org.javagroups.protocols
Class TCP
java.lang.Object
|
+--org.javagroups.stack.Protocol
|
+--org.javagroups.protocols.TCP
- All Implemented Interfaces:
- ConnectionTable.ConnectionListener, ConnectionTable.Receiver
- public class TCP
- extends Protocol
- implements ConnectionTable.Receiver, ConnectionTable.ConnectionListener
TCP based protocol. Creates a server socket, which gives us the local address of this group member. For
each accept() on the server socket, a new thread is created that listens on the socket.
For each outgoing message m, if m.dest is in the ougoing hashtable, the associated socket will be reused
to send message, otherwise a new socket is created and put in the hashtable.
When a socket connection breaks or a member is removed from the group, the corresponding items in the
incoming and outgoing hashtables will be removed as well.
This functionality is in ConnectionTable, which isT used by TCP. TCP sends messages using ct.send() and
registers with the connection table to receive all incoming messages.
- Author:
- Bela Ban
Fields inherited from class org.javagroups.stack.Protocol |
down_handler, down_prot, down_queue, down_thread, observer, props, stack, up_handler, up_prot, up_queue, up_thread |
Constructor Summary |
TCP()
|
Method Summary |
void |
connectionClosed(Address peer_addr)
|
void |
connectionOpened(Address peer_addr)
|
void |
down(Event evt)
Sent to destination(s) using the ConnectionTable class. |
java.lang.String |
getName()
|
void |
receive(Message msg)
|
boolean |
setProperties(java.util.Properties props)
Setup the Protocol instance acording to the configuration string |
void |
startUpHandler()
DON'T REMOVE ! This prevents the up-handler thread to be created, which essentially is superfluous:
messages are received from the network rather than from a layer below. |
void |
startWork()
|
java.lang.String |
toString()
|
void |
up(Event evt)
An event was received from the layer below. |
Methods inherited from class org.javagroups.stack.Protocol |
getDownProtocol, getDownQueue, getProperties, getUpProtocol, getUpQueue, init, passDown, passUp, providedDownServices, providedUpServices, receiveDownEvent, receiveUpEvent, requiredDownServices, requiredUpServices, setDownProtocol, setObserver, setPropertiesInternal, setProtocolStack, setUpProtocol, startDownHandler, stopInternal |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
TCP
public TCP()
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object
getName
public java.lang.String getName()
- Overrides:
getName
in class Protocol
startUpHandler
public void startUpHandler()
- DON'T REMOVE ! This prevents the up-handler thread to be created, which essentially is superfluous:
messages are received from the network rather than from a layer below.
- Overrides:
startUpHandler
in class Protocol
up
public void up(Event evt)
- Description copied from class:
Protocol
- An event was received from the layer below. Usually the current layer will want to examine
the event type and - depending on its type - perform some computation
(e.g. removing headers from a MSG event type, or updating the internal membership list
when receiving a VIEW_CHANGE event).
Finally the event is either a) discarded, or b) an event is sent down
the stack using
passDown()
or c) the event (or another event) is sent up
the stack using passUp()
.
- Overrides:
up
in class Protocol
down
public void down(Event evt)
- Sent to destination(s) using the ConnectionTable class.
- Overrides:
down
in class Protocol
startWork
public void startWork()
receive
public void receive(Message msg)
- Specified by:
receive
in interface ConnectionTable.Receiver
connectionOpened
public void connectionOpened(Address peer_addr)
- Specified by:
connectionOpened
in interface ConnectionTable.ConnectionListener
connectionClosed
public void connectionClosed(Address peer_addr)
- Specified by:
connectionClosed
in interface ConnectionTable.ConnectionListener
setProperties
public boolean setProperties(java.util.Properties props)
- Setup the Protocol instance acording to the configuration string
- Overrides:
setProperties
in class Protocol
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