public static STUNHeader ParseSTUNHeader(byte[] buffer)
{
if (buffer != null && buffer.Length > 0 && buffer.Length >= STUN_HEADER_LENGTH)
{
STUNHeader stunHeader = new STUNHeader();
UInt16 stunTypeValue = BitConverter.ToUInt16(buffer, 0);
UInt16 stunMessageLength = BitConverter.ToUInt16(buffer, 2);
if (BitConverter.IsLittleEndian)
{
stunTypeValue = Utility.ReverseEndian(stunTypeValue);
stunMessageLength = Utility.ReverseEndian(stunMessageLength);
}
stunHeader.MessageType = STUNMessageTypes.GetSTUNMessageTypeForId(stunTypeValue);
stunHeader.MessageLength = stunMessageLength;
//stunHeader.TransactionId = BitConverter.ToString(buffer, 4, TRANSACTION_ID_LENGTH);
Buffer.BlockCopy(buffer, 4, stunHeader.TransactionId, 0, TRANSACTION_ID_LENGTH);
return(stunHeader);
}
return(null);
}
public static STUNMessage ParseSTUNMessage(byte[] buffer, int bufferLength)
{
if (buffer != null && buffer.Length > 0 && buffer.Length >= bufferLength)
{
STUNMessage stunMessage = new STUNMessage();
stunMessage.Header = STUNHeader.ParseSTUNHeader(buffer);
if (stunMessage.Header.MessageLength > 0)
{
stunMessage.Attributes = STUNAttribute.ParseMessageAttributes(buffer, STUNHeader.STUN_HEADER_LENGTH, bufferLength);
}
return(stunMessage);
}
return(null);
}
public STUNMessage(STUNMessageTypesEnum stunMessageType)
{
Header = new STUNHeader(stunMessageType);
}