public void ClearJwtToken(ApnSettings settings)
{
var matching = GetJwtToken(settings);
if (matching != null)
{
tokens.TryRemove(matching, out _);
}
}
/// <summary>
/// Apple push notification sender constructor
/// </summary>
/// <param name="settings">Apple Push Notification settings</param>
/// <param name="http">HTTP client instance</param>
public ApnSender(ApnSettings settings, HttpClient http)
{
this.settings = settings ?? throw new ArgumentNullException(nameof(settings));
this.http = http ?? throw new ArgumentNullException(nameof(http));
if (http.BaseAddress == null)
{
http.BaseAddress = new Uri(servers[settings.ServerType]);
}
}
public string GetJwtToken(ApnSettings settings)
{
var(token, date) = tokens.GetOrAdd(settings.AppBundleIdentifier, _ => new Tuple <string, DateTime>(CreateJwtToken(settings), DateTime.UtcNow));
if (date < DateTime.UtcNow.AddMinutes(-tokenExpiresMinutes))
{
tokens.TryRemove(settings.AppBundleIdentifier, out _);
return(GetJwtToken(settings));
}
return(token);
}
public string CreateJwtToken(ApnSettings settings)
{
var header = JsonHelper.Serialize(new { alg = "ES256", kid = CleanP8Key(settings.P8PrivateKeyId) });
var payload = JsonHelper.Serialize(new { iss = settings.TeamId, iat = ToEpoch(DateTime.UtcNow) });
var headerBase64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(header));
var payloadBasae64 = Convert.ToBase64String(Encoding.UTF8.GetBytes(payload));
var unsignedJwtData = $"{headerBase64}.{payloadBasae64}";
var unsignedJwtBytes = Encoding.UTF8.GetBytes(unsignedJwtData);
using var dsa = ECDsa.Create();
dsa.ImportPkcs8PrivateKey(Convert.FromBase64String(CleanP8Key(settings.P8PrivateKey)), out _);
var signature = dsa.SignData(unsignedJwtBytes, 0, unsignedJwtBytes.Length, HashAlgorithmName.SHA256);
return($"{unsignedJwtData}.{Convert.ToBase64String(signature)}");
}
/// <summary>
/// Apple push notification sender constructor
/// </summary>
/// <param name="settings">Apple Push Notification settings</param>
public ApnSender(ApnSettings settings, HttpClient http)
{
this.settings = settings ?? throw new ArgumentNullException(nameof(settings));
this.http = http ?? throw new ArgumentNullException(nameof(http));
}
