Package org.jgroups.protocols

Class TCP

  • All Implemented Interfaces:
    Receiver, AdditionalJmxObjects, DiagnosticsHandler.ProbeHandler
    public class TCP
extends BasicTCP
    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 TcpServer, 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

    • Field Detail

      • buffered_input_stream_size

        protected int buffered_input_stream_size

      • buffered_output_stream_size

        protected int buffered_output_stream_size

      • log_accept_error

        protected boolean log_accept_error

    • Constructor Detail

      • TCP

        public TCP()

    • Method Detail

      • getBufferedInputStreamSize

        public int getBufferedInputStreamSize()

      • setBufferedInputStreamSize

        public TCP setBufferedInputStreamSize​(int buffered_input_stream_size)

      • getBufferedOutputStreamSize

        public int getBufferedOutputStreamSize()

      • setBufferedOutputStreamSize

        public TCP setBufferedOutputStreamSize​(int buffered_output_stream_size)

      • logAcceptError

        public boolean logAcceptError()

      • logAcceptError

        public TCP logAcceptError​(boolean l)

      • getOpenConnections

        public int getOpenConnections()

      • clearConnections

        public TCP clearConnections()

      • setSocketFactory

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

      • send

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

      • retainAll

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

      • start

        public void start()
           throws java.lang.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:
        java.lang.Exception - Thrown if protocol cannot be started successfully. This will cause the ProtocolStack to fail, so JChannel.connect(String) will throw an exception

      • stop

        public void stop()
        Description copied from class: Protocol
        This method is called on a JChannel.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 java.lang.Exception
        Overrides:
        handleConnect in class TP
        Throws:
        java.lang.Exception

      • handleDisconnect

        protected void handleDisconnect()
        Overrides:
        handleDisconnect in class TP