public static byte[] Unchoke()
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(1); //Length
rs.WriteByte(1); //ID
return(rs.GetByteArray());
}
public static byte[] NotInterested()
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(1); //Length
rs.WriteByte(3); //ID
return(rs.GetByteArray());
}
public static byte[] BitField(byte[] bitfield)
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(1 + bitfield.Length); //Length
rs.WriteByte(5); //ID
rs.WriteByteArray(bitfield); //Payload: Bitfield
return(rs.GetByteArray());
}
public static byte[] Have(int piece)
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(5); //Length
rs.WriteByte(4); //ID
rs.WriteInt(piece); //Payload: Piece ID
return(rs.GetByteArray());
}
public static byte[] Port(short listen_port) //Used for DHT, currently unimplemented
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(3); //Length
rs.WriteByte(9); //ID
rs.WriteShort(listen_port);
return(rs.GetByteArray());
}
public static byte[] Cancel(int pieceid, int piece_begin_offset, int piecelength) //Same parameters as 'Request' message
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(13); //Length
rs.WriteByte(8); //ID
rs.WriteInt(pieceid); //Payload: Piece ID [index]
rs.WriteInt(piece_begin_offset); //Payload: Byte Offset [begin]
rs.WriteInt(piecelength); //Payload: Piece Read Length [length]
return(rs.GetByteArray());
}
public static byte[] Piece(int pieceid, int piece_begin_offset, byte[] piece_part) //WARNING: USE REQUESTED AMOUNT OF BYTES (MAX 16KB) AT A TIME, SEND IN MULTIPLE REQUESTS
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(9 + piece_part.Length); //Length
rs.WriteByte(7); //ID
rs.WriteInt(pieceid); //Payload: Piece ID [index]
rs.WriteInt(piece_begin_offset); //Payload: Byte Offset [begin]
rs.WriteByteArray(piece_part); //Payload: Piece Block [block]
return(rs.GetByteArray());
}
public static byte[] Request(int pieceid, int piece_begin_offset, int piecelength) //WARNING: USE 16 KILOBYTES (2^14) AT A TIME, DOWNLOAD IN MULTIPLE REQUESTS
{
PacketGenerator rs = new PacketGenerator();
rs.WriteInt(13); //Length
rs.WriteByte(6); //ID
rs.WriteInt(pieceid); //Payload: Piece ID [index]
rs.WriteInt(piece_begin_offset); //Payload: Byte Offset [begin]
rs.WriteInt(piecelength); //Payload: Piece Read Length [length]
return(rs.GetByteArray());
}
public static byte[] Handshake(string clientName, byte[] info_hash, string peer_id)
{
PacketGenerator rs = new PacketGenerator();
byte[] reservedBytes = { 0, 0, 0, 0, 0, 0, 0, 0 };
rs.WriteByte(Convert.ToByte(clientName.Length));
rs.WriteString(clientName);
rs.WriteByteArray(reservedBytes);
rs.WriteByteArray(info_hash);
rs.WriteString(peer_id);
return(rs.GetByteArray());
}
