private ushort readVariableLengthUShort(ByteArrayReaderWriter reader)
{
ushort num = 0;
byte b = reader.ReadByte();
num = (ushort)(num | (ushort)(b & 0x7F));
if ((b & 0x80) != 0)
{
num = (ushort)(num | (ushort)(reader.ReadByte() << 7));
}
return(num);
}
private ushort readVariableLengthUShort(ByteArrayReaderWriter reader)
{
ushort val = 0;
byte b1 = reader.ReadByte();
val |= (ushort)(b1 & 0x7F);
if ((b1 & 0x80) != 0)
{
val |= (ushort)(reader.ReadByte() << 7);
}
return(val);
}
public void ReadData(ByteArrayReaderWriter stream)
{
byte addressVal = stream.ReadByte();
// if address type is not 0 or 1, data is not valid
if (addressVal != 0 && addressVal != 1)
{
throw new FormatException();
}
this.AddressType = (NetcodeAddressType)addressVal;
IPAddress ip = null;
if (this.AddressType == NetcodeAddressType.IPv4)
{
stream.ReadBytesIntoBuffer(tempIPV4, 4);
ip = new IPAddress(tempIPV4);
}
else
{
stream.ReadBytesIntoBuffer(tempIPV6, 16);
ip = new IPAddress(tempIPV6);
}
var port = stream.ReadUInt16();
this.Endpoint = new IPEndPoint(ip, port);
}
/// <summary>
/// Reads a packet from the stream.
/// If packet is a connection request packet, stream read position lies at version info
/// Otherwise, stream read position lies at packet-specific data
/// </summary>
public void Read(ByteArrayReaderWriter stream)
{
byte prefixByte = stream.ReadByte();
this.ReadSequenceByte = prefixByte;
// read in packet type
int packetTypeNibble = prefixByte & 0x0F;
if (packetTypeNibble >= 7)
{
this.PacketType = NetcodePacketType.InvalidPacket;
return;
}
else
{
this.PacketType = (NetcodePacketType)packetTypeNibble;
}
// read in the sequence number
// high 4 bits of prefix byte are number of bytes used to encode sequence number
if (this.PacketType != NetcodePacketType.ConnectionRequest)
{
int numSequenceBytes = (prefixByte >> 4);
// num sequence bytes is between 1 and 8.
// if it is outside this range, we have an invalid packet
if (numSequenceBytes < 1 || numSequenceBytes > 8)
{
this.PacketType = NetcodePacketType.InvalidPacket;
return;
}
ulong sequenceNumber = 0;
for (int i = 0; i < numSequenceBytes; i++)
{
sequenceNumber |= ((ulong)stream.ReadByte() << (i * 8));
}
this.SequenceNumber = sequenceNumber;
}
}
