org.csource.fastdht

类 ProtoCommon

java.lang.Object

org.csource.fastdht.ProtoCommon

public class ProtoCommon
extends Object

protocol common functions

版本:

Version 1.03

作者:

Happy Fish / YuQing

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	ProtoCommon.PkgHeader package header info
static class	ProtoCommon.PkgInfo package info

字段概要

字段

限定符和类型	字段和说明
static int	FDHT_EXPIRES_NEVER
static int	FDHT_EXPIRES_NONE
static byte	FDHT_FULL_KEY_SEPERATOR
static char	FDHT_KEY_LIST_SEP_CHAR
static String	FDHT_KEY_LIST_SEP_STR
static int	FDHT_MAX_FULL_KEY_LEN
static int	FDHT_MAX_NAMESPACE_LEN
static int	FDHT_MAX_OBJECT_ID_LEN
static int	FDHT_MAX_SUB_KEY_LEN
static byte	FDHT_PROTO_CMD_BATCH_DEL
static byte	FDHT_PROTO_CMD_BATCH_GET
static byte	FDHT_PROTO_CMD_BATCH_SET
static byte	FDHT_PROTO_CMD_DEL
static byte	FDHT_PROTO_CMD_GET
static byte	FDHT_PROTO_CMD_GET_SUB_KEYS
static byte	FDHT_PROTO_CMD_HEART_BEAT
static byte	FDHT_PROTO_CMD_INC
static byte	FDHT_PROTO_CMD_QUIT
static byte	FDHT_PROTO_CMD_RESP
static byte	FDHT_PROTO_CMD_SET
static byte	FDHT_PROTO_CMD_STAT
static int	FDHT_PROTO_PKG_HEADER_SIZE
static int	PROTO_HEADER_BODY_LEN_INDEX
static int	PROTO_HEADER_CMD_INDEX
static int	PROTO_HEADER_EXPIRES_INDEX
static int	PROTO_HEADER_KEEP_ALIVE_INDEX
static int	PROTO_HEADER_KEY_HASH_CODE_INDEX
static int	PROTO_HEADER_STATUS_INDEX
static int	PROTO_HEADER_TIMESTAMP_INDEX

方法概要

限定符和类型	方法和说明
static int	buff2int(byte[] bs, int offset) big-endian buff convert to int
static byte[]	int2buff(int n) int convert to buff (big-endian)
static void	int2buff(int n, byte[] bs, int offset) int convert to buff (big-endian)
static void	packHeader(ProtoCommon.PkgHeader header, byte[] bs) pack header by FastDHT transfer protocol
static void	quit(Socket sock) send quit command to server and close socket
static ProtoCommon.PkgHeader	recvHeader(InputStream in, byte expect_cmd, long expect_body_len) receive pack header
static ProtoCommon.PkgInfo	recvPackage(InputStream in, byte expect_cmd, long expect_body_len) receive whole pack

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

字段详细资料

FDHT_PROTO_CMD_QUIT

public static final byte FDHT_PROTO_CMD_QUIT

另请参阅:

常量字段值

FDHT_PROTO_CMD_SET

public static final byte FDHT_PROTO_CMD_SET

另请参阅:

常量字段值

FDHT_PROTO_CMD_INC

public static final byte FDHT_PROTO_CMD_INC

另请参阅:

常量字段值

FDHT_PROTO_CMD_GET

public static final byte FDHT_PROTO_CMD_GET

另请参阅:

常量字段值

FDHT_PROTO_CMD_DEL

public static final byte FDHT_PROTO_CMD_DEL

另请参阅:

常量字段值

FDHT_PROTO_CMD_BATCH_SET

public static final byte FDHT_PROTO_CMD_BATCH_SET

另请参阅:

常量字段值

FDHT_PROTO_CMD_BATCH_GET

public static final byte FDHT_PROTO_CMD_BATCH_GET

另请参阅:

常量字段值

FDHT_PROTO_CMD_BATCH_DEL

public static final byte FDHT_PROTO_CMD_BATCH_DEL

另请参阅:

常量字段值

FDHT_PROTO_CMD_STAT

public static final byte FDHT_PROTO_CMD_STAT

另请参阅:

常量字段值

FDHT_PROTO_CMD_GET_SUB_KEYS

public static final byte FDHT_PROTO_CMD_GET_SUB_KEYS

另请参阅:

常量字段值

FDHT_PROTO_CMD_HEART_BEAT

public static final byte FDHT_PROTO_CMD_HEART_BEAT

另请参阅:

常量字段值

FDHT_PROTO_CMD_RESP

public static final byte FDHT_PROTO_CMD_RESP

另请参阅:

常量字段值

PROTO_HEADER_BODY_LEN_INDEX

public static final int PROTO_HEADER_BODY_LEN_INDEX

另请参阅:

常量字段值

PROTO_HEADER_KEY_HASH_CODE_INDEX

public static final int PROTO_HEADER_KEY_HASH_CODE_INDEX

另请参阅:

常量字段值

PROTO_HEADER_TIMESTAMP_INDEX

public static final int PROTO_HEADER_TIMESTAMP_INDEX

另请参阅:

常量字段值

PROTO_HEADER_EXPIRES_INDEX

public static final int PROTO_HEADER_EXPIRES_INDEX

另请参阅:

常量字段值

PROTO_HEADER_CMD_INDEX

public static final int PROTO_HEADER_CMD_INDEX

另请参阅:

常量字段值

PROTO_HEADER_KEEP_ALIVE_INDEX

public static final int PROTO_HEADER_KEEP_ALIVE_INDEX

另请参阅:

常量字段值

PROTO_HEADER_STATUS_INDEX

public static final int PROTO_HEADER_STATUS_INDEX

另请参阅:

常量字段值

FDHT_PROTO_PKG_HEADER_SIZE

public static final int FDHT_PROTO_PKG_HEADER_SIZE

另请参阅:

常量字段值

FDHT_MAX_NAMESPACE_LEN

public static final int FDHT_MAX_NAMESPACE_LEN

另请参阅:

常量字段值

FDHT_MAX_OBJECT_ID_LEN

public static final int FDHT_MAX_OBJECT_ID_LEN

另请参阅:

常量字段值

FDHT_MAX_SUB_KEY_LEN

public static final int FDHT_MAX_SUB_KEY_LEN

另请参阅:

常量字段值

FDHT_FULL_KEY_SEPERATOR

public static final byte FDHT_FULL_KEY_SEPERATOR

另请参阅:

常量字段值

FDHT_KEY_LIST_SEP_CHAR

public static final char FDHT_KEY_LIST_SEP_CHAR

另请参阅:

常量字段值

FDHT_KEY_LIST_SEP_STR

public static final String FDHT_KEY_LIST_SEP_STR

FDHT_EXPIRES_NEVER

public static final int FDHT_EXPIRES_NEVER

另请参阅:

常量字段值

FDHT_EXPIRES_NONE

public static final int FDHT_EXPIRES_NONE

另请参阅:

常量字段值

FDHT_MAX_FULL_KEY_LEN

public static final int FDHT_MAX_FULL_KEY_LEN

另请参阅:

常量字段值

方法详细资料

packHeader

public static void packHeader(ProtoCommon.PkgHeader header,
                              byte[] bs)
                       throws UnsupportedEncodingException

pack header by FastDHT transfer protocol

参数:

header - package header

bs - byte buff

抛出:

UnsupportedEncodingException

recvHeader

public static ProtoCommon.PkgHeader recvHeader(InputStream in,
                                               byte expect_cmd,
                                               long expect_body_len)
                                        throws IOException

receive pack header

参数:

in - input stream

expect_cmd - expect response command

expect_body_len - expect response package body length

返回:

PkgHeader: status and pkg body length

抛出:

IOException

recvPackage

public static ProtoCommon.PkgInfo recvPackage(InputStream in,
                                              byte expect_cmd,
                                              long expect_body_len)
                                       throws IOException

receive whole pack

参数:

in - input stream

expect_cmd - expect response command

expect_body_len - expect response package body length

返回:

PkgInfo: status and reponse body(byte buff)

抛出:

IOException

quit

public static void quit(Socket sock)
                 throws IOException

send quit command to server and close socket

参数:

sock - the Socket object

抛出:

IOException

int2buff

public static byte[] int2buff(int n)

int convert to buff (big-endian)

参数:

n - number

返回:

4 bytes buff

int2buff

public static void int2buff(int n,
                            byte[] bs,
                            int offset)

int convert to buff (big-endian)

参数:

n - number

bs - byte buff

offset - buff start index

buff2int

public static int buff2int(byte[] bs,
                           int offset)

big-endian buff convert to int

参数:

bs - 4 bytes buff

offset - start index

返回:

int number