Unexpected connection close when publishing multiple messages

[pardahlman]

When publishing a lot of messages (1'000'000+) there are some flip sides, like

RabbitMQ.Client.Exceptions.OperationInterruptedException: The AMQP operation was interrupted: AMQP close-reason, initiated by Peer, code=504, text="CHANNEL_ERROR - expected 'channel.open'", classId=60, methodId=40, cause=
   at RabbitMQ.Client.Impl.SimpleBlockingRpcContinuation.GetReply(TimeSpan timeout)
   at RabbitMQ.Client.Impl.ModelBase.ModelRpc(MethodBase method, ContentHeaderBase header, Byte[] body)
   at RabbitMQ.Client.Framing.Impl.Model._Private_ChannelOpen(String outOfBand)
   at RabbitMQ.Client.Framing.Impl.AutorecoveringConnection.CreateNonRecoveringModel()
   at RabbitMQ.Client.Framing.Impl.AutorecoveringConnection.CreateModel()
   at RawRabbit.Common.ChannelFactory.<>c.<CreateChannelAsync>b__12_0(Task`1 c)

This should be fixed