Examples of programming5.io.RobustThread

programming5.net.NetworkException
A robust thread is a thread that catches all uncaught exceptions from its runnable target and, by default, restarts the target to avoid fatal crashes. Although the thread terminates if its target run method exits without exceptions, this class is meant for long running or daemon threads. An exception handler interface is provided in order to do exception handling at thread level and/or perform necessary cleanup before either restarting or terminating the thread.
The RobustThread run method is declared final, so a subclass of RobustThread cannot itself be used as a runnable object, as with the Thread base class. Instead, when started, an instance of this class always runs an implementation of the Runnable interface as a target. This is because the run method of the class implements the exception handling and restart functionality. @author Andres Quiroz Hernandez @version 6.0

            }
            receiver = new UDPReceiver(this, socket);
            receiver.start();
        }
        catch (SocketException se) {
            throw new NetworkException("UDPClient: Could not create datagram socket on the given port: " + se.getMessage());
        }
    }

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                try {
                    hostPort = Integer.parseInt(portMsg);
                }
                catch (Exception e) {
                    fixedHost = false;
                    throw new NetworkException("UDPClient: Problem in connection with host: Bad port message: " + e.getMessage());
                }
            }
            catch (IOException ioe) {
                fixedHost = false;
                throw new NetworkException("UDPClient: Could not establish connection: " + ioe.getMessage());
            }
            finally {
                connect = false;
            }
        }

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                DatagramPacket p = new DatagramPacket(packet, packet.length, hostAddress, hostPort);
                try {
                    socket.send(p);
                }
                catch (IOException e) {
                    throw new NetworkException("UDPClient: Could not send message: " + e.getMessage());
                }
            }
        }
        else throw new NetworkException("UDPClient: Could not send message: No remote host specified");
    }

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        if (event instanceof AsynchMessageArrivedEvent) {
            String destAddress = ((AsynchMessageArrivedEvent) event).getSourceURL();
            if (destAddress != null) {
                send(msg, destAddress);
            }
            else throw new NetworkException("UDPClient: Cannot send reply: No message to reply to");
        }
        else throw new NetworkException("UDPClient: Cannot send reply: Arrived event does not contain return address");
    }

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                DatagramPacket p = new DatagramPacket(packet, packet.length, dest, port);
                try {
                    socket.send(p);
                }
                catch (IOException e) {
                    throw new NetworkException("UDPClient: Could not send message: " + e.getMessage());
                }
            }
        } 
        catch (UnknownHostException e) {
            throw new NetworkException("UDPClient: Cannot send message: Unknown host");
        }
    }

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                DatagramPacket p = new DatagramPacket(packet, packet.length, hostAddress, hostPort);
                try {
                    socket.send(p);
                }
                catch (IOException e) {
                    throw new NetworkException("UDPClient: Could not send message: " + e.getMessage());
                }
            }
        }
        else throw new NetworkException("UDPClient: Could not send message: No remote host specified");
    }

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        if (event instanceof AsynchMessageArrivedEvent) {
            String destAddress = ((AsynchMessageArrivedEvent) event).getSourceURL();
            if (destAddress != null) {
                send(msg, destAddress);
            }
            else throw new NetworkException("UDPClient: Cannot send reply: Return address not set");
        }
        else throw new NetworkException("UDPClient: Cannot send reply: Arrived event does not contain return address");
    }

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                Debug.println("UDP packet length: " + Integer.toString(packet.length), "programming5.net.sockets.UDPClient");
                try {
                    socket.send(p);
                }
                catch (IOException e) {
                    throw new NetworkException("UDPClient: Could not send message: " + e.getMessage());
                }
            }
        } 
        catch (UnknownHostException e) {
            throw new NetworkException("UDPClient: Cannot send message: Unknown host");
        }
    }

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        try {
            URI urlObj = new URI(uri);
            this.send(message, urlObj.getHost(), urlObj.getPort());
        }
        catch (URISyntaxException use) {
            throw new NetworkException("UDPClient: Cannot send message: " + use.getMessage());
        }
    }

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        try {
            URI urlObj = new URI(uri);
            this.send(bytesMessage, urlObj.getHost(), urlObj.getPort());
        }
        catch (URISyntaxException use) {
            throw new NetworkException("UDPClient: Cannot send message: " + use.getMessage());
        }
    }

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