"None of the specified endpoints were reachable", "connection.start was never received, likely due to a network timeout" about easynetq

[zidad]

looks like a "normal" connectivity problem, can't really say something useful without a reproducible sample with code, can you provide that?

[zidad]

Hi Vasilis, The problem is here:

using(var bus = RabbitHutch.CreateBus(...

Do not dispose of your bus instance immediately, you should rather keep it for the lifetime of your application (so register it as a singleton in your container), and dispose of it when your process is stopped. Hope this helps, Wiebe

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On Thu, 11 May 2023 at 09:16, Vasilis ***@***.***> wrote: We are trying to publish a message to a queue to RabbitMQ. We are using *.NET Framework 4.7.2*. We are having issues with the code below: var connection = new ConnectionConfiguration(){ UserName = "guest", Password = "guest", VirtualHost = "/", PrefetchCount = 1}; var host = new HostConfiguration(){ Host = "localhost", Port = 5672,}; connection.Hosts = new List<HostConfiguration> { host }; using (var bus = RabbitHutch.CreateBus(connection, x =>{ x.Register<IConventions>(c => new ErrorConventions(c.Resolve<ITypeNameSerializer>()));})){ var exchange = bus.Advanced.ExchangeDeclare("ex", ExchangeType.Direct); bus.Advanced.Publish(exchange, "test", false, new Message<object>(data));} We are using ASP.NET and this code works as expected when we execute it in an .aspx page. However, the exact same code does not work when we execute it through an API function and we always end up getting the following exception: [image: image] <https://user-images.githubusercontent.com/35144611/237603004-a46f40e4-9b68-4285-a6e1-3df2dbd30075.png> We are unable to figure out why the exact same code works in the .aspx pages but not in our API. We are using the following setup for our queue and exchange: [image: image] <https://user-images.githubusercontent.com/35144611/237598734-1ce21745-6383-4b64-b85b-488421a7f135.png> [image: image] <https://user-images.githubusercontent.com/35144611/237598902-ece9b3a1-20a5-4229-9475-d93a1b6d43e3.png> - EasyNetQ version: 6.5.2 - RabbitMQ version: 3.11.15 — Reply to this email directly, view it on GitHub <#1670>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACJ7OVBOVHZUC5MEIC7KL3XFSG35ANCNFSM6AAAAAAX5WCPLQ> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[AkyrosXD]

Hi @zidad,
I have already tried this yesterday and I get this error:
A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond <IP>:5671

Any idea what I should do in this case?

[AkyrosXD]

The code that I have provided above is all that I can give.
Unfortunately, I do not have exactly any clue of how to reproduce this exact scenario, since I am already trying to figure out what is going on, which is why I opened this issue in the first place, because I do not know what else to do.

[zidad]

I already gave an indication what the issue is in the above code, so there's not much I can do without new information, so I'm going to close this issue if that's ok?

[AkyrosXD]

yes, it;'s fine. thank you anyway 🙂