MCPACKETS

For more information on varints see: https://wiki.vg/Protocol#VarInt_and_VarLong

Installation

Install this package by running go get -u github.com/Sascha-T/mcpackets

Packet

type Packet struct {
	Bytes  []byte
	Size   int
	Offset int
}

Can be created using:

• func NewPacket_A(arr []byte)
  Creates a new packet from a byte array
• func NewPacket_S(size int)
  Creates a new packet with a byte array of size size filled with 0s

Methods:

• func (p *Packet) WriteByte(r byte)
  Writes one byte and increments offset

• func (p *Packet) ReadByte() byte
  Reads one byte and increments offset

• func (p *Packet) WriteShort(r uint16)
  Writes two bytes (uint16) and increments offset

• func (p *Packet) ReadShort() uint16
  Reads two bytes (uint16) and increments offset

• func (p *Packet) WriteInt(r uint32)
  Writes four byte (uint32) and increments offset

• func (p *Packet) ReadInt() uint32
  Reads four byte (uint32) and increments offset

• func (p *Packet) WriteLong(r uint64)
  Writes eight bytes (uint64) and increments offset

• func (p *Packet) ReadLong() uint64
  Reads eight bytes (uint64) and increments offset

• func (p *Packet) WriteVarInt(r uint)
  Writes a varint and increments offset

• func (p *Packet) ReadVarInt() uint
  Reads a varint and increments offset

• func (p *Packet) WriteString(str string)
  Writes a varint with the size of the string and the string and increments offset

• func (p *Packet) ReadString() string
  Reads a varint then reads a string with size being the read varint

EncryptionHolder

type EncryptionHolder struct {
	LocalBoundCryptoStream cipher.Stream
	RemoteBoundCryptoStream cipher.Stream
}

Can be created using:

• func NewEncryptionHolder(sharedSecret []byte) EncryptionHolder
  Shared secret is the byte array sent by the server encrypted using the client's public key

Methods:

• func (c EncryptionHolder) EncryptPacket(p Packet) []byte
  Encrypts packet p with the outbound AES stream into a byte array

• func (c EncryptionHolder) DecryptPacket(p []byte) Packet
  Decrypts byte array p with the inbound AES stream into a packet