private void WriteAttributeContentLength(int attributeContentLength, Span <byte> bytes)
{
if (attributeContentLength > ushort.MaxValue)
{
throw new ArgumentOutOfRangeException("Attribute length is too long");
}
NetworkBitConverter.WriteBytes(bytes.Slice(2, 2), (ushort)attributeContentLength);
}
private static StunIPEndPoint CreateEndPoint(ReadOnlyMemory <byte> address, ReadOnlyMemory <byte> port)
{
return(new StunIPEndPoint(address, NetworkBitConverter.ToUInt16(port.Span)));
}
private static bool IsContentLengthValid(ReadOnlyMemory <byte> bytes)
{
return(StunMessageHeaderLength + NetworkBitConverter.ToUInt16(bytes.Span.Slice(2, 2)) <= bytes.Length);
}
private static ReadOnlyMemory <byte> SliceAttributes(ReadOnlyMemory <byte> bytes)
{
return(bytes.Slice(StunMessageHeaderLength, NetworkBitConverter.ToUInt16(bytes.Span.Slice(2, 2))));
}
private StunMessage(ReadOnlyMemory <byte> bytes)
{
Type = new StunMessageType(NetworkBitConverter.ToUInt16(bytes.Span.Slice(0, 2)));
TransactionId = new StunTransactionId(bytes.Slice(8, 12));
Attributes = new StunAttributes(SliceAttributes(bytes));
}
private void WriteAttributeType(short attributeType, Span <byte> bytes)
{
NetworkBitConverter.WriteBytes(bytes.Slice(0, 2), attributeType);
}
private void WriteType(Span <byte> bytes)
{
NetworkBitConverter.WriteBytes(bytes.Slice(0, 2), type);
}
