C # push information to APNs,

C # push information to APNs,
Implementation and Discussion of iPhone message push mechanism
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 = "token"; 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 = "success"; // int port = 2195; string password = "ankejiaoyu"; // string certificatepath = "aps_developer_identity.p12"; // bin/debug string p12Filename = System. IO. path. combine (AppDomain. currentDomain. B AseDirectory, 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 does not support 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 wocould make any identifier useful, it seems silly to // expose the value in the object model, although that wocould be easy enough to do. for // now we'll just use zero. int identifier = 0; byte [] identifierBytes = BitConverter. getBytes (IPAddress. hostToNetworkOrder (iden Tifier); // 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; // Expiration time stamp 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 \ ": \" this is the test message !! \ ", \" Badge \ ": 1, \" sound \ ": \" ankeapps\ "}"; byte [] payload = Encoding. UTF8.GetBytes (str); byte [] payloadSize = BitConverter. getBytes (IPAddress. hostToNetworkOrder (Convert. toInt16 (payload. length); List <byte []> icationicationparts = new List <byte []> (); // 1 Command notificationParts. add (new byte [] {0x01}); // Enhanced notification format command icationicationparts. add (identifierBytes); icationicationparts. add (expiry); icationicationparts. add (deviceTokenSize); icationicationparts. add (deviceToken); icationicationparts. add (payloadSize); icationicationparts. add (payload); return BuildBufferFrom (icationicationparts);} 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 ‑selectlocalcertificate (object sender, string targetHost, using localCertificates, using remoteCertificate, string [] acceptableIssuers) {return certificate ;}

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From Weizhi note (Wiz)