Question

我正在尝试通过查询字符串访问SignalRHub类上的令牌。这是客户端代码：

const connection = new signalR.HubConnectionBuilder()
    .withUrl($("#url").val(), {
    skipNegotiation: true,
    transport: signalR.HttpTransportType.WebSockets,
    accessTokenFactory: () => {
       token                                         
    }
  })
  .configureLogging(signalR.LogLevel.Trace)
  .build();

Jwt配置：

OnMessageReceived = context =>
{
var accessToken = context.Request.Query["access_token"];
var path = context.HttpContext.Request.Path.Value;

if (!string.IsNullOrEmpty(accessToken) && (path.Equals("/websocket"))
{
 context.Token = accessToken;
}
 return Task.CompletedTask;
}

问题是，当我向我的集线器发出请求时，即使我通过accessTokenFactory传递了accessToken，它也为null。没有查询字符串参数“ access_token”。代码是在docs guide之后编写的。我已经尝试在启动时更改中间件调用，但没有解决。

启动文件：

public void ConfigureServices(IServiceCollection services)
{            
   services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2)
   .AddSessionStateTempDataProvider();

   /*aditional configurations*/

   services.AddSignalR();

   /*more aditional configurations*/

}

public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
   app.UseCors(options =>
   {
    options.WithExposedHeaders("Location");
    options.AllowAnyOrigin();
    options.AllowAnyHeader();
    options.AllowAnyMethod();
    options.AllowCredentials();
   });

   app.UseSignalR(routes =>
   {
    routes.MapHub<SignalRHub>("/websocket");
   });

   app.UseAuthentication();

   app.UseMvc(routes =>
   {
    routes.MapRoute("api", "{controller}/{action}/{id}");
   });

   /*aditional middlewares*/

   app.UseForwardedHeaders(new ForwardedHeadersOptions
   {
    ForwardedHeaders = ForwardedHeaders.XForwardedFor |          
    ForwardedHeaders.XForwardedProto
   });

}

任何帮助都会被重视

Answer 1

看起来您实际上并没有在accessTokenFactory实现中提供令牌。您需要返回令牌值，否则您的HubConnection将无法获取

accessTokenFactory: () => {
   return token                                         
}

SignalR accessTokenFactory不传递令牌来请求查询字符串

1 个答案: