/// <summary>
/// Get full url to download NGrok on this platform
/// </summary>
/// <exception cref="NGrokUnsupportedException">Throws if platform not supported by NGrok</exception>
/// <returns></returns>
private string GetDownloadPath()
{
const string cdn = "https://bin.equinox.io";
const string cdnPath = "c/4VmDzA7iaHb/NGrok-stable";
return($"{cdn}/{cdnPath}-{RuntimeExtensions.GetOsArchitectureString()}.zip");
}
/// <summary>
/// Download NGrok from equinox.io CDN
/// </summary>
/// <exception cref="NGrokUnsupportedException">Throws if platform not supported by NGrok</exception>
/// <exception cref="HttpRequestException">Throws if failed to download from CDN</exception>
/// <returns></returns>
public async Task DownloadExecutableAsync(CancellationToken cancellationToken)
{
var downloadUrl = GetDownloadPath();
var fileName = $"{RuntimeExtensions.GetOsArchitectureString()}.zip";
var filePath = $"{Path.Combine(Directory.GetCurrentDirectory(), fileName)}";
if (File.Exists(filePath))
{
return;
}
var downloadResponse = await _httpClient.GetAsync(downloadUrl, cancellationToken);
downloadResponse.EnsureSuccessStatusCode();
// Download Zip
var downloadStream = await downloadResponse.Content.ReadAsStreamAsync();
await using (var writer = File.Create(filePath))
{
await downloadStream.CopyToAsync(writer, cancellationToken);
}
// Extract zip
ZipFile.ExtractToDirectory(filePath, Directory.GetCurrentDirectory());
if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
GrantNGrokFileExecutablePermissions();
}
}