synapsi.net
Class Connection

java.lang.Object

  |

  +--synapsi.net.Connection

public class Connection

extends java.lang.Object

Implement connection class for simple access to TPC/IP sockets

Field Summary

static int	STATUS_CONNECTED
static int	STATUS_ERROR
static int	STATUS_NOCONNECTION

Constructor Summary

Connection(java.lang.String sIP, int nPort)
Connection constructor creates socket and connects it to specified client and port

Method Summary

int	close() Close and destroy socket
java.lang.String	readLine(int nTimeout) Reads a line of text from the socket.
int	readUnsignedByte(int nTimeout) Read bytes from socket
int	receive(byte[] bBytes, int nTimeout) Read bytes from socket
int	send(byte[] bBytes) Send bytes to socket
int	send(byte[] bBytes, int lLen) Send bytes to socket
int	writeLine(java.lang.String sLine) Writes a line to the socket.

Methods inherited from class java.lang.Object

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

Field Detail

STATUS_NOCONNECTION

public static final int STATUS_NOCONNECTION

STATUS_CONNECTED

public static final int STATUS_CONNECTED

STATUS_ERROR

public static final int STATUS_ERROR

Constructor Detail

Connection

public Connection(java.lang.String sIP,
                  int nPort)

Connection constructor creates socket and connects it to specified client and port

Parameters:

sIP - address of client

nPort - port to connect to

Method Detail

readLine

public java.lang.String readLine(int nTimeout)

Reads a line of text from the socket. Line terminates with a linefeed (0x0a)

Parameters:

nTimeout - timeout in milliseconds

Returns:

line read from the socket, null if error

writeLine

public int writeLine(java.lang.String sLine)

Writes a line to the socket. If the string does not contain a linefeed at the end, a linefeed is added.

Parameters:

sLine - line to be written

Returns:

number of bytes written or negative if error

send

public int send(byte[] bBytes)

Send bytes to socket

Parameters:

bBytes - bytes to be sent

Returns:

number of bytes written or negative if error

send

public int send(byte[] bBytes,
                int lLen)

Send bytes to socket

Parameters:

bBytes - bytes to be sent

lLen - number of bytes to send

Returns:

number of bytes written, negative if error

receive

public int receive(byte[] bBytes,
                   int nTimeout)

Read bytes from socket

Parameters:

bBytes - buffer to read bytes to

nTimeout - timeout in milliseconds

Returns:

number of bytes read, negative if error

readUnsignedByte

public int readUnsignedByte(int nTimeout)

Read bytes from socket

Parameters:

bBytes - buffer to read bytes to

nTimeout - timeout in milliseconds

Returns:

number of bytes read, negative if error

close

public int close()

Close and destroy socket

Returns:

zero if success, negative if error