org.apache.ajp
Class RequestHandler

java.lang.Object
  org.apache.ajp.AjpHandler
      org.apache.ajp.RequestHandler

public class RequestHandler

extends AjpHandler

Handle messages related with basic request information. This object can handle the following incoming messages: - "FORWARD_REQUEST" input message ( sent when a request is passed from the web server ) - "PING REQUEST" input message (sent by the web server to determine if tomcat is not frozen, a PONG REPLY will be sent back) - "RECEIVE_BODY_CHUNK" input ( sent by container to pass more body, in response to GET_BODY_CHUNK ) It can handle the following outgoing messages: - SEND_HEADERS. Pass the status code and headers. - SEND_BODY_CHUNK. Send a chunk of body - GET_BODY_CHUNK. Request a chunk of body data - END_RESPONSE. Notify the end of a request processing.

Author:

Henri Gomez [hgomez@apache.org], Dan Milstein [danmil@shore.net], Keith Wannamaker [Keith@Wannamaker.org], Costin Manolache

Field Summary

static java.lang.String[]	headerTransArray
static byte	JK_AJP13_CPING_REQUEST
static byte	JK_AJP13_CPONG_REPLY
static byte	JK_AJP13_END_RESPONSE
static byte	JK_AJP13_FORWARD_REQUEST
static byte	JK_AJP13_GET_BODY_CHUNK
static byte	JK_AJP13_PING_REQUEST
static byte	JK_AJP13_SEND_BODY_CHUNK
static byte	JK_AJP13_SEND_HEADERS
static byte	JK_AJP13_SHUTDOWN
static java.lang.String[]	methodTransArray
static byte	SC_A_ARE_DONE
static byte	SC_A_AUTH_TYPE
static byte	SC_A_CONTEXT
static byte	SC_A_JVM_ROUTE
static byte	SC_A_QUERY_STRING
static byte	SC_A_REMOTE_USER
static byte	SC_A_REQ_ATTRIBUTE
static byte	SC_A_SECRET
static byte	SC_A_SERVLET_PATH
static byte	SC_A_SSL_CERT
static byte	SC_A_SSL_CIPHER
static byte	SC_A_SSL_KEY_SIZE
static byte	SC_A_SSL_SESSION
static int	SC_REQ_ACCEPT
static int	SC_REQ_ACCEPT_CHARSET
static int	SC_REQ_ACCEPT_ENCODING
static int	SC_REQ_ACCEPT_LANGUAGE
static int	SC_REQ_AUTHORIZATION
static int	SC_REQ_CONNECTION
static int	SC_REQ_CONTENT_LENGTH
static int	SC_REQ_CONTENT_TYPE
static int	SC_REQ_COOKIE
static int	SC_REQ_COOKIE2
static int	SC_REQ_HOST
static int	SC_REQ_PRAGMA
static int	SC_REQ_REFERER
static int	SC_REQ_USER_AGENT
static int	SC_RESP_CONTENT_LANGUAGE
static int	SC_RESP_CONTENT_LENGTH
static int	SC_RESP_CONTENT_TYPE
static int	SC_RESP_DATE
static int	SC_RESP_LAST_MODIFIED
static int	SC_RESP_LOCATION
static int	SC_RESP_SERVLET_ENGINE
static int	SC_RESP_SET_COOKIE
static int	SC_RESP_SET_COOKIE2
static int	SC_RESP_STATUS
static int	SC_RESP_WWW_AUTHENTICATE

Fields inherited from class org.apache.ajp.AjpHandler

UNKNOWN

Constructor Summary

RequestHandler()

Method Summary

int	available(Ajp13 ch)
void	beginSendHeaders(Ajp13 ch, Ajp13Packet outBuf, int status, java.lang.String statusMessage, int numHeaders)
protected int	decodeRequest(Ajp13 ch, Ajp13Packet msg, BaseRequest req) Parse a FORWARD_REQUEST packet from the web server and store its properties in the passed-in request object.
int	doRead(Ajp13 ch) Return the next byte of request body data (to a servlet).
int	doRead(Ajp13 ch, byte[] b, int off, int len) Store a chunk of request data into the passed-in byte buffer.
void	doWrite(Ajp13 ch, Ajp13Packet outBuf, byte[] b, int off, int len) Send a chunk of response body data to the web server and on to the browser.
void	endSendHeaders(Ajp13 ch, Ajp13Packet outBuf)
void	finish(Ajp13 ch, Ajp13Packet outBuf) Signal the web server that the servlet has finished handling this request, and that the connection can be reused.
int	handleAjpMessage(int type, Ajp13 channel, Ajp13Packet ajp, BaseRequest req) Execute the callback
protected int	headerNameToSc(java.lang.String name) Translate an HTTP response header name to an integer code if possible.
void	init(Ajp13 ajp14)
boolean	refillReadBuffer(Ajp13 ch) Get more request body data from the web server and store it in the internal buffer.
int	sendCPong(Ajp13 ch, Ajp13Packet outBuf) Send a CPONG REPLY to web server to its CPING request
void	sendHeader(Ajp13Packet outBuf, java.lang.String name, java.lang.String value)
void	sendHeaders(Ajp13 ch, Ajp13Packet outBuf, int status, MimeHeaders headers) Send the HTTP headers back to the web server and on to the browser.
void	sendHeaders(Ajp13 ch, Ajp13Packet outBuf, int status, java.lang.String statusMessage, MimeHeaders headers) Send the HTTP headers back to the web server and on to the browser.
void	setDebug(int debug)
void	setLogger(Logger l)

Methods inherited from class java.lang.Object

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

Field Detail

JK_AJP13_FORWARD_REQUEST

public static final byte JK_AJP13_FORWARD_REQUEST

See Also:

Constant Field Values

JK_AJP13_SHUTDOWN

public static final byte JK_AJP13_SHUTDOWN

See Also:

Constant Field Values

JK_AJP13_PING_REQUEST

public static final byte JK_AJP13_PING_REQUEST

See Also:

Constant Field Values

JK_AJP13_CPING_REQUEST

public static final byte JK_AJP13_CPING_REQUEST

See Also:

Constant Field Values

JK_AJP13_SEND_BODY_CHUNK

public static final byte JK_AJP13_SEND_BODY_CHUNK

See Also:

Constant Field Values

JK_AJP13_SEND_HEADERS

public static final byte JK_AJP13_SEND_HEADERS

See Also:

Constant Field Values

JK_AJP13_END_RESPONSE

public static final byte JK_AJP13_END_RESPONSE

See Also:

Constant Field Values

JK_AJP13_GET_BODY_CHUNK

public static final byte JK_AJP13_GET_BODY_CHUNK

See Also:

Constant Field Values

JK_AJP13_CPONG_REPLY

public static final byte JK_AJP13_CPONG_REPLY

See Also:

Constant Field Values

SC_RESP_CONTENT_TYPE

public static final int SC_RESP_CONTENT_TYPE

See Also:

Constant Field Values

SC_RESP_CONTENT_LANGUAGE

public static final int SC_RESP_CONTENT_LANGUAGE

See Also:

Constant Field Values

SC_RESP_CONTENT_LENGTH

public static final int SC_RESP_CONTENT_LENGTH

See Also:

Constant Field Values

SC_RESP_DATE

public static final int SC_RESP_DATE

See Also:

Constant Field Values

SC_RESP_LAST_MODIFIED

public static final int SC_RESP_LAST_MODIFIED

See Also:

Constant Field Values

SC_RESP_LOCATION

public static final int SC_RESP_LOCATION

See Also:

Constant Field Values

SC_RESP_SET_COOKIE

public static final int SC_RESP_SET_COOKIE

See Also:

Constant Field Values

SC_RESP_SET_COOKIE2

public static final int SC_RESP_SET_COOKIE2

See Also:

Constant Field Values

SC_RESP_SERVLET_ENGINE

public static final int SC_RESP_SERVLET_ENGINE

See Also:

Constant Field Values

SC_RESP_STATUS

public static final int SC_RESP_STATUS

See Also:

Constant Field Values

SC_RESP_WWW_AUTHENTICATE

public static final int SC_RESP_WWW_AUTHENTICATE

See Also:

Constant Field Values

SC_A_CONTEXT

public static final byte SC_A_CONTEXT

See Also:

Constant Field Values

SC_A_SERVLET_PATH

public static final byte SC_A_SERVLET_PATH

See Also:

Constant Field Values

SC_A_REMOTE_USER

public static final byte SC_A_REMOTE_USER

See Also:

Constant Field Values

SC_A_AUTH_TYPE

public static final byte SC_A_AUTH_TYPE

See Also:

Constant Field Values

SC_A_QUERY_STRING

public static final byte SC_A_QUERY_STRING

See Also:

Constant Field Values

SC_A_JVM_ROUTE

public static final byte SC_A_JVM_ROUTE

See Also:

Constant Field Values

SC_A_SSL_CERT

public static final byte SC_A_SSL_CERT

See Also:

Constant Field Values

SC_A_SSL_CIPHER

public static final byte SC_A_SSL_CIPHER

See Also:

Constant Field Values

SC_A_SSL_SESSION

public static final byte SC_A_SSL_SESSION

See Also:

Constant Field Values

SC_A_SSL_KEY_SIZE

public static final byte SC_A_SSL_KEY_SIZE

See Also:

Constant Field Values

SC_A_SECRET

public static final byte SC_A_SECRET

See Also:

Constant Field Values

SC_A_REQ_ATTRIBUTE

public static final byte SC_A_REQ_ATTRIBUTE

See Also:

Constant Field Values

SC_A_ARE_DONE

public static final byte SC_A_ARE_DONE

See Also:

Constant Field Values

methodTransArray

public static final java.lang.String[] methodTransArray

SC_REQ_ACCEPT

public static final int SC_REQ_ACCEPT

See Also:

Constant Field Values

SC_REQ_ACCEPT_CHARSET

public static final int SC_REQ_ACCEPT_CHARSET

See Also:

Constant Field Values

SC_REQ_ACCEPT_ENCODING

public static final int SC_REQ_ACCEPT_ENCODING

See Also:

Constant Field Values

SC_REQ_ACCEPT_LANGUAGE

public static final int SC_REQ_ACCEPT_LANGUAGE

See Also:

Constant Field Values

SC_REQ_AUTHORIZATION

public static final int SC_REQ_AUTHORIZATION

See Also:

Constant Field Values

SC_REQ_CONNECTION

public static final int SC_REQ_CONNECTION

See Also:

Constant Field Values

SC_REQ_CONTENT_TYPE

public static final int SC_REQ_CONTENT_TYPE

See Also:

Constant Field Values

SC_REQ_CONTENT_LENGTH

public static final int SC_REQ_CONTENT_LENGTH

See Also:

Constant Field Values

SC_REQ_COOKIE

public static final int SC_REQ_COOKIE

See Also:

Constant Field Values

SC_REQ_COOKIE2

public static final int SC_REQ_COOKIE2

See Also:

Constant Field Values

SC_REQ_HOST

public static final int SC_REQ_HOST

See Also:

Constant Field Values

SC_REQ_PRAGMA

public static final int SC_REQ_PRAGMA

See Also:

Constant Field Values

SC_REQ_REFERER

public static final int SC_REQ_REFERER

See Also:

Constant Field Values

SC_REQ_USER_AGENT

public static final int SC_REQ_USER_AGENT

See Also:

Constant Field Values

headerTransArray

public static final java.lang.String[] headerTransArray

Constructor Detail

RequestHandler

public RequestHandler()

Method Detail

init

public void init(Ajp13 ajp14)

Overrides:

init in class AjpHandler

sendCPong

public int sendCPong(Ajp13 ch,
                     Ajp13Packet outBuf)

Send a CPONG REPLY to web server to its CPING request

Parameters:

ch - the Ajp13 channel

outBuf - the Ajp13Packet output packet to use

handleAjpMessage

public int handleAjpMessage(int type,
                            Ajp13 channel,
                            Ajp13Packet ajp,
                            BaseRequest req)
                     throws java.io.IOException

Description copied from class: AjpHandler

Execute the callback

Overrides:

handleAjpMessage in class AjpHandler

Throws:

java.io.IOException

decodeRequest

protected int decodeRequest(Ajp13 ch,
                            Ajp13Packet msg,
                            BaseRequest req)
                     throws java.io.IOException

Parse a FORWARD_REQUEST packet from the web server and store its properties in the passed-in request object.

Parameters:

req - An empty (newly-recycled) request object.

msg - Holds the packet which has just been sent by the web server, with its read position just past the packet header (which in this case includes the prefix code for FORWARD_REQUEST).

Returns:

200 in case of a successful decoduing, 500 in case of error.

Throws:

java.io.IOException

sendHeaders

public void sendHeaders(Ajp13 ch,
                        Ajp13Packet outBuf,
                        int status,
                        java.lang.String statusMessage,
                        MimeHeaders headers)
                 throws java.io.IOException

Send the HTTP headers back to the web server and on to the browser.

Parameters:

status - The HTTP status code to send.

statusMessage - the HTTP status message to send.

headers - The set of all headers.

Throws:

java.io.IOException

finish

public void finish(Ajp13 ch,
                   Ajp13Packet outBuf)
            throws java.io.IOException

Signal the web server that the servlet has finished handling this request, and that the connection can be reused.

Throws:

java.io.IOException

doWrite

public void doWrite(Ajp13 ch,
                    Ajp13Packet outBuf,
                    byte[] b,
                    int off,
                    int len)
             throws java.io.IOException

Send a chunk of response body data to the web server and on to the browser.

Parameters:

b - A huffer of bytes to send.

off - The offset into the buffer from which to start sending.

len - The number of bytes to send.

Throws:

java.io.IOException

headerNameToSc

protected int headerNameToSc(java.lang.String name)

Translate an HTTP response header name to an integer code if possible. Case is ignored.

Parameters:

name - The name of the response header to translate.

Returns:

The code for that header name, or -1 if no code exists.

setDebug

public void setDebug(int debug)

setLogger

public void setLogger(Logger l)

available

public int available(Ajp13 ch)
              throws java.io.IOException

Throws:

java.io.IOException

doRead

public int doRead(Ajp13 ch)
           throws java.io.IOException

Return the next byte of request body data (to a servlet).

Throws:

java.io.IOException

See Also:

Request#doRead

doRead

public int doRead(Ajp13 ch,
                  byte[] b,
                  int off,
                  int len)
           throws java.io.IOException

Store a chunk of request data into the passed-in byte buffer.

Parameters:

b - A buffer to fill with data from the request.

off - The offset in the buffer at which to start filling.

len - The number of bytes to copy into the buffer.

Returns:

The number of bytes actually copied into the buffer, or -1 if the end of the stream has been reached.

Throws:

java.io.IOException

See Also:

Request#doRead

refillReadBuffer

public boolean refillReadBuffer(Ajp13 ch)
                         throws java.io.IOException

Get more request body data from the web server and store it in the internal buffer.

Returns:

true if there is more data, false if not.

Throws:

java.io.IOException

beginSendHeaders

public void beginSendHeaders(Ajp13 ch,
                             Ajp13Packet outBuf,
                             int status,
                             java.lang.String statusMessage,
                             int numHeaders)
                      throws java.io.IOException

Throws:

java.io.IOException

sendHeader

public void sendHeader(Ajp13Packet outBuf,
                       java.lang.String name,
                       java.lang.String value)
                throws java.io.IOException

Throws:

java.io.IOException

endSendHeaders

public void endSendHeaders(Ajp13 ch,
                           Ajp13Packet outBuf)
                    throws java.io.IOException

Throws:

java.io.IOException

sendHeaders

public void sendHeaders(Ajp13 ch,
                        Ajp13Packet outBuf,
                        int status,
                        MimeHeaders headers)
                 throws java.io.IOException

Send the HTTP headers back to the web server and on to the browser.

Parameters:

status - The HTTP status code to send.

headers - The set of all headers.

Throws:

java.io.IOException