named-pipes

I am trying to use PhantomJS to render an html page to pdf. I do not want to write the files to disk, I have the html in memory, and I want the pdf in memory. Using the excellent answer from Pooria Azimi at this question , i am able to get the pdf from a named pipe. When trying the same on the other end (replacing the input file with a named pipe), I end up with a blank pdf. This is what I am doing now (simplified): mkfifo in_pipe.html out_pipe.pdf ./phantomjs rasterize.js in_pipe.html out_pipe.pdf Then in another terminal: echo '<center>hey!</center>' > in_pipe.html cat out_pipe.pdf > out.pdf

I have a video stream coming in on rtp to ffmpeg and I want to pipe this to my OpenCV tools for live streaming processing. The rtp linkage is working because I am able to send the incoming data to a file and play it (or play if via ffplay). My OpenCV implementation is functional as well because I am able to capture video from a file and also a webcam. The problem is the streaming to OpenCV. I have heard that this may be done using a named pipe. First I could stream the ffmpeg output to the pipe and then have OpenCV open this pipe and begin processing. What I've tried: I make a named-pipe in my

I'm trying to create a two-way communication channel between two programs (one in Python and another in C#) When I create a named pipe between two C# programs or two Python programs, everything is OK, but when I try to (for example) connect to the C# server from Python code, it does not work: C# code: NamedPipeServerStream server = new NamedPipeServerStream( "Demo", PipeDirection.InOut, 100, PipeTransmissionMode.Byte, PipeOptions.None, 4096, 4096) If I use win32pipe in Python, code blocks on ConnectNamedPipe (it never returns) p = win32pipe.CreateNamedPipe( r'\\.\pipe\Demo', win32pipe.PIPE

A have a web-accessible (via basicHttpBinding) WCF service which I also want to access from other .NET services on the same machine with as higher performance as possible. I understand that the netNamedPipeBinding is ideal for this, but wonder what the best configuration would be given that I'm only even going to be communicating with other .NET processes. For example, I needn't necessarily use an encoding such as SOAP as this is perhaps too bulky and I don't need the compatibility with any other clients other than a .NET client. I also don't think I need any security. What would be the best

Did some search online, found simple 'tutorials' to use named pipes. However when I do anything with background jobs I seem to lose a lot of data. [[Edit: found a much simpler solution, see reply to post. So the question I put forward is now academic - in case one might want a job server]] Using Ubuntu 10.04 with Linux 2.6.32-25-generic #45-Ubuntu SMP Sat Oct 16 19:52:42 UTC 2010 x86_64 GNU/Linux GNU bash, version 4.1.5(1)-release (x86_64-pc-linux-gnu). My bash function is: function jqs { pipe=/tmp/__job_control_manager__ trap "rm -f $pipe; exit" EXIT SIGKILL if [[ ! -p "$pipe" ]]; then mkfifo

I am trying to achieve a full-duplex client-server communication scheme, on 2 different machines (only), where each end-point (client or server) can send stuff at any time, asynchronously (non-blocking pipe), and the other end will pick it up and read it. I don't want answers referring me to any other technology besides named pipes, I know about the other technologies, but I want an answer to this particular question. (I've seen this question posted so many times on different forums, and I keep seeing responses advising to use some other technology. I think this borders on rude?) I've read

I am having trouble in creating named pipe in Android and the example below illustrates my dilemma: res = mkfifo("/sdcard/fifo9000", S_IRWXO); if (res != 0) { LOG("Error while creating a pipe (return:%d, errno:%d)", res, errno); } The code always prints: Error while creating a pipe (return:-1, errno:1) I can't figure out exactly why this fails. The application has android.permission.WRITE_EXTERNAL_STORAGE permissions. I can create normal files with exactly the same name in the same location, but pipe creation fails. The pipe in question should be accessible from multiple applications. I

I am creating a named pipe using JNI by calling the mkfifo() command. I am using mode = 0666. I am then trying to write into the pipe using Java, but I get stuck while writing into the pipe. I get stuck at the following line and not able to go past it. I am not getting any error either. PrintWriter out = new PrintWriter((new BufferedWriter(new FileWriter(pipePath)))); Please help. Regards, -H PipePeer.java import java.io.*;* public class PipePeer { private native int createPipe(String pipeName, int mode);* // --------> native method to call mkfifo(pipeName, mode); static { System.load("/home