Package org.jgroups.protocols

Class TCP

java.lang.Object
org.jgroups.stack.Protocol
org.jgroups.protocols.TP
org.jgroups.protocols.BasicTCP
org.jgroups.protocols.TCP
All Implemented Interfaces:
TCPConnectionMap.Receiver
public class TCP extends BasicTCP implements TCPConnectionMap.Receiver
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 outgoing hash table, the associated socket will be reused to send message, otherwise a new socket is created and put in the hash table. When a socket connection breaks or a member is removed from the group, the corresponding items in the incoming and outgoing hash tables will be removed as well.

This functionality is in TCPConnectionMap, which is used by TCP. TCP sends messages using ct.send() and registers with the connection table to receive all incoming messages.

Author:
Bela Ban

  • Constructor Details

    • TCP

      public TCP()

  • Method Details

    • getOpenConnections

      public int getOpenConnections()

    • printConnections

      public String printConnections()
      Specified by:
      printConnections in class BasicTCP

    • setSocketFactory

      public void setSocketFactory(SocketFactory factory)
      Description copied from class: Protocol
      Sets a SocketFactory. Socket factories are typically provided by the transport (TP) or TP.ProtocolAdapter
      Overrides:
      setSocketFactory in class TP
      Parameters:
      factory -

    • send

      public void send(Address dest, byte[] data, int offset, int length) throws Exception
      Specified by:
      send in class BasicTCP
      Throws:
      Exception

    • retainAll

      public void retainAll(Collection<Address> members)
      Specified by:
      retainAll in class BasicTCP

    • start

      public void start() throws Exception
      Description copied from class: TP
      Creates the unicast and multicast sockets and starts the unicast and multicast receiver threads
      Overrides:
      start in class TP
      Throws:
      Exception - Thrown if protocol cannot be started successfully. This will cause the ProtocolStack to fail, so Channel.connect(String) will throw an exception

    • stop

      public void stop()
      Description copied from class: Protocol
      This method is called on a Channel.disconnect(). Stops work (e.g. by closing multicast socket). Will be called from top to bottom. This means that at the time of the method invocation the neighbor protocol below is still working. This method will replace the STOP, STOP_OK, CLEANUP and CLEANUP_OK events. The ProtocolStack guarantees that when this method is called all messages in the down queue will have been flushed
      Overrides:
      stop in class TP

    • handleConnect

      protected void handleConnect() throws Exception
      Overrides:
      handleConnect in class TP
      Throws:
      Exception

    • handleDisconnect

      protected void handleDisconnect()
      Overrides:
      handleDisconnect in class TP

    • createConnectionMap

      protected TCPConnectionMap createConnectionMap(long reaperInterval, long connExpireTime, InetAddress bindAddress, InetAddress externalAddress, int startPort, int endPort) throws Exception
      Parameters:
      reaperInterval -
      connExpireTime -
      bindAddress -
      startPort -
      Returns:
      TCPConnectionMap Subclasses override this method to initialize a different version of ConnectionMap
      Throws:
      Exception

    • getPhysicalAddress

      protected PhysicalAddress getPhysicalAddress()
      Specified by:
      getPhysicalAddress in class TP