gistfile1.cs

                   switch (row.Platform)
                    {
                        case "iOS":
                            if ((row.DeviceId.Length & 1) != 0)
                                continue; // deviceid is odd length; what sorcery is this hex that has half a byte?

                            string payload = String.Format("{{'aps':{{'alert':'This is a push notification'}},'envId':'{0}'}}", envId);

                            BinaryWriter bw = new BinaryWriter(PushConnection);
                            bw.Write((byte)0);

                            bw.Write((byte)(row.DeviceId.Length >> 8));
                            bw.Write((byte)row.DeviceId.Length);
                            bw.Write(HexStringToByteArray(row.DeviceId));

                            bw.Write((byte)(payload.Length >> 8));
                            bw.Write((byte)payload.Length);
                            bw.Write(payload.ToCharArray(), 0, payload.Length);
                            break;