org.lsst.ccs.drivers.lighthouse

Class NetTransport

java.lang.Object

org.lsst.ccs.drivers.lighthouse.NetTransport

All Implemented Interfaces:

Transport

public class NetTransport
extends Object
implements Transport

Sends to and receives from a TCP server that owns the device.

Author:

tether

Field Summary

Fields inherited from interface org.lsst.ccs.drivers.lighthouse.Transport

MODBUS_FRAME_TERMINATOR, SERIAL_BAUD, SERIAL_CHARACTERISTICS

Constructor Summary

Constructors

Constructor and Description
NetTransport(String hostname, int portNo) Opens the network socket.

Method Summary

Modifier and Type	Method and Description
void	close() Closes the comm link to the device.
String	receive(Duration timeout) Receives a response from the device.
void	send(String command) Sends a command to the device.

Methods inherited from class java.lang.Object

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

Constructor Detail

NetTransport

public NetTransport(String hostname,
                    int portNo)
             throws org.lsst.ccs.drivers.commons.DriverException

Opens the network socket.

Parameters:

hostname - The server's host name or IP address.

portNo - The server's port number.

Throws:

org.lsst.ccs.drivers.commons.DriverException - if the open fails.

Method Detail

send

public void send(String command)
          throws org.lsst.ccs.drivers.commons.DriverException

Sends a command to the device.

Specified by:

send in interface Transport

Parameters:

command - The command string, w/o the final CRLF, to send.

Throws:

org.lsst.ccs.drivers.commons.DriverException - for any other problem.

receive

public String receive(Duration timeout)
               throws org.lsst.ccs.drivers.commons.DriverException

Receives a response from the device.

Specified by:

receive in interface Transport

Parameters:

timeout - timeout.getSeconds() is how long to wait for the start of a response.

Returns:

The response string stripped of the final CRLF.

Throws:

org.lsst.ccs.drivers.commons.DriverTimeoutException - if no response bytes arrive before the deadline.

org.lsst.ccs.drivers.commons.DriverException - for any other problem.

close

public void close()

Closes the comm link to the device.

Specified by:

close in interface Transport