using System; using System.Collections.Generic; using System.Diagnostics; using System.Threading.Tasks; using Microsoft.VisualStudio.TestTools.UnitTesting; using MQTTnet.Client; using MQTTnet.Client.Options; using MQTTnet.Client.Receiving; using MQTTnet.Server; namespace MQTTnet.Tests { [TestClass] public class RoundtripTimeTests { [TestMethod] public async Task Round_Trip_Time() { var factory = new MqttFactory(); var server = factory.CreateMqttServer(); var receiverClient = factory.CreateMqttClient(); var senderClient = factory.CreateMqttClient(); await server.StartAsync(new MqttServerOptionsBuilder().Build()); await receiverClient.ConnectAsync(new MqttClientOptionsBuilder().WithTcpServer("localhost").Build()); await receiverClient.SubscribeAsync("#"); await senderClient.ConnectAsync(new MqttClientOptionsBuilder().WithTcpServer("localhost").Build()); TaskCompletionSource response = null; receiverClient.ApplicationMessageReceivedHandler = new MqttApplicationMessageReceivedHandlerDelegate(args => { response?.SetResult(args.ApplicationMessage.ConvertPayloadToString()); }); var times = new List(); var stopwatch = Stopwatch.StartNew(); await Task.Delay(1000); for (var i = 0; i < 100; i++) { response = new TaskCompletionSource(); await senderClient.PublishAsync("test", DateTime.UtcNow.Ticks.ToString()); response.Task.GetAwaiter().GetResult(); stopwatch.Stop(); times.Add(stopwatch.Elapsed); stopwatch.Restart(); } await server.StopAsync(); } } }