Package uk.co.westhawk.snmp.net

Interface ContextSocketFace

All Known Implementing Classes:

StandardSocket, TCPSocket

public interface ContextSocketFace

The interface for the different type of sockets.

Version:

$Revision: 1.12 $ $Date: 2006/02/09 14:30:19 $

Author:

Tim Panton

Field Summary

Fields

Modifier and Type	Field	Description
static final String	version_id

Method Summary

Modifier and Type	Method	Description
void	close()	Closes this socket.
void	create(int port, String bindAddr)	Creates the socket.
void	create(String host, int port, String bindAddr)	Creates the socket.
String	getLocalSocketAddress()	Returns the address of the endpoint this socket is bound to, or null if it is not bound yet.
String	getReceivedFromHostAddress()	Returns the IP address of the (latest) host of the packet we received.
String	getRemoteSocketAddress()	Returns the address of the endpoint this socket is connected to, or null if it is unconnected.
String	getSendToHostAddress()	Returns the IP address of the host we sent the packet to.
StreamPortItem	receive(int maxRecvSize)	Receives a packet from this socket.
void	send(byte[] packet)	Sends a packet from this socket.

Field Details

version_id

static final String version_id

See Also:

• Constant Field Values

Method Details

create

void create(int port,
 String bindAddr)
     throws IOException

Creates the socket. This socket is used when listening for incoming requests or traps. Use only one (1) of the two create methods.

Parameters:

port - The local port number were we receive (listen for) packets

bindAddr - The local address the server will bind to when listening

Throws:

IOException

See Also:

• create(String, int, String)

create

void create(String host,
 int port,
 String bindAddr)
     throws IOException

Creates the socket. This socket is used to send out our requests. Use only one (1) of the two create methods.

Parameters:

host - The name of the host that is to receive our packets

port - The port number of the host

bindAddr - The local address the server will bind to when sending packets

Throws:

IOException

See Also:

• create(int, String)

getSendToHostAddress

String getSendToHostAddress()

Returns the IP address of the host we sent the packet to. Only applicable when sending requests, not when (only) listening for incoming requests or traps.

Returns:

The IP address, or null when the hostname cannot be determined

See Also:

• getReceivedFromHostAddress()

getReceivedFromHostAddress

String getReceivedFromHostAddress()

Returns the IP address of the (latest) host of the packet we received. Only applicable when anything has been received. When sending a request, this will in most cases be the same host where we sent the original packet to.

Returns:

The IP address, or null when the hostname cannot be determined

See Also:

• getSendToHostAddress()

getLocalSocketAddress

String getLocalSocketAddress()

Returns the address of the endpoint this socket is bound to, or null if it is not bound yet.

Since:

4_14

getRemoteSocketAddress

String getRemoteSocketAddress()

Returns the address of the endpoint this socket is connected to, or null if it is unconnected.

Since:

4_14

receive

StreamPortItem receive(int maxRecvSize)
                throws IOException

Receives a packet from this socket. The StreamPortItem object contains the host and port the packet came from.

Parameters:

maxRecvSize - the maximum number of bytes to receive

Returns:

the packet

Throws:

IOException

send

void send(byte[] packet)
   throws IOException

Sends a packet from this socket. It can throw an "java.io.IOException: Invalid argument" when the bind address is incorrect for some reason.

Parameters:

packet - the packet

Throws:

IOException

close

void close()

Closes this socket.