) pls help tnx

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• Postfix "warning: cannot get RSA private key from file"

  - by phew

  I just followed this tutorial to set up a postfix mailserver with dovecot and mysql as backend for virtual users. Now I got the most parts working, I can connect to pop3 pop3s imap and imaps. Using echo TEST-MAIL | mail [email protected] works fine, when I log into my hotmail account it shows the email. It also works in reverse hence my MX entry for mydomain.com finally has been propagated, so I am being able to receive emails sent from [email protected] to [email protected] and view them in Thunderbird using STARTTLS via IMAP. Doing a bit more research after I got the error message "5.7.1 : Relay access denied" when trying to send mails to [email protected] using Thunderbird being logged into [email protected], I figured out that my server was acting as an "Open Mail Relay", which - ofcourse - is a bad thing. Digging more into the optional parts of the tutorial like shown workaround.org/comment/2536 and workaround.org/ispmail/squeeze/postfix-smtp-auth I decided to complete these steps aswell to be able to send mails via [email protected] through Mozilla Thunderbird, not getting the error message "5.7.1 : Relay access denied" anymore (as common mailservers reject open relayed emails). But now I ran into an error trying to get postfix working with SMTPS, in /var/log/mail.log it reads Sep 28 17:29:34 domain postfix/smtpd[20251]: warning: cannot get RSA private key from file /etc/ssl/certs/postfix.pem: disabling TLS support Sep 28 17:29:34 domain postfix/smtpd[20251]: warning: TLS library problem: 20251:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:650:Expecting: ANY PRIVATE KEY: Sep 28 17:29:34 domain postfix/smtpd[20251]: warning: TLS library problem: 20251:error:140B0009:SSL routines:SSL_CTX_use_PrivateKey_file:PEM lib:ssl_rsa.c:669: That error is logged right after I try to send a mail from my newly installed mailserver using SMTP SSL/TLS via port 465 in Thunderbird. Thunderbird then tells me a timeout occured. Google has a few results concerning that problem, yet I couldn't get it working with any of those. I would link some of them here but as a new user I am only allowed to use two hyperlinks. My /etc/postfix/master.cf looks like smtp inet n - - - - smtpd smtps inet n - - - - smtpd -o smtpd_tls_wrappermode=yes -o smtpd_sasl_auth_enable=yes and nmap tells me PORT STATE SERVICE [...] 465/tcp open smtps [...] my /etc/postfix/main.cf looks like smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) biff = no append_dot_mydomain = no readme_directory = no #smtpd_tls_cert_file = /etc/ssl/certs/postfix.pem #default postfix generated #smtpd_tls_key_file = /etc/ssl/private/ssl-cert-snakeoil.key #default postfix generated smtpd_tls_cert_file = /etc/ssl/certs/postfix.pem smptd_tls_key_file = /etc/ssl/private/postfix.pem smtpd_use_tls = yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_sasl_type = dovecot smtpd_sasl_path = private/auth smptd_sasl_auth_enable = yes smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination myhostname = mydomain.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = /etc/mailname mydestination = localhost.com, localhost relayhost = mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual-mailbox-domains.cf virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual-mailbox-maps.cf virtual_alias_maps = mysql:/etc/postfix/mysql-virtual-alias-maps.cf virtual_transport = dovecot dovecot_destination_recipient_limit = 1 mailbox_command = /usr/lib/dovecot/deliver The *.pem files were created like described in the tutorial above, using Postfix To create a certificate to be used by Postfix use: openssl req -new -x509 -days 3650 -nodes -out /etc/ssl/certs/postfix.pem -keyout /etc/ssl/private/postfix.pem Do not forget to set the permissions on the private key so that no unauthorized people can read it: chmod o= /etc/ssl/private/postfix.pem You will have to tell Postfix where to find your certificate and private key because by default it will look for a dummy certificate file called "ssl-cert-snakeoil": postconf -e smtpd_tls_cert_file=/etc/ssl/certs/postfix.pem postconf -e smtpd_tls_key_file=/etc/ssl/private/postfix.pem I think I don't have to include /etc/dovecot/dovecot.conf here, as login via imaps and pop3s works fine according to the logs. Only problem is making postfix properly use the self-generated, self-signed certificates. Any help appreciated! EDIT: I just tried this different tutorial on generating a self-signed certificate for postfix, still getting the same error. I really don't know what else to test. I also did check for the SSL libraries, but all seems to be fine: root@domain:~# ldd /usr/sbin/postfix linux-vdso.so.1 => (0x00007fff91b25000) libpostfix-global.so.1 => /usr/lib/libpostfix-global.so.1 (0x00007f6f8313d000) libpostfix-util.so.1 => /usr/lib/libpostfix-util.so.1 (0x00007f6f82f07000) libssl.so.0.9.8 => /usr/lib/libssl.so.0.9.8 (0x00007f6f82cb1000) libcrypto.so.0.9.8 => /usr/lib/libcrypto.so.0.9.8 (0x00007f6f82910000) libsasl2.so.2 => /usr/lib/libsasl2.so.2 (0x00007f6f826f7000) libdb-4.8.so => /usr/lib/libdb-4.8.so (0x00007f6f8237c000) libnsl.so.1 => /lib/libnsl.so.1 (0x00007f6f82164000) libresolv.so.2 => /lib/libresolv.so.2 (0x00007f6f81f4e000) libc.so.6 => /lib/libc.so.6 (0x00007f6f81beb000) libdl.so.2 => /lib/libdl.so.2 (0x00007f6f819e7000) libz.so.1 => /usr/lib/libz.so.1 (0x00007f6f817d0000) libpthread.so.0 => /lib/libpthread.so.0 (0x00007f6f815b3000) /lib64/ld-linux-x86-64.so.2 (0x00007f6f83581000) After following Ansgar Wiechers instructions its finally working. postconf -n contained the lines as it should. The certificate/key check via openssl did show that both files are valid. So it indeed has been a permissions problem! Didn't know that chown'ing the /etc/ssl/*/postfix.pem files to postfix:postfix is not enough for postfix to read the files.

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• Mysqldump causes "Too many connections"

  - by vbachev

  A scheduled backup using mysqldump on one of our databases is causing Too many connections. The database is of both InnoDB and MyISAM tables with size of around 500Mb. The Too many connections appears for about 2-3 minutes We understand that mysqldump locks the tables and causes all other queries and connections to pile up and jam the mysql server. We need frequent backups and we cannot afford server downtime or putting websites in maintenance mode while doing it. Our websites are global and traffic is high all the time so its hard to find a moment for backups. How can we avoid downtime during backups?Is there maybe a way to use mysqldump in way that it will not lock all tables at the same time?Is there an alternative to backing up with mysqldump?

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• mod_wsgi on Plesk server

  - by Rogue Coder

  I've installed mod_wsgi on my Plesk server, but I can't get it to behave the way I'd like. If I add WSGIScriptAlias /python /var/www/vhosts/domain.com/httpdocs/python/test.wsgi To my config file, going to http://domain.com/python/blah triggers my test.wsgi script. However, going to any domain on my server and adding /python triggers my script as well. How can I limit it to one specific domain without breaking anything in Plesk? Right now I've tried this and it doesn't work <Directory /var/www/vhosts/domain.com/httpdocs/python> WSGIApplicationGroup %{GLOBAL} AddHandler wsgi-script .wsgi Options ExecCGI Order allow,deny Allow from all </Directory>

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• Silverlight 4.0 - HttpWebRequest throwing ProtocolViolationException.

  - by cmaduro

  I am getting a "System.Net.ProtocolViolationException: Operation is not valid due to the current state of the object." error when trying to call var request = (HttpWebRequest)WebRequest.Create(uri); request.Method = "GET"; request.ContentType = "text/xml"; request.BeginGetRequestStream(RequestCompleted, request);

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• USB Endpoint Stalled Error

  - by Harsha

  Hi All, I am getting "endpoint stalled error" in my CDC device. The usb stack is detecting the cable. The state is set as running but the errorcode is set as 0x11 which indicates 'USB_ENDPOINT_STALLED'. I verified and found that the endpoints has been assigned properly. What would be scenarios when "endpoint stalled error" would be reported? How to handle this? Please advise!

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• How can I enable anonymous access to a Samba share under ADS security mode?

  - by hemp

  I'm trying to enable anonymous access to a single service in my Samba config. Authorized user access is working perfectly, but when I attempt a no-password connection, I get this message: Anonymous login successful Domain=[...] OS=[Unix] Server=[Samba 3.3.8-0.51.el5] tree connect failed: NT_STATUS_LOGON_FAILURE The message log shows this error: ... smbd[21262]: [2010/05/24 21:26:39, 0] smbd/service.c:make_connection_snum(1004) ... smbd[21262]: Can't become connected user! The smb.conf is configured thusly: [global] security = ads obey pam restrictions = Yes winbind enum users = Yes winbind enum groups = Yes winbind use default domain = true valid users = "@domain admins", "@domain users" guest account = nobody map to guest = Bad User [evilshare] path = /evil/share guest ok = yes read only = No browseable = No Given that I have 'map to guest = Bad User' and 'guest ok' specified, I don't understand why it is trying to "become connected user". Should it not be trying to "become guest user"?

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• Most Up-To-Date C# Duck-Typing Library

  - by Anton Gogolev

  The title says it all, basically. What is the current state of the art on duck typing for C# below version 4.0? I know about Duck Typing Project, I know that BLTookit has something to that end, but I'd like to know if I'm missing something really wicked apart from DLR languages and C# 4.0. The inevitable:

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• Jquery Cycle Plugin Question - turning off relative links to photos so it goes to a URL

  - by alpdog14

  I am using Jquery Cycle Plugin and it has a side panel that highlights as the photos change and currently when I click on the text the associated photo pulls up then I have to click on the photo to go to the URL but I would like the text itself to link to the URL. I have looked at the fn.cycle.defaults but not sure what to change and I tried a few things but nothing works. If anyone can help me figure this out it would be most helpful. Here are the fn.cycle.defaults: fx: 'fade', // one of: fade, shuffle, zoom, scrollLeft, etc timeout: 4000, // milliseconds between slide transitions (0 to disable auto advance) continuous: 0, // true to start next transition immediately after current one completes speed: 1000, // speed of the transition (any valid fx speed value) speedIn: null, // speed of the 'in' transition speedOut: null, // speed of the 'out' transition next: null, // id of element to use as click trigger for next slide prev: null, // id of element to use as click trigger for previous slide prevNextClick: null, // callback fn for prev/next clicks: function(isNext, zeroBasedSlideIndex, slideElement) pager: null, // id of element to use as pager container pagerClick: null, // callback fn for pager clicks: function(zeroBasedSlideIndex, slideElement) pagerEvent: null, // event which drives the pager navigation pagerAnchorBuilder: null, // callback fn for building anchor links before: null, // transition callback (scope set to element to be shown) after: null, // transition callback (scope set to element that was shown) end: null, // callback invoked when the slideshow terminates (use with autostop or nowrap options) easing: null, // easing method for both in and out transitions easeIn: null, // easing for "in" transition easeOut: null, // easing for "out" transition shuffle: null, // coords for shuffle animation, ex: { top:15, left: 200 } animIn: null, // properties that define how the slide animates in animOut: null, // properties that define how the slide animates out cssBefore: null, // properties that define the initial state of the slide before transitioning in cssAfter: null, // properties that defined the state of the slide after transitioning out fxFn: null, // function used to control the transition height: 'auto', // container height startingSlide: 0, // zero-based index of the first slide to be displayed sync: 1, // true if in/out transitions should occur simultaneously random: 0, // true for random, false for sequence (not applicable to shuffle fx) fit: 0, // force slides to fit container pause: true, // true to enable "pause on hover" autostop: 0, // true to end slideshow after X transitions (where X == slide count) autostopCount: 0, // number of transitions (optionally used with autostop to define X) delay: 0, // additional delay (in ms) for first transition (hint: can be negative) slideExpr: null, // expression for selecting slides (if something other than all children is required) cleartype: 0, // true if clearType corrections should be applied (for IE) nowrap: 0 // true to prevent slideshow from wrapping }; I have tried changing the pageClick and pagerEvent but nothing seems to be working. Please help!!!

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• How to do auto complete in city textbox

  - by Manoj Wadhwani

  I have state and city dropdown list in asp.net 3.5 applicattion . but i want city as a textbox when i type keyword then autocomplete mode should be occour . I want to implement it through juery could u please send code for this. Thanks Manoj

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• dhcpd: varying vendor-class-identifier

  - by jessicah

  I'm having trouble selectively sending parameters in response to a DHCP Inform packet using groups (or even without, just using host declarations) for bootp stuff. My configuration file right now looks like: subnet 130.123.131.128 netmask 255.255.255.128 { allow unknown-clients; } host dev-mac-09 { option vendor-class-identifier "example-identifier"; hardware ethernet 10:9a:dd:51:ff:83; } If I put vendor-class-identifier in the global scope, using tcpdump I can see that the client receives the vendor class option successfully. If I take it out, and just keep it in the host scope (or group scope), the client never receives the option. Specifying option dhcp-parameter-request list 60 doesn't help either. I did try using a class definition inside a group, but then it applied even if the host wasn't a part of the group. As an aside, how do I get detailed logging? At least something to indicate what groups and things got used to generate the response to the client.

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• PHP shared extensions on Linux

  - by F21

  I am running Ubuntu Server 12.04 and prefer to compile PHP myself as opposed to installing it using apt-get. PHP is running as PHP-FPM. When compiling extensions, I can set it to be compiled as a shared extension using something like --with-bcmath=shared and so on. Are there any benefits to compiling the extensions as shared? I also noticed that the extensions are compiled into a pretty convoluted folder. On my system (my php prefix is /usr/local/php-5.4.9) the extensions end up in /usr/local/php-5.4.9/lib/php/extensions/no-debug-non-zts-20100525. Is there a global way to set a folder so that all shared extensions will be compiled in there? I understand that I can do something like --with-foobar=shared,/usr/local/foobar/ but having to set the extension folder for each shared extension is inefficient and error-prone.

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• How to use SSL Web Services in a Rails application

  - by Mathieu

  Hi, I having a hard time to consume this webservice https://www.arello.com/webservice/verify.cfc?wsdl in my rails application. I successfully generated the ruby files with the wsdl2ruby.rb but when un run the generated script I get the following error: at depth 0 - 20: unable to get local issuer certificate OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed I also tried to connect via this script but same issue require 'http-access2' client = HTTPAccess2::Client.new() client.ssl_config.set_trust_ca('/arello.cert') puts client.get('https://www.arello.com/webservice/verify.cfc?wsdl').content Any ideas? Thanks

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• YUI - Pros and Cons

  - by StackOverflowNewbie

  I'm about to begin a new project and plan to use YUI and my JS and CSS framework for the following reasons: Treeview with tri-state checkboxes (seems to be the best implementation I could find) Calandar (seen others, but since #1 is on YUI, I'm glad it also has calendar) CSS framework (was going to use 960, but might as well go 100% Yahoo) I plan to use only 1 JS framework. Does anyone see any problems with my decision?

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