things.data.transport.smtp
Class CleanSMTPClient

java.lang.Object
  things.data.transport.smtp.CleanSMTPClient

All Implemented Interfaces:

Debuggable, StringPoster, SMTPClient

public class CleanSMTPClient
extends java.lang.Object
implements SMTPClient, Debuggable

This is a super clean SMTP client. No bs.

The client will propagate any InterruptedExceptions like a good THINGs citizen, though it will then mark the client as BAD and it will no longer work--through exceptions for any call thereafter.

Version:

1.0

Version History

EPG - Adapted from another project - 23 NOV 06
 

Author:

Erich P. Gatejen

Field Summary

static int	CONNECTION_RETRIES
static int	CONNECTION_TIMEOUT

Fields inherited from interface things.data.transport.smtp.SMTPClient

ACTION_ABORTED, ACTION_NOT_TAKEN, ACTION_OK, BAD_COMMAND_SEQUENCE, CODE_211, CODE_214, CODE_215, CODE_220, CODE_221, CODE_250, CODE_251, CODE_354, CODE_421, CODE_450, CODE_451, CODE_452, CODE_500, CODE_501, CODE_502, CODE_503, CODE_504, CODE_550, CODE_551, CODE_552, CODE_553, CODE_554, CODE_FAIL_THRESHOLD, COMMAND_NOT_IMPLEMENTED, COMMAND_NOT_IMPLEMENTED_FOR_PARAMETER, HELP_MESSAGE, INSUFFICIENT_STORAGE, MAILBOX_NAME_NOT_ALLOWED, MAILBOX_UNAVAILABLE, SERVICE_CLOSING_TRANSMISSION_CHANNEL, SERVICE_NOT_AVAILABLE, SERVICE_READY, START_MAIL_INPUT, STORAGE_ALLOCATION_EXCEEDED, SYNTAX_ERROR_IN_ARGUMENTS, SYSTEM_STATUS, TRANSACTION_FAILED, UNRECOGNIZED_COMMAND, USER_NOT_LOCAL, USER_NOT_LOCAL_WILL_FORWARD

Constructor Summary

CleanSMTPClient(Logger theLogger)
Create a new client.

CleanSMTPClient(Logger theLogger, java.lang.String name)
Create a new client with an imposed name.

Method Summary

Reply	connect(java.lang.String connectAddress, int connectPort) Start a connection.
void	debuggingOff() Turn debugging off.
void	debuggingOn() Turn debugging on.
boolean	debuggingState() Get the current debugging state.
Reply	disconnect() Start a connection.
Reply	done() Quit the client.
void	flush() Try to flush.
java.lang.String	getName() Get client name.
SMTPState	getState() Get the state.
Reply	login(java.lang.String hostname) HELO with the hostname--no authentication.
void	post(java.lang.String message) Post as a message.
void	postit(java.lang.String message) Post as a message.
Reply	recipient(java.lang.String recipientText) Set the recipient using RCPT TO.
Reply	recipient(java.lang.String recipientText, DSN dsn) Set the recipient using RCPT TO.
Reply	reset() RESET the connection.
Reply	sendData(java.io.InputStream... ios) Send DATA.
Reply	sender(java.lang.String senderText) Set the sender using MAIL FROM.
Reply	sender(java.lang.String senderText, DSN dsn) Set the sender using MAIL FROM.
void	setSocketRetries(int retries) Number of times a socket read will be retried after a timeout before completely giving up. The default value is CONNECTION_RETRIES.
void	setTimeout(int timeout) Set the socket timeout for each connection.

Methods inherited from class java.lang.Object

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

Field Detail

CONNECTION_TIMEOUT

public static final int CONNECTION_TIMEOUT

See Also:

Constant Field Values

CONNECTION_RETRIES

public static final int CONNECTION_RETRIES

See Also:

Constant Field Values

Constructor Detail

CleanSMTPClient

public CleanSMTPClient(Logger theLogger,
                       java.lang.String name)

Create a new client with an imposed name. This will not connect.

Parameters:

theLogger - the logger to use. It will be quiet unless you start debugging.

name - the client's name. It will be slightly altered for uniqueness.

CleanSMTPClient

public CleanSMTPClient(Logger theLogger)

Create a new client. This will not connect.

Parameters:

theLogger - the logger to use. It will be quiet unless you start debugging.

Method Detail

getName

public java.lang.String getName()

Get client name.

Specified by:

getName in interface SMTPClient

Returns:

the clients name.

getState

public SMTPState getState()

Get the state.

Specified by:

getState in interface SMTPClient

Returns:

State

setTimeout

public void setTimeout(int timeout)

Set the socket timeout for each connection. A timeout may be retried, depending on the value set with setSocketRetries(int).
The default value is CONNECTION_TIMEOUT.

It will take effect whenever a new connection is established.

Specified by:

setTimeout in interface SMTPClient

Parameters:

timeout - the timeout in milliseconds.

setSocketRetries

public void setSocketRetries(int retries)

Number of times a socket read will be retried after a timeout before completely giving up.
The default value is CONNECTION_RETRIES.

It will take effect whenever a new operation is started.

Specified by:

setSocketRetries in interface SMTPClient

Parameters:

retries - Number of retries. Zero or a negative number is the same as no retries.

connect

public Reply connect(java.lang.String connectAddress,
                     int connectPort)
              throws ThingsException,
                     java.lang.InterruptedException

Start a connection. Return a code. It will throw an ERROR is already connect, but will leave the connection intact.

Specified by:

connect in interface SMTPClient

Parameters:

connectAddress -

connectPort -

Returns:

ACTION_OK if it was ok.

Throws:

ThingsException - will always be fatal at this point.

java.lang.InterruptedException

disconnect

public Reply disconnect()
                 throws ThingsException,
                        java.lang.InterruptedException

Start a connection. Return a code.

Specified by:

disconnect in interface SMTPClient

Returns:

The reply.

Throws:

ThingsException - which will never happen, since we'll just abandon the bad connection.

java.lang.InterruptedException

login

public Reply login(java.lang.String hostname)
            throws ThingsException,
                   java.lang.InterruptedException

HELO with the hostname--no authentication. A state problem will cause a FAULT. A transmission problem is just an ERROR. It will transition to LOGIN_COMPLETE only of the reply is an ACTION_OK.

Specified by:

login in interface SMTPClient

Parameters:

hostname -

Returns:

the reply.

Throws:

ThingsException

java.lang.InterruptedException

sender

public Reply sender(java.lang.String senderText)
             throws ThingsException,
                    java.lang.InterruptedException

Set the sender using MAIL FROM. It must be at LOGIN_COMPLETE.

Specified by:

sender in interface SMTPClient

Parameters:

senderText - as a valid SMTP address.

Returns:

A reply.

Throws:

ThingsException - if not ready for MAIL FROM or actual transmission problem.

java.lang.InterruptedException

sender

public Reply sender(java.lang.String senderText,
                    DSN dsn)
             throws ThingsException,
                    java.lang.InterruptedException

Set the sender using MAIL FROM. It must be at LOGIN_COMPLETE. Implementation of the DSN is up to the client. It may choose to ignore it.

Specified by:

sender in interface SMTPClient

Parameters:

senderText - as a valid SMTP address.

dsn - command. If null, it will be ignored.

Returns:

A reply.

Throws:

ThingsException - if not ready for MAIL FROM or actual transmission problem.

java.lang.InterruptedException

recipient

public Reply recipient(java.lang.String recipientText)
                throws ThingsException,
                       java.lang.InterruptedException

Set the recipient using RCPT TO. It must be at MAILFROM_DONE.

Specified by:

recipient in interface SMTPClient

Parameters:

recipientText - as a valid SMTP address.

Returns:

A reply.

Throws:

ThingsException - if not ready for RCPT TO or actual transmission problem.

java.lang.InterruptedException

recipient

public Reply recipient(java.lang.String recipientText,
                       DSN dsn)
                throws ThingsException,
                       java.lang.InterruptedException

Set the recipient using RCPT TO. It must be at MAILFROM_DONE.

Specified by:

recipient in interface SMTPClient

Parameters:

recipientText - as a valid SMTP address.

dsn - command. If null, it will be ignored.

Returns:

A reply.

Throws:

ThingsException - if not ready for RCPT TO or actual transmission problem.

java.lang.InterruptedException

reset

public Reply reset()
            throws ThingsException,
                   java.lang.InterruptedException

RESET the connection. This will return the state to LOGIN_COMPLETE, as long as it has already been logged in.

Specified by:

reset in interface SMTPClient

Returns:

the reply.

Throws:

ThingsException - if the connection is made and logged in.

java.lang.InterruptedException

sendData

public Reply sendData(java.io.InputStream... ios)
               throws ThingsException,
                      java.lang.InterruptedException

Send DATA. It must be at RCPTTO_DONE. It will do the appropriate dot doubling and CRLF management.

Specified by:

sendData in interface SMTPClient

Parameters:

ios - Stream to send. You handle any buffering. Null entries are allowed and ignored.

Returns:

the reply

Throws:

ThingsException

java.lang.InterruptedException

done

public Reply done()
           throws ThingsException,
                  java.lang.InterruptedException

Quit the client. This will return it to FRESH. It will never throw an exception, but may return a bad reply.

Specified by:

done in interface SMTPClient

Returns:

a reply

Throws:

ThingsException

java.lang.InterruptedException

debuggingOn

public void debuggingOn()

Turn debugging on. Logs with debug level priority will be passed.

Specified by:

debuggingOn in interface Debuggable

debuggingOff

public void debuggingOff()

Turn debugging off. Logs with debug level priority will not be passed.

Specified by:

debuggingOff in interface Debuggable

debuggingState

public boolean debuggingState()

Get the current debugging state.

Specified by:

debuggingState in interface Debuggable

Returns:

debugging state

post

public void post(java.lang.String message)
          throws ThingsException

Post as a message.

Specified by:

post in interface StringPoster

Parameters:

message - String to post

Throws:

ThingsException

postit

public void postit(java.lang.String message)

Post as a message. Best effort. Ignore errors.

Specified by:

postit in interface StringPoster

Parameters:

message - String to post

flush

public void flush()

Try to flush. Never error no matter what.

Specified by:

flush in interface StringPoster