Created
May 18, 2018 18:36
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C# Application, reconnect issue
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using System; | |
using System.Text; | |
using System.Threading; | |
using System.Threading.Tasks; | |
using NATS.Client; | |
namespace ConsoleApp1 | |
{ | |
public class Program | |
{ | |
private static IAsyncSubscription subscription; | |
private static IConnection subscriptionConnection; | |
private static IConnection publishConnection; | |
public static void Main(string[] args) | |
{ | |
var cancellationTokenSource = new CancellationTokenSource(); | |
var connectionFactory = new ConnectionFactory(); | |
var options = ConnectionFactory.GetDefaultOptions(); | |
options.Url = "nats://127.0.0.1:4222"; | |
options.AllowReconnect = true; | |
options.DisconnectedEventHandler += (sender, eventArgs) => | |
{ | |
Console.Error.WriteLine("Server disconnected: " + eventArgs.Conn.LastError?.Message); | |
}; | |
options.ReconnectedEventHandler += (sender, eventArgs) => | |
{ | |
Console.WriteLine("Server reconnected for connection: " + eventArgs.Conn.Opts.Name); | |
}; | |
options.AsyncErrorEventHandler += (sender, eventArgs) => | |
{ | |
Console.Error.WriteLine("Async error: " + eventArgs.Error); | |
}; | |
Task.Factory.StartNew(() => | |
{ | |
try | |
{ | |
// Not threadsafe, but this is an example | |
options.Name = "subconn"; | |
using (subscriptionConnection = connectionFactory.CreateConnection(options)) | |
{ | |
subscription = subscriptionConnection.SubscribeAsync("*.two", (sender, eventArgs) => | |
{ | |
var message = Encoding.UTF8.GetString(eventArgs.Message.Data); | |
Console.WriteLine($"Received Message: {message}, Subject: {eventArgs.Message.Subject}"); | |
}); | |
cancellationTokenSource.Token.WaitHandle.WaitOne(); | |
subscription.Dispose(); | |
} | |
} | |
catch (Exception e) | |
{ | |
Console.WriteLine(e.Message); | |
} | |
}, cancellationTokenSource.Token); | |
Task.Factory.StartNew(() => | |
{ | |
// Not threadsafe, but this is an example | |
options.Name = "pubconn"; | |
using (publishConnection = connectionFactory.CreateConnection(options)) | |
{ | |
var i = 0; | |
while (!cancellationTokenSource.IsCancellationRequested) | |
{ | |
var message = $"Message {i}"; | |
try | |
{ | |
publishConnection.Publish($"{i}.two", Encoding.UTF8.GetBytes(message)); | |
Console.WriteLine("Message published: " + message); | |
} | |
catch | |
{ | |
Console.Error.WriteLine("Failed to publish message: " + message); | |
} | |
i++; | |
Thread.Sleep(500); | |
} | |
} | |
}, cancellationTokenSource.Token); | |
Task.Factory.StartNew(() => | |
{ | |
while (!cancellationTokenSource.IsCancellationRequested) | |
{ | |
if (publishConnection != null && subscriptionConnection != null && subscription != null) | |
{ | |
Console.WriteLine("Subscription Connection State: " + subscriptionConnection.State); | |
Console.WriteLine("Publish Connection State: " + subscriptionConnection.State); | |
Console.WriteLine("Subscription Is Valid: " + subscription.IsValid); | |
} | |
Thread.Sleep(1000); | |
} | |
}, cancellationTokenSource.Token); | |
Console.ReadKey(); | |
cancellationTokenSource.Cancel(); | |
} | |
} | |
} |
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