Question

我有简单的推送通知SignalR应用程序，并且必须将其托管在Azure上，它在我的本地主机上运行良好，但在天蓝色下则无法运行。下面是代码。这是微服务解决方案，因此某些配置与微服务有关。

public class Startup
    {
        private const string SwaggerApiVersion = "v1";
        private const string SwaggerApiTitle = "Messaging Microservice API";
        public Startup(IConfiguration configuration)
        {
            Configuration = configuration;
        }

        public IConfiguration Configuration { get; }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddCors();
            services.AddMvc();
            services.AddAuthentication("BasicAuthentication")
                    .AddScheme<AuthenticationSchemeOptions, BasicAuthenticationHandler>("BasicAuthentication", null);
            services.AddScoped<IAuthenticationRepository, AuthenticationRepository>();

            Utility.Swagger.SwaggerConfig.ConfigureService(services, SwaggerApiVersion, SwaggerApiTitle,
                Path.Combine(AppContext.BaseDirectory, $"{Assembly.GetExecutingAssembly().GetName().Name}.xml"));

            services.AddSignalR();
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            Tracking.SetConfiguration();

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            app.UseCors(builder => builder.AllowAnyOrigin().AllowAnyMethod().AllowAnyHeader().AllowCredentials());
            app.UseAuthentication();
            app.UseSignalR(routes =>
            {
                routes.MapHub<NotificationHub.NotificationHub>("/notificationHub");
            });

            app.UseMvc();
            Utility.Swagger.SwaggerConfig.ConfigureApplication(app, SwaggerApiVersion, SwaggerApiTitle);

            Tracking.TrackEvent(Assembly.GetEntryAssembly().GetName().Name + ".Started");
        }
    }

下面是集线器类。

public class NotificationHub : Hub
{
    public async Task SendMessage(List<string> userIds)
    {
        await Clients.All.SendAsync("ReceiveMessage", userIds);
    }

    public async Task SendToAll(string name, string message)
    {
        await Clients.All.SendAsync("SendToAll", name, message);
    }
}

实际上没有从我的react客户端建立连接，并且我无法调用集线器方法（SendMessage，SendToAll）。

下面是响应客户端连接代码。

componentDidMount = () => {
    let url = Config['MessagingMicroservice'].replace(/\bapi\b(?!.*?\bapi\b)/, 'notificationHub');
    const hubConnection = new HubConnectionBuilder().withUrl(url).build();

    this.setState({ hubConnection }, () => {
        this.state.hubConnection
            .start()
            .then(() => console.log('Connection started!'))
            .catch(err => console.log('Error while establishing connection :('));

        this.state.hubConnection.on('ReceiveMessage', (userIds) => {
            const usrIds = `${userIds}`;
            if (usrIds.includes(this.state.userId)) {
                this.getNotificationCount(this.state.userId);
            }
        });
    });
};

我正在摆脱错误。

WebSocket connection to 'wss://isambard-dev.capitawfm.co.uk:19081/IsambardServiceFabric/MessagingMicroservice/notificationHub/?id=OcLN9AYHOVp8Hr4t3mPVPA' 
failed: Error during WebSocket handshake: Unexpected response code: 504

https://isambard-dev.capitawfm.co.uk:19081/IsambardServiceFabric/MessagingMicroservice/notificationHub/?id=jcEzEb0coVTp51hQeFlzOw
Error: Failed to start the transport 'ServerSentEvents': Error: Error occurred

我的AspDotNet Core SignalR应用程序在localhost中正常工作，但在Azure中不工作。我不想使用Azure SignalR服务

0 个答案: