Sample code gives EventStore.ClientAPI.Exceptions.ConnectionClosedException: 'Connection was closed.'

Hello

I am new to EventStore and wanted to try it out hence I went to the docs and used some of the sample code but immediately ended up with a connection issue.

Server setup:
Single node docker-compose from:

https://developers.eventstore.com/server/v21.10/installation.html#use-docker-compose

version: "3.4"

services:
  eventstore.db:
    image: eventstore/eventstore:21.10.0-buster-slim
    environment:
      - EVENTSTORE_CLUSTER_SIZE=1
      - EVENTSTORE_RUN_PROJECTIONS=All
      - EVENTSTORE_START_STANDARD_PROJECTIONS=true
      - EVENTSTORE_EXT_TCP_PORT=1113
      - EVENTSTORE_HTTP_PORT=2113
      - EVENTSTORE_INSECURE=true
      - EVENTSTORE_ENABLE_EXTERNAL_TCP=true
      - EVENTSTORE_ENABLE_ATOM_PUB_OVER_HTTP=true
    ports:
      - "1113:1113"
      - "2113:2113"
    volumes:
      - type: volume
        source: eventstore-volume-data
        target: /var/lib/eventstore
      - type: volume
        source: eventstore-volume-logs
        target: /var/log/eventstore

volumes:
  eventstore-volume-data:
  eventstore-volume-logs:

Client setup:
.NET nuget EventStore.Client v21.2.2
Transaction sample from:

https://developers.eventstore.com/clients/dotnet/5.0/appending.html#transactions

static EventData CreateSample(int i)
{
    var sampleObject = new { a = i };
    var data = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(sampleObject));
    var metadata = Encoding.UTF8.GetBytes("{}");
    var eventPayload = new EventData(
        Guid.NewGuid(), 
        "event-type", 
        true, 
        data, 
        metadata
    );
    return eventPayload;
}

public static async Task Main()
{
    var conn = EventStoreConnection.Create(new Uri("tcp://admin:changeit@localhost:1113"));
    await conn.ConnectAsync();

    using var transaction = 
        await conn.StartTransactionAsync("newstream", ExpectedVersion.Any);

    await transaction.WriteAsync(CreateSample(1));
    await transaction.WriteAsync(CreateSample(2));
    await conn.AppendToStreamAsync("newstream", ExpectedVersion.Any, CreateSample(3));
    await transaction.WriteAsync(CreateSample(4));
    await transaction.WriteAsync(CreateSample(5));
    await transaction.CommitAsync();
}

Observations:
In the browser dashboard I do not see any connections being made when the conn.ConnectAsync() part is executed which I find odd?

When the conn.StartTransactionAsync(…) part executes I immediately see a connection in the dashboard however every couple seconds the id and port changes. It seems like reconnects continuously occurs.
It continues on like that for close to a minute before given the exception mentioned in topic:

EventStore.ClientAPI.Exceptions.ConnectionClosedException: ‘Connection ‘ES-7a6288d3-005c-4f3a-a1a5-1e3db12e1779’ was closed.’

Anyone who can help out?