How Can Named Pipes Facilitate Simple Inter-Process Communication?

Named Pipes: A Practical Example of Inter-Process Communication

Named pipes offer a robust and efficient solution for inter-process communication (IPC). This example uses a simple console application to demonstrate how two programs exchange messages via named pipes.

We'll build two programs: Program A, which sends a message, and Program B, which receives and responds.

Program A: Sending the Message

Program A uses the .NET Framework's NamedPipeClientStream to connect to a named pipe called "PipeLine." After connecting, it transmits the message "Hello World" using a StreamWriter.

Program B: Receiving and Responding

Program B employs NamedPipeServerStream to create and monitor the "PipeLine" named pipe. Upon connection, a StreamReader and StreamWriter handle message reception and response.

// Program A
using (var client = new NamedPipeClientStream("PipeLine")) {
    client.Connect();
    using (var writer = new StreamWriter(client)) {
        writer.WriteLine("Hello World");
        writer.Flush();
    }
}

// Program B
using (var server = new NamedPipeServerStream("PipeLine")) {
    server.WaitForConnection();
    using (var reader = new StreamReader(server))
    using (var writer = new StreamWriter(server)) {
        string message = reader.ReadLine();
        writer.WriteLine("Roger That");
        writer.Flush();
    }
}

This illustrates the core principles of named pipe communication: pipe creation, connection establishment, and message exchange. This straightforward example provides a foundational understanding for implementing IPC solutions in your projects.

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