RabbitMQ本地正常，发布到服务器上 出行连接失败

本地允许正常，发布到服务器上遇到如下异常：

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<br/>   
在 RabbitMQ.Client.Framing.Impl.Connection.StartAndTune()<br/>   在 RabbitMQ.Client.Framing.Impl.Connection.Open(Boolean insist)<br/>  
 在 RabbitMQ.Client.Framing.Impl.Connection..ctor(IConnectionFactory factory, Boolean insist, IFrameHandler frameHandler, String clientProvidedName)<br/>   
在 RabbitMQ.Client.Framing.Impl.AutorecoveringConnection.Init(IFrameHandler fh)<br/>  
 在 RabbitMQ.Client.Framing.Impl.AutorecoveringConnection.Init(IEndpointResolver endpoints)<br/>   
在 RabbitMQ.Client.ConnectionFactory.CreateConnection(IEndpointResolver endpointResolver, String clientProvidedName)<br/>  
 --- 内部异常堆栈跟踪的结尾 ---<br/>
   在 RabbitMQ.Client.ConnectionFactory.CreateConnection(IEndpointResolver endpointResolver, String clientProvidedName)<br/>   
在 RabbitMQ.Client.ConnectionFactory.CreateConnection(String clientProvidedName)<br/>  

 折腾了一天，最终把 web项目中 用Nuget 也安装引用下  “RabbitMQ.Client” ，重新发布即可。