C#•2w ago

Adding middleware

Hi! I face an issue whilst using the azure serverless signalr with azure function as bindings. When Signalr is running using websockets the authorization header is null and i must use the query to retrieve the token. How can I register it in my function? this is my Program.cs

var builder = FunctionsApplication.CreateBuilder(args);

builder.Services.AddAuthentication().AddBearerToken();
builder.Services.AddAuthorization();
builder.Services.Configure<KestrelServerOptions>(options =>
{
    options.AllowSynchronousIO = true;
});
builder.Services.AddServerlessHub<Functions>();
builder.Build().Run();

var builder = FunctionsApplication.CreateBuilder(args);

builder.Services.AddAuthentication().AddBearerToken();
builder.Services.AddAuthorization();
builder.Services.Configure<KestrelServerOptions>(options =>
{
    options.AllowSynchronousIO = true;
});
builder.Services.AddServerlessHub<Functions>();
builder.Build().Run();

essentially i'd somehow need to register this, but make it work for the function

public class QueryStringAuthenticationMiddleware
{
    private readonly RequestDelegate _next;

    public QueryStringAuthenticationMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        if (context.Request.Headers["Authorization"].Count == 0)
        {
            var token = context.Request.Query["auth_token"];
            if (!string.IsNullOrEmpty(token))
            {
                context.Request.Headers["Authorization"] = $"Bearer {token}";
            }
        }

        await _next(context);
    }
}

public class QueryStringAuthenticationMiddleware
{
    private readonly RequestDelegate _next;

    public QueryStringAuthenticationMiddleware(RequestDelegate next)
    {
        _next = next;
    }

    public async Task InvokeAsync(HttpContext context)
    {
        if (context.Request.Headers["Authorization"].Count == 0)
        {
            var token = context.Request.Query["auth_token"];
            if (!string.IsNullOrEmpty(token))
            {
                context.Request.Headers["Authorization"] = $"Bearer {token}";
            }
        }

        await _next(context);
    }
}

1 Reply

Saber•2w ago

https://learn.microsoft.com/en-us/azure/azure-functions/dotnet-isolated-process-guide?tabs=ihostapplicationbuilder%2Cwindows#middleware

Guide for running C# Azure Functions in an isolated worker process

Learn how to use the .NET isolated worker model to run your C# functions in Azure, which lets you run your functions on currently supported versions of .NET and .NET Framework.

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Adding middleware