Sonic.exe Download Fixed -

private static readonly HttpClient _http = new HttpClient() // Timeout can be tuned – 5 minutes is a sensible default. Timeout = TimeSpan.FromMinutes(5) ;

public MainForm() InitializeComponent(); btnDownload.Click += BtnDownload_Click;

while ((read = await contentStream.ReadAsync(buffer.AsMemory(0, buffer.Length), ct)) > 0) await fileStream.WriteAsync(buffer.AsMemory(0, read), ct); totalRead += read; progress?.Report((totalRead, totalBytes)); sonic.exe download

lblStatus.Text = $"✅ Download complete: savePath"; catch (Exception ex) lblStatus.Text = $"❌ Error: ex.Message"; finally btnDownload.Enabled = true;

private const string DOWNLOAD_URL = "https://example.com/path/to/sonic.exe"; private const string EXPECTED_SHA256 = "0123456789abcdef..."; // 64‑hex chars private static readonly HttpClient _http = new HttpClient()

if (!string.IsNullOrWhiteSpace(expectedHash) && !computed.Equals(expectedHash, StringComparison.OrdinalIgnoreCase)) throw new InvalidDataException( $"Hash mismatch! Expected expectedHash, got computed.");

await using var contentStream = await response.Content.ReadAsStreamAsync(ct); await using var fileStream = new FileStream( destinationFilePath, existingBytes > 0 ? FileMode.Append : FileMode.Create, FileAccess.Write, FileShare.None, bufferSize: 81920, useAsync: true); FileMode

var savePath = Path.Combine( Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), "Downloads", "sonic.exe");