发布到 Azure 后的 Azure SignalR 服务 403

Question

我最近开始使用 signalR 试验 .Net Core 6 Blazor 服务器聊天应用程序。我能够让示例应用程序在本地运行。但是，使用已发布的 Azure 应用程序服务将应用程序迁移到 Azure SignalR 服务一直很困难。

我一直收到 403 个被禁止的结果。

我没有找到太多关于使用 .net core 6 和 SignalR 服务的教程。我会欢迎 link 一步步来！

Program.cs

using Microsoft.AspNetCore.ResponseCompression;
using RunOn.Hubs;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Web;
using RunOn.Data;

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.
builder.Services.AddRazorPages();
builder.Services.AddServerSideBlazor();
builder.Services.AddSingleton<WeatherForecastService>();

builder.Services.AddSignalR().AddAzureSignalR();

builder.Services.AddResponseCompression(opts =>
{
    opts.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(
        new[] { "application/octet-stream" });
});

var app = builder.Build();


app.UseResponseCompression();


// Configure the HTTP request pipeline.
if (!app.Environment.IsDevelopment())
{
    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.UseStaticFiles();

app.UseRouting();

app.MapBlazorHub();
app.MapHub<ChatHub>("/chathub");
app.MapFallbackToPage("/_Host");

app.Run();

Index.razr

@page "/"
@using Microsoft.AspNetCore.SignalR.Client
@inject NavigationManager NavigationManager
@inject IJSRuntime JsRuntime
@implements IAsyncDisposable

<PageTitle>Index</PageTitle>

<div class="form-group">
    <label>
        User:
        <input @bind="userInput" />
    </label>
</div>
<div class="form-group">
    <label>
        Message:
        <input @bind="messageInput" size="50" />
    </label>
</div>
<button @onclick="Send" disabled="@(!IsConnected)">Send</button>

<hr>

<ul id="messagesList">
    @foreach (var message in messages)
    {
        <li>@message</li>
    }
</ul>

@code {
    private HubConnection? hubConnection;
    private List<string> messages = new List<string>();
    private string? userInput;
    private string? messageInput;

    protected override async Task OnInitializedAsync()
    {
        hubConnection = new HubConnectionBuilder()
            .WithUrl(NavigationManager.ToAbsoluteUri("/chathub"))
            .Build();

             

        hubConnection.On<string, string>("ReceiveMessage", (user, message) =>
        {
            var encodedMsg = $"{user}: {message}";
            messages.Add(encodedMsg);
            StateHasChanged();
        });

        await hubConnection.StartAsync();
    }

    private async Task Send()
    {
        if (hubConnection is not null)
        {
            await hubConnection.SendAsync("SendMessage", userInput, messageInput);
        }
    }

    public bool IsConnected =>
        hubConnection?.State == HubConnectionState.Connected;

    public async ValueTask DisposeAsync()
    {
        if (hubConnection is not null)
        {
            await hubConnection.DisposeAsync();
        }
    }
}

这是错误： Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware[1] 执行请求时发生未处理的异常。 System.Net.Http.HttpRequestException: 响应状态码不表示成功: 403 (Forbidden).

我不确定我还能提供哪些有助于解决此问题的其他信息。

Answer 1

我想您需要从应用服务配置中启用 Web 套接字功能。

Answer 2

原来这个问题与身份验证有关。我的应用服务启用了身份验证，但我发布的应用目前未使用身份验证。我在应用服务设置和 re-published 中关闭了身份验证（暂时）。现在正在运行。

发布到 Azure 后的 Azure SignalR 服务 403

Azure SignalR Service 403 after publishing to Azure

signalr

blazor

asp.net-core-6.0