C#推送信息到APNs的方法

本文实例讲述了C#推送信息到APNs的方法。分享给大家供大家参考。具体实现方法如下：

class Program
{
 public static DateTime? Expiration { get; set; }
 public static readonly DateTime DoNotStore = DateTime.MinValue;
 private static readonly DateTime UNIX_EPOCH = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
 private static string DeviceToken = "273eeddaef02192cf4ba5b666453b258f2d2a1ad02f549105fd03fea789d809d";
 public const int DEVICE_TOKEN_BINARY_SIZE = 32;
 public const int DEVICE_TOKEN_STRING_SIZE = 64;
 public const int MAX_PAYLOAD_SIZE = 256;
 private static X509Certificate certificate;
 private static X509CertificateCollection certificates;
 static void Main(string[] args)
 {
  string hostIP = "gateway.sandbox.push.apple.com";//
  int port = 2195;
  string password = "ankejiaoyu";//
  string certificatepath = "aps_developer_identity.p12";//bin/debug
  string p12Filename = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, certificatepath);
  certificate = new X509Certificate2(System.IO.File.ReadAllBytes(p12Filename), password, X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
  certificates = new X509CertificateCollection();
  certificates.Add(certificate);
  TcpClient apnsClient = new TcpClient();
  apnsClient.Connect(hostIP, port);
  SslStream apnsStream = new SslStream(apnsClient.GetStream(), false, new RemoteCertificateValidationCallback(validateServerCertificate), new LocalCertificateSelectionCallback(selectLocalCertificate));
  try
  {
   //APNs已不支持SSL 3.0
   apnsStream.AuthenticateAsClient(hostIP, certificates, System.Security.Authentication.SslProtocols.Tls, false);
  }
  catch (System.Security.Authentication.AuthenticationException ex)
  {
   Console.WriteLine("error+"+ex.Message);
  }
  if (!apnsStream.IsMutuallyAuthenticated)
  {
   Console.WriteLine("error:Ssl Stream Failed to Authenticate！");
  }
  if (!apnsStream.CanWrite)
  {
   Console.WriteLine("error:Ssl Stream is not Writable!");
  }
  Byte[] message = ToBytes();
  apnsStream.Write(message);
 }
 public static byte[] ToBytes()
 {
  // Without reading the response which would make any identifier useful, it seems silly to
  // expose the value in the object model, although that would be easy enough to do. For
  // now we'll just use zero.
  int identifier = 0;
  byte[] identifierBytes = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(identifier));
  // APNS will not store-and-forward a notification with no expiry, so set it one year in the future
  // if the client does not provide it.
  int expiryTimeStamp = -1;//过期时间戳
  if (Expiration != DoNotStore)
  {
   //DateTime concreteExpireDateUtc = (Expiration ?? DateTime.UtcNow.AddMonths(1)).ToUniversalTime();
   DateTime concreteExpireDateUtc = (Expiration ?? DateTime.UtcNow.AddSeconds(20)).ToUniversalTime();
   TimeSpan epochTimeSpan = concreteExpireDateUtc - UNIX_EPOCH;
   expiryTimeStamp = (int)epochTimeSpan.TotalSeconds;
  }
  byte[] expiry = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(expiryTimeStamp));
  byte[] deviceToken = new byte[DeviceToken.Length / 2];
  for (int i = 0; i < deviceToken.Length; i++)
   deviceToken[i] = byte.Parse(DeviceToken.Substring(i * 2, 2), System.Globalization.NumberStyles.HexNumber);
  if (deviceToken.Length != DEVICE_TOKEN_BINARY_SIZE)
  {
   Console.WriteLine("Device token length error！");
  }
  byte[] deviceTokenSize = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(Convert.ToInt16(deviceToken.Length)));
  string str = "{\"aps\":{\"alert\":\"这是测试消息！！\",\"badge\":1,\"sound\":\"anke.mp3\"}}";
  byte[] payload = Encoding.UTF8.GetBytes(str);
  byte[] payloadSize = BitConverter.GetBytes(IPAddress.HostToNetworkOrder(Convert.ToInt16(payload.Length)));
  List<byte[]> notificationParts = new List<byte[]>();
  //1 Command
  notificationParts.Add(new byte[] { 0x01 }); // Enhanced notification format command
  notificationParts.Add(identifierBytes);
  notificationParts.Add(expiry);
  notificationParts.Add(deviceTokenSize);
  notificationParts.Add(deviceToken);
  notificationParts.Add(payloadSize);
  notificationParts.Add(payload);
  return BuildBufferFrom(notificationParts);
 }
 private static byte[] BuildBufferFrom(IList<byte[]> bufferParts)
 {
  int bufferSize = 0;
  for (int i = 0; i < bufferParts.Count; i++)
   bufferSize += bufferParts[i].Length;
  byte[] buffer = new byte[bufferSize];
  int position = 0;
  for (int i = 0; i < bufferParts.Count; i++)
  {
   byte[] part = bufferParts[i];
   Buffer.BlockCopy(bufferParts[i], 0, buffer, position, part.Length);
   position += part.Length;
  }
  return buffer;
 }
 private static bool validateServerCertificate(object sender, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
 {
  return true; // Dont care about server's cert
 }
 private static X509Certificate selectLocalCertificate(object sender, string targetHost, X509CertificateCollection localCertificates,
  X509Certificate remoteCertificate, string[] acceptableIssuers)
 {
  return certificate;
 }
}

希望本文所述对大家的C#程序设计有所帮助。