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• How do I solve this error: ssh_exchange_identification: Connection closed by remote host

  - by bernie

  data@server01:~$ ssh [email protected] -vvv OpenSSH_5.5p1 Debian-6, OpenSSL 0.9.8o 01 Jun 2010 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to 10.7.4.1 [10.7.4.1] port 22. debug1: Connection established. debug3: Not a RSA1 key file /home/data/.ssh/id_rsa. debug2: key_type_from_name: unknown key type '-----BEGIN' debug3: key_read: missing keytype debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug3: key_read: missing whitespace debug2: key_type_from_name: unknown key type '-----END' debug3: key_read: missing keytype debug1: identity file /home/data/.ssh/id_rsa type 1 debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048 debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048 debug1: identity file /home/data/.ssh/id_rsa-cert type -1 debug1: identity file /home/data/.ssh/id_dsa type -1 debug1: identity file /home/data/.ssh/id_dsa-cert type -1 ssh_exchange_identification: Connection closed by remote host

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• Linux commands shows different results

  - by ClydeFrog

  I'm really having a hard time to process these results on my Ubuntu server. I have a major problem with my JBoss server where I get FileNotFoundExceptions along with "No space left on device" errors. And I thought "maybe I'm out of disk space", and used df command to figure out how much I have left: root@ubuntu1:/# df -h Filsystem Storlek Anvnt Tillg Anv% Monterat på /dev/mapper/ubuntu1-root 36G 13G 21G 38% / none 2,0G 192K 2,0G 1% /dev none 2,0G 0 2,0G 0% /dev/shm none 2,0G 64K 2,0G 1% /var/run none 2,0G 0 2,0G 0% /var/lock /dev/sda1 228M 23M 193M 11% /boot /dev/mapper/vgdata-lvdata 79G 9,2G 66G 13% /data And as you can see, I have plenty of space left. And I also checked if I'm out of i-nodes: root@ubuntu1:/# df -i Filsystem Inoder IAnv IFria IAnv% Monterat på /dev/mapper/ubuntu1-root 2346512 61992 2284520 3% / none 505380 773 504607 1% /dev none 507383 1 507382 1% /dev/shm none 507383 30 507353 1% /var/run none 507383 2 507381 1% /var/lock /dev/sda1 124496 230 124266 1% /boot /dev/mapper/vgdata-lvdata 10486784 233945 10252839 3% /data But then i used du: root@ubuntu1:/# du -s -h /* 7,5M /bin 23M /boot 19G /data 192K /dev 11G /eniro 5,3M /etc 112K /home 0 /initrd.img 183M /lib 0 /lib64 16K /lost+found 12K /media 4,0K /mnt 4,0K /opt du: kan inte komma åt "/proc/20452/task/20452/fd/3": Filen eller katalogen finns inte du: kan inte komma åt "/proc/20452/task/20452/fdinfo/3": Filen eller katalogen finns inte du: kan inte komma åt "/proc/20452/fd/3": Filen eller katalogen finns inte du: kan inte komma åt "/proc/20452/fdinfo/3": Filen eller katalogen finns inte 0 /proc 18M /root 8,2M /sbin 4,0K /selinux 8,0K /srv 0 /sys 40K /tmp 691M /usr 1,2G /var 0 /vmlinuz Notice that /data and /eniro are 30G combined! How is it possible? Do I have a memory leak somewhere? Or is it something else? ----- EDIT 1 ----- Ok, I figured out that /data has its own mount so it's not possible to combine /data and /eniro because they aren't on the same mount. But how come it says 9,2G on the first command when it says 19G on the third on directory /data?

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• Copy one db diagram from one db to another on different servers? (Same db)

  - by sah302

  I used the copy database wizard to copy my database from our test server to our production server, the database copied everything fine except for the diagram. Okay no problem, first I make sure the target database on production has the support objects created to use database diagraming. Then I select to import data from the other database and chose the dbo.sysdiagrams.Go through with the rest of the import data wizard, but then I get the following error: Validating (Error) Messages Error 0xc0202049: Data Flow Task: Failure inserting into the read-only column "diagram_id". (SQL Server Import and Export Wizard) Error 0xc0202045: Data Flow Task: Column metadata validation failed. (SQL Server Import and Export Wizard) Error 0xc004706b: Data Flow Task: "component "Destination - sysdiagrams" (31)" failed validation and returned validation status "VS_ISBROKEN". (SQL Server Import and Export Wizard) Error 0xc004700c: Data Flow Task: One or more component failed validation. (SQL Server Import and Export Wizard) Error 0xc0024107: Data Flow Task: There were errors during task validation. (SQL Server Import and Export Wizard) So apparently it didn't like that. What's the problem? I am pretty beginner in SQL Server and only do stuff via the GUI usually so am not sure what to do at this point. The databases are the same, but on different servers. Thanks!

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• How do I collect SNMP readings from intermittently-connected sites?

  - by Luke404

  I am collecting SNMP data on-site for a number of systems, currently using Cacti. These systems are spread on a number of sites that aren't always connected to internet, but I also need to centralize the data on a single system (datacenter housed server) and get graphs out of it. If I directly poll remote systems with a centralized Cacti I'd loose data when a site is not connected to internet. I should record data on-site (I have a server at each site and I can run whatever I want on it) and then 'sync' everything to the central system. One hack could be a cacti or directly an rrdtool on site and then periodically rsync RRD data to the central Cacti system, but that doesn't sound like a 'clean' solution: every RRD would have to be defined at both places and rsync scripts setup with the specific file names. Can you suggest a better solution? Cacti is not a requirement but I'd like to use something like that on the central system. On-site systems need only to collect data I don't need to graph it there or manage users rights to view data and stuff like that, users will only access the centralized system.

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• How to access previous VHD versions of system backup?

  - by feklee

  Quote from the 31 Oct 2009 TechNet article "Learn more about system image backup": During the first backup, the backup engine scans the source drive and copies only blocks that contain data into a .vhd file stored on the target, creating a compact view of the source drive. The next time a system image is created, only new and changed data is written to the .vhd file, and old data on the same block is moved out of the VHD and into the shadow copy storage area. Volume Shadow Copy Service is used to compute the changed data between backups, as well as to handle the process of moving the old data out to the shadow copy area on the target. This approach makes the backup fast (since only changed blocks are backed up) and efficient (since data is stored in a compact manner). When restoring the image, blocks will be restored to their original locations on the source disk. If you want to restore from an older backup, the engine reads from the shadow copy area and restores the appropriate blocks. For the last days, a daily system backup of drive C: to drive E: has been scheduled and run by Windows 7 Backup and Restore. Drive C: currently holds 233 GB of data, which fits comfortably on drive E:, a 1 TB drive, with 727 GB of free space remaining. How do I access the previous version of a VHD? I right clicked on files and folders in E:\WindowsImageBackup, and I looked for Previous Versions but always: There are no previous versions available

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• How to import a text file into powershell and email it, formatted as HTML

  - by Don

  I'm trying to get a list of all Exchange accounts, format them in descending order from largest mailbox and put that data into an email in HTML format to email to myself. So far I can get the data, push it to a text file as well as create an email and send to myself. I just can't seem to get it all put together. I've been trying to use ConvertTo-Html but it just seems to return data via email like "pageFooterEntry" and "Microsoft.PowerShell.Commands.Internal.Format.AutosizeInfo" versus the actual data. I can get it to send me the right data if i don't tell it to ConvertTo-Html, just have it pipe the data to a text file and pull from it, but it's all ran together with no formatting. I don't need to save the file, i'd just like to run the command, get the data, put it in HTML and mail it to myself. Here's what I have currently: #Connects to Database and returns information on all users, organized by Total Item Size, User $body = Get-MailboxStatistics -database "Mailbox Database 0846468905" | where {$_.ObjectClass -eq “Mailbox”} | Sort-Object TotalItemSize -Descending | ft @{label=”User”;expression={$_.DisplayName}},@{label=”Total Size (MB)”;expression={$_.TotalItemSize.Value.ToMB()}} -auto | ConvertTo-Html #Pause for 5 seconds for Exchange write-host -foregroundcolor Green "Pausing for 5 seconds for Exchange" Start-Sleep -s 5 $toemail = "[email protected]" # Emails report to this address. $fromemail = "[email protected]" #Emails from this address. $server = "Exchange.company.com" #Exchange server - SMTP. #Email the report. $email = New-Object System.Net.Mail.MailMessage $email.IsBodyHtml = $True $email.To.Add($toemail) $email.From = $fromemail $email.Subject = "Exchange Mailbox Sizes" $email.Body = $body $client = New-Object System.Net.Mail.SmtpClient $server $client.UseDefaultCredentials = $true $client.Send($email) Any thoughts would be helpful, thanks!

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• High speed network configuration

  - by Peter M

  Sorry if this seems to be a stupid question, I'm not sure how to specify what I want to know when checking google. I will have 2 or 3 devices pumping out data on a 100Base-T port. The combined data rate of all devices is about 15KB/S which exceeds the optimal 100Base-T channel capacity (12KB/S), but well within the realms of a 1000Base-T connection. Each device will be sending a burst of data in the form of an FTP transfer to a common, single host computer in a sequential manner ie: Device A establishes FTP connection and transfers data Device B establishes FTP connection and transfers data Device C establishes FTP connection and transfers data It may be that the A&B, B&C and C&A transfers overlap in the time domain to some extent. There will be minimal traffic going back from the computer to each device (in general what ever is needed to support the FTP transfers), and the network will be dedicated to transferring data between these devices and the host computer. Is it possible to use a switch to combine the multiple incoming 100Base-T streams into a single outgoing 1000Base-T stream? if so what features in a switch should I be looking for? Or would it be better to have 3 physical point-to-point 100Base-T dedicated connections between each device and the host computer? (thus having at least 3 physical Ethernet interfaces on that computer) Note that I can't change the interface on the devices, but I am free to choose the network and host computer configuration. Thanks for you help Peter

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• break Folder Protection, Folder Guard Lock or Folder in Windows XP?

  - by SonyAdi

  when I'm making a new partition by the partition magic. Then all of a sudden power failure. Unfortunately because my computer is not equipped with UPS (Power supply Uniterruptible), my computer finally died, too. When power is restored, I tried to turn on the computer. Suddenly my computer can not boot normally into windows. Option through safemode and others all I've tried. The result fails, can not boot at all, into safe mode also can not. And I know the cause. Partition Magic did not finish the work and stopped in the middle of the road and cause the transfer of data files or stopped, finally file2 any default windows were destroyed as well. Unfortunately my important data I store in my document. Finally, I take my hard drive to a friend. Hopes to open a computer hard drive through friend, at least I could save my important data, and then I can install window again by reformatting my hard drive is first. I read the hard drive in explorer my friend, complete with their data, but the data of my important data in my document can not get to go because it requires administrator privileges or the original user's default start my windows (my computer) to open my document folder tersebut.Ini actually very similar to the work or Folder Protection Folder Guard. result I was disappointed and almost desperate to get back my important data is. how do i break Folder Protection, Folder Guard Lock or Folder in Windows XP?

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• How to migrate WinXP from failing old HD to new one

  - by Péter Török

  Following this issue, we have all our important data backed up now. I also bought and installed a new replacement hard disk (WD 160GB PATA) as secondary (slave) drive. I created two primary NTFS partitions on it: a 40 GB system partition, and a 110GB data partition. In theory I could start reinstalling WinXP from scratch on the new system partition, then copying over all user data from the old drive to the new data partition. Once this is done, I could even throw away the old drive, or keep it just to see what happens. (Note: I don't want to clone the whole drive as it contains a dual boot setup with an old Linux installation which I don't need anymore, and anyway, a fresh reinstall would do WinXP good to get rid of many years' clutter.) However, I am lazy :-) The old HD is still functioning, the problem has not manifested again since. So I feel there is no need to hurry with a complete OS reinstall. What I don't know though is whether I will be able to install WinXP on the new system partition at a later stage without affecting the contents of the data partition on the same drive. If this is possible, I can just move over all our data to the new data partition to have it safe, then continue running WinXP from the old drive as long as it works. Does anyone see any problems/risks with this plan?

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• User permissions linux. (proftpd / nginx)

  - by user55745

  I've been having a complete nightmare trying to configure proftpd. I've got proftp server working with an sql database. However I want to have any files uploaded able to viewed by the webserver running on the same box. The folders get created in /var/tmp/ as rwx------ 2 ftpuser ftpgroup 4096 Oct 8 20:35 50730c4346512 drwx------ 2 ftpuser ftpgroup 4096 Oct 8 20:38 50730f3a811ca I've tried adding www-data to group with the following usermod -g www-data ftpuser But this doesn't allow the web server access. In proftpd.conf I have the following umask set Umask 0022 It doesn't seem to make a difference what I set that value to. /etc/group (sure I've messed up one of these two but I'm getting desperate) ftpgroup:x:2001:www-data www-data:x:33:ftpgroup /etc/passwd www-data:x:33:33:www-data:/var/www:/bin/sh proftpd:x:108:65534::/var/run/proftpd:/bin/false ftp:x:109:65534::/srv/ftp:/bin/false ftpuser:x:2001:33:proftpd user www-data:/bin/null:/bin/false The ftpuser table in the database has uid / gid set to 2oo1 for both. I'm going absolutely crazy trying to solve this any help would be greatly appreciated. p.s Also, although if I manually connect to the ftp server I can upload files via FileZilla. Although this isn't working for the web-camera, although there is talky talky going on between the server and the camera.

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• redirecting output from telnet / nc to file in script fails when cron'd

  - by qhartman

  So, I have device on my network which sits there listening on a port for a connection, and when a connection is made it dumps ascii data out. I need to capture that data to a file. I wrote a dead simple shell script that does this: #!/bin/bash #Config Variables. Age is in Days. DATA_ROOT=/root/data FILENAME=data_`date +%F`.dat HOST=device COMPRESS_AGE=3 #Sanity Checks if [ ! -e $DATA_ROOT ] then echo "The directory $DATA_ROOT seems to not exist. Please create it." exit 1 fi if [ -e $DATA_ROOT/$FILENAME ] then echo "You seem to have extracted data already today. Aborting" exit 1 fi #Get Data nc $HOST 2202 > $DATA_ROOT/$FILENAME #Compress old Data find $DATA_ROOT -type f -mtime +$COMPRESS_AGE -exec gzip {} \; exit 0 It works great when I run it by hand, but when I run it from cron, it doesn't capture any of the output. If I replace nc with telnet I see the initial telnet headers about escape sequences and whatnot, but not the data. Ideas? I've tried forcing bash to act like an interactive shell with -i. I've tried redirecting both stderr and stdout. I know it's got to be some silly simple thing, but I'm utterly failing. This is driving me nuts... EDIT I also just noticed that the nc processes from all my previous attempts at this have been siting sleeping, and when I killed them, cron sent me a bunch of non-sensical error messages. At least now I have something to dig into!

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• Exception "The operation is not valid for the state of the transaction" using TransactionScope

  - by Lanfear

  We have a web service on server #1 and a database on server #2. Web service uses transaction scope to produce distributed transaction. Everything is correct. And we have another database on server #3. We had some problems with this server and we reinstalled operation system and software. We configured MSDTC and tried to use web service from server #1 to communicate with database on this server. And now after first select statement within transaction scope we get: "The operation is not valid for the state of the transaction". This exception falls in every web service request if it is using transaction scope. Server #2 and Server #3 is almost similar. The difference can be only in settings. .NET framework 3.5 SP1 installed and SQL Server SP3 on all servers. Full stacktrace: System.Transactions.TransactionState.EnlistPromotableSinglePhase(InternalTransaction tx, IPromotableSinglePhaseNotification promotableSinglePhaseNotification, Transaction atomicTransaction) ? System.Transactions.Transaction.EnlistPromotableSinglePhase(IPromotableSinglePhaseNotification promotableSinglePhaseNotification) ? System.Data.SqlClient.SqlInternalConnection.EnlistNonNull(Transaction t ? System.Data.SqlClient.SqlInternalConnection.Enlist(Transaction t ? System.Data.SqlClient.SqlInternalConnectionTds.Activate(Transaction transaction) ? System.Data.ProviderBase.DbConnectionInternal.ActivateConnection(Transaction transaction) ? System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) ? System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) ? System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) ? System.Data.SqlClient.SqlConnection.Open() ? NHibernate.Connection.DriverConnectionProvider.GetConnection() ? NHibernate.Impl.SessionFactoryImpl.OpenConnection() I searched this message but didn't found any appropriate solution. So what settings should I check and what exactly should I do to fix it?

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• Silverlight DataGrid: Hiding columns using VisualStateManager

  - by Lars Udengaard

  Is it possible to hide a column of a datagrid, without using codebehind? E.g. by using the VisualStateManager? <UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data" x:Class="Buttons.MainPage" Width="640" Height="480"> <StackPanel x:Name="LayoutRoot" Width="624" HorizontalAlignment="Right" Margin="0,0,8,0" > <VisualStateManager.VisualStateGroups> <VisualStateGroup x:Name="EditStates"> <VisualState x:Name="ReadOnly" /> <VisualState x:Name="Edit"> <Storyboard> <ObjectAnimationUsingKeyFrames Storyboard.TargetName="ShownInEditMode" Storyboard.TargetProperty="(UIElement.Visibility)" BeginTime="00:00:00" Duration="00:00:00.0010000"> <DiscreteObjectKeyFrame KeyTime="00:00:00"> <DiscreteObjectKeyFrame.Value> <Visibility>Visible</Visibility> </DiscreteObjectKeyFrame.Value> </DiscreteObjectKeyFrame> </ObjectAnimationUsingKeyFrames> </Storyboard> </VisualState> </VisualStateGroup> </VisualStateManager.VisualStateGroups> <data:DataGrid AutoGenerateColumns="False" ItemsSource="{Binding BBRNumbers}"> <data:DataGrid.Columns> <data:DataGridTextColumn Header="AlwaysShown" Width="80" Binding="{Binding Municipality}" /> <data:DataGridTextColumn Header="ShownInEditMode" Width="73" Binding="{Binding Estate}" Visibility="Collapsed" /> </data:DataGrid.Columns> </data:DataGrid> </StackPanel> Calling the following should then hide the column, but this doesnt work. VisualStateManager.GoToState(this, "Edit", false); Any ideas?

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• Generate authenticated CMSEnvelopedData Messages with bouncycastle

  - by levinalex

  I am trying to encrypt data with a password and store it inside a ASN.1 encoded CMS message (using C# and BouncyCastle 1.4) The code I have seems to have two problems: the data does not seem to be signed with a HMAC, so when I tamper with the encodedData (by enabling the commented out line), the decryption still succeeds. when I decrypt the data I have tampered with, I get beck corrupted plain text. However only a two blocks of plaintext data are corrupted. This seems to suggest that the encryption does not actually use CBC mode. (edit: disregard the second point, this is exactly how CBC is supposed to work) This is what I am testing with: public void TestMethod1() { byte[] data = new byte[1024]; // plaintext: a list of zeroes CmsEnvelopedDataGenerator generator = new CmsEnvelopedDataGenerator(); CmsPbeKey encryptionKey = new Pkcs5Scheme2PbeKey("foo", new byte[] { 1, 2, 3 }, 2048); generator.AddPasswordRecipient(encryptionKey, CmsEnvelopedDataGenerator.Aes256Cbc); CmsProcessableByteArray cmsByteArray = new CmsProcessableByteArray(data); CmsEnvelopedData envelopeData = generator.Generate(cmsByteArray, CmsEnvelopedDataGenerator.Aes256Cbc); byte[] encodedData = envelopeData.GetEncoded(); // encodedData[500] = 10; // tamper with the data RecipientID recipientID = new RecipientID(); CmsEnvelopedData decodedEnvelopeData = new CmsEnvelopedData(encodedData); RecipientInformation recipient = decodedEnvelopeData.GetRecipientInfos().GetFirstRecipient(recipientID); byte[] data2 = recipient.GetContent(encryptionKey); CollectionAssert.AreEqual(data, data2); } What am I doing wrong? What would be the correct way to write this?

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• Extjs DataView ArrayStore problem

  - by cvista

  Hi I have the following JS: http://monobin.com/__m1c171c4e and the following code: Code: var tpl = new Ext.XTemplate( '<tpl for=".">', '<div class="thumb-wrap" id="{Name}">', '<div class="thumb"><img src="{ImageMedium}" title="{Name}"></div>', '<span class="x-editable">{Name}</span></div>', '</tpl>', '<div class="x-clear"></div>' ); var store = new Ext.data.ArrayStore({ fields: [{ name: 'name' }, { name: 'ImageMedium'}], data: res.data.SimilarArtists }); var panel = new Ext.Panel({ frame: true, width: 535, autoHeight: true, collapsible: true, layout: 'fit', title: 'Simple DataView (0 items selected)', items: new Ext.DataView({ store: store, tpl: tpl, autoHeight: true, multiSelect: true, overClass: 'x-view-over', itemSelector: 'div.thumb-wrap', emptyText: 'No images to display', prepareData: function (data) { data.Name = Ext.util.Format.ellipsis(data.Name, 15); return data; }, plugins: [ new Ext.DataView.DragSelector(), new Ext.DataView.LabelEditor({ dataIndex: 'name' }) ], listeners: { selectionchange: { fn: function (dv, nodes) { } } } }) }); So binding the DataView to the child array of res.data.SimilarArtists But nothing seems to happen? prepareData doesnt even get called? What am i doing wrong? w://

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• How do I connect to SDF on a Mobile device from desktop application?

  - by pitprog

  C# WinForms .Net 3.5 to SQL CE 3.5 on Mobile 6.1 Device I'd like to make a connection from a desktop application to a SDF database on my Windows Mobile device while it's connected via ActiveSync. Visual Studio lets me create a Data Connection to my device. The connections tests OK and I can view the data in the database using Visual Studio. I then create a form and try to fill a DataGridView. When I run the program I get an error that the path to the data base is not valid. How am I supposed to specify the Mobile device path in the connection string? In my App.Config, I've tried variations on the path, but none of them work: connectionString="Data Source=Mobile Device\Program Files\SqlCeViaActiveSync\Orders.sdf" connectionString="Data Source=\Mobile Device\Program Files\SqlCeViaActiveSync\Orders.sdf" connectionString="Data Source=Program Files\SqlCeViaActiveSync\Orders.sdf" connectionString="Data Source=\Program Files\SqlCeViaActiveSync\Orders.sdf" The full connection string section looks like this: <connectionStrings> <add name="SqlCeViaActiveSync.Properties.Settings.OrdersConnectionString" connectionString="Data Source=Mobile Device\Program Files\SqlCeViaActiveSync\Orders.sdf" providerName="Microsoft.SqlServerCe.Client.3.5" /> </connectionStrings> Also, I did make a reference to Microsoft.SqlServerCe.Client, as I found a few articles that mentioned it was necessary. Can anyone point me to some recent articles/samples or let me know what I'm doing wrong? Thanks!

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• Understanding ItemsSource and DataContext in a DataGrid

  - by Ben McCormack

  I'm trying to understand how the ItemsSource and DataContext properties work in a Silverlight Toolkit DataGrid. I'm currently working with dummy data and trying to get the data in the DataGrid to update when the value of a combo box changes. My MainPage.xaml.vb file currently looks like this: Partial Public Class MainPage Inherits UserControl Private IssueSummaryList As List(Of IssueSummary) Public Sub New() GetDummyIssueSummary("Day") InitializeComponent() dgIssueSummary.ItemsSource = IssueSummaryList 'dgIssueSummary.DataContext = IssueSummaryList ' End Sub Private Sub GetDummyIssueSummary(ByVal timeInterval As String) Dim lst As New List(Of IssueSummary)() 'Generate dummy data for lst ' IssueSummaryList = lst End Sub Private Sub ComboBox_SelectionChanged(ByVal sender As System.Object, ByVal e As System.Windows.Controls.SelectionChangedEventArgs) Dim cboBox As ComboBox = CType(sender, ComboBox) Dim cboBoxItem As ComboBoxItem = CType(cboBox.SelectedValue, ComboBoxItem) GetDummyIssueSummary(cboBoxItem.Content.ToString()) End Sub End Class My XAML currently looks this for the DataGrid: <sdk:DataGrid x:Name="dgIssueSummary" AutoGenerateColumns="False" > <sdk:DataGrid.Columns> <sdk:DataGridTextColumn Binding="{Binding ProblemType}" Header="Problem Type"/> <sdk:DataGridTextColumn Binding="{Binding Count}" Header="Count"/> </sdk:DataGrid.Columns> </sdk:DataGrid> The problem is that if I set the value of the ItemsSource property of the data grid equal to IssueSummaryList, it will display the data when it loads, but it won't update when the underlying IssueSummaryList collection changes. If I set the DataContext of the grid to be IssueSummaryList, no data will be displayed when it renders. I must not understand how ItemsSource and DataContext are supposed to function, because I expect one of those properties to "just work" when I assign a List object to them. What do I need to understand and change in my code so that as data changes in the List, the data in the grid is updated?

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• Blockchain API, AJAX request has stopped working, CORS issues?

  - by Sly

  I've been playing with the multiple address look up API from blockchain info (documented here https://blockchain.info/api/blockchain_api), I had my code working earlier in the day but bizzarely it's stopped. The purpose of it is to eventually write a little JQuery library which will search the DOM for bitcoin addresses as data attributes and then insert the final balance into that element creating a polling mechanism to keep the page updated as well. The original problem I ran into earlier while developing it was because it's a CORS ajax request but later I adjusted the query per the blockchain info API documents and I added cors=true it then seemed to work fine but now it doesn't seem to want to work at all again. I don't get how changing computers would effect this kind of request. Here's my code on JSFiddle, http://jsfiddle.net/SlyFoxy12/9mr7L/7/ My primary code is: (function ($) { var methods = { init: function(data, options) { //put your init logic here. }, query_addresses: function(addresses) { var addresses_implode = addresses.join("|"); $.getJSON("http://blockchain.info/multiaddr?cors=true&active="+addresses_implode, function( data ) { $.each( data.addresses, function( index ) { $('#output').append(" "+data.addresses[index].final_balance); }); }); } }; $.fn.bitstrap = function () { var addresses = new Array(); $('[data-xbt-address]').each(function () { $(this).text($(this).data('xbtAddress')); addresses.push($(this).data('xbtAddress')); }); methods.query_addresses(addresses); } }(jQuery)); $().ready(function() { $().bitstrap(); });

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• Why isn't jQuery automatically appending the JSONP callback?

  - by Aseem Kishore

  The $.getJSON() documentation states: If the specified URL is on a remote server, the request is treated as JSONP instead. See the discussion of the jsonp data type in $.ajax() for more details. The $.ajax() documentation for the jsonp data type states (emphasis mine): Loads in a JSON block using JSONP. Will add an extra "?callback=?" to the end of your URL to specify the callback. So it seems that if I call $.getJSON() with a cross-domain URL, the extra "callback=?" parameter should automatically get added. (Other parts of the documentation support this interpretation.) However, I'm not seeing that behavior. If I don't add the "callback=?" explicitly, jQuery incorrectly makes an XMLHttpRequest (which returns null data since I can't read the response cross-domain). If I do add it explicitly, jQuery correctly makes a <script> request. Here's an example: var URL = "http://www.geonames.org/postalCodeLookupJSON" + "?postalcode=10504&country=US"; function alertResponse(data, status) { alert("data: " + data + ", status: " + status); } $.getJSON(URL, alertResponse); // alerts "data: null, status: success" $.getJSON(URL + "&callback=?", alertResponse); // alerts "data: [object Object], status: undefined" So what's going on? Am I misunderstanding the documentation or forgetting something? It goes without saying that this isn't a huge deal, but I'm creating a web API and I purposely set the callback parameter to "callback" in the hopes of tailoring it nicely to jQuery usage. Thanks!

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• Win32: What is the status of chunked encoding support in WinHttpReadData?

  - by Cheeso

  The documentation for WinHttpReadData says, regarding HTTP's chunked transfer coding: Starting in Windows Vista and Windows Server 2008, WinHttp enables applications to perform chunked transfer encoding on data sent to the server. When the Transfer-Encoding header is present on the WinHttp response, WinHttpReadData strips the chunking information before giving the data to the application. Can anyone decipher this? Q1 First, this text is on the page for WinHttpReadData, which is used to ... read data within an HTTP client application, specifically the response data. So what does it mean when it says Starting in Windows Vista and Windows Server 2008, WinHttp enables applications to perform chunked transfer encoding on data sent to the server. The WinHttpReadData function isn't used with data being sent to the server. It is used when reading data from the server. Consulting the doc for the WinHttpWriteData function, which is used to send data to the server as part of an HTTP request, there is no mention of the chunked transfer capability. Q2 Supposing that I figure out just what the newish chunked transfer support amounts to, how do I get that support? It says that it is new on Vista and WS2008. What happens if I write an app that runs on WS2003, and uses WinHttpReadData and it encounters a chunked response, or WinHttpWriteData, and it wants to send a chunked request? Between the lines, is this documentation saying that I need to link against the Vista-era Windows SDK, or later, in order to get the capability to do chunked encoding? Or is it really impossible on WS2003?, in other words it is the case that the app doing chunked transfer using this library must run on the OS specified? This might read like a rant, but it's not. I truly want to know.

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• Parse MIME messages

  - by Abhimanyu

  Hi, For my new project which has email module.i need to show all the email information on web.when i m making a call to server i m getting the base64 encoded mime data. after applying base64 decoding technique i m getting the mime data as follows: /*****************Mime data start *******************************/ From [email protected] Tue Jun 23 12:01:02 2009 Date: Tue, 23 Jun 2009 12:01:02 +0530 From: Prashant R Naik <[email protected]> To: [email protected] Subject: This is a test mail Message-ID: <[email protected]> Reply-To: Prashant R Naik <[email protected]> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="ReaqsoxgOBHFXBhH" Content-Disposition: inline User-Agent: Mutt/1.5.18 (2008-05-17) Status: RO Content-Length: 1912 Lines: 52 --ReaqsoxgOBHFXBhH Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Test mail. Initiated by prashant Regards, -- Prashant R Naik Principal Technologist | Symbian & Web2.0 Geodesic Limited | www.geodesic.com Tel: +91-80-66551000 --ReaqsoxgOBHFXBhH Content-Type: image/gif Content-Disposition: attachment; filename="trash.gif" Content-Transfer-Encoding: base64 R0lGODlhEAAQANUoADJ8wTqU2DmR1TqV2DN9wTSBxTWFyTaGyTJ9wTWGyTaKzjmS1TOAxTuV 2DaFyTN8wDiN0jiO0jSAxTeKzjqS1DN8wTqR1TWFyjB4vTOBxTmO0TmS1DaKzTeJzTqV1zSA xDJ8wDqS1TeKzTF4vDF4vTiO0f///zuX2gAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAACgALAAA AAAQABAAAAaDQNRpSCwWhcakcsk8mZ5Qpik5pUKvT2W1uDVWp+BiYNAImAZmz/lcDoQEFoFp QTFtTPKFQLCAREolJiURJhCCJhqAJRMiIhwmjSYdJgqUjQoODgkJJgecBp0mBgYXBx8ZBQxY UAUSDAUACLEPDwgEAAAEIBUEtygkIyMkwMMYw8EjKEEAOw== --ReaqsoxgOBHFXBhH Content-Type: image/jpeg Content-Disposition: attachment; filename="bx.jpg" Content-Transfer-Encoding: base64 /9j/4AAQSkZJRgABAQEASABIAAD/2wBDAAEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEB AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/2wBDAQEBAQEBAQEBAQEBAQEB AQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQH/wAAR CAAUAAoDAREAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAn/xAAYEAEAAwEAAAAAAAAA AAAAAAAAGWen5//EABQBAQAAAAAAAAAAAAAAAAAAAAD/xAAUEQEAAAAAAAAAAAAAAAAAAAAA /9oADAMBAAIRAxEAPwCb4AJHym0Vp3PQJTaK07noJHgA/9k= --ReaqsoxgOBHFXBhH Content-Type: image/png Content-Disposition: attachment; filename="day_bg.png" Content-Transfer-Encoding: base64 iVBORw0KGgoAAAANSUhEUgAAAGQAAAApCAYAAADDJIzmAAAABmJLR0QA/wD/AP+gvaeTAAAA CXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH2AwCCS0kTriU2QAAAB10RVh0Q29tbWVudABD cmVhdGVkIHdpdGggVGhlIEdJTVDvZCVuAAAAXElEQVR42u3bQQEAMAgDMZiqiZtP5AwbfeQk NO/WvPtLMR0TABEQIAICRECACAgQAREQIAICRECACAgQAREQIAICRECACAgQAREQIAICRECA CAgQARGQ7NpPPasFT+0FZPjBRwYAAAAASUVORK5CYII= --ReaqsoxgOBHFXBhH-- /*****************Mime data end *******************************/ now the problem is i have to parse this data and use it in my application.since this data is not a xml so it difficult to parse it (because parsing with some tag is easy).so any one who knows how to parse mime data help be.i m using erlang to parse this data. Thank you in advance

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• ps forrest for session id

  - by azatoth

  Often I want to get a nice readout what process are running and their relationship; I usually by habit runs ps auxfww and eventual grep for the process in question. Having been thinking about the problem I tried to create an oneliner to get the process tree in ps ufww format for all processes which has the session id specified by arbitrary process name(s); ending up in following code: ps ufww --sid=$(ps -C apache2 -o sess --no-headers | sort | uniq | grep -v -E '^ +0$' | awk 'NR==1{x=$0;next}NF{x=x","$0};END{gsub(/[[:space:]]*/,"",x);print x}') giving for example following output: USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 4157 0.0 0.1 41264 3120 ? Ss Jun11 0:00 /usr/sbin/apache2 -k start www-data 4329 0.0 0.0 41264 1976 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4330 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4331 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4332 0.0 0.0 41264 2028 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 4333 0.0 0.0 41264 2032 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6648 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6654 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start www-data 6655 0.0 0.0 41264 1884 ? S Jun11 0:00 \_ /usr/sbin/apache2 -k start I do wonder now if anyone has an better idea to solve this issue? Are there anything out there that is easier to "oneline" and gives above or better information? For example I would actually want to have included all childs relative any parent. (uncertain if this should be on SF instead, but felt it was more like an programming question)

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• Looking for ideas for a simple pattern matching algorithm to run on a microcontroller

  - by pic_audio

  I'm working on a project to recognize simple audio patterns. I have two data sets, each made up of between 4 and 32 note/duration pairs. One set is predefined, the other is from an incoming data stream. The length of the two strongly correlated data sets is often different, but roughly the same "shape". My goal is to come up with some sort of ranking as to how well the two data sets correlate/match. I have converted the incoming frequencies to pitch and shifted the incoming data stream's pitch so that it's average pitch matches that of the predefined data set. I also stretch/compress the incoming data set's durations to match the overall duration of the predefined set. Here are two graphical examples of data that should be ranked as strongly correlated: http://s2.postimage.org/FVeG0-ee3c23ecc094a55b15e538c3a0d83dd5.gif (Sorry, as a new user I couldn't directly post images) I'm doing this on a 8-bit microcontroller so resources are minimal. Speed is less an issue, a second or two of processing isn't a deal breaker. It wouldn't surprise me if there is an obvious solution, I've just been staring at the problem too long. Any ideas? Thanks in advance...

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• dojox.grid.DataGrid populated from Servlet

  - by jeff porter

  I'd like to hava a Dojo dojox.grid.DataGrid with its data from a servlet. Problem: The data returned from the servlet does not get displayed, just the message "Sorry, an error has occured". If I just place the JSON string into the HTML, it works. ARRRRGGH. Can anyone please help me! Thanks Jeff Porter Servlet code... public void doGet(HttpServletRequest req, HttpServletResponse resp) { res.setContentType("json"); PrintWriter pw = new PrintWriter(res.getOutputStream()); if (response != null) pw.println("[{'batchId':'2001','batchRef':'146'}]"); pw.close(); } HtmL code... <div id="gridDD" dojoType="dojox.grid.DataGrid" jsId="gridDD" style="height: 600x; width: 100%;" store="ddInfo" structure="layoutHtmlTableDDDeltaSets"> </div> var rawdataDDInfo = ""; // empty at start ddInfo = new dojo.data.ItemFileWriteStore({ data: { identifier: 'batchId', label: 'batchId', items: rawdataDDInfo } }); <script> function doSelectBatchsAfterDate() { var xhrArgs = { url: "../secure/jsonServlet", handleAs: "json", preventCache: true, load: function(data) { var xx =dojo.toJson(data); var ddInfoX = new dojo.data.ItemFileWriteStore({data: xx}); dijit.byId('gridDD').setStore(ddInfoX); }, error: function(error) { alert("error:" + error); } } //Call the asynchronous xhrGet var deferred = dojo.xhrGet(xhrArgs); } </script> <img src="go.gif" onclick="doSelectBatchsAfterDate();"/>

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• Read binary file into a struct C#

  - by Robert Höglund

  I'm trying to read binary data using C#. I have all information about the layout of the data in the files I want to read. I'm able to read the data "chunk by chunk", i.e. getting the first 40 bytes of data converting it to a string, get the next 40 bytes, ... Since there are at least three slighlty different version of the data, I would like to read the data directly into a struct. It just feels so much more right than by reading it "line by line". I have tried the following approach but to no avail:StructType aStruct; int count = Marshal.SizeOf(typeof(StructType)); byte[] readBuffer = new byte[count]; BinaryReader reader = new BinaryReader(stream); readBuffer = reader.ReadBytes(count); GCHandle handle = GCHandle.Alloc(readBuffer, GCHandleType.Pinned); aStruct = (StructType) Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(StructType)); handle.Free(); The stream is an opened FileStream from which I have began to read from. I get an AccessViolationException when using Marshal.PtrToStructure. The stream contains more information than I'm trying to read since I'm not interested in data at the end of the file. The struct is defined like:[StructLayout(LayoutKind.Explicit)] struct StructType { [FieldOffset(0)] public string FileDate; [FieldOffset(8)] public string FileTime; [FieldOffset(16)] public int Id1; [FieldOffset(20)] public string Id2; } The examples code is changed from original to make this question shorter. How would I read binary data from a file into a struct?

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