英文:
RabbitMq connection failed exception on production server
问题
以下是您要翻译的代码部分：
我有一个基于.NET 4.6.2构建的Windows Forms应用程序。我正在使用以下代码将该应用程序连接到RabbitMQ。RabbitMQ服务部署在单独的服务器上。
var factory = new ConnectionFactory() { HostName = _host, Port = _port, UserName = _userName, Password = _password };
if (_port != 5672){
factory.Ssl.Enabled = true;
factory.Ssl.Version = System.Security.Authentication.SslProtocols.Tls12;
factory.Ssl.CertificateValidationCallback = delegate (object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; };}
Client = factory.CreateConnection();
Channel = Client.CreateModel();
这在生产环境中完全正常工作。最近我们计划发布一个新版本，在该版本中其他组件发生了变化，但此应用程序没有发生变化。然而，当我在生产服务器上运行该应用程序时，它会出现以下异常。
RabbitMQ.Client.Exceptions.BrokerUnreachableException: 无法连接到指定的端点 ---> System.IO.IOException: 由于网络超时，可能未收到connection.start
在RabbitMQ.Client.Framing.Impl.Connection.StartAndTune()
在RabbitMQ.Client.Framing.Impl.Connection.Open(Boolean insist)
在RabbitMQ.Client.Framing.Impl.AutorecoveringConnection.Init(IFrameHandler fh)
在RabbitMQ.Client.ConnectionFactory.CreateConnection(IEndpointResolver endpointResolver, String clientProvidedName)
--- 内部异常堆栈跟踪的结尾 ---
在RabbitMQ.Client.ConnectionFactory.CreateConnection(IEndpointResolver endpointResolver, String clientProvidedName)
在LiveStatisticsBroker.CheckAndUpdateSessionStatus() in LiveStatistics.cs:line 105
代码没有更改，如果我恢复到先前的版本，它可以正常工作。我已经检查了网络连接，即使使用telnet连接服务器IP和端口5671也没有问题。
奇怪的是，如果我将相同的发布版本放在开发服务器上，RabbitMQ可以连接。我们的开发服务器也遵循相同的网络规则。我已经被困在这个问题上一段时间，但没有取得任何成功。
英文:
I have a windows forms application that is built on .NET 4.6.2. I'm connecting the app to rabbitmq using below code. Rabbit mq services are deployed on a separate server.
var factory = new ConnectionFactory() { HostName = _host, Port = _port, UserName = _userName, Password = _password };
if (_port != 5672){
factory.Ssl.Enabled = true;
factory.Ssl.Version = System.Security.Authentication.SslProtocols.Tls12;
factory.Ssl.CertificateValidationCallback = delegate (object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors) { return true; };}
Client = factory.CreateConnection();
Channel = Client.CreateModel();
This is working completely fine in production. Now recently we were planning a new release where there were changes in other components but no changes in this app however when I run the app on production server it gives below exception.
RabbitMQ.Client.Exceptions.BrokerUnreachableException: None of the specified endpoints were reachable ---> System.IO.IOException: connection.start was never received, likely due to a network timeout
at RabbitMQ.Client.Framing.Impl.Connection.StartAndTune()
at RabbitMQ.Client.Framing.Impl.Connection.Open(Boolean insist)
at RabbitMQ.Client.Framing.Impl.AutorecoveringConnection.Init(IFrameHandler fh)
at RabbitMQ.Client.ConnectionFactory.CreateConnection(IEndpointResolver endpointResolver, String clientProvidedName)
--- End of inner exception stack trace ---
at RabbitMQ.Client.ConnectionFactory.CreateConnection(IEndpointResolver endpointResolver, String clientProvidedName)
at LiveStatisticsBroker.CheckAndUpdateSessionStatus() in LiveStatistics.cs:line 105
There are no changes in the code and if I revert to the previous release it works fine. I have checked network connectivity and there are no issues even if I telnet the server IP and with port 5671 it gets succeeded.
Strange thing is If I place same release on development server rabbitmq gets connected. Our development servers also follow same network rules. I have been stuck on this for some time and couldn't get any success.
答案1
得分: 0
升级 RabbitMq.Client NuGet 包从 6.2.1 到 6.5.0 对我有帮助。System.Memory 也被升级为一个依赖项。
英文:
Upgrading RabbitMq.Client nuget package from 6.2.1 to 6.5.0 did the trick for me. System.Memory was also upgraded as a dependency.
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