com.dalsemi.shell.server.serial
Class SerialServer

java.lang.Object
  |
  +--java.lang.Thread
        |
        +--com.dalsemi.shell.server.Server
              |
              +--com.dalsemi.shell.server.serial.SerialServer

public class SerialServer

extends Server

A server that uses a serial port to listen for user connections. For each connection made, a Serial session is created. All command processing is handled by the session, not this server.

Fields inherited from class com.dalsemi.shell.server.Server

sessions, shutdown

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

SerialServer(java.lang.String portName, int speed, int dataBits, int stopBits, int parity)
Prepares the server to listen on an arbitrary port.

Method Summary

protected Session	acceptNewSession() Listens on the serial port for connection requests.
void	broadcast(java.lang.String sendThis) Displays this message to all sessions initiated by this server.
void	closeAllPorts() Closes and releases ownership of this server's serial port.

Methods inherited from class com.dalsemi.shell.server.Server

checkForNewSessions, getConnectedUsers, run, sessionEnded, shutDown

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getName, getPriority, getThreadGroup, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

SerialServer

public SerialServer(java.lang.String portName,
                    int speed,
                    int dataBits,
                    int stopBits,
                    int parity)
             throws java.lang.Exception

Prepares the server to listen on an arbitrary port. The server will not be started and no connections will be accepted until its run() method is executed.

Parameters:

portName - the name of the serial port

speed - the baud rate for the serial port communications

dataBits - the data bits used by the serial port communications

stopBits - the stop bits used by the serial port communications

parity - the parity of the serial port communications

Throws:

java.lang.Exception - if the serial port could not be opened or any of the specified parameters are invalid

Method Detail

acceptNewSession

protected Session acceptNewSession()

Listens on the serial port for connection requests. Once a request is made, it creates, initializes, and returns a new SerialSession to handle that request. This method will block until a connection is made. Since only one connection is allowed at any time on the serial server, if a connection already exists, this method suspends the server. The server will be resumed when the current connection terminates.

Returns:

a new SerialSession

Overrides:

acceptNewSession in class Server

closeAllPorts

public void closeAllPorts()
                   throws java.io.IOException

Closes and releases ownership of this server's serial port.

Overrides:

closeAllPorts in class Server

broadcast

public void broadcast(java.lang.String sendThis)

Displays this message to all sessions initiated by this server.

Parameters:

sendThis - the message to display

Overrides:

broadcast in class Server