private static byte[] Encode(String imei, bool useSerialNo, int serialNo, byte[] command, byte[] content, int lenth)
{
MemoryStream memoryStream = new MemoryStream();
try
{
memoryStream.Write(command, 0, command.Length);
memoryStream.Write(new byte[] { 0x00, (byte)lenth }, 0, 2);
if (useSerialNo)
{
memoryStream.Write(BytesUtils.Short2Bytes(serialNo), 0, 2);
}
else
{
memoryStream.Write(new byte[] { 0x00, 0x01 }, 0, 2);
}
byte[] imeiBytes = EncodeImei(imei);
memoryStream.Write(imeiBytes, 0, imeiBytes.Length);
memoryStream.Write(content, 0, content.Length);
return(memoryStream.ToArray());
}
finally
{
memoryStream.Close();
}
}
private static byte[] Encode(String imei, bool useSerialNo, int serialNo, byte[] command, byte protocol, byte[] content)
{
MemoryStream memoryStream = new MemoryStream();
try
{
memoryStream.Write(command, 0, command.Length);
int packageSize = Math.Min(0x10, 32767);
memoryStream.Write(new byte[] { 0x00, (byte)packageSize }, 0, 2);
if (useSerialNo)
{
memoryStream.Write(BytesUtils.Short2Bytes(serialNo), 0, 2);
}
else
{
memoryStream.Write(new byte[] { 0x00, 0x01 }, 0, 2);
}
byte[] imeiBytes = EncodeImei(imei);
memoryStream.Write(imeiBytes, 0, imeiBytes.Length);
memoryStream.WriteByte(protocol);
memoryStream.Write(content, 0, content.Length);
return(memoryStream.ToArray());
}
finally
{
memoryStream.Close();
}
}
public static string Decode(byte[] bytes, int index)
{
if (bytes != null && index > 0 && (bytes.Length - index) >= 8)
{
string str = BytesUtils.Bytes2HexString(bytes, index);
return(str.Substring(1, 15));
}
throw new ArgumentException("invalid bytes length & index!");
}
public static DateTime getGTM0Date(byte[] bytes, int startIndex)
{
String datetime = BytesUtils.GetDateStr(bytes, startIndex);
int year = Convert.ToInt32(datetime.Substring(0, 4));
int month = Convert.ToInt32(datetime.Substring(4, 2));
int day = Convert.ToInt32(datetime.Substring(6, 2));
int hour = Convert.ToInt32(datetime.Substring(8, 2));
int minutes = Convert.ToInt32(datetime.Substring(10, 2));
int seconds = Convert.ToInt32(datetime.Substring(12, 2));
return(new DateTime(year, month, day, hour, minutes, seconds, DateTimeKind.Utc));
}
private static byte[] EncodeImei(String imei)
{
return(BytesUtils.HexString2Bytes("0" + imei));
}
public static string GetDateStr(byte[] data, int startIndex)
{
byte[] dateBytes = new byte[6];
Array.Copy(data, startIndex, dateBytes, 0, 6);
return("20" + BytesUtils.Bytes2HexString(dateBytes, 0));
}