使用 dotnet core 在 linux 上处理 fifo 数据

Question

I would like to use Linux's fifo-like stream on disk (created by using mkfifo) with C# code (dotnet core). I am looking for examples with using data on disk but I have trouble with finding ones.

I would like to make some modifications of fifo data on disk (eg first.raw) and using another tool/task (written in dotnet core) read that fifo and make an another modification and send it to another fifo data (eg second.raw) and finally by using third tool/task read that second.raw data modify it and send to another fifo data (eg third.raw) to read it by another tool.

Is it possible using dotnet core on Linux? Is there any correct way to do that on Linux (queue, named pipes)?

EDIT
When I am doing this on Ubuntu 18.04 (before running: mkfifo fifoStream.pipe):

FileStream fs = File.OpenWrite( "fifoStream.pipe" );  
using (var sw = new StreamWriter(fs))  
{  
  sw.WriteLine("first line");  
  sw.Flush();
}    
fs.Close();  

and running code it hang up and I have to use ctrl+c to stop execution of the app.

Answer 1

I found a solution for Ubuntu 18.04. As per: https://johnkoerner.com/csharp/IPC-in-net-core-using-protobuf/ This works for my case:

first running "server" code:

static void Main(string[] args)
{
    Console.WriteLine("Starting Server");

    var pipe = new NamedPipeServerStream("fifoStream.pipe", PipeDirection.InOut);
    Console.WriteLine("Waiting for connection....");
    pipe.WaitForConnection();

    Console.WriteLine("Connected");
    pipe.WriteByte(66);
    pipe.Disconnect();
}

then running "client" code:

static void Main(string[] args)
{
    Console.WriteLine("Starting Client");
    var pipe = new NamedPipeClientStream(".", "fifoStream.pipe", PipeDirection.InOut, PipeOptions.None);
    Console.WriteLine("Connecting");
    pipe.Connect();
    pipe.ReadByte(); //here I receive byte 66

    Console.WriteLine("Done");
}