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## org.apache.coyote.tomcat4
Class CoyoteResponse

    java.lang.Object
      org.apache.coyote.tomcat4.CoyoteResponse

All Implemented Interfaces:
  HttpResponse, javax.servlet.http.HttpServletResponse, Response, javax.servlet.ServletResponse

public class CoyoteResponse
extends java.lang.Object
implements HttpResponse, javax.servlet.http.HttpServletResponse

Wrapper object for the Coyote response.

Version:
  $Revision: 1.33 $ $Date: 2003/09/18 16:13:51 $
Author:
  Remy Maucherat, Craig R. McClanahan

Field Summary
`protected boolean` | `appCommitted` The application commit flag.
`protected Connector` | `connector` Associated Catalina connector.
`protected Context` | `context` The Context within which this Request is being processed.
`protected java.util.ArrayList` | `cookies` The set of Cookies associated with this Response.
`protected Response` | `coyoteResponse` Coyote response.
`protected boolean` | `error` The error flag.
`protected CoyoteResponseFacade` | `facade` The facade associated with this response.
`protected java.text.SimpleDateFormat` | `format` The date format we will use for creating date headers.
`protected boolean` | `included` The included flag.
`protected static java.lang.String` | `info` Descriptive information about this Response implementation.
`protected OutputBuffer` | `outputBuffer` The associated output buffer.
`protected org.apache.coyote.tomcat4.CoyoteOutputStream` | `outputStream` The associated output stream.
`protected CharChunk` | `redirectURLCC` Recyclable buffer to hold the redirect URL.
`protected CoyoteRequest` | `request` The request with which this response is associated.
`protected static StringManager` | `sm` The string manager for this package.
`protected UEncoder` | `urlEncoder` URL encoder.
`protected boolean` | `usingOutputStream` Using output stream flag.
`protected boolean` | `usingWriter` Using writer flag.
`protected org.apache.coyote.tomcat4.CoyoteWriter` | `writer` The associated writer.

Fields inherited from interface javax.servlet.http.HttpServletResponse
`SC_ACCEPTED, SC_BAD_GATEWAY, SC_BAD_REQUEST, SC_CONFLICT, SC_CONTINUE, SC_CREATED, SC_EXPECTATION_FAILED, SC_FORBIDDEN, SC_FOUND, SC_GATEWAY_TIMEOUT, SC_GONE, SC_HTTP_VERSION_NOT_SUPPORTED, SC_INTERNAL_SERVER_ERROR, SC_LENGTH_REQUIRED, SC_METHOD_NOT_ALLOWED, SC_MOVED_PERMANENTLY, SC_MOVED_TEMPORARILY, SC_MULTIPLE_CHOICES, SC_NO_CONTENT, SC_NON_AUTHORITATIVE_INFORMATION, SC_NOT_ACCEPTABLE, SC_NOT_FOUND, SC_NOT_IMPLEMENTED, SC_NOT_MODIFIED, SC_OK, SC_PARTIAL_CONTENT, SC_PAYMENT_REQUIRED, SC_PRECONDITION_FAILED, SC_PROXY_AUTHENTICATION_REQUIRED, SC_REQUEST_ENTITY_TOO_LARGE, SC_REQUEST_TIMEOUT, SC_REQUEST_URI_TOO_LONG, SC_REQUESTED_RANGE_NOT_SATISFIABLE, SC_RESET_CONTENT, SC_SEE_OTHER, SC_SERVICE_UNAVAILABLE, SC_SWITCHING_PROTOCOLS, SC_TEMPORARY_REDIRECT, SC_UNAUTHORIZED, SC_UNSUPPORTED_MEDIA_TYPE, SC_USE_PROXY`

Constructor Summary
`CoyoteResponse()`

Method Summary
`void` | `addCookie(javax.servlet.http.Cookie cookie)` Add the specified Cookie to those that will be included with this Response.
`void` | `addDateHeader(java.lang.String name, long value)` Add the specified date header to the specified value.
`void` | `addHeader(java.lang.String name, java.lang.String value)` Add the specified header to the specified value.
`void` | `addIntHeader(java.lang.String name, int value)` Add the specified integer header to the specified value.
`boolean` | `containsHeader(java.lang.String name)` Has the specified header been set already in this response?
`javax.servlet.ServletOutputStream` | `createOutputStream()` Create and return a ServletOutputStream to write the content associated with this Response.
`java.lang.String` | `encodeRedirectUrl(java.lang.String url)` Deprecated. As of Version 2.1 of the Java Servlet API, use `encodeRedirectURL()` instead.
`java.lang.String` | `encodeRedirectURL(java.lang.String url)` Encode the session identifier associated with this response into the specified redirect URL, if necessary.
`java.lang.String` | `encodeUrl(java.lang.String url)` Deprecated. As of Version 2.1 of the Java Servlet API, use `encodeURL()` instead.
`java.lang.String` | `encodeURL(java.lang.String url)` Encode the session identifier associated with this response into the specified URL, if necessary.
`void` | `finishResponse()` Perform whatever actions are required to flush and close the output stream or writer, in a single operation.
`void` | `flushBuffer()` Flush the buffer and commit this response.
`int` | `getBufferSize()` Return the actual buffer size used for this Response.
`java.lang.String` | `getCharacterEncoding()` Return the character encoding used for this Response.
`Connector` | `getConnector()` Return the Connector through which this Request was received.
`int` | `getContentCount()` Return the number of bytes actually written to the output stream.
`int` | `getContentLength()` Return the content length that was set or calculated for this Response.
`java.lang.String` | `getContentType()` Return the content type that was set or calculated for this response, or `null` if no content type was set.
`Context` | `getContext()` Return the Context within which this Request is being processed.
`javax.servlet.http.Cookie[]` | `getCookies()` Return an array of all cookies set for this response, or a zero-length array if no cookies have been set.
`Response` | `getCoyoteResponse()` Get the Coyote response.
`java.lang.String` | `getHeader(java.lang.String name)` Return the value for the specified header, or `null` if this header has not been set.
`java.lang.String[]` | `getHeaderNames()` Return an array of all the header names set for this response, or a zero-length array if no headers have been set.
`java.lang.String[]` | `getHeaderValues(java.lang.String name)` Return an array of all the header values associated with the specified header name, or an zero-length array if there are no such header values.
`boolean` | `getIncluded()` Return the "processing inside an include" flag.
`java.lang.String` | `getInfo()` Return descriptive information about this Response implementation and the corresponding version number, in the format `<description>/<version>`.
`java.util.Locale` | `getLocale()` Return the Locale assigned to this response.
`java.lang.String` | `getMessage()` Return the error message that was set with `sendError()` for this Response.
`javax.servlet.ServletOutputStream` | `getOutputStream()` Return the servlet output stream associated with this Response.
`java.io.PrintWriter` | `getReporter()` Return a PrintWriter that can be used to render error messages, regardless of whether a stream or writer has already been acquired.
`Request` | `getRequest()` Return the Request with which this Response is associated.
`javax.servlet.ServletResponse` | `getResponse()` Return the `ServletResponse` for which this object is the facade.
`int` | `getStatus()` Return the HTTP status code associated with this Response.
`java.io.OutputStream` | `getStream()` Return the output stream associated with this Response.
`java.io.PrintWriter` | `getWriter()` Return the writer associated with this Response.
`boolean` | `isAppCommitted()` Application commit flag accessor.
`boolean` | `isCommitted()` Has the output of this response already been committed?
`protected boolean` | `isEncodeable(java.lang.String location)` Return `true` if the specified URL should be encoded with a session identifier.
`boolean` | `isError()` Error flag accessor.
`boolean` | `isSuspended()` Suspended flag accessor.
`void` | `recycle()` Release all object references, and initialize instance variables, in preparation for reuse of this object.
`void` | `reset()` Clear any content written to the buffer.
`void` | `reset(int status, java.lang.String message)` Reset this response, and specify the values for the HTTP status code and corresponding message.
`void` | `resetBuffer()` Reset the data buffer but not any status or header information.
`void` | `sendAcknowledgement()` Send an acknowledgment of a request.
`void` | `sendError(int status)` Send an error response with the specified status and a default message.
`void` | `sendError(int status, java.lang.String message)` Send an error response with the specified status and message.
`void` | `sendRedirect(java.lang.String location)` Send a temporary redirect to the specified redirect location URL.
`void` | `setAppCommitted(boolean appCommitted)` Set the application commit flag.
`void` | `setBufferSize(int size)` Set the buffer size to be used for this Response.
`void` | `setConnector(Connector connector)` Set the Connector through which this Request was received.
`void` | `setContentLength(int length)` Set the content length (in bytes) for this Response.
`void` | `setContentType(java.lang.String type)` Set the content type for this Response.
`void` | `setContext(Context context)` Set the Context within which this Request is being processed.
`void` | `setCoyoteResponse(Response coyoteResponse)` Set the Coyote response.
`void` | `setDateHeader(java.lang.String name, long value)` Set the specified date header to the specified value.
`void` | `setError()` Set the error flag.
`void` | `setHeader(java.lang.String name, java.lang.String value)` Set the specified header to the specified value.
`void` | `setIncluded(boolean included)` Set the "processing inside an include" flag.
`void` | `setIntHeader(java.lang.String name, int value)` Set the specified integer header to the specified value.
`void` | `setLocale(java.util.Locale locale)` Set the Locale that is appropriate for this response, including setting the appropriate character encoding.
`void` | `setRequest(Request request)` Set the Request with which this Response is associated.
`void` | `setStatus(int status)` Set the HTTP status to be returned with this response.
`void` | `setStatus(int status, java.lang.String message)` Deprecated. As of Version 2.1 of the Java Servlet API, this method has been deprecated due to the ambiguous meaning of the message parameter.
`void` | `setStream(java.io.OutputStream stream)` Set the output stream associated with this Response.
`void` | `setSuspended(boolean suspended)` Set the suspended flag.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface javax.servlet.ServletResponse
`setCharacterEncoding`

Field Detail

### format

    protected final java.text.SimpleDateFormat format

  The date format we will use for creating date headers.

### info

    protected static final java.lang.String info

  Descriptive information about this Response implementation.

  See Also:
    Constant Field Values

### sm

    protected static StringManager sm

  The string manager for this package.

### connector

    protected Connector connector

  Associated Catalina connector.

### coyoteResponse

    protected Response coyoteResponse

  Coyote response.

### context

    protected Context context

  The Context within which this Request is being processed.

### outputBuffer

    protected OutputBuffer outputBuffer

  The associated output buffer.

### outputStream

    protected org.apache.coyote.tomcat4.CoyoteOutputStream outputStream

  The associated output stream.

### writer

    protected org.apache.coyote.tomcat4.CoyoteWriter writer

  The associated writer.

### appCommitted

    protected boolean appCommitted

  The application commit flag.

### included

    protected boolean included

  The included flag.

### error

    protected boolean error

  The error flag.

### cookies

    protected java.util.ArrayList cookies

  The set of Cookies associated with this Response.

### usingOutputStream

    protected boolean usingOutputStream

  Using output stream flag.

### usingWriter

    protected boolean usingWriter

  Using writer flag.

### urlEncoder

    protected UEncoder urlEncoder

  URL encoder.

### redirectURLCC

    protected CharChunk redirectURLCC

  Recyclable buffer to hold the redirect URL.

### request

    protected CoyoteRequest request

  The request with which this response is associated.

### facade

    protected CoyoteResponseFacade facade

  The facade associated with this response.

Constructor Detail

### CoyoteResponse

    public CoyoteResponse()

Method Detail

### getConnector

    public Connector getConnector()

  Return the Connector through which this Request was received.

  Specified by:
    `getConnector` in interface `Response`

### setConnector

    public void setConnector(Connector connector)

  Set the Connector through which this Request was received.

  Specified by:
    `setConnector` in interface `Response`
  Parameters:
    `connector` - The new connector

### setCoyoteResponse

    public void setCoyoteResponse(Response coyoteResponse)

  Set the Coyote response.

### getCoyoteResponse

    public Response getCoyoteResponse()

  Get the Coyote response.

### getContext

    public Context getContext()

  Return the Context within which this Request is being processed.

  Specified by:
    `getContext` in interface `Response`

### setContext

    public void setContext(Context context)

  Set the Context within which this Request is being processed. This must be called as soon as the appropriate Context is identified, because it identifies the value to be returned by `getContextPath()`, and thus enables parsing of the request URI.

  Specified by:
    `setContext` in interface `Response`
  Parameters:
    `context` - The newly associated Context

### recycle

    public void recycle()

  Release all object references, and initialize instance variables, in preparation for reuse of this object.

  Specified by:
    `recycle` in interface `Response`

### getContentCount

    public int getContentCount()

  Return the number of bytes actually written to the output stream.

  Specified by:
    `getContentCount` in interface `Response`

### setAppCommitted

    public void setAppCommitted(boolean appCommitted)

  Set the application commit flag.

  Specified by:
    `setAppCommitted` in interface `Response`
  Parameters:
    `appCommitted` - The new application committed flag value

### isAppCommitted

    public boolean isAppCommitted()

  Application commit flag accessor.

  Specified by:
    `isAppCommitted` in interface `Response`

### getIncluded

    public boolean getIncluded()

  Return the "processing inside an include" flag.

  Specified by:
    `getIncluded` in interface `Response`

### setIncluded

    public void setIncluded(boolean included)

  Set the "processing inside an include" flag.

  Specified by:
    `setIncluded` in interface `Response`
  Parameters:
    `included` - `true` if we are currently inside a RequestDispatcher.include(), else `false`

### getInfo

    public java.lang.String getInfo()

  Return descriptive information about this Response implementation and the corresponding version number, in the format `<description>/<version>`.

  Specified by:
    `getInfo` in interface `Response`

### getRequest

    public Request getRequest()

  Return the Request with which this Response is associated.

  Specified by:
    `getRequest` in interface `Response`

### setRequest

    public void setRequest(Request request)

  Set the Request with which this Response is associated.

  Specified by:
    `setRequest` in interface `Response`
  Parameters:
    `request` - The new associated request

### getResponse

    public javax.servlet.ServletResponse getResponse()

  Return the `ServletResponse` for which this object is the facade.

  Specified by:
    `getResponse` in interface `Response`

### getStream

    public java.io.OutputStream getStream()

  Return the output stream associated with this Response.

  Specified by:
    `getStream` in interface `Response`

### setStream

    public void setStream(java.io.OutputStream stream)

  Set the output stream associated with this Response.

  Specified by:
    `setStream` in interface `Response`
  Parameters:
    `stream` - The new output stream

### setSuspended

    public void setSuspended(boolean suspended)

  Set the suspended flag.

  Specified by:
    `setSuspended` in interface `Response`
  Parameters:
    `suspended` - The new suspended flag value

### isSuspended

    public boolean isSuspended()

  Suspended flag accessor.

  Specified by:
    `isSuspended` in interface `Response`

### setError

    public void setError()

  Set the error flag.

  Specified by:
    `setError` in interface `Response`

### isError

    public boolean isError()

  Error flag accessor.

  Specified by:
    `isError` in interface `Response`

### createOutputStream

    public javax.servlet.ServletOutputStream createOutputStream()
                                                         throws java.io.IOException

  Create and return a ServletOutputStream to write the content associated with this Response.

  Specified by:
    `createOutputStream` in interface `Response`
  Throws:
    `java.io.IOException` - if an input/output error occurs

### finishResponse

    public void finishResponse()
                        throws java.io.IOException

  Perform whatever actions are required to flush and close the output stream or writer, in a single operation.

  Specified by:
    `finishResponse` in interface `Response`
  Throws:
    `java.io.IOException` - if an input/output error occurs

### getContentLength

    public int getContentLength()

  Return the content length that was set or calculated for this Response.

  Specified by:
    `getContentLength` in interface `Response`

### getContentType

    public java.lang.String getContentType()

  Return the content type that was set or calculated for this response, or `null` if no content type was set.

  Specified by:
    `getContentType` in interface `Response`

### getReporter

    public java.io.PrintWriter getReporter()

  Return a PrintWriter that can be used to render error messages, regardless of whether a stream or writer has already been acquired.

  Specified by:
    `getReporter` in interface `Response`
  Returns:
    Writer which can be used for error reports. If the response is not an error report returned using sendError or triggered by an unexpected exception thrown during the servlet processing (and only in that case), null will be returned if the response stream has already been used.

### flushBuffer

    public void flushBuffer()
                     throws java.io.IOException

  Flush the buffer and commit this response.

  Specified by:
    `flushBuffer` in interface `javax.servlet.ServletResponse`
  Throws:
    `java.io.IOException` - if an input/output error occurs

### getBufferSize

    public int getBufferSize()

  Return the actual buffer size used for this Response.

  Specified by:
    `getBufferSize` in interface `javax.servlet.ServletResponse`

### getCharacterEncoding

    public java.lang.String getCharacterEncoding()

  Return the character encoding used for this Response.

  Specified by:
    `getCharacterEncoding` in interface `javax.servlet.ServletResponse`

### getOutputStream

    public javax.servlet.ServletOutputStream getOutputStream()
                                                      throws java.io.IOException

  Return the servlet output stream associated with this Response.

  Specified by:
    `getOutputStream` in interface `javax.servlet.ServletResponse`
  Throws:
    `java.lang.IllegalStateException` - if `getWriter` has already been called for this response
    `java.io.IOException` - if an input/output error occurs

### getLocale

    public java.util.Locale getLocale()

  Return the Locale assigned to this response.

  Specified by:
    `getLocale` in interface `javax.servlet.ServletResponse`

### getWriter

    public java.io.PrintWriter getWriter()
                                  throws java.io.IOException

  Return the writer associated with this Response.

  Specified by:
    `getWriter` in interface `javax.servlet.ServletResponse`
  Throws:
    `java.lang.IllegalStateException` - if `getOutputStream` has already been called for this response
    `java.io.IOException` - if an input/output error occurs

### isCommitted

    public boolean isCommitted()

  Has the output of this response already been committed?

  Specified by:
    `isCommitted` in interface `javax.servlet.ServletResponse`

### reset

    public void reset()

  Clear any content written to the buffer.

  Specified by:
    `reset` in interface `javax.servlet.ServletResponse`
  Throws:
    `java.lang.IllegalStateException` - if this response has already been committed

### resetBuffer

    public void resetBuffer()

  Reset the data buffer but not any status or header information.

  Specified by:
    `resetBuffer` in interface `Response`
  Throws:
    `java.lang.IllegalStateException` - if the response has already been committed

### setBufferSize

    public void setBufferSize(int size)

  Set the buffer size to be used for this Response.

  Specified by:
    `setBufferSize` in interface `javax.servlet.ServletResponse`
  Parameters:
    `size` - The new buffer size
  Throws:
    `java.lang.IllegalStateException` - if this method is called after output has been committed for this response

### setContentLength

    public void setContentLength(int length)

  Set the content length (in bytes) for this Response.

  Specified by:
    `setContentLength` in interface `javax.servlet.ServletResponse`
  Parameters:
    `length` - The new content length

### setContentType

    public void setContentType(java.lang.String type)

  Set the content type for this Response.

  Specified by:
    `setContentType` in interface `javax.servlet.ServletResponse`
  Parameters:
    `type` - The new content type

### setLocale

    public void setLocale(java.util.Locale locale)

  Set the Locale that is appropriate for this response, including setting the appropriate character encoding.

  Specified by:
    `setLocale` in interface `javax.servlet.ServletResponse`
  Parameters:
    `locale` - The new locale

### getCookies

    public javax.servlet.http.Cookie[] getCookies()

  Return an array of all cookies set for this response, or a zero-length array if no cookies have been set.

  Specified by:
    `getCookies` in interface `HttpResponse`

### getHeader

    public java.lang.String getHeader(java.lang.String name)

  Return the value for the specified header, or `null` if this header has not been set. If more than one value was added for this name, only the first is returned; use getHeaderValues() to retrieve all of them.

  Specified by:
    `getHeader` in interface `HttpResponse`
  Parameters:
    `name` - Header name to look up

### getHeaderNames

    public java.lang.String[] getHeaderNames()

  Return an array of all the header names set for this response, or a zero-length array if no headers have been set.

  Specified by:
    `getHeaderNames` in interface `HttpResponse`

### getHeaderValues

    public java.lang.String[] getHeaderValues(java.lang.String name)

  Return an array of all the header values associated with the specified header name, or an zero-length array if there are no such header values.

  Specified by:
    `getHeaderValues` in interface `HttpResponse`
  Parameters:
    `name` - Header name to look up

### getMessage

    public java.lang.String getMessage()

  Return the error message that was set with `sendError()` for this Response.

  Specified by:
    `getMessage` in interface `HttpResponse`

### getStatus

    public int getStatus()

  Return the HTTP status code associated with this Response.

  Specified by:
    `getStatus` in interface `HttpResponse`

### reset

    public void reset(int status,
                      java.lang.String message)

  Reset this response, and specify the values for the HTTP status code and corresponding message.

  Specified by:
    `reset` in interface `HttpResponse`
  Throws:
    `java.lang.IllegalStateException` - if this response has already been committed

### addCookie

    public void addCookie(javax.servlet.http.Cookie cookie)

  Add the specified Cookie to those that will be included with this Response.

  Specified by:
    `addCookie` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `cookie` - Cookie to be added

### addDateHeader

    public void addDateHeader(java.lang.String name,
                              long value)

  Add the specified date header to the specified value.

  Specified by:
    `addDateHeader` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `name` - Name of the header to set
    `value` - Date value to be set

### addHeader

    public void addHeader(java.lang.String name,
                          java.lang.String value)

  Add the specified header to the specified value.

  Specified by:
    `addHeader` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `name` - Name of the header to set
    `value` - Value to be set

### addIntHeader

    public void addIntHeader(java.lang.String name,
                             int value)

  Add the specified integer header to the specified value.

  Specified by:
    `addIntHeader` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `name` - Name of the header to set
    `value` - Integer value to be set

### containsHeader

    public boolean containsHeader(java.lang.String name)

  Has the specified header been set already in this response?

  Specified by:
    `containsHeader` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `name` - Name of the header to check

### encodeRedirectURL

    public java.lang.String encodeRedirectURL(java.lang.String url)

  Encode the session identifier associated with this response into the specified redirect URL, if necessary.

  Specified by:
    `encodeRedirectURL` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `url` - URL to be encoded

### encodeRedirectUrl

    public java.lang.String encodeRedirectUrl(java.lang.String url)

  Deprecated. As of Version 2.1 of the Java Servlet API, use `encodeRedirectURL()` instead.

  Encode the session identifier associated with this response into the specified redirect URL, if necessary.

  Specified by:
    `encodeRedirectUrl` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `url` - URL to be encoded

### encodeURL

    public java.lang.String encodeURL(java.lang.String url)

  Encode the session identifier associated with this response into the specified URL, if necessary.

  Specified by:
    `encodeURL` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `url` - URL to be encoded

### encodeUrl

    public java.lang.String encodeUrl(java.lang.String url)

  Deprecated. As of Version 2.1 of the Java Servlet API, use `encodeURL()` instead.

  Encode the session identifier associated with this response into the specified URL, if necessary.

  Specified by:
    `encodeUrl` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `url` - URL to be encoded

### sendAcknowledgement

    public void sendAcknowledgement()
                             throws java.io.IOException

  Send an acknowledgment of a request.

  Specified by:
    `sendAcknowledgement` in interface `Response`
  Throws:
    `java.io.IOException` - if an input/output error occurs

### sendError

    public void sendError(int status)
                   throws java.io.IOException

  Send an error response with the specified status and a default message.

  Specified by:
    `sendError` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `status` - HTTP status code to send
  Throws:
    `java.lang.IllegalStateException` - if this response has already been committed
    `java.io.IOException` - if an input/output error occurs

### sendError

    public void sendError(int status,
                          java.lang.String message)
                   throws java.io.IOException

  Send an error response with the specified status and message.

  Specified by:
    `sendError` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `status` - HTTP status code to send
    `message` - Corresponding message to send
  Throws:
    `java.lang.IllegalStateException` - if this response has already been committed
    `java.io.IOException` - if an input/output error occurs

### sendRedirect

    public void sendRedirect(java.lang.String location)
                      throws java.io.IOException

  Send a temporary redirect to the specified redirect location URL.

  Specified by:
    `sendRedirect` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `location` - Location URL to redirect to
  Throws:
    `java.lang.IllegalStateException` - if this response has already been committed
    `java.io.IOException` - if an input/output error occurs

### setDateHeader

    public void setDateHeader(java.lang.String name,
                              long value)

  Set the specified date header to the specified value.

  Specified by:
    `setDateHeader` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `name` - Name of the header to set
    `value` - Date value to be set

### setHeader

    public void setHeader(java.lang.String name,
                          java.lang.String value)

  Set the specified header to the specified value.

  Specified by:
    `setHeader` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `name` - Name of the header to set
    `value` - Value to be set

### setIntHeader

    public void setIntHeader(java.lang.String name,
                             int value)

  Set the specified integer header to the specified value.

  Specified by:
    `setIntHeader` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `name` - Name of the header to set
    `value` - Integer value to be set

### setStatus

    public void setStatus(int status)

  Set the HTTP status to be returned with this response.

  Specified by:
    `setStatus` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `status` - The new HTTP status

### setStatus

    public void setStatus(int status,
                          java.lang.String message)

  Deprecated. As of Version 2.1 of the Java Servlet API, this method has been deprecated due to the ambiguous meaning of the message parameter.

  Set the HTTP status and message to be returned with this response.

  Specified by:
    `setStatus` in interface `javax.servlet.http.HttpServletResponse`
  Parameters:
    `status` - The new HTTP status
    `message` - The associated text message

### isEncodeable

    protected boolean isEncodeable(java.lang.String location)

  Return `true` if the specified URL should be encoded with a session identifier. This will be true if all of the following conditions are met:
  - The request we are responding to asked for a valid session
  - The requested session ID was not received via a cookie
  - The specified URL points back to somewhere within the web application that is responding to this request

  Parameters:
    `location` - Absolute URL to be validated

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