I’m currently working on a app that needs for me to be able to download osu beatmap files using there id, I tried just copying the link to the download aka for me it would be
https://osu.ppy.sh/beatmapsets/1012634/download and then just sending a web request to it and download the response but it didn’t quite work it made a 200kb file that’s not the beatmap

also I found this GitHub osu! API issues https://github.com/ppy/osu-api/issues/288 saying to add the cookies but I am not sure how to get that to work in c#.

the code i tried:

using System;
using System.IO;
using System.Net.Http;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        string downloadUrl = "https://osu.ppy.sh/beatmapsets/1012634/download";

        using (HttpClient client = new HttpClient())
        {
            HttpResponseMessage response = await client.GetAsync(downloadUrl);

            if (response.IsSuccessStatusCode)
            {
                // Read the response content as a byte array
                byte[] fileBytes = await response.Content.ReadAsByteArrayAsync();

                // Save the downloaded file
                string filePath = @"C:UserscheadDownloadsmap.osz";
                File.WriteAllBytes(filePath, fileBytes);

                Console.WriteLine($"File downloaded successfully to: {filePath}");
            }
            else
            {
                Console.WriteLine($"Failed to download file. Status code: {response.StatusCode}");
            }

        }
        Console.WriteLine("That's it!");
        Console.ReadKey();
    }
}

i tried using the osu! API but it doesn’t seem like there is any endpoint for downloading a beatmap

i also tried what Download file using webclient
said to do but it didn’t work

here is the code i tried:

using System;
using System.IO;
using System.Net;
using System.Threading.Tasks;

class Program
{
    static void Main(string[] args)
    {
        WebClient wc = new WebClient();
        string strFile = Path.Combine(Directory.GetCurrentDirectory(), "downloaded_file.osz");

        wc.Credentials = new System.Net.NetworkCredential("me", "pw");
        wc.Headers.Add("User-Agent", "my user agent");
        wc.DownloadFile("https://osu.ppy.sh/beatmapsets/1012634/download", strFile);
        Console.WriteLine("That's it!");
        Console.ReadKey();
    }
}

i also tried this (it didn’t work):

using System.Net;

class Program
{
    static void Main(string[] args)
    {
        using (var client = new HttpClient())
        {
            using (var stream = client.GetStreamAsync("https://osu.ppy.sh/beatmapsets/1012634/download"))
            {
                using (var FileStream = new FileStream("map.osz", FileMode.OpenOrCreate))
                {
                    stream.Result.CopyTo(FileStream);
                    Console.WriteLine($"Code Returned 0, saved to map.osz in the dir");
                }
            }

        }
        Console.ReadKey();
    }

}

any help would be greatly appreciated.