The org.snmp4j.transport
classes are capable of sending and
receiving byte messages to and from a network using transport mapping specific
transport protocol. All SNMP4J transport mappings have to implement the
org.snmp4j.TransportMapping
interface. SNMP4J supports two
transport mappings for the transport protocols UDP and TCP:
DefaultUdpTransportMapping
class.
DefaultTcpTransportMapping
using the java.nio
package.
Additional transport mappings can be easily added. It is sufficient to
implement the org.snmp4j.TransportMapping
interface and add
an instance of that class to the Snmp
(or MessageDispatcher
)
object. To be able to lookup a transport mapping by an Address
class via the TransportMappings
(as Snmp
does
for notification listeners), a transport mapping has to be registered
in a transport mapping registration file. The default file is
transports.properties
in the org.snmp4j.transport
package. To use a different file, set the system property
org.snmp4j.transportMappings
.
Connection-oriented transport mappings like TCP should implement
the ConnectionOrientedTransportMapping
interface to support
MessageLengthDecoder
and TransportStateListener
.
The following UML class diagram shows the classes of the
org.snmp4j.transport
package and their relationships
(relationships to other packages are not shown):