Correct way to send a handshake or connect

[Tarekmo110]

I'm trying to simulate a charge point and connect to the server. I think the server is working fine but the problem is how i connect to it.
I'm using this to connect
const newSocket = new WebSocket(${ocppJEndpointUrl}/${encodeURIComponent(chargePointIdentity)},['ocpp1.6', 'ocpp1.5']);
so it should look like this
ws://localhost:3000/ABCD with protocols [ocpp1.6,ocpp1.5]
this is the error i get

const err = Error(reason);
^
Error [AbortError]: Client disconnected
at Object.pendingCall.abort (/home/tarek/Desktop/ocpp_csms/server/node_modules/ocpp-rpc/lib/client.js:338:29)
at /home/tarek/Desktop/ocpp_csms/server/node_modules/ocpp-rpc/lib/client.js:440:63
at Array.forEach ()
at RPCServerClient._rejectPendingCalls (/home/tarek/Desktop/ocpp_csms/server/node_modules/ocpp-rpc/lib/client.js:440:48)
at RPCServerClient._handleDisconnect (/home/tarek/Desktop/ocpp_csms/server/node_modules/ocpp-rpc/lib/client.js:458:14)
at WebSocket. (/home/tarek/Desktop/ocpp_csms/server/node_modules/ocpp-rpc/lib/client.js:410:49)
at Object.onceWrapper (node:events:629:26)
at WebSocket.emit (node:events:526:35)
at WebSocket.emit (node:domain:489:12)
at WebSocket.emitClose (/home/tarek/Desktop/ocpp_csms/server/node_modules/ws/lib/websocket.js:258:10)

[mikuso]

Hi,

Please can you clarify a few things for me?

• Are you using this module to create a central system, a charging station simulator, or both?
• Is the error being reported by your client (simulator) or by the server?

Thanks.

[Tarekmo110]

I will use it to create a central system but i was just testing things out first and familiarizing myself with this module.

I have a simple ui with a connect button that tries to establish a web-socket connection, as a charge point, with the server i created using the example you gave in express

I get this in the browser https://imgur.com/a/bzsPmKk

And I get this in the server https://imgur.com/a/WWyW64S I added some console.log to client.js

if u need any more info please let me know

[mikuso]

From your screenshots, it looks like the server is crashing, which is why your client's websocket is disconnecting.

Can we take a look at your server code to see what might be causing that to happen?