我正在asp.net core 2.2版本下的asp.net core signalr 1.1.0上工作。我想要 为Web客户端和移动客户端提出跨域请求。当我从javascript客户端发送请求时，此请求被阻止，并且在错误显示之下，（索引）：1来自'https://localhost:44373/chatHub/negotiate?token=12'的'https://localhost:44381'访问XMLHttpRequest已被CORS策略阻止：对预检请求的响应未通过访问控制检查：当请求的凭据模式为“include”时，响应中的“Access-Control-Allow-Origin”标头的值不能是通配符“*”。 XMLHttpRequest发起的请求的凭据模式由withCredentials属性控制。
我的Javascript客户端代码
var connection = new signalR.HubConnectionBuilder().withUrl("https://localhost:44373/chatHub?token="+12).build();
信号器核心服务启动类代码
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.Configure<CookiePolicyOptions>(options =>
{
// This lambda determines whether user consent for non-essential cookies is needed for a given request.
options.CheckConsentNeeded = context => true;
options.MinimumSameSitePolicy = SameSiteMode.None;
});
services.AddCors(options =>
{
options.AddPolicy("CorsPolicy",
builder => builder.AllowAnyOrigin()/*WithOrigins("https://localhost:44381")*/
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials());
});
services.AddSignalR();
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
//services.AddCors();
}
// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
else
{
app.UseExceptionHandler("/Error");
// The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
app.UseHsts();
}
app.UseHttpsRedirection();
app.UseCors("CorsPolicy");
app.UseSignalR(routes =>
{
routes.MapHub<ChatHub>("/chatHub");
});
//app.UseStaticFiles();
//app.UseCookiePolicy();
app.UseMvc();
}
builder.AllowAnyOrigin() its not working
builder => builder.WithOrigins（“https://localhost:44381”）它的工作原理，但这是针对这个来源的，我想让AllowAnyOrigin（）??
我这样做了
在顶部配置服务
services.AddCors();
并在Configure方法中
public class Startup
{
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
.AddDbContext<ChatContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));
services.Configure<FormOptions>(options =>
{
options.MultipartBodyLengthLimit = 60000000;
});
services.AddMvc().AddJsonOptions(options =>
{
options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
});
services.AddMvcCore()
.AddAuthorization()
.AddJsonOptions(options =>
{
options.SerializerSettings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
options.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
});
var identityServerAuthOptions = Configuration.GetSection("Identity").Get<IdentityServerAuthenticationOptions>();
services.AddAuthentication("Bearer")
.AddIdentityServerAuthentication(options =>
{
options.Authority = identityServerAuthOptions.Authority;
options.RequireHttpsMetadata = identityServerAuthOptions.RequireHttpsMetadata;
options.ApiName = identityServerAuthOptions.ApiName;
});
var settings = new JsonSerializerSettings();
settings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
settings.ContractResolver= new CamelCasePropertyNamesContractResolver();
services.AddSignalR()
.AddJsonProtocol(options => {
options.PayloadSerializerSettings = settings;
});
services.AddTransient<IUserService, UserService>();
services.AddCors();
}
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
{
loggerFactory.AddConsole(Configuration.GetSection("Logging"));
loggerFactory.AddDebug();
//Data.AddData(app.ApplicationServices.GetService<ChatContext>());
app.Use(async (context, next) =>
{
if (string.IsNullOrWhiteSpace(context.Request.Headers["Authorization"]))
{
if (context.Request.QueryString.HasValue)
{
var token = context.Request.QueryString.Value.Split('&').SingleOrDefault(x => x.Contains("authorization"))?.Split('=')[1];
if (!string.IsNullOrWhiteSpace(token))
{
context.Request.Headers.Add("Authorization", new[] { $"Bearer {token}" });
}
}
}
await next.Invoke();
});
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
// app.UseBrowserLink();
}
else
{
app.UseExceptionHandler("/Home/Error");
}
app.UseStaticFiles();
app.UseAuthentication();
app.UseCors(x => x.AllowAnyOrigin().AllowAnyHeader().AllowAnyMethod().AllowCredentials());
app.UseSignalR(config =>
{
config.MapHub<UserHub>("/UsersHub");
});
app.UseMvc(routes =>
{
routes.MapRoute(
name: "default",
template: "{controller=Home}/{action=Index}/{id?}");
routes.MapSpaFallbackRoute("spa-fallback", new { controller = "Home", action = "Index" });
});
}
}
app.UseCors(builder =>
builder.AllowAnyOrigin()
.AllowAnyMethod()
.AllowAnyHeader()
);
整个代码可以在这里找到。这曾经对我很好。我最近没有打开它