C#•9mo ago

❔ trying to consume signalr through gateway

I am using the followin json in my gateway

{
  "DownstreamPathTemplate": "/ws",
  "UpstreamPathTemplate": "/",
  "DownstreamScheme": "ws",
  "DownstreamHostAndPorts": [
    {
      "Host": "localhost",
      "Port": 7200
    }
  ]
},
{
  "DownstreamPathTemplate": "/DriversHub/GetDriversDetail/{number}",
  "DownstreamScheme": "ws",
  "DownstreamHostAndPorts": [
    {
      "Host": "localhost",
      "Port": 7200
    }
  ],
  "UpstreamPathTemplate": "/upwg/DriversHub/GetDriversDetail/{number}",
  "UpstreamHttpMethod": [ "GET", "POST", "PUT", "DELETE", "OPTIONS" ]
}

{
  "DownstreamPathTemplate": "/ws",
  "UpstreamPathTemplate": "/",
  "DownstreamScheme": "ws",
  "DownstreamHostAndPorts": [
    {
      "Host": "localhost",
      "Port": 7200
    }
  ]
},
{
  "DownstreamPathTemplate": "/DriversHub/GetDriversDetail/{number}",
  "DownstreamScheme": "ws",
  "DownstreamHostAndPorts": [
    {
      "Host": "localhost",
      "Port": 7200
    }
  ],
  "UpstreamPathTemplate": "/upwg/DriversHub/GetDriversDetail/{number}",
  "UpstreamHttpMethod": [ "GET", "POST", "PUT", "DELETE", "OPTIONS" ]
}

and the front end has this code

2 Replies

PontiacGTX•9mo ago

  hub: HubConnection | null = null;
  constructor() {
    this.onGetDriverCallBack = null;
    this.hub = new signalR.HubConnectionBuilder().withUrl('http://localhost:7145/upgw/DriversHub').build();
    this.hub.start();
    console.log(this.hub);
    this.hub.onreconnecting((error?: Error) => {
      if (error) {
        console.log(`Connection lost due to error: ${error.message.toString()}`);
      }
    });

    this.hub.onreconnected(() => {
      console.log('Connection reestablished');
    });

    this.hub.start().then(() => {
      console.log('Connection established');
    }).catch((error: Error) => {
      console.log('Error establishing connection: ' + error.message);
    });
  }

  hub: HubConnection | null = null;
  constructor() {
    this.onGetDriverCallBack = null;
    this.hub = new signalR.HubConnectionBuilder().withUrl('http://localhost:7145/upgw/DriversHub').build();
    this.hub.start();
    console.log(this.hub);
    this.hub.onreconnecting((error?: Error) => {
      if (error) {
        console.log(`Connection lost due to error: ${error.message.toString()}`);
      }
    });

    this.hub.onreconnected(() => {
      console.log('Connection reestablished');
    });

    this.hub.start().then(() => {
      console.log('Connection established');
    }).catch((error: Error) => {
      console.log('Error establishing connection: ' + error.message);
    });
  }

an it is returning that it cannot stablish connection

Error establishing connection: Cannot start a HubConnection that is not in the 'Disconnected' state.

Error establishing connection: Cannot start a HubConnection that is not in the 'Disconnected' state.

my Gateway has

await app.UseOcelot(configuration);
app.UseWebSockets();

await app.UseOcelot(configuration);
app.UseWebSockets();

on program.cs my api has

app.MapControllers();
app.MapHub<DriversHub>("/DriversHub");

app.MapControllers();
app.MapHub<DriversHub>("/DriversHub");

my hub is defined like

public class DriversHub:Hub
    {
        private IDriversServices _driversServices;
        private ILogger<DriversHub> _logger;

        public DriversHub(IDriversServices driversServices, ILogger<DriversHub> logger)
        {
            _driversServices = driversServices;
            _logger = logger;
        }

        public override async Task OnConnectedAsync()
        {
            var userName = Context.User?.Claims.FirstOrDefault(x => x.Type == "email")?.Value;

            if (!string.IsNullOrEmpty(userName))
                await Groups.AddToGroupAsync(Context.ConnectionId, userName);

            await base.OnConnectedAsync();
        }

        public async Task GetDriversDetail(string number)
        {
         
            var model = new Data.Model.GetDriverInformationModel { Number = number};
            try
            {
                DriverInfo info = new DriverInfo();
                info = (await _driversServices.GetDriverInformation(model)).ToList();
                await Clients.Users(number).SendAsync("OnGetDriverDetails"/*, dest*/, Factory.OkResponse(info));
            }
            catch (Exception ex)
            {
                _logger.LogException(ex, model);
            }

        }
}

public class DriversHub:Hub
    {
        private IDriversServices _driversServices;
        private ILogger<DriversHub> _logger;

        public DriversHub(IDriversServices driversServices, ILogger<DriversHub> logger)
        {
            _driversServices = driversServices;
            _logger = logger;
        }

        public override async Task OnConnectedAsync()
        {
            var userName = Context.User?.Claims.FirstOrDefault(x => x.Type == "email")?.Value;

            if (!string.IsNullOrEmpty(userName))
                await Groups.AddToGroupAsync(Context.ConnectionId, userName);

            await base.OnConnectedAsync();
        }

        public async Task GetDriversDetail(string number)
        {
         
            var model = new Data.Model.GetDriverInformationModel { Number = number};
            try
            {
                DriverInfo info = new DriverInfo();
                info = (await _driversServices.GetDriverInformation(model)).ToList();
                await Clients.Users(number).SendAsync("OnGetDriverDetails"/*, dest*/, Factory.OkResponse(info));
            }
            catch (Exception ex)
            {
                _logger.LogException(ex, model);
            }

        }
}

what am I doing wrong? there is no identity or claims as of now

Accord•9mo ago

Looks like nothing has happened here. I will mark this as stale and this post will be archived until there is new activity.

Gaming

Programming

❔ trying to consume signalr through gateway