BitTorrent/MessageConstants.java at main · shaunak97/BitTorrent · GitHub

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/**
 * This Interface contains the package level constants
 */
public interface MessageConstants {

	// Message Encoding style
	public static final String MSG_CHARSET_NAME = "UTF8";

	// For Handshake message header
	public static final int HANDSHAKE_MSG_LEN = 32;

	public static final int HANDSHAKE_HEADER_LEN = 18;

	public static final int HANDSHAKE_ZEROBITS_LEN = 10;

	public static final int HANDSHAKE_PEERID_LEN = 4;

	// For Handshake message header
	public static final int DATA_MSG_LEN = 4;

	public static final int DATA_MSG_TYPE = 1;

	public static final String DATA_MSG_CHOKE = "0";

	public static final String DATA_MSG_UNCHOKE = "1";

	public static final String DATA_MSG_INTERESTED = "2";

	public static final String DATA_MSG_NOTINTERESTED = "3";

	public static final String DATA_MSG_HAVE = "4";

	public static final String DATA_MSG_BITFIELD = "5";

	public static final String DATA_MSG_REQUEST = "6";

	public static final String DATA_MSG_PIECE = "7";

	public static final String HANDSHAKE_HEADER = "P2PFILESHARINGPROJ";


	public static final int PIECE_INDEX_LEN = 4;

}