.net core 配置WebSocket

        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }

            var options = new WebSocketOptions{ KeepAliveInterval = TimeSpan.FromSeconds(120), ReceiveBufferSize = 4096};
            app.UseWebSockets(options);

            app.UseDefaultFiles();
            app.UseStaticFiles();
            app.UseHttpsRedirection();
            app.UseMvc();
        }