org.apache.jk.common

Class MsgAjp

public class MsgAjp extends Msg

A single packet for communication between the web server and the container. Designed to be reused many times with no creation of garbage. Understands the format of data types for these packets. Can be used (somewhat confusingly) for both incoming and outgoing packets. See Ajp14/Ajp13Packet.java.

Author: Henri Gomez [hgomez@apache.org] Dan Milstein [danmil@shore.net] Keith Wannamaker [Keith@Wannamaker.org] Kevin Seguin Costin Manolache

Constructor Summary
	MsgAjp(int bsize) Constructor that takes a buffer size
	MsgAjp() No arg constructor.

Method Summary
void	appendByte(int val)
void	appendByteChunk(ByteChunk bc)
void	appendBytes(MessageBytes mb) Write a String out at the current write position.
void	appendBytes(byte[] b, int off, int numBytes) Copy a chunk of bytes into the packet, starting at the current write position.
void	appendInt(int val) Add an int.
void	appendLongInt(int val)
void	dump(String msg)
void	end() For a packet to be sent to the web server, finish the process of accumulating data and write the length of the data payload into the header.
byte[]	getBuffer()
byte	getByte()
void	getBytes(MessageBytes mb)
int	getBytes(byte[] dest) Copy a chunk of bytes from the packet into an array and advance the read position past the chunk.
int	getHeaderLength()
int	getInt() Read an integer from packet, and advance the read position past it.
int	getLen()
int	getLongInt() Read a 32 bits integer from packet, and advance the read position past it.
static String	hexLine(byte[] buf, int start, int len)
byte	peekByte()
int	peekInt()
int	processHeader()
void	reset() Prepare this packet for accumulating a message from the container to the web server.

Constructor Detail

MsgAjp

public MsgAjp(int bsize)

Constructor that takes a buffer size

MsgAjp

public MsgAjp()

Deprecated: Use the buffer size constructor.

No arg constructor.

Method Detail

appendByte

public void appendByte(int val)

appendByteChunk

public void appendByteChunk(ByteChunk bc)

appendBytes

public void appendBytes(MessageBytes mb)

Write a String out at the current write position. Strings are encoded with the length in two bytes first, then the string, and then a terminating \0 (which is not included in the encoded length). The terminator is for the convenience of the C code, where it saves a round of copying. A null string is encoded as a string with length 0.

appendBytes

public void appendBytes(byte[] b, int off, int numBytes)

Copy a chunk of bytes into the packet, starting at the current write position. The chunk of bytes is encoded with the length in two bytes first, then the data itself, and finally a terminating \0 (which is not included in the encoded length).

Parameters: b The array from which to copy bytes. off The offset into the array at which to start copying numBytes The number of bytes to copy.