C#•4y ago

❔ ASP.NET Core Middleware running only once

Hello!

I have a custom middleware that runs only once and isn't running on every request.
When I put breakpoint into my pipeline or into my custom middleware it won't break or run.
Any ideas why?

var builder = WebApplication.CreateBuilder(args);

// Other stuff

builder.Services.AddCurUserCookie();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseForwardedHeaders();
if (!app.Environment.IsDevelopment())
    app.UseExceptionHandler("/Error");

app.UseRequestLogger();

app.UseStaticFiles();

app.UseCors();
app.UseAuthentication();
app.UseAuthorization();

// My custom middleware
app.UseCurUserCookie();

app.MapControllers();

app.Run();

var builder = WebApplication.CreateBuilder(args);

// Other stuff

builder.Services.AddCurUserCookie();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseForwardedHeaders();
if (!app.Environment.IsDevelopment())
    app.UseExceptionHandler("/Error");

app.UseRequestLogger();

app.UseStaticFiles();

app.UseCors();
app.UseAuthentication();
app.UseAuthorization();

// My custom middleware
app.UseCurUserCookie();

app.MapControllers();

app.Run();

var builder = WebApplication.CreateBuilder(args);

// Other stuff

builder.Services.AddCurUserCookie();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseForwardedHeaders();
if (!app.Environment.IsDevelopment())
    app.UseExceptionHandler("/Error");

app.UseRequestLogger();

app.UseStaticFiles();

app.UseCors();
app.UseAuthentication();
app.UseAuthorization();

// My custom middleware
app.UseCurUserCookie();

app.MapControllers();

app.Run();

var builder = WebApplication.CreateBuilder(args);

// Other stuff

builder.Services.AddCurUserCookie();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseForwardedHeaders();
if (!app.Environment.IsDevelopment())
    app.UseExceptionHandler("/Error");

app.UseRequestLogger();

app.UseStaticFiles();

app.UseCors();
app.UseAuthentication();
app.UseAuthorization();

// My custom middleware
app.UseCurUserCookie();

app.MapControllers();

app.Run();

public interface ICurUserCookie
{
    int CurUserId { get; set; }
}

public class CurUserCookie : ICurUserCookie
{
    public int CurUserId { get; set; }
}

public static class CurUserCookieEx
{
    public static void AddCurUserCookie(this IServiceCollection services)
    {
        services.AddScoped<ICurUserCookie, CurUserCookie>();
    }

    public static void UseCurUserCookie(this IApplicationBuilder app)
    {
        app.Use(async (ctx, next) =>
        {
            // Do stuff here

            await next();
        });
    }
}

public interface ICurUserCookie
{
    int CurUserId { get; set; }
}

public class CurUserCookie : ICurUserCookie
{
    public int CurUserId { get; set; }
}

public static class CurUserCookieEx
{
    public static void AddCurUserCookie(this IServiceCollection services)
    {
        services.AddScoped<ICurUserCookie, CurUserCookie>();
    }

    public static void UseCurUserCookie(this IApplicationBuilder app)
    {
        app.Use(async (ctx, next) =>
        {
            // Do stuff here

            await next();
        });
    }
}

public interface ICurUserCookie
{
    int CurUserId { get; set; }
}

public class CurUserCookie : ICurUserCookie
{
    public int CurUserId { get; set; }
}

public static class CurUserCookieEx
{
    public static void AddCurUserCookie(this IServiceCollection services)
    {
        services.AddScoped<ICurUserCookie, CurUserCookie>();
    }

    public static void UseCurUserCookie(this IApplicationBuilder app)
    {
        app.Use(async (ctx, next) =>
        {
            // Do stuff here

            await next();
        });
    }
}

public interface ICurUserCookie
{
    int CurUserId { get; set; }
}

public class CurUserCookie : ICurUserCookie
{
    public int CurUserId { get; set; }
}

public static class CurUserCookieEx
{
    public static void AddCurUserCookie(this IServiceCollection services)
    {
        services.AddScoped<ICurUserCookie, CurUserCookie>();
    }

    public static void UseCurUserCookie(this IApplicationBuilder app)
    {
        app.Use(async (ctx, next) =>
        {
            // Do stuff here

            await next();
        });
    }
}

Kouhai•11/10/22, 2:11 PM

Requests aren't reaching controllers as well, right?

SebastianOP•11/10/22, 2:11 PM

Requests are reaching controllers

SebastianOP•11/10/22, 2:12 PM

It's just that the pipeline breaks me only once - at the start of the app.

SebastianOP•11/10/22, 2:12 PM

It doesn't break me when request is happening - for example I have dependency injection for CurUserCookie it doesnt run before it reaches the Controller - hmaking my CurUser null.

Kouhai•11/10/22, 2:14 PM

Okay so reaching controllers means the middleware is getting executed, where are your breakpoints set?

SebastianOP•11/10/22, 2:15 PM

SebastianOP•11/10/22, 2:15 PM

Or even if I set them anywhre in my pipeline they will break only after starting the app first time.

Kouhai•11/10/22, 2:17 PM

Have you tried adding any logging statements inside the middleware?
I'm not really sure why the breakpoint isn't getting hit

SebastianOP•11/10/22, 2:19 PM

Restarting VS fixed the issue for some reason (Even though I restarted before). Weird, but thanks

Accord•11/22/22, 9:10 PM

Looks like nothing has happened here. I will mark this as stale and this post will be archived until there is new activity.

❔ ASP.NET Core Middleware running only once

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