Package org.apache.commons.net.imap

Class IMAP

java.lang.Object

org.apache.commons.net.SocketClient

org.apache.commons.net.imap.IMAP

Direct Known Subclasses:

IMAPClient

public class IMAP
extends SocketClient

The IMAP class provides the basic the functionality necessary to implement your own IMAP client.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	IMAP.IMAPChunkListener	Implement this interface and register it via setChunkListener(IMAPChunkListener) in order to get access to multi-line partial command responses.
static enum	IMAP.IMAPState

Field Summary

Fields

Modifier and Type	Field	Description
protected static final String	__DEFAULT_ENCODING	The default control socket encoding.
protected BufferedWriter	__writer
protected BufferedReader	_reader
static final int	DEFAULT_PORT	The default IMAP port (RFC 3501).
static final IMAP.IMAPChunkListener	TRUE_CHUNK_LISTENER	Implements IMAP.IMAPChunkListener to returns true but otherwise does nothing.

Fields inherited from class org.apache.commons.net.SocketClient

_defaultPort_, _hostname_, _input_, _output_, _serverSocketFactory_, _socket_, _socketFactory_, _timeout_, connectTimeout, NETASCII_EOL, remoteInetSocketAddress

Constructor Summary

Constructors

Constructor	Description
IMAP()	The default IMAPClient constructor.

Method Summary

Modifier and Type	Method	Description
protected void	_connectAction_()	Performs connection initialization and sets state to IMAP.IMAPState.NOT_AUTH_STATE.
void	disconnect()	Disconnects the client from the server, and sets the state to DISCONNECTED_STATE.
boolean	doCommand(IMAPCommand command)	Sends a command to the server and return whether successful.
boolean	doCommand(IMAPCommand command, String args)	Sends a command and arguments to the server and return whether successful.
protected void	fireReplyReceived(int replyCode, String ignored)	Overrides SocketClient.fireReplyReceived(int, String) to avoid creating the reply string if there are no listeners to invoke.
protected String	generateCommandID()	Generates a new command ID (tag) for a command.
String	getReplyString()	Returns the reply to the last command sent to the server.
String[]	getReplyStrings()	Returns an array of lines received as a reply to the last command sent to the server.
IMAP.IMAPState	getState()	Returns the current IMAP client state.
int	sendCommand(String command)	Sends a command with no arguments to the server and returns the reply code.
int	sendCommand(String command, String args)	Sends a command an arguments to the server and returns the reply code.
int	sendCommand(IMAPCommand command)	Sends a command with no arguments to the server and returns the reply code.
int	sendCommand(IMAPCommand command, String args)	Sends a command and arguments to the server and returns the reply code.
int	sendData(String command)	Sends data to the server and returns the reply code.
void	setChunkListener(IMAP.IMAPChunkListener listener)	Sets the current chunk listener.
protected void	setState(IMAP.IMAPState state)	Sets IMAP client state.

Methods inherited from class org.apache.commons.net.SocketClient

addProtocolCommandListener, applySocketAttributes, checkOpenOutputStream, connect, connect, connect, connect, connect, connect, createCommandSupport, fireCommandSent, getCharset, getCharsetName, getCommandSupport, getConnectTimeout, getDefaultPort, getDefaultTimeout, getKeepAlive, getLocalAddress, getLocalPort, getProxy, getReceiveBufferSize, getRemoteAddress, getRemoteInetSocketAddress, getRemotePort, getSendBufferSize, getServerSocketFactory, getSoLinger, getSoTimeout, getTcpNoDelay, isAvailable, isConnected, removeProtocolCommandListener, setCharset, setConnectTimeout, setDefaultPort, setDefaultTimeout, setKeepAlive, setProxy, setReceiveBufferSize, setSendBufferSize, setServerSocketFactory, setSocketFactory, setSoLinger, setSoTimeout, setTcpNoDelay, verifyRemote

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_PORT

public static final int DEFAULT_PORT

The default IMAP port (RFC 3501).

See Also:

• Constant Field Values

__DEFAULT_ENCODING

protected static final String __DEFAULT_ENCODING

The default control socket encoding.

TRUE_CHUNK_LISTENER

public static final IMAP.IMAPChunkListener TRUE_CHUNK_LISTENER

Implements IMAP.IMAPChunkListener to returns true but otherwise does nothing.

This is intended for use with a suitable ProtocolCommandListener. If the IMAP response contains multiple-line data, the protocol listener will be called for each multi-line chunk. The accumulated reply data will be cleared after calling the listener. If the response is very long, this can significantly reduce memory requirements. The listener will also start receiving response data earlier, as it does not have to wait for the entire response to be read.

The ProtocolCommandListener must be prepared to accept partial responses. This should not be a problem for listeners that just log the input.

Since:

3.4

See Also:

• setChunkListener(IMAPChunkListener)

__writer

protected BufferedWriter __writer

_reader

protected BufferedReader _reader

Constructor Details

IMAP

public IMAP()

The default IMAPClient constructor. Initializes the state to DISCONNECTED_STATE.

Method Details

_connectAction_

protected void _connectAction_()
                        throws IOException

Performs connection initialization and sets state to IMAP.IMAPState.NOT_AUTH_STATE.

Overrides:

_connectAction_ in class SocketClient

Throws:

IOException - (SocketException) if a problem occurs with the socket

disconnect

public void disconnect()
                throws IOException

Disconnects the client from the server, and sets the state to DISCONNECTED_STATE. The reply text information from the last issued command is voided to allow garbage collection of the memory used to store that information.

Overrides:

disconnect in class SocketClient

Throws:

IOException - If there is an error in disconnecting.

doCommand

public boolean doCommand(IMAPCommand command)
                  throws IOException

Sends a command to the server and return whether successful.

Parameters:

command - The IMAP command to send (one of the IMAPCommand constants).

Returns:

true if the command was successful

Throws:

IOException - on error

doCommand

public boolean doCommand(IMAPCommand command,
 String args)
                  throws IOException

Sends a command and arguments to the server and return whether successful.

Parameters:

command - The IMAP command to send (one of the IMAPCommand constants).

args - The command arguments.

Returns:

true if the command was successful

Throws:

IOException - on error

fireReplyReceived

protected void fireReplyReceived(int replyCode,
 String ignored)

Overrides SocketClient.fireReplyReceived(int, String) to avoid creating the reply string if there are no listeners to invoke.

Overrides:

fireReplyReceived in class SocketClient

Parameters:

replyCode - passed to the listeners

ignored - the string is only created if there are listeners defined.

Since:

3.4

See Also:

• getReplyString()

generateCommandID

protected String generateCommandID()

Generates a new command ID (tag) for a command.

Returns:

a new command ID (tag) for an IMAP command.

getReplyString

public String getReplyString()

Returns the reply to the last command sent to the server. The value is a single string containing all the reply lines including newlines.

Returns:

The last server response.

getReplyStrings

public String[] getReplyStrings()

Returns an array of lines received as a reply to the last command sent to the server. The lines have end of lines truncated.

Returns:

The last server response.

getState

public IMAP.IMAPState getState()

Returns the current IMAP client state.

Returns:

The current IMAP client state.

sendCommand

public int sendCommand(IMAPCommand command)
                throws IOException

Sends a command with no arguments to the server and returns the reply code.

Parameters:

command - The IMAP command to send (one of the IMAPCommand constants).

Returns:

The server reply code (see IMAPReply).

Throws:

IOException - on error

sendCommand

public int sendCommand(IMAPCommand command,
 String args)
                throws IOException

Sends a command and arguments to the server and returns the reply code.

Parameters:

command - The IMAP command to send (one of the IMAPCommand constants).

args - The command arguments.

Returns:

The server reply code (see IMAPReply).

Throws:

IOException - on error

sendCommand

public int sendCommand(String command)
                throws IOException

Sends a command with no arguments to the server and returns the reply code.

Parameters:

command - The IMAP command to send.

Returns:

The server reply code (see IMAPReply).

Throws:

IOException - on error

sendCommand

public int sendCommand(String command,
 String args)
                throws IOException

Sends a command an arguments to the server and returns the reply code.

Parameters:

command - The IMAP command to send.

args - The command arguments.

Returns:

The server reply code (see IMAPReply).

Throws:

IOException - on error

sendData

public int sendData(String command)
             throws IOException

Sends data to the server and returns the reply code.

Parameters:

command - The IMAP command to send.

Returns:

The server reply code (see IMAPReply).

Throws:

IOException - on error

setChunkListener

public void setChunkListener(IMAP.IMAPChunkListener listener)

Sets the current chunk listener. If a listener is registered and the implementation returns true, then any registered PrintCommandListener instances will be invoked with the partial response and a status of IMAPReply.PARTIAL to indicate that the final reply code is not yet known.

Parameters:

listener - the class to use, or null to disable

Since:

3.4

See Also:

• TRUE_CHUNK_LISTENER

setState

protected void setState(IMAP.IMAPState state)

Sets IMAP client state. This must be one of the _STATE constants.

Parameters:

state - The new state.