using System;
using System.Collections.Generic;
using System.Threading;
using RabbitMQ.Client;


namespace DotNetExperiments
{
    public static class Program
    {
        private static readonly ReadOnlyMemory<byte> SentBody = new byte[] {42, 42, 42, 42, 42};
        
        public static void Main()
        {
            // Boostrap stuff
            var connectionFactory = new ConnectionFactory
            {
                Uri = new Uri("amqps://apwlvbny:[email protected]/apwlvbny")
            };
            var connection = connectionFactory.CreateConnection();
            var model = connection.CreateModel();
            var queue = Guid.NewGuid().ToString("N");
            model.QueueDeclare(queue, false, false);

            // Let's store all received bodies
            var receivedBodies = new List<ReadOnlyMemory<byte>>();
            while (true)
            {
                Thread.Sleep(100);

                // Then every iteration we recheck all received bodies: they should match with sentBody 
                foreach (var receivedBody in receivedBodies) CheckReceivedBody(receivedBody);

                model.BasicPublish("", queue, true, null, SentBody);
                var getResult = model.BasicGet(queue, true);
                if (getResult == null)
                    continue;

                // Store received body
                receivedBodies.Add(getResult.Body);
            }
        }

        private static void CheckReceivedBody(ReadOnlyMemory<byte> receivedBody)
        {
            if (receivedBody.Span.SequenceEqual(SentBody.Span))
                return;
            
            Console.WriteLine($"Mismatch: {string.Join(",", receivedBody.Span.ToArray())} != {string.Join(",", SentBody.Span.ToArray())}");
        }
    }
}

Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42
Mismatch: 8,0,0,0,0 != 42,42,42,42,42