Getting started code

Hello guys.

Disclaimer: Beginner here :slight_smile:
I’ve just started looking at the event store and I’m having some difficulties getting it to work. The idea is just to write a simple “event” to the event store. Here’s my code:

using EventStore.ClientAPI;

using System;

using System.Text;

using System.Threading.Tasks;

using System.Net;

using Newtonsoft.Json;

namespace eventstoretests {

class Program


static void Main(string[] args)





public static async Task DoIt() {

var settings = ConnectionSettings.Create()


.OnAuthenticationFailed((c, info) => Console.WriteLine(“autherr”))


.OnDisconnected((c1, ip) => Console.WriteLine(“oopsss”))

.OnErrorOccurred((c, ex) => Console.WriteLine(ex.ToString()))

.SetDefaultUserCredentials(new EventStore.ClientAPI.SystemData.UserCredentials(“admin”, “changeit”));

var cnn = EventStoreConnection.Create(settings, new IPEndPoint(IPAddress.Loopback, 2113));

var aggId = Guid.NewGuid();

await cnn.ConnectAsync();

try {

await WriteEvents(cnn, aggId, ExpectedVersion.NoStream, new Test(Guid.NewGuid(), 1));

await WriteEvents(cnn, aggId, 1, new Test(Guid.NewGuid(), 2));


finally {




const string _baseStream = “Test”;

public static async Task WriteEvents(IEventStoreConnection cnn, Guid aggId, int expectedVersion, Test @event) {

var bytes = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(@event));

await cnn.AppendToStreamAsync(

_baseStream + “-” + aggId,


new EventData(@event.Id,







class Test {

public readonly Guid Id;

public readonly int Version;

public Test(Guid id, int version) {

Id = id;

Version = version;




Looking at the console, I can see there’s an error saying Invalid TCP frame received:

[06,21:23:27.392,ERROR] Invalid TCP frame received.


EventStore.ClientAPI.Transport.Tcp.PackageFramingException: Package size is out

of bounds: 1347703880 (max: 67108864).

at EventStore.ClientAPI.Transport.Tcp.LengthPrefixMessageFramer.Parse(ArraySe

gment`1 bytes)

at EventStore.ClientAPI.Transport.Tcp.LengthPrefixMessageFramer.UnFrameData(I

Enumerable`1 data)

at EventStore.ClientAPI.Transport.Tcp.TcpPackageConnection.OnRawDataReceived(

ITcpConnection connection, IEnumerable`1 data)

Can anyone help? Is there any good link for getting started with the event store?



Use port 1113 for tcp, 2113 for http

hmm I had posted but phone must have been out of wifi range

Rookie mistake :frowning:

Thanks guys!

You are connecting to the http port 2113 try 1113 which is default tcp port

It arrived!