List item
[2025-11-19T14:03:33.645Z] Error: Failed to start the transport 'WebSockets': Error: WebSocket failed to connect. The connection could not be found on the server, either the endpoint may not be a SignalR endpoint, the connection ID is not present on the server, or there is a proxy blocking WebSockets. If you have multiple servers check that sticky sessions are enabled.
this.hubConnection = new signalR.HubConnectionBuilder()
.withUrl(
`${environment.serviceUrl}/hubs/notifications?userId=${userId}&applicationId=${applicationId}`,
{
accessTokenFactory: () => {
return this.authService.idToken;
},
transport: signalR.HttpTransportType.WebSockets
}
)
.withAutomaticReconnect()
.configureLogging(signalR.LogLevel.Debug)
.build();
this.hubConnection
.start()
.then(() => console.log('[SignalR] Connected'))
.catch(err => console.error('[SignalR] Connection error:', err));
}
I have already allowed cores
services.AddCors(o => o.AddPolicy("AllowCors", builder =>
{
builder.SetIsOriginAllowed(origin => true)
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials();
}));
and same thing when i am doing with application which does not use any auth, it works.
