Passing messages between Node.js and C#.

Program.cs

using System;
using System.Text;

namespace NodeIPC
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = Console.OpenStandardInput();

            var buffer = new byte[1024];
            int length;
            while (input.CanRead && (length = input.Read(buffer, 0, buffer.Length)) > 0)
            {
                var payload = new byte[length];

                Buffer.BlockCopy(buffer, 0, payload, 0, length);
                
                Console.Write("Receiving: " + Encoding.UTF8.GetString(payload));
                Console.Out.Flush();
            }
        }
    }
}

server.js

// run `node server.js` with NodeIPC.exe in the same directory.

var spawn = require('child_process').spawn;

var ipc = spawn("./NodeIPC.exe"); 
ipc.stdin.setEncoding("utf8");

ipc.stderr.on('data', function (data) {
    process.stdout.write(data.toString());
});

ipc.stdout.on('data', function (data) {
    process.stdout.write(data.toString());
});

var message = { type: "Greeting", data: "Hello, World!" };

console.log("Sending: ", JSON.stringify(message));

ipc.stdin.write(JSON.stringify(message) + "\n");

// to allow sending messages by typing into the console window.
var stdin = process.openStdin();

stdin.on('data', function (data) {
    ipc.stdin.write(data);
});