/// <summary>
/// Gets the optional parameter string associated with
/// the given tag.
/// </summary>
/// <param name="tag">The tag in TLV.</param>
/// <returns>The optional parameter string, or null if not found.</returns>
public string GetOptionalParamString(Tag tag)
{
var tlv = vTlv.GetTlvByTag(tag);
if (tlv == null)
{
return(null);
}
return(vSmppEncodingService.GetCStringFromBytes(tlv.RawValue));
}
private static string BytesToString(byte[] value, SmppEncodingService encodingService)
{
try
{
if (encodingService != null)
{
return(encodingService.GetCStringFromBytes(value));
}
return(BytesToStringHex(value));
}
catch (Exception)
{
return(BytesToStringHex(value));
}
}
internal static string DecodeCString(ByteBuffer buffer, SmppEncodingService smppEncodingService)
{
//Get next terminating null value
int pos = buffer.Find(0x00);
if (pos < 0)
{
throw new PDUFormatException("CString type field could not be read. The terminating charactor is missing");
}
try { string value = smppEncodingService.GetCStringFromBytes(buffer.Remove(pos + 1)); return(value); }
catch (ArgumentException ex)
{
//ByteBuffer.Remove(int count) throw ArgumentException if the buffer length is less than count
//This is the indication that the amount of bytes required could not be met
//We wrap this exception as NotEnoughtBytesException exception
throw new NotEnoughBytesException("PDU requires more bytes than supplied", ex);
}
}
