Search Results

Search found 5274 results on 211 pages for 'stream operators'.

Page 64/211 | < Previous Page | 60 61 62 63 64 65 66 67 68 69 70 71  | Next Page >

  • Nesting Linq-to-Objects query within Linq-to-Entities query –what is happening under the covers?

    - by carewithl
    var numbers = new int[] { 1, 2, 3, 4, 5 }; var contacts = from c in context.Contacts where c.ContactID == numbers.Max() | c.ContactID == numbers.FirstOrDefault() select c; foreach (var item in contacts) Console.WriteLine(item.ContactID); Linq-to-Entities query is first translated into Linq expression tree, which is then converted by Object Services into command tree. And if Linq-to-Entities query nests Linq-to-Objects query, then this nested query also gets translated into an expression tree. a) I assume none of the operators of the nested Linq-to-Objects query actually get executed, but instead data provider for particular DB (or perhaps Object Services) knows how to transform the logic of Linq-to-Objects operators into appropriate SQL statements? b) Data provider knows how to create equivalent SQL statements only for some of the Linq-to-Objects operators? c) Similarly, data provider knows how to create equivalent SQL statements only for some of the non-Linq methods in the Net Framework class library? EDIT: I know only some Sql so I can't be completely sure, but reading Sql query generated for the above code it seems data provider didn't actually execute numbers.Max method, but instead just somehow figured out that numbers.Max should return the maximum value and then proceed to include in generated Sql query a call to TSQL's build-in MAX function. It also put all the values held by numbers array into a Sql query. SELECT CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN '0X0X' ELSE '0X1X' END AS [C1], [Extent1].[ContactID] AS [ContactID], [Extent1].[FirstName] AS [FirstName], [Extent1].[LastName] AS [LastName], [Extent1].[Title] AS [Title], [Extent1].[AddDate] AS [AddDate], [Extent1].[ModifiedDate] AS [ModifiedDate], [Extent1].[RowVersion] AS [RowVersion], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[CustomerTypeID] END AS [C2], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[InitialDate] END AS [C3], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[PrimaryDesintation] END AS [C4], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[SecondaryDestination] END AS [C5], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[PrimaryActivity] END AS [C6], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[SecondaryActivity] END AS [C7], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[Notes] END AS [C8], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[RowVersion] END AS [C9], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[BirthDate] END AS [C10], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[HeightInches] END AS [C11], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[WeightPounds] END AS [C12], CASE WHEN (([Project1].[C1] = 1) AND ([Project1].[C1] IS NOT NULL)) THEN [Project1].[DietaryRestrictions] END AS [C13] FROM [dbo].[Contact] AS [Extent1] LEFT OUTER JOIN (SELECT [Extent2].[ContactID] AS [ContactID], [Extent2].[BirthDate] AS [BirthDate], [Extent2].[HeightInches] AS [HeightInches], [Extent2].[WeightPounds] AS [WeightPounds], [Extent2].[DietaryRestrictions] AS [DietaryRestrictions], [Extent3].[CustomerTypeID] AS [CustomerTypeID], [Extent3].[InitialDate] AS [InitialDate], [Extent3].[PrimaryDesintation] AS [PrimaryDesintation], [Extent3].[SecondaryDestination] AS [SecondaryDestination], [Extent3].[PrimaryActivity] AS [PrimaryActivity], [Extent3].[SecondaryActivity] AS [SecondaryActivity], [Extent3].[Notes] AS [Notes], [Extent3].[RowVersion] AS [RowVersion], cast(1 as bit) AS [C1] FROM [dbo].[ContactPersonalInfo] AS [Extent2] INNER JOIN [dbo].[Customers] AS [Extent3] ON [Extent2].[ContactID] = [Extent3].[ContactID]) AS [Project1] ON [Extent1].[ContactID] = [Project1].[ContactID] LEFT OUTER JOIN (SELECT TOP (1) [c].[C1] AS [C1] FROM (SELECT [UnionAll3].[C1] AS [C1] FROM (SELECT [UnionAll2].[C1] AS [C1] FROM (SELECT [UnionAll1].[C1] AS [C1] FROM (SELECT 1 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable1] UNION ALL SELECT 2 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable2]) AS [UnionAll1] UNION ALL SELECT 3 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable3]) AS [UnionAll2] UNION ALL SELECT 4 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable4]) AS [UnionAll3] UNION ALL SELECT 5 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable5]) AS [c]) AS [Limit1] ON 1 = 1 LEFT OUTER JOIN (SELECT TOP (1) [c].[C1] AS [C1] FROM (SELECT [UnionAll7].[C1] AS [C1] FROM (SELECT [UnionAll6].[C1] AS [C1] FROM (SELECT [UnionAll5].[C1] AS [C1] FROM (SELECT 1 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable6] UNION ALL SELECT 2 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable7]) AS [UnionAll5] UNION ALL SELECT 3 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable8]) AS [UnionAll6] UNION ALL SELECT 4 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable9]) AS [UnionAll7] UNION ALL SELECT 5 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable10]) AS [c]) AS [Limit2] ON 1 = 1 CROSS JOIN (SELECT MAX([UnionAll12].[C1]) AS [A1] FROM (SELECT [UnionAll11].[C1] AS [C1] FROM (SELECT [UnionAll10].[C1] AS [C1] FROM (SELECT [UnionAll9].[C1] AS [C1] FROM (SELECT 1 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable11] UNION ALL SELECT 2 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable12]) AS [UnionAll9] UNION ALL SELECT 3 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable13]) AS [UnionAll10] UNION ALL SELECT 4 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable14]) AS [UnionAll11] UNION ALL SELECT 5 AS [C1] FROM (SELECT 1 AS X) AS [SingleRowTable15]) AS [UnionAll12]) AS [GroupBy1] WHERE [Extent1].[ContactID] IN ([GroupBy1].[A1], (CASE WHEN ([Limit1].[C1] IS NULL) THEN 0 ELSE [Limit2].[C1] END)) Based on this, is it possible that Linq2Entities provider indeed doesn't execute non-Linq and Linq-to-Object methods, but instead creates equivalent SQL statements for some of them ( and for others it throws an exception )? Thank you in advance

    Read the article

  • nginx php5-fpm "File not found" -- FastCGI sent in stderr: "Primary script unknown"

    - by jmfayard
    so I'm trying to run for the first time the nginx web server with php5-fpm on a debian wheezy server Hitting a php file display simply File not found I have done my research (waste a lot of hours actually ;), there are a lot of people that have similar problems, yet I didn't succeed to correct it with what worked for them. I still have the same error : $ tail /var/log/nginx/access.log /var/log/nginx/error.log /var/log/php5-fpm.log | less == /var/log/nginx/error.log <== 2013/10/26 21:36:00 [error] 6900#0: *1971 FastCGI sent in stderr: "Primary script unknown" while reading response header from upstream, I have tried a lot of things, it's hard to remember what. I have put my config files on github my /etc/nginx/nginx.conf my /etc/php5/fpm/php-fpm.conf Currently, the nginx.conf configuration uses this... server { server_name mydomain.tld; root /srv/data1/test; location ~ \.php$ { try_files $uri =404; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } } /etc/php5/fpm/pool.d/www.conf contains listen = 127.0.0.1:9000 I have tried the unix socket version, same thing. fastcgi_pass unix:/var/run/php5-fpm.sock; I made sure the server is started $ netstat -alnp | grep LISTEN tcp 0 0 127.0.0.1:9000 0.0.0.0:* LISTEN 6913/php-fpm.conf) tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 4785/mysqld tcp 0 0 0.0.0.0:842 0.0.0.0:* LISTEN 2286/inetd tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN 2812/rpcbind tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 5710/nginx tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 2560/sshd tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN 5710/nginx tcp6 0 0 :::111 :::* LISTEN 2812/rpcbind unix 2 [ ACC ] STREAM LISTENING 323648 6574/tmux /tmp//tmux-1000/default unix 2 [ ACC ] STREAM LISTENING 619072 6790/fcgiwrap /var/run/fcgiwrap.socket unix 2 [ ACC ] SEQPACKET LISTENING 323 464/udevd /run/udev/control unix 2 [ ACC ] STREAM LISTENING 610686 2812/rpcbind /var/run/rpcbind.sock unix 2 [ ACC ] STREAM LISTENING 318633 4785/mysqld /var/run/mysqld/mysqld.sock Each time I modify the nginx.conf file, I make sure to relaunch this command nginx -t && nginx -s reload && echo "nginx configuration reloaded" and same thing for php5-fpm /etc/init.d/php5-fpm restart Thanks for your help :-)

    Read the article

  • Cygwin rsync broken

    - by kefeizhou
    I get an error with cygwin rsync trying to transfer files between local - remote host. Any ideas? C:\>rsync user@host:~/file newfile Password: rsync: connection unexpectedly closed (0 bytes received so far) [sender] rsync error: error in rsync protocol data stream (code 12) at io.c(601) [sender= 3.0.7] rsync: connection unexpectedly closed (0 bytes received so far) [receiver] rsync error: error in rsync protocol data stream (code 12) at /home/lapo/packagi ng/rsync-3.0.6-1/src/rsync-3.0.6/io.c(600) [receiver=3.0.6]

    Read the article

  • webcam streaming on mobile phone

    - by adam
    hey guys im stuck on a project i have i need to find a way to stream my home webcam onto my mobile phone, in this case on a blackberry bold 9700, also i have an i pod touch 2.0. the problem i keep coming across is that every program i find askes for money, i am looking for a way to do this for free, ive been trying using vlc but have so far been unable to get the stream to work, any help would be great thanks a lot adam

    Read the article

  • How to create a RTMP server on linux (Gentoo)

    - by user221359
    I am trying to create a RTMP server to stream video files from my Linux server to the internet/network. I have been able to successfully use ffmpeg to stream to other RTMP servers like youtube, but how do I go about hosting my own on my RTMP server locally? I have tried looking into ffserver, but is this what I need to create a local RTMP server? If so could someone give me basic syntax or examples to get it working? Thanks for any information.

    Read the article

  • TV Playout software for Windows Server without DirectX?

    - by Joel Kennedy
    I am trying to find a TV Playout software (video mixer) for Windows Server 2003/2008 which can stream via rtmp to Justin.tv without the need for DirectX. The reason for this is that the server which would run the TV Playout software is hosted/virtualized via an ESXi server, and does not have DirectX support. Even if there was software that could just stream a playlist of video files to Justin.tv that would be a start. Thanks

    Read the article

  • Subtitle program for DVD on Mac

    - by nocturnal
    I like the looks of Belle Nuit Subtitler, even though the price is a bit high. Does anyone know any other program like it that can add subtitles to a video stream while watching the stream itself? I want this to translate DVD's, in case that matters. I'm willing to purchase it if the program can deliver what i need but would like to see alternatives to Belle Nuit.

    Read the article

  • How to record screen and sound

    - by user23950
    Do you know of any application that can record both sound and the screen. Camstudio records only the screen but not the sound. Coming out from the monitor. How do I do this one, because I frequently stream online content. So that I'll just record it and I will have a copy of that stream

    Read the article

  • ffmpeg video4linux2 at specified resolution

    - by wim
    When I'm trying to record a clip from my webcam, using: ffmpeg -f video4linux2 -s 640x480 -i /dev/video0 /tmp/spam.avi I get annoying problem with very low resolution video, and there is a message from ffmpeg saying: [video4linux2,v4l2 @ 0x2bff3e0] The V4L2 driver changed the video from 800x600 to 176x144 I have tried not specifying -s, or trying other sizes like 800x600, and always it forces me back to 176x144. Why is this and how can I prevent it? My webcam is one of those Logitech 9000 Pro, I know it supports better resolutions than this and I can see with v4l2-ctl --list-formats-ext that it goes up to at least 800x600. edit: complete console output follows wim@wim-desktop:~$ ffmpeg -f video4linux2 -s 640x480 -i /dev/video0 /tmp/spam.avi ffmpeg version git-2012-11-20-70c0f13 Copyright (c) 2000-2012 the FFmpeg developers built on Nov 21 2012 00:09:36 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --enable-gpl --enable-libfaac --enable-libfdk-aac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-x11grab --enable-libx264 --enable-nonfree --enable-version3 libavutil 52. 8.100 / 52. 8.100 libavcodec 54. 73.100 / 54. 73.100 libavformat 54. 37.100 / 54. 37.100 libavdevice 54. 3.100 / 54. 3.100 libavfilter 3. 23.101 / 3. 23.101 libswscale 2. 1.102 / 2. 1.102 libswresample 0. 17.100 / 0. 17.100 libpostproc 52. 2.100 / 52. 2.100 [video4linux2,v4l2 @ 0x37a33e0] The V4L2 driver changed the video from 640x480 to 176x144 [video4linux2,v4l2 @ 0x37a33e0] Estimating duration from bitrate, this may be inaccurate Input #0, video4linux2,v4l2, from '/dev/video0': Duration: N/A, start: 37066.740548, bitrate: 6082 kb/s Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 176x144, 6082 kb/s, 15 tbr, 1000k tbn, 15 tbc File '/tmp/spam.avi' already exists. Overwrite ? [y/N] y Output #0, avi, to '/tmp/spam.avi': Metadata: ISFT : Lavf54.37.100 Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 176x144, q=2-31, 200 kb/s, 15 tbn, 15 tbc Stream mapping: Stream #0:0 -> #0:0 (rawvideo -> mpeg4) Press [q] to stop, [?] for help frame= 95 fps= 22 q=2.0 Lsize= 88kB time=00:00:13.86 bitrate= 51.8kbits/s video:77kB audio:0kB subtitle:0 global headers:0kB muxing overhead 13.553706%

    Read the article

  • Setting font size of Closed Captions on iPhone using ffmpeg or mencoder

    - by forthrin
    Does anyone know how to either: Make ffmpeg set subtitle font size in the output video file Make mencoder produce an iPhone-compatible video file (with subtitles) I finally found out how to get Closed Captions video on iPhone, with mkv and srt files as source material. The secret was using the mov_text subtitle codec in ffmpeg (and turning on Closed Captions in the iPhone settings of course): ffmpeg -y -i in.mkv -i in.srt -map 0:0 -map 0:1 -map 1:0 -vcodec copy -acodec aac -ab 256k -scodec mov_text -strict -2 -metadata title="Title" -metadata:s:s:0 language=eng out.mp4 However, the font size appears very small on the iPhone, and I can't find out how to set it with ffmpeg (the iPhone has no option for this). I found out that mencoder has a -subfont-text-scale option, but I don't have a lot of experience with this program. The following, my best attempt so far, produces an output file which is not playable on the iPhone. sudo port install mplayer +mencoder_extras +osd mencoder in.mkv -sub in.srt -o out.mp4 -ovc copy -oac faac -faacopts br=256:mpeg=4:object=2 -channels 2 -srate 48000 -subfont-text-scale 10 -of lavf -lavfopts format=mp4 PS! As requested, here is the output from mencoder: 192 audio & 400 video codecs success: format: 0 data: 0x0 - 0xb64b9d2f libavformat version 54.6.101 (internal) libavformat file format detected. [matroska,webm @ 0x1015c9a50]Unknown entry 0x80 [lavf] stream 0: video (h264), -vid 0 [lavf] stream 1: audio (ac3), -aid 0, -alang eng VIDEO: [H264] 1280x544 0bpp 49.894 fps 0.0 kbps ( 0.0 kbyte/s) [V] filefmt:44 fourcc:0x34363248 size:1280x544 fps:49.894 ftime:=0.0200 ========================================================================== Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders libavcodec version 54.23.100 (internal) AUDIO: 48000 Hz, 2 ch, s16le, 448.0 kbit/29.17% (ratio: 56000->192000) Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3) ========================================================================== ** MUXER_LAVF ***************************************************************** REMEMBER: MEncoder's libavformat muxing is presently broken and can generate INCORRECT files in the presence of B-frames. Moreover, due to bugs MPlayer will play these INCORRECT files as if nothing were wrong! ******************************************************************************* OK, exit. videocodec: framecopy (1280x544 0bpp fourcc=34363248) VIDEO CODEC ID: 28 AUDIO CODEC ID: 15002, TAG: 0 Writing header... [mp4 @ 0x1015c9a50]Codec for stream 0 does not use global headers but container format requires global headers [mp4 @ 0x1015c9a50]Codec for stream 1 does not use global headers but container format requires global headers Then the following repeats itself for every frame: Pos: 0.0s 1f ( 2%) 0.00fps Trem: 0min 0mb A-V:0.000 [0:0] [mp4 @ 0x1015c9a50]malformated aac bitstream, use -absf aac_adtstoasc Error while writing frame. I recognize -absf aac_adtstoasc as an ffmpeg option (does mencoder spawn ffmpeg?), but I don't know how to pass this option on (my hunch is this is not even the origin of the problem).

    Read the article

  • variable bitrate streaming under linux

    - by ufk
    Hi. i know that in Linux i can stream using vlc and ffmpeg. i was able to successfully stream using vlc but only in static bitrates. i must set 400k/s or 800k/s. i want it to use as much upload bandwidth as it can consume. so if my internet line is not busy and i'm not downloading anything the quality will be better. is it possible to do such a thing?

    Read the article

  • Streaming audio from microphone to network

    - by Janusz
    I have the following problem: I want to stream the audio I record with one machine to another machine in the same network. It seems that vlc is the best shot at the moment. I was able to stream a music file via vlc but streaming the audio from the microphone the same doesn't work. EDIT If I enable play locally the captured sound is played. Even streaming to another instance of VLC on the same machine doesn't work.

    Read the article

  • TCP Proxy with multiple clients?

    - by Daphna
    I am looking for a TCP proxy - a utility that will connect to a port, read a TCP stream, and write it to clients that connect to it. The key point here is that there may be more than one client, and each client should receive a copy of the stream. Preferably windows solution, but Linux can be useful as well.

    Read the article

  • Recover not properly burned DVD from camcoder

    - by tomo
    Can anybody suggest me any good and preferably free software - working on Vista / 7 - for recovering content from DVD disks? A few DVD-R VOB files cannot be read from disk by Windows. Probably the camera failed to burn it correctly. What I want to achieve is to skip a few invalid frames in VOB files and recreate proper MPEG stream - without re-encoding whole stream and loosing the quality.

    Read the article

  • Streaming from a second computer

    - by techgod52
    I play games on my laptop, and they run at about 30-45 fps, which is bearable for me. But when I try to stream, the frame rate drops to 20 or lower, which is unplayable for me. I have a second computer though (a Mac, the laptop is Win7), and I'm wondering if there is anyway to stream the game content (onto Twitch.tv) from my laptop using my Mac. Is this possible, and how would I go about doing it?

    Read the article

  • Streaming Audio over UDP to Android

    - by Mr. Pig
    Is it possible to have Android (perhaps via MediaPlayer or a different existing class) accept media streams over UDP? I've successfully had MediaPlayer connect to an HTTP stream (as well as static files hosted on an HTTP server) but I'm wondering how one would go about accepting a stream from a UDP source. I've seen this and suppose a solution similar to that (where I download the stream via an independent UDP socket and then move the data to a MemoryBuffer that I then pass to MediaPlayer) is an option but I'm curious if a method already exists in the SDK, and if it does not, what other options do I have? Thanks

    Read the article

  • How to convert CFDataRef data to UIImage / NSData - Iphone

    - by sagar
    Hello ! every one. I am having a little query regarding CFData in Objective C / iPhone Development. See, Apple documentation has following method for CGPDFStream CGPDFStreamCopyData(<#CGPDFStreamRef stream#>, <#CGPDFDataFormat *format#>) Above method return type is CGDataRef. I have data as stream. Now I wish to convert in image. & For that I think I should follow this way. CGPDFDataFormat t=CGPDFDataFormatJPEG2000; CFDataRef data = CGPDFStreamCopyData (stream, &t); After executing above statements - I have some reference in data variable. Now my Query is - How to convert this CFData to NSData or UIImage ? I have gone through the documentation of apple - But I am failure to find it. Thanks in advance for sharing your knowledge. Sagar

    Read the article

  • Using AES encryption in .NET - CryptographicException saying the padding is invalid and cannot be removed

    - by Jake Petroules
    I wrote some AES encryption code in C# and I am having trouble getting it to encrypt and decrypt properly. If I enter "test" as the passphrase and "This data must be kept secret from everyone!" I receive the following exception: System.Security.Cryptography.CryptographicException: Padding is invalid and cannot be removed. at System.Security.Cryptography.RijndaelManagedTransform.DecryptData(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount, Byte[]& outputBuffer, Int32 outputOffset, PaddingMode paddingMode, Boolean fLast) at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock(Byte[] inputBuffer, Int32 inputOffset, Int32 inputCount) at System.Security.Cryptography.CryptoStream.FlushFinalBlock() at System.Security.Cryptography.CryptoStream.Dispose(Boolean disposing) at System.IO.Stream.Close() at System.IO.Stream.Dispose() ... And if I enter something less than 16 characters I get no output. I believe I need some special handling in the encryption since AES is a block cipher, but I'm not sure exactly what that is, and I wasn't able to find any examples on the web showing how. Here is my code: using System; using System.IO; using System.Security.Cryptography; using System.Text; public static class DatabaseCrypto { public static EncryptedData Encrypt(string password, string data) { return DatabaseCrypto.Transform(true, password, data, null, null) as EncryptedData; } public static string Decrypt(string password, EncryptedData data) { return DatabaseCrypto.Transform(false, password, data.DataString, data.SaltString, data.MACString) as string; } private static object Transform(bool encrypt, string password, string data, string saltString, string macString) { using (AesManaged aes = new AesManaged()) { aes.Mode = CipherMode.CBC; aes.Padding = PaddingMode.PKCS7; int key_len = aes.KeySize / 8; int iv_len = aes.BlockSize / 8; const int salt_size = 8; const int iterations = 8192; byte[] salt = encrypt ? new Rfc2898DeriveBytes(string.Empty, salt_size).Salt : Convert.FromBase64String(saltString); byte[] bc_key = new Rfc2898DeriveBytes("BLK" + password, salt, iterations).GetBytes(key_len); byte[] iv = new Rfc2898DeriveBytes("IV" + password, salt, iterations).GetBytes(iv_len); byte[] mac_key = new Rfc2898DeriveBytes("MAC" + password, salt, iterations).GetBytes(16); aes.Key = bc_key; aes.IV = iv; byte[] rawData = encrypt ? Encoding.UTF8.GetBytes(data) : Convert.FromBase64String(data); using (ICryptoTransform transform = encrypt ? aes.CreateEncryptor() : aes.CreateDecryptor()) using (MemoryStream memoryStream = encrypt ? new MemoryStream() : new MemoryStream(rawData)) using (CryptoStream cryptoStream = new CryptoStream(memoryStream, transform, encrypt ? CryptoStreamMode.Write : CryptoStreamMode.Read)) { if (encrypt) { cryptoStream.Write(rawData, 0, rawData.Length); return new EncryptedData(salt, mac_key, memoryStream.ToArray()); } else { byte[] originalData = new byte[rawData.Length]; int count = cryptoStream.Read(originalData, 0, originalData.Length); return Encoding.UTF8.GetString(originalData, 0, count); } } } } } public class EncryptedData { public EncryptedData() { } public EncryptedData(byte[] salt, byte[] mac, byte[] data) { this.Salt = salt; this.MAC = mac; this.Data = data; } public EncryptedData(string salt, string mac, string data) { this.SaltString = salt; this.MACString = mac; this.DataString = data; } public byte[] Salt { get; set; } public string SaltString { get { return Convert.ToBase64String(this.Salt); } set { this.Salt = Convert.FromBase64String(value); } } public byte[] MAC { get; set; } public string MACString { get { return Convert.ToBase64String(this.MAC); } set { this.MAC = Convert.FromBase64String(value); } } public byte[] Data { get; set; } public string DataString { get { return Convert.ToBase64String(this.Data); } set { this.Data = Convert.FromBase64String(value); } } } static void ReadTest() { Console.WriteLine("Enter password: "); string password = Console.ReadLine(); using (StreamReader reader = new StreamReader("aes.cs.txt")) { EncryptedData enc = new EncryptedData(); enc.SaltString = reader.ReadLine(); enc.MACString = reader.ReadLine(); enc.DataString = reader.ReadLine(); Console.WriteLine("The decrypted data was: " + DatabaseCrypto.Decrypt(password, enc)); } } static void WriteTest() { Console.WriteLine("Enter data: "); string data = Console.ReadLine(); Console.WriteLine("Enter password: "); string password = Console.ReadLine(); EncryptedData enc = DatabaseCrypto.Encrypt(password, data); using (StreamWriter stream = new StreamWriter("aes.cs.txt")) { stream.WriteLine(enc.SaltString); stream.WriteLine(enc.MACString); stream.WriteLine(enc.DataString); Console.WriteLine("The encrypted data was: " + enc.DataString); } }

    Read the article

  • StAX - Setting the version and encoding using XMLStreamWriter

    - by Anurag
    Hi, I am using StAX for creating XML files and then validating the file with and XSD. I am getting an error while creating the XML file: javax.xml.stream.XMLStreamException: Underlying stream encoding 'Cp1252' and input paramter for writeStartDocument() method 'UTF-8' do not match. at com.sun.xml.internal.stream.writers.XMLStreamWriterImpl.writeStartDocument(XMLStreamWriterImpl.java:1182) Here is the code snippet: XMLOutputFactory xof = XMLOutputFactory.newInstance(); try{ XMLStreamWriter xtw = xof.createXMLStreamWriter(new FileWriter(fileName)); xtw.writeStartDocument("UTF-8","1.0");} catch(XMLStreamException e) { e.printStackTrace(); } catch(IOException ie) { ie.printStackTrace(); } I am running this code on unix. Does anybody know how to set the version and encoding style.

    Read the article

  • IOException reading a large file from a UNC path into a byte array using .NET

    - by Matt
    I am using the following code to attempt to read a large file (280Mb) into a byte array from a UNC path public void ReadWholeArray(string fileName, byte[] data) { int offset = 0; int remaining = data.Length; log.Debug("ReadWholeArray"); FileStream stream = new FileStream(fileName, FileMode.Open, FileAccess.Read); while (remaining > 0) { int read = stream.Read(data, offset, remaining); if (read <= 0) throw new EndOfStreamException (String.Format("End of stream reached with {0} bytes left to read", remaining)); remaining -= read; offset += read; } } This is blowing up with the following error. System.IO.IOException: Insufficient system resources exist to complete the requested If I run this using a local path it works fine, in my test case the UNC path is actually pointing to the local box. Any thoughts what is going on here ?

    Read the article

  • C#: How to set AsyncWaitHandle in Compact Framework?

    - by Thorsten Dittmar
    Hi, I'm using a TcpClient in one of my Compact Framework 2.0 applications. I want to receive some information from a TCP server. As the Compact Framework does not support the timeout mechanisms of the "large" framework, I'm trying to implement my own timeout-thing. Basically, I want to do the following: IAsyncResult result = client.BeginRead(buffer, 0, size, ..., stream); if (!result.AsyncWaitHandle.WaitOne(5000, false)) // Handle timeout private void ReceiveFinished(IAsyncResult ar) { NetworkStream stream = (NetworkStream)ar.AsyncState; int numBytes = stream.EndRead(ar); // SIGNAL IASYNCRESULT.ASYNCWAITHANDLE HERE ... HOW?? } I'd like to call Set for the IAsyncResult.AsyncWaitHandle, but it doesn't have such a method and I don't know which implementation to cast it to. How do I set the wait handle? Or is it automatically set by calling EndRead? The documentation suggests that I'd have to call Set myself... Thanks for any help!

    Read the article

  • HTTP Headers for Unknown Content-Length

    - by jocull
    I am currently trying to stream content out to the web after a trans-coding process. This usually works fine by writing binary out to my web stream, but some browsers (specifically IE7, IE8) do not like not having the Content-Length defined in the HTTP header. I believe that "valid" headers are supposed to have this set. What is the proper way to stream content to the web when you have an unknown Content-Length? The trans-coding process can take awhile, so I want to start streaming it out as it completes.

    Read the article

  • Figuring out the required MaxReceivedMessageSize in WCF with NetTcpBinding

    - by Flo
    I'm using NetTcpBinding in WCF and i want to send a Stream which does not exceed the size of 1 MB. I have set the MaxReceivedMessageSize to a really high number and that works fine of course. But I am curious: Does setting the MaxReceivedMessageSize to a very hight number have any (negative) impact or would it be useful to set it just above the size I actually want to send/receive? What kind of overhead can I expect when using the NetTcpBinding to transfer a stream? Meaning: when I send a stream of 1 MB, how large does my MaxReceivedMessageSize has to be?

    Read the article

< Previous Page | 60 61 62 63 64 65 66 67 68 69 70 71  | Next Page >