com.sun.mail.iap

Class Protocol

java.lang.Object

com.sun.mail.iap.Protocol

Direct Known Subclasses:

IMAPProtocol

public class Protocol
extends Object

General protocol handling code for IMAP-like protocols.

The Protocol object is multithread safe.

Author:

John Mani, Max Spivak, Bill Shannon

Field Summary

Fields

Modifier and Type	Field and Description
protected String	host
protected MailLogger	logger
protected String	prefix
protected Properties	props
protected boolean	quote
protected MailLogger	traceLogger

Constructor Summary

Constructors

Constructor and Description
Protocol(InputStream in, PrintStream out, boolean debug) Constructor for debugging.
Protocol(String host, int port, Properties props, String prefix, boolean isSSL, MailLogger logger) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	addResponseHandler(ResponseHandler h) Adds a response handler.
Response[]	command(String command, Argument args) Send a command to the server.
protected void	disconnect() Disconnect.
protected void	finalize() Finalizer.
protected ResponseInputStream	getInputStream() Return the Protocol's InputStream.
protected String	getLocalHost() Get the name of the local host.
protected OutputStream	getOutputStream() Return the Protocol's OutputStream
protected ByteArray	getResponseBuffer() Return a buffer to be used to read a response.
long	getTimestamp() Returns the timestamp.
void	handleResult(Response response) Convenience routine to handle OK, NO, BAD and BYE responses.
boolean	isSSL() Is this connection using an SSL socket?
protected boolean	isTracing() Is protocol tracing enabled?
void	notifyResponseHandlers(Response[] responses) Notify response handlers
protected void	processGreeting(Response r)
Response	readResponse()
void	removeResponseHandler(ResponseHandler h) Removed the specified response handler.
protected void	resumeTracing() Resume protocol tracing, if it was enabled to begin with.
void	simpleCommand(String cmd, Argument args) Convenience routine to handle simple IAP commands that do not have responses specific to that command.
void	startTLS(String cmd) Start TLS on the current connection.
protected boolean	supportsNonSyncLiterals() Returns whether this Protocol supports non-synchronizing literals Default is false.
protected void	suspendTracing() Temporarily turn off protocol tracing, e.g., to prevent tracing the authentication sequence, including the password.
String	writeCommand(String command, Argument args)

Methods inherited from class java.lang.Object

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

Field Detail

host

protected String host

quote

protected boolean quote

logger

protected MailLogger logger

traceLogger

protected MailLogger traceLogger

props

protected Properties props

prefix

protected String prefix

Constructor Detail

Protocol

public Protocol(String host,
        int port,
        Properties props,
        String prefix,
        boolean isSSL,
        MailLogger logger)
         throws IOException,
                ProtocolException

Constructor.

Opens a connection to the given host at given port.

Parameters:

host - host to connect to

port - portnumber to connect to

props - Properties object used by this protocol

prefix - Prefix to prepend to property keys

isSSL - use SSL?

logger - log messages here

Throws:

IOException

ProtocolException

Protocol

public Protocol(InputStream in,
        PrintStream out,
        boolean debug)
         throws IOException

Constructor for debugging.

Throws:

IOException

Method Detail

getTimestamp

public long getTimestamp()

Returns the timestamp.

addResponseHandler

public void addResponseHandler(ResponseHandler h)

Adds a response handler.

removeResponseHandler

public void removeResponseHandler(ResponseHandler h)

Removed the specified response handler.

notifyResponseHandlers

public void notifyResponseHandlers(Response[] responses)

Notify response handlers

processGreeting

protected void processGreeting(Response r)
                        throws ProtocolException

Throws:

ProtocolException

getInputStream

protected ResponseInputStream getInputStream()

Return the Protocol's InputStream.

getOutputStream

protected OutputStream getOutputStream()

Return the Protocol's OutputStream

supportsNonSyncLiterals

protected boolean supportsNonSyncLiterals()

Returns whether this Protocol supports non-synchronizing literals Default is false. Subclasses should override this if required

readResponse

public Response readResponse()
                      throws IOException,
                             ProtocolException

Throws:

IOException

ProtocolException

getResponseBuffer

protected ByteArray getResponseBuffer()

Return a buffer to be used to read a response. The default implementation returns null, which causes a new buffer to be allocated for every response.

Since:

JavaMail 1.4.1

writeCommand

public String writeCommand(String command,
                  Argument args)
                    throws IOException,
                           ProtocolException

Throws:

IOException

ProtocolException

command

public Response[] command(String command,
                 Argument args)

Send a command to the server. Collect all responses until either the corresponding command completion response or a BYE response (indicating server failure). Return all the collected responses.

Parameters:

command - the command

args - the arguments

Returns:

array of Response objects returned by the server

handleResult

public void handleResult(Response response)
                  throws ProtocolException

Convenience routine to handle OK, NO, BAD and BYE responses.

Throws:

ProtocolException

simpleCommand

public void simpleCommand(String cmd,
                 Argument args)
                   throws ProtocolException

Convenience routine to handle simple IAP commands that do not have responses specific to that command.

Throws:

ProtocolException

startTLS

public void startTLS(String cmd)
              throws IOException,
                     ProtocolException

Start TLS on the current connection. cmd is the command to issue to start TLS negotiation. If the command succeeds, we begin TLS negotiation. If the socket is already an SSLSocket this is a nop and the command is not issued.

Throws:

IOException

ProtocolException

isSSL

public boolean isSSL()

Is this connection using an SSL socket?

Returns:

true if using SSL

Since:

JavaMail 1.4.6

disconnect

protected void disconnect()

Disconnect.

getLocalHost

protected String getLocalHost()

Get the name of the local host. The property .localhost overrides .localaddress, which overrides what InetAddress would tell us.

isTracing

protected boolean isTracing()

Is protocol tracing enabled?

suspendTracing

protected void suspendTracing()

Temporarily turn off protocol tracing, e.g., to prevent tracing the authentication sequence, including the password.

resumeTracing

protected void resumeTracing()

Resume protocol tracing, if it was enabled to begin with.

finalize

protected void finalize()
                 throws Throwable

Finalizer.

Overrides:

finalize in class Object

Throws:

Throwable