Unable to connect the Rabbitnq hosted in gcp

[GokulThanu]

Unable to connect rabbitmq using the below code which is hosted in GCP

ConnectionFactory factory = new ConnectionFactory() { HostName = "Ip adress where it is hosted", Port = 15672, UserName = "guest", Password = "guest" };
factory.ClientProvidedName = "Rabbit Sender App";
IConnection cnn = factory.CreateConnection();

But i am able to access the rabbitmq while using the ip address and the port in the url

Exception details

RabbitMQ.Client.Exceptions.BrokerUnreachableException
HResult=0x80131620
Message=None of the specified endpoints were reachable
Source=RabbitMQ.Client
StackTrace:
at RabbitMQ.Client.ConnectionFactory.CreateConnection(IEndpointResolver endpointResolver, String clientProvidedName)
at SyncTrackClient.SyncTrackClient.SendToRabbitMQ() in D:\internal tool\cloud checking\client\SyncTrack-Client\src\SyncTrackClient\SyncTrackClient.cs:line 154
at SyncTrackClient.SyncTrackClient.Timer_Tick(Object sender) in D:\internal tool\cloud checking\client\SyncTrack-Client\src\SyncTrackClient\SyncTrackClient.cs:line 85
at System.Threading.TimerQueueTimer.<>c.<.cctor>b__27_0(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)

This exception was originally thrown at this call stack:
RabbitMQ.Client.Impl.InboundFrame.ReadFrom(System.IO.Stream, byte[], System.Buffers.ArrayPool, uint)
RabbitMQ.Client.Impl.SocketFrameHandler.ReadFrame()
RabbitMQ.Client.Framing.Impl.Connection.MainLoopIteration()
RabbitMQ.Client.Framing.Impl.Connection.MainLoop()

Inner Exception 1:
IOException: connection.start was never received, likely due to a network timeout

Inner Exception 2:
EndOfStreamException: Reached the end of the stream. Possible authentication failure.