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• AIR for Android, Flash iphone packager, Playbook support for streaming camera and choosing camera

  - by mswallace

  I am wondering if anyone can definitively tell me if Flash / AIR can find all these mobile devices front facing camera and use RTMP to stream the video captured ? I would like to create a video conferencing app for these devices. Of course none of them support testing this in the simulators and I don't have the funds to purchase or access all of them that I would like to test. Wondering if anyone can shed some light on this for me. I have seen some posts where they have done this for android but not sure about support for finding a list of cameras, choosing one and streaming from iphone 4 and playbook. thanks for any help on this.

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• Same-directory includes failing on a Fedora server with PHP.

  - by JimmySawczuk

  I have a couple files that look like this: index.php: <?php include('includes/header.php'); ... includes/header.php: <?php include('config.php'); ... The error I get is Warning: require(config.php) [function.require]: failed to open stream: No such file or directory in [dir]/includes/header.php on line 2 Fatal error: require() [function.require]: Failed opening required 'config.php' (include_path='.:/usr/share/pear:/usr/share/php') in [dir]/includes/header.php on line 2 I did some further debugging: when I add the call system('pwd'); to includes/header.php, it shows [dir], where it should say [dir]/includes. Adding the 'includes/' to the include path works, but isn't desirable because that would fail on the production server. The above code works on a production server, and worked fine on my development Fedora server, until I tried to change my development environment so that the Fedora server's document root is a mounted CIFS share. Any ideas? Thanks.

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• In the JSON spec, what does "Since the first two characters of a JSON text will always be ASCII characters" mean?

  - by dan gibson

  The spec is http://www.ietf.org/rfc/rfc4627.txt?number=4627 It contains this: Encoding JSON text SHALL be encoded in Unicode. The default encoding is UTF-8. Since the first two characters of a JSON text will always be ASCII characters [RFC0020], it is possible to determine whether an octet stream is UTF-8, UTF-16 (BE or LE), or UTF-32 (BE or LE) by looking at the pattern of nulls in the first four octets. What does it mean "Since the first two characters of a JSON text will always be ASCII characters [RFC0020]"? I've looked at RFC0020 but couldn't find anything about it. JSON could be {" or { " (ie whitespace before the quote.

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• Facebook login on headless browser

  - by dmni

  My Facebook app has a function of automating tasks on server side headless browser (like visiting app links). Now, I use the Facebook SDKs to log user in and access user's news stream to search for links and other information. Once the app has found all the links, it is supposed to pass this information in to the headless browser which will then proceed to visit in them for example. The problem is that these headless browser windows' are not logged in. I would like the headless browser to be temporary logged in as the user launching the tasks from the app. Is this possible?

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• Swing code in sockets

  - by asb

  I am learning swings for making GUI. I was thinking which is the best possible way in case of socket with swings. 1. The whole swing code goes in the server file. All the handlers and logic in on server side. Client only create socket. 2. The server have logic part. The code for the swing to display interface goes on client side. Client Creates stream to send / rec. data from server. Whch is the good way out of 2 ?

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• Naive question about implementing RSS

  - by interstar

  I have a naive question about RSS feeds. I have a series of timed events which appear on my site and that I make available as an RSS feed for other applications to import. Who is typically responsible for truncating this feed? Over the next year, I can see my feed having thousands of items. Should the URL mysite.com/rss always return all items? And leave it to the readers to just show the most recent? Or is it more customary that I only return, say, the top 50? Expecting the readers to cache older items? (And, if so, is there a convention for readers to ask the server for the "next page")? What is the typical behaviour of something like FriendFeed when it pulls in an RSS stream?

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• Resolving Assemblies, the fuzzy way

  - by David Rutten

  Here's the setup: A pure DotNET class library is loaded by an unmanaged desktop application. The Class Library acts as a plugin. This plugin loads little baby plugins of its own (all DotNET Class Libraries), and it does so by reading the dll into memory as a byte-stream, then Assembly asm = Assembly.Load(COFF_Image); The problem arises when those little baby plugins have references to other dlls. Since they are loaded via the memory rather than directly from the disk, the framework often cannot find these referenced assemblies and is thus incapable of loading them. I can add an AssemblyResolver handler to my project and I can see these referenced assemblies drop past. I have a reasonably good idea about where to find these referenced assemblies on the disk, but how can I make sure that the Assmebly I load is the correct one? In short, how do I reliably go from the System.ResolveEventArgs.Name field to a dll file path, presuming I have a list of all the folders where this dll could be hiding)?

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• Azure Blobs - ArgumentNullException when calling UploadFile()

  - by Ariel

  I’m getting the following exception when trying to upload a file with the following code: string encodedUrl = "videos/Sample.mp4" CloudBlockBlob encodedVideoBlob = blobClient.GetBlockBlobReference(encodedUrl); Log(string.Format("Got blob reference for {0}", encodedUrl), EventLogEntryType.Information); encodedVideoBlob.Properties.ContentType = contentType; encodedVideoBlob.Metadata[BlobProperty.Description] = description; encodedVideoBlob.UploadFile(localEncodedBlobPath); I see the "Got blob reference" message, so I assume the reference resolves correctly. Void Run() C:\Inter\Projects\PoC\WorkerRole\WorkerRole.cs (40) System.ArgumentNullException: Value cannot be null. Parameter name: value at Microsoft.WindowsAzure.StorageClient.Tasks.Task`1.get_Result() at Microsoft.WindowsAzure.StorageClient.Tasks.Task`1.ExecuteAndWait() at Microsoft.WindowsAzure.StorageClient.CloudBlob.UploadFromStream(Stream source, BlobRequestOptions options) at Microsoft.WindowsAzure.StorageClient.CloudBlob.UploadFile(String fileName, BlobRequestOptions options) at EncoderWorkerRole.WorkerRole.ProcessJobOutput(IJob job, String videoBlobToEncodeUrl) in C:\Inter\Projects\PoC\WorkerRole\WorkerRole.cs:line 144 at EncoderWorkerRole.WorkerRole.Run() in C:\Inter\Projects\PoC\WorkerRole\WorkerRole.cs:line 40 Interestingly, I'm running that same snippet from an on-premises server i.e., outside of Azure and it works correctly. Ideas welcome, thanks!

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• Using .dll methods to load data from file in C# code

  - by Espinas.iss

  I want to use in C# these methods: * int LibRaw::open_datastream(LibRaw_abstract_datastream *stream) * int LibRaw::open_file(const char *rawfile) * int LibRaw::open_buffer(void *buffer, size_t bufsize) * int LibRaw::unpack(void) * int LibRaw::unpack_thumb(void) that are stored in a libraw.dll. These functions one by one load data from file... I've been reading about P/Invoke but i'm not sure how to invoke them. Can anyone show me an example how to use all of these functions together in C# to load file (raw image stored in folder) or just how to PIvoke one of them. Thanx!

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• Open zip file without temporary files

  - by Javis Perez

  i've seem this post about extracting a zip without a temporary file via stream and pipes: Open a file from archive without temporary extraction The problem is that i'm using php and have no idea if that is possible. I've search a lot with no luck. My idea is to preview zip files from the dropbox using its API but i dont want to save the files to a local drive, just preview the content. Any idea if that's possible with php? Almost everything i found is about creating the file, not reading it... :-\ I was thinking that i might try with nodejs, but i know mostly nothing about nodejs, do you think it would support it? Any other idea please? thank you.

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• Monitoring an audio line.

  - by Stefan Liebenberg

  I need to monitor my audio line-in in linux, and in the event that audio is played, the sound must be recorded and saved to a file. Similiar to how motion monitors the video feed. Is it possible to do this with bash? something along the lines of: #!/bin/bash # audio device device=/dev/audio-line-in # below this threshold audio will not be recorded. noise_threshold=10 # folder where recordings are stored storage_folder=~/recordings # run indefenitly, until Ctrl-C is pressed while true; do # noise_level() represents a function to determine # the noise level from device if noise_level( $device ) > $noise_threshold; then # stream from device to file, can be encoded to mp3 later. cat $device > $storage_folder/`date`.raw fi; done;

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• Calculating intraday candlesticks by time intervals

  - by Sam

  This maybe an over asked question, but my mind draws blank at this moment. I know what a candlestick chart is and how to draw it daily. But how to draw it intraday at asked time periods. I have this server, written in Java, that gives me trade depth (each trade done since the start of the day). Its just a stream of raw data: price, shares, timestamp. How does one go about calculating candlestick data from that? Lets say, they want to have 5 min candlestick or 1min candlestick. Or is there a library that will do that for me if I feed it data? Any help is appreciated!

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• How do I create Ntlm Type 1 and Type 3 messages in .Net

  - by brj011

  I need to create Type 1 message and Type 3 message for NTLM handshaking. Is there any .Net API for this? Essentially, the application is WPF based, but Socket is used in order to stream data from the server. Use of socket is a technical requirement, but the problem is when user needs to connect to the server using a proxy server. Further, if the proxy authorization is based on Ntlm, the client application needs to create Type 1 and Type 3 messages in order to handshake with the proxy server. My question is: Is there any API already available in .NET libraries that can be consumed in order to create these different types of NTLM messages? Any help or alternatives will be greatly appreciated. Thanks in advance.

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• Ruby on Rails: restrict file type with Paperclip using a flash uploader

  - by aperture

  I have a pretty basic Paperclip Upload model that is attached to a User model through has_many, and am using Uploadify to do the actual uploading. Flash sends all files with the content type of "application/octet-stream" so using validates_attachment_content_type rejects all files. In my create action, I am able to get the mime-type from the original file name, but only after it's been saved, with: def coerce(params) h = Hash.new h[:upload] = Hash.new h[:upload][:attachment].content_type = MIME::Types.type_for(h[:upload][:attachment].original_filename).to_s ... end and def create diff_params = coerce(params) @upload = Upload.new(diff_params[:upload]) ... end What would be the best way of white listing file types? I am thinking a before_validation method, but I'm not sure how that would work. Any ideas would be welcome.

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• Deploying rails app on phusion passenger + Nginx

  - by user1028432

  I installed passenger + nginx: gem install passenger , passenger-install-nginx-module , and making init script nginx conf(/opt/nginx/conf/nginx.conf): worker_processes 1; events { worker_connections 1024; } http { passenger_root /home/rusik/.rvm/gems/ruby-2.0.0-p247@work/gems/passenger-4.0.21; passenger_ruby /home/rusik/.rvm/wrappers/ruby-2.0.0-p247@work/ruby; include mime.types; default_type application/octet-stream; sendfile on; rails_env development; server { listen 80; server_name www.myapp.com; charset utf-8; root /home/rusik/www/testapp/public; passenger_enabled on; } } restarting nginx , and page www.myapp.com doesn't load , what can be a problem?(changeing rails_env i tried , rails s i running) I am trying a lot of time to make it works , but can't , i am also tryed install through apt repositiry, but the problem is the same , the page doesn't loaded!

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• how to generate large image in compact framework

  - by Buthrakaur

  I need to generate large images (A4 image at 200 DPI, PNG format would be fine) in my compact framework application. This is impossible to do in standard way due to memory limitations (such big image will throw OOMException). Is there any library which offers file-backed stream image generation? Or I could generate many smaller stripes of images (each stripe representing a row of the large image) using standard Bitmap approach, but I need to merge them together afterwards - is there any method how to merge many smaller images into one large without having to instantiate large Bitmap instance (which would again cause OOM)?

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• XmlSerializer.Serialize doesn't save a file and doesn't throw an exception.

  - by Wodzu

  Hi guys. I am having problem with saving of my object. Take a look at this code: public void SerializeToXML(String FileName) { XmlSerializer fSerializer = new XmlSerializer(typeof(Configuration)); using (Stream fStream = new FileStream(FileName, FileMode.Create, FileAccess.Write, FileShare.None)) { fSerializer.Serialize(fStream, this); } } The problem is that when the user does not have rights to the location on hard disk, this function will not throw me any exception and do not save my file. For example saving to "C:\test.xml" act like nothing happened. And I would like to know if the file has not been saved and it would be good to know the reason why. I know that I could check if the file on given location exists and throw an exception manualy but shouldn't this be done by the XmlSerializer or FileStream itself? Thanks for your time

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• Where to get streaming (live) video and audio from camera example app for Android?

  - by Ole Jak

  Where to get streaming (live) video and audio from camera example for Android? Suppose I want to create some live video streaming service app so I'll have some cool server at the back end. And I know how to do that part. Suppose I have some stand alone app for PCs now I want to go on to mobile devices. So I want to see some sample app grabing audio and video streams from Phone, Synchronizing them, encoding somehow, and sending LIVE stream to server. I need any Open-Source sample that will do this or something like this. Where can I get one?

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• How to declare a variable that spans multiple lines

  - by Chris Wilson

  I'm attempting to initialise a string variable in C++, and the value is so long that it's going to exceed the 80 character per line limit I'm working to, so I'd like to split it to the next line, but I'm not sure how to do that. I know that when splitting the contents of a stream across multiple lines, the syntax goes like cout << "This is a string" << "This is another string"; Is there an equivalent for variable assignment, or do I have to declare multiple variables and concatenate them? Edit: I misspoke when I wrote the initial question. When I say 'next line', I'm just meaning the next line of the script. When it is printed upon execution, I would like it to be on the same line.

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• How to process <input type="file" name="test1[f]" /> in PHP?

  - by user198729

  var_dump($_FILES) gives the following: array 'test1' => array 'name' => array 'f' => string 'ntuser.dat.LOG' (length=14) 'type' => array 'f' => string 'application/octet-stream' (length=24) 'tmp_name' => array 'f' => string 'D:\wamp\tmp\php223.tmp' (length=22) 'error' => array 'f' => int 0 'size' => array 'f' => int 0 Why is http designed this way?How can I get the file by $_FILES['test1']['f']?

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• Filtering subsets using Linq

  - by Nathan Matthews

  Hi All, Imagine a have a very long enunumeration, too big to reasonably convert to a list. Imagine also that I want to remove duplicates from the list. Lastly imagine that I know that only a small subset of the initial enumeration could possibly contain duplicates. The last point makes the problem practical. Basically I want to filter out the list based on some predicate and only call Distinct() on that subset, but also recombine with the enumeration where the predicate returned false. Can anyone think of a good idiomatic Linq way of doing this? I suppose the question boils down to the following: With Linq how can you perform selective processing on a predicated enumeration and recombine the result stream with the rejected cases from the predicate?

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• redirect inputStream to JTextField

  - by gt_ebuddy

  I want to redirect the Standard System input to JTextField, So that a user must type his/her input in JTextField (instead of console.) I found System.setIn(InputStream istream) for redirecting System.in. Here is my scratch code where i confused on reading from JTextField - inputJTextField. System.setIn(new InputStream() { @Override public int read() throws IOException { //how to read content? return Integer.parseInt(inputJTextField.getText()); } }); My Question is how to read content from GUI Component ( like JTextField and Cast it to String and other types after redirecting the input stream?

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• "Can´t open socket or connection refused" with .NET

  - by HoNgOuRu

  Im getting a connection refused when I try to send some data to my server app using netcat. server side: IPAddress ip; ip = Dns.GetHostEntry("localhost").AddressList[0]; IPEndPoint ipFinal = new IPEndPoint(ip, 12345); Socket socket = new Socket(AddressFamily.InterNetworkV6, SocketType.Stream, ProtocolType.Tcp); socket.Bind(ipFinal); socket.Listen(100); Socket handler = socket.Accept(); ------> it stops here......nothing happens

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• How to receive a datastream from a device on your computer, in C#

  - by WebDevHobo

  I plan to build a small audio-recorder app in C#. My laptop has a built in Microphone that's always active, so I want to use that as an early-stage test. I would simply start recording, save the file as a .wav or even use the LAME dll to make it into an MP3. The problem is, I don't know how to contact that microphone. Do I use a library that can detect a device, or do I just catch a stream of bytes from the port that the device is on? I don't have any experience with receiving data from connected devices. I suppose that I'll need to enter all the data into a byte array and then Serialize that into a WAV file, but I'm not sure. Can I get some pointers on this subject?

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• thumbs.db messing up my upload routine

  - by Scott B

  I'm getting the following error while uploading a zip archive. Warning: ZipArchive::extractTo(C:\xampplite\htdocs\testsite/wp-content/themes/mytheme//styles\mytheme/Thumbs.db) [ziparchive.extractto]: failed to open stream: Permission denied in C:\xampplite\htdocs\testsite\wp-content\themes\mythem\uploader.php on line 17 The thing I can't quite figure is that I don't see a thumbs.db file in either the zip archive or the destination folder that was created (the upload still processes, I just get these errors). The function is below, line 17 is commented... function openZip($file_to_open) { global $target; $zip = new ZipArchive(); $x = $zip->open($file_to_open); if($x === true) { $zip->extractTo($target); //this is line 17 $zip->close(); unlink($file_to_open); } else { die("There was a problem. Please try again!"); } }

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