java.lang.Object
- java.lang.Enum<ActionCode>
- - org.apache.coyote.ActionCode

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<ActionCode>
```
public enum ActionCode
extends java.lang.Enum<ActionCode>
```
ActionCodes represent callbacks from the servlet container to the coyote connector. Actions are implemented by ProtocolHandler, using the ActionHook interface.

Author:

Remy Maucherat

See Also:

ProtocolHandler, ActionHook

Enum Constant Summary

Enum Constants
Enum Constant	Description
`ACK`
`ASYNC_COMPLETE`	Callback for an async call to `AsyncContext.complete()`.
`ASYNC_DISPATCH`	Callback for an async call to `AsyncContext.dispatch()`.
`ASYNC_DISPATCHED`	Callback to indicate the the actual dispatch has started and that the async state needs change.
`ASYNC_ERROR`	Callback to trigger the error processing.
`ASYNC_IS_ASYNC`	Callback to determine if async processing is in progress.
`ASYNC_IS_COMPLETING`	Call back to determine if async complete is in progress.
`ASYNC_IS_DISPATCHING`	Callback to determine if async dispatch is in progress.
`ASYNC_IS_ERROR`	Callback to determine if async is in error.
`ASYNC_IS_STARTED`	Callback to determine if async dispatch is in progress.
`ASYNC_IS_TIMINGOUT`	Callback to determine if async is timing out.
`ASYNC_POST_PROCESS`	Callback to trigger post processing.
`ASYNC_RUN`	Callback for an async call to `AsyncContext.start(Runnable)`.
`ASYNC_SETTIMEOUT`	Callback for an async call to `AsyncContext.setTimeout(long)`
`ASYNC_START`	Callback for an async request.
`ASYNC_TIMEOUT`	Callback to trigger the processing of an async timeout.
`AVAILABLE`	Callback for getting the amount of available bytes.
`CLIENT_FLUSH`	A flush() operation originated by the client ( i.e. a flush() on the servlet output stream or writer, called by a servlet ).
`CLOSE`
`CLOSE_NOW`	A serious error occurred from which it is not possible to recover safely.
`COMMIT`
`CONNECTION_ID`	Obtain the connection identifier for the request.
`DISABLE_SWALLOW_INPUT`	Hook called if swallowing request input should be disabled.
`DISPATCH_EXECUTE`	Execute any non-blocking dispatches that have been registered via `DISPATCH_READ` or `DISPATCH_WRITE`.
`DISPATCH_READ`	Indicates that the container needs to trigger a call to onDataAvailable() for the registered non-blocking read listener.
`DISPATCH_WRITE`	Indicates that the container needs to trigger a call to onWritePossible() for the registered non-blocking write listener.
`IS_ERROR`	Has the processor been placed into the error state?
`IS_IO_ALLOWED`	The processor may have been placed into an error state and some error states do not permit any further I/O.
`IS_PUSH_SUPPORTED`	Is server push supported and allowed for the current request?
`IS_TRAILER_FIELDS_READY`	Are the request trailer fields ready to be read?
`IS_TRAILER_FIELDS_SUPPORTED`	Are HTTP trailer fields supported for the current response?
`NB_READ_INTEREST`	Indicator that Servlet is interested in being notified when data is available to be read.
`NB_WRITE_INTEREST`	Used with non-blocking writes to determine if a write is currently allowed (sets passed parameter to `true`) or not (sets passed parameter to `false`).
`PUSH_REQUEST`	Push a request on behalf of the client of the current request.
`REQ_HOST_ADDR_ATTRIBUTE`	Callback for lazy evaluation - extract the remote host address.
`REQ_HOST_ATTRIBUTE`	Callback for lazy evaluation - extract the remote host name and address.
`REQ_LOCAL_ADDR_ATTRIBUTE`	Callback for lazy evaluation - local address.
`REQ_LOCAL_NAME_ATTRIBUTE`	Callback for lazy evaluation - local address.
`REQ_LOCALPORT_ATTRIBUTE`	Callback for lazy evaluation - socket local port.
`REQ_PEER_ADDR_ATTRIBUTE`	Callback for lazy evaluation - extract the connection peer address.
`REQ_REMOTEPORT_ATTRIBUTE`	Callback for lazy evaluation - socket remote port.
`REQ_SET_BODY_REPLAY`	Callback for setting FORM auth body replay
`REQ_SSL_ATTRIBUTE`	Callback for lazy evaluation - extract the SSL-related attributes including the client certificate if present.
`REQ_SSL_CERTIFICATE`	Force a TLS re-handshake and make the resulting client certificate (if any) available as a request attribute.
`REQUEST_BODY_FULLY_READ`	Indicates if the request body has been fully read.
`STREAM_ID`	Obtain the stream identifier for the request.
`UPGRADE`	Callback to trigger the HTTP upgrade process.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static ActionCode`	`valueOf(java.lang.String name)`	Returns the enum constant of this type with the specified name.
`static ActionCode[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - ACK
```
public static final ActionCode ACK
```
  - CLOSE
```
public static final ActionCode CLOSE
```
  - COMMIT
```
public static final ActionCode COMMIT
```
  - CLOSE_NOW
```
public static final ActionCode CLOSE_NOW
```
    A serious error occurred from which it is not possible to recover safely. Further attempts to write to the response should be ignored and the connection needs to be closed as soon as possible. This can also be used to forcibly close a connection if an error occurs after the response has been committed.
  - CLIENT_FLUSH
```
public static final ActionCode CLIENT_FLUSH
```
    A flush() operation originated by the client ( i.e. a flush() on the servlet output stream or writer, called by a servlet ). Argument is the Response.
  - IS_ERROR
```
public static final ActionCode IS_ERROR
```
    Has the processor been placed into the error state? Note that the response may not have an appropriate error code set.
  - IS_IO_ALLOWED
```
public static final ActionCode IS_IO_ALLOWED
```
    The processor may have been placed into an error state and some error states do not permit any further I/O. Is I/O currently allowed?
  - DISABLE_SWALLOW_INPUT
```
public static final ActionCode DISABLE_SWALLOW_INPUT
```
    Hook called if swallowing request input should be disabled. Example: Cancel a large file upload.
  - REQ_HOST_ATTRIBUTE
```
public static final ActionCode REQ_HOST_ATTRIBUTE
```
    Callback for lazy evaluation - extract the remote host name and address.
  - REQ_HOST_ADDR_ATTRIBUTE
```
public static final ActionCode REQ_HOST_ADDR_ATTRIBUTE
```
    Callback for lazy evaluation - extract the remote host address.
  - REQ_PEER_ADDR_ATTRIBUTE
```
public static final ActionCode REQ_PEER_ADDR_ATTRIBUTE
```
    Callback for lazy evaluation - extract the connection peer address.
  - REQ_SSL_ATTRIBUTE
```
public static final ActionCode REQ_SSL_ATTRIBUTE
```
    Callback for lazy evaluation - extract the SSL-related attributes including the client certificate if present.
  - REQ_SSL_CERTIFICATE
```
public static final ActionCode REQ_SSL_CERTIFICATE
```
    Force a TLS re-handshake and make the resulting client certificate (if any) available as a request attribute.
  - REQ_REMOTEPORT_ATTRIBUTE
```
public static final ActionCode REQ_REMOTEPORT_ATTRIBUTE
```
    Callback for lazy evaluation - socket remote port.
  - REQ_LOCALPORT_ATTRIBUTE
```
public static final ActionCode REQ_LOCALPORT_ATTRIBUTE
```
    Callback for lazy evaluation - socket local port.
  - REQ_LOCAL_ADDR_ATTRIBUTE
```
public static final ActionCode REQ_LOCAL_ADDR_ATTRIBUTE
```
    Callback for lazy evaluation - local address.
  - REQ_LOCAL_NAME_ATTRIBUTE
```
public static final ActionCode REQ_LOCAL_NAME_ATTRIBUTE
```
    Callback for lazy evaluation - local address.
  - REQ_SET_BODY_REPLAY
```
public static final ActionCode REQ_SET_BODY_REPLAY
```
    Callback for setting FORM auth body replay
  - AVAILABLE
```
public static final ActionCode AVAILABLE
```
    Callback for getting the amount of available bytes.
  - ASYNC_START
```
public static final ActionCode ASYNC_START
```
    Callback for an async request.
  - ASYNC_DISPATCH
```
public static final ActionCode ASYNC_DISPATCH
```
    Callback for an async call to AsyncContext.dispatch().
  - ASYNC_DISPATCHED
```
public static final ActionCode ASYNC_DISPATCHED
```
    Callback to indicate the the actual dispatch has started and that the async state needs change.
  - ASYNC_RUN
```
public static final ActionCode ASYNC_RUN
```
    Callback for an async call to AsyncContext.start(Runnable).
  - ASYNC_COMPLETE
```
public static final ActionCode ASYNC_COMPLETE
```
    Callback for an async call to AsyncContext.complete().
  - ASYNC_TIMEOUT
```
public static final ActionCode ASYNC_TIMEOUT
```
    Callback to trigger the processing of an async timeout.
  - ASYNC_ERROR
```
public static final ActionCode ASYNC_ERROR
```
    Callback to trigger the error processing.
  - ASYNC_SETTIMEOUT
```
public static final ActionCode ASYNC_SETTIMEOUT
```
    Callback for an async call to AsyncContext.setTimeout(long)
  - ASYNC_IS_ASYNC
```
public static final ActionCode ASYNC_IS_ASYNC
```
    Callback to determine if async processing is in progress.
  - ASYNC_IS_STARTED
```
public static final ActionCode ASYNC_IS_STARTED
```
    Callback to determine if async dispatch is in progress.
  - ASYNC_IS_COMPLETING
```
public static final ActionCode ASYNC_IS_COMPLETING
```
    Call back to determine if async complete is in progress.
  - ASYNC_IS_DISPATCHING
```
public static final ActionCode ASYNC_IS_DISPATCHING
```
    Callback to determine if async dispatch is in progress.
  - ASYNC_IS_TIMINGOUT
```
public static final ActionCode ASYNC_IS_TIMINGOUT
```
    Callback to determine if async is timing out.
  - ASYNC_IS_ERROR
```
public static final ActionCode ASYNC_IS_ERROR
```
    Callback to determine if async is in error.
  - ASYNC_POST_PROCESS
```
public static final ActionCode ASYNC_POST_PROCESS
```
    Callback to trigger post processing. Typically only used during error handling to trigger essential processing that otherwise would be skipped.
  - UPGRADE
```
public static final ActionCode UPGRADE
```
    Callback to trigger the HTTP upgrade process.
  - NB_READ_INTEREST
```
public static final ActionCode NB_READ_INTEREST
```
    Indicator that Servlet is interested in being notified when data is available to be read.
  - NB_WRITE_INTEREST
```
public static final ActionCode NB_WRITE_INTEREST
```
    Used with non-blocking writes to determine if a write is currently allowed (sets passed parameter to true) or not (sets passed parameter to false). If a write is not allowed then callback will be triggered at some future point when write becomes possible again.
  - REQUEST_BODY_FULLY_READ
```
public static final ActionCode REQUEST_BODY_FULLY_READ
```
    Indicates if the request body has been fully read.
  - DISPATCH_READ
```
public static final ActionCode DISPATCH_READ
```
    Indicates that the container needs to trigger a call to onDataAvailable() for the registered non-blocking read listener.
  - DISPATCH_WRITE
```
public static final ActionCode DISPATCH_WRITE
```
    Indicates that the container needs to trigger a call to onWritePossible() for the registered non-blocking write listener.
  - DISPATCH_EXECUTE
```
public static final ActionCode DISPATCH_EXECUTE
```
    Execute any non-blocking dispatches that have been registered via DISPATCH_READ or DISPATCH_WRITE. Typically required when the non-blocking listeners are configured on a thread where the processing wasn't triggered by a read or write event on the socket.
  - IS_PUSH_SUPPORTED
```
public static final ActionCode IS_PUSH_SUPPORTED
```
    Is server push supported and allowed for the current request?
  - PUSH_REQUEST
```
public static final ActionCode PUSH_REQUEST
```
    Push a request on behalf of the client of the current request.
  - IS_TRAILER_FIELDS_READY
```
public static final ActionCode IS_TRAILER_FIELDS_READY
```
    Are the request trailer fields ready to be read? Note that this returns true if it is known that request trailer fields are not supported so an empty collection of trailers can then be read.
  - IS_TRAILER_FIELDS_SUPPORTED
```
public static final ActionCode IS_TRAILER_FIELDS_SUPPORTED
```
    Are HTTP trailer fields supported for the current response? Note that once an HTTP/1.1 response has been committed, it will no longer support trailer fields.
  - CONNECTION_ID
```
public static final ActionCode CONNECTION_ID
```
    Obtain the connection identifier for the request. Used with multiplexing protocols such as HTTP/2.
  - STREAM_ID
```
public static final ActionCode STREAM_ID
```
    Obtain the stream identifier for the request. Used with multiplexing protocols such as HTTP/2.
- Method Detail
  - values
```
public static ActionCode[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (ActionCode c : ActionCode.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static ActionCode valueOf(java.lang.String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
    
    java.lang.NullPointerException - if the argument is null

Enum ActionCode

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

ACK

CLOSE

COMMIT

CLOSE_NOW

CLIENT_FLUSH

IS_ERROR

IS_IO_ALLOWED

DISABLE_SWALLOW_INPUT

REQ_HOST_ATTRIBUTE

REQ_HOST_ADDR_ATTRIBUTE

REQ_PEER_ADDR_ATTRIBUTE

REQ_SSL_ATTRIBUTE

REQ_SSL_CERTIFICATE

REQ_REMOTEPORT_ATTRIBUTE

REQ_LOCALPORT_ATTRIBUTE

REQ_LOCAL_ADDR_ATTRIBUTE

REQ_LOCAL_NAME_ATTRIBUTE

REQ_SET_BODY_REPLAY

AVAILABLE

ASYNC_START

ASYNC_DISPATCH

ASYNC_DISPATCHED

ASYNC_RUN

ASYNC_COMPLETE

ASYNC_TIMEOUT

ASYNC_ERROR

ASYNC_SETTIMEOUT

ASYNC_IS_ASYNC

ASYNC_IS_STARTED

ASYNC_IS_COMPLETING

ASYNC_IS_DISPATCHING

ASYNC_IS_TIMINGOUT

ASYNC_IS_ERROR

ASYNC_POST_PROCESS

UPGRADE

NB_READ_INTEREST

NB_WRITE_INTEREST

REQUEST_BODY_FULLY_READ

DISPATCH_READ

DISPATCH_WRITE

DISPATCH_EXECUTE

IS_PUSH_SUPPORTED

PUSH_REQUEST

IS_TRAILER_FIELDS_READY

IS_TRAILER_FIELDS_SUPPORTED

CONNECTION_ID

STREAM_ID

Method Detail

values

valueOf