Example usage for java.net Socket close

List of usage examples for java.net Socket close

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Introduction

In this page you can find the example usage for java.net Socket close.

Prototype

public synchronized void close() throws IOException

Source Link

Document

Closes this socket.

Usage

From source file:POP3Demo.java

public static void main(String[] args) throws Exception {
    int POP3Port = 110;
    Socket client = new Socket("127.0.0.1", POP3Port);
    InputStream is = client.getInputStream();
    BufferedReader sockin = new BufferedReader(new InputStreamReader(is));
    OutputStream os = client.getOutputStream();
    PrintWriter sockout = new PrintWriter(os, true);
    String cmd = "user Smith";
    sockout.println(cmd);/* www  .  j a v  a2s.  c om*/
    String reply = sockin.readLine();
    cmd = "pass ";
    sockout.println(cmd + "popPassword");
    reply = sockin.readLine();
    cmd = "stat";
    sockout.println(cmd);
    reply = sockin.readLine();
    if (reply == null)
        return;
    cmd = "retr 1";
    sockout.println(cmd);
    if (cmd.toLowerCase().startsWith("retr") && reply.charAt(0) == '+')
        do {
            reply = sockin.readLine();
            System.out.println("S:" + reply);
            if (reply != null && reply.length() > 0)
                if (reply.charAt(0) == '.')
                    break;
        } while (true);
    cmd = "quit";
    sockout.println(cmd);
    client.close();
}

From source file:EchoClient.java

 public static void main(String[] args) throws IOException {

   ServerSocket serverSocket = null;
   try {/* ww w . j a  v  a 2 s. c o m*/
      serverSocket = new ServerSocket(4444);
   } catch (IOException e) {
      System.err.println("Could not listen on port: 4444.");
      System.exit(1);
   }

   Socket clientSocket = null;
   try {
      clientSocket = serverSocket.accept();
   } catch (IOException e) {
      System.err.println("Accept failed.");
      System.exit(1);
   }

   PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
   BufferedReader in = new BufferedReader(new InputStreamReader(
         clientSocket.getInputStream()));
   String inputLine, outputLine;
   KnockKnockProtocol kkp = new KnockKnockProtocol();

   outputLine = kkp.processInput(null);
   out.println(outputLine);

   while ((inputLine = in.readLine()) != null) {
      outputLine = kkp.processInput(inputLine);
      out.println(outputLine);
      if (outputLine.equals("Bye."))
         break;
   }
   out.close();
   in.close();
   clientSocket.close();
   serverSocket.close();
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    SSLServerSocketFactory ssf = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
    SSLServerSocket ss = (SSLServerSocket) ssf.createServerSocket(8080);
    ss.setNeedClientAuth(true);//  w  w  w.  j a va 2 s.  c o m

    while (true) {
        try {
            Socket s = ss.accept();
            OutputStream out = s.getOutputStream();
            BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));
            String line = null;
            while (((line = in.readLine()) != null) && (!("".equals(line)))) {
                System.out.println(line);
            }
            System.out.println("");

            StringBuffer buffer = new StringBuffer();
            buffer.append("<HTML>\n");
            buffer.append("<HEAD><TITLE>HTTPS Server</TITLE></HEAD>\n");
            buffer.append("<BODY>\n");
            buffer.append("<H1>Success!</H1>\n");
            buffer.append("</BODY>\n");
            buffer.append("</HTML>\n");

            String string = buffer.toString();
            byte[] data = string.getBytes();
            out.write("HTTP/1.0 200 OK\n".getBytes());
            out.write(new String("Content-Length: " + data.length + "\n").getBytes());
            out.write("Content-Type: text/html\n\n".getBytes());
            out.write(data);
            out.flush();

            out.close();
            in.close();
            s.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    Socket socket = new Socket("localhost", 12900);
    System.out.println("Started client  socket at " + socket.getLocalSocketAddress());
    BufferedReader socketReader = new BufferedReader(new InputStreamReader(socket.getInputStream()));
    BufferedWriter socketWriter = new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));
    BufferedReader consoleReader = new BufferedReader(new InputStreamReader(System.in));

    String promptMsg = "Please enter a  message  (Bye  to quit):";
    String outMsg = null;/* w ww .jav a 2s.c om*/

    System.out.print(promptMsg);
    while ((outMsg = consoleReader.readLine()) != null) {
        if (outMsg.equalsIgnoreCase("bye")) {
            break;
        }
        // Add a new line to the message to the server,
        // because the server reads one line at a time.
        socketWriter.write(outMsg);
        socketWriter.write("\n");
        socketWriter.flush();

        // Read and display the message from the server
        String inMsg = socketReader.readLine();
        System.out.println("Server: " + inMsg);
        System.out.println(); // Print a blank line
        System.out.print(promptMsg);
    }
    socket.close();
}

From source file:Who.java

public static void main(String[] v) {
    Socket s = null;
    PrintWriter out = null;/* w  ww  .j  a v a 2  s .  com*/
    BufferedReader in = null;
    try {
        // Connect to port 79 (the standard finger port) on the host.
        String hostname = "www.java2s.com";
        s = new Socket(hostname, 79);
        // Set up the streams
        out = new PrintWriter(new OutputStreamWriter(s.getOutputStream()));
        in = new BufferedReader(new InputStreamReader(s.getInputStream()));

        // Send a blank line to the finger server, telling it that we want
        // a listing of everyone logged on instead of information about an
        // individual user.
        out.print("\n");
        out.flush(); // Send it out

        // Now read the server's response
        // The server should send lines terminated with \n or \r.
        String line;
        while ((line = in.readLine()) != null) {
            System.out.println(line);
        }
        System.out.println("Who's Logged On: " + hostname);
    } catch (IOException e) {
        System.out.println("Who's Logged On: Error");
    }
    // Close the streams!
    finally {
        try {
            in.close();
            out.close();
            s.close();
        } catch (Exception e) {
        }
    }
}

From source file:HTTPServer.java

public static void main(String[] args) throws Exception {

    ServerSocket sSocket = new ServerSocket(1777);
    while (true) {
        System.out.println("Waiting for a client...");
        Socket newSocket = sSocket.accept();
        System.out.println("accepted the socket");

        OutputStream os = newSocket.getOutputStream();
        BufferedReader br = new BufferedReader(new InputStreamReader(newSocket.getInputStream()));

        String inLine = null;//from  w w  w.j av a 2s . c om
        while (((inLine = br.readLine()) != null) && (!(inLine.equals("")))) {
            System.out.println(inLine);
        }
        System.out.println("");

        StringBuffer sb = new StringBuffer();
        sb.append("<html>\n");
        sb.append("<head>\n");
        sb.append("<title>Java \n");
        sb.append("</title>\n");
        sb.append("</head>\n");
        sb.append("<body>\n");
        sb.append("<H1>HTTPServer Works!</H1>\n");
        sb.append("</body>\n");
        sb.append("</html>\n");

        String string = sb.toString();

        byte[] byteArray = string.getBytes();

        os.write("HTTP/1.0 200 OK\n".getBytes());
        os.write(new String("Content-Length: " + byteArray.length + "\n").getBytes());
        os.write("Content-Type: text/html\n\n".getBytes());

        os.write(byteArray);
        os.flush();

        os.close();
        br.close();
        newSocket.close();
    }

}

From source file:flink.iso8583.example.Client.java

public static void main(String[] args) throws Exception {
    Random rng = new Random(System.currentTimeMillis());
    log.debug("Reading config");
    mfact = ConfigParser.createFromClasspathConfig("flink/iso8583/example/config.xml");
    mfact.setAssignDate(true);//from   w ww  . j ava2 s  .  co m
    mfact.setTraceNumberGenerator(new SimpleTraceGenerator((int) (System.currentTimeMillis() % 10000)));
    log.debug("Connecting to server");
    Socket sock = new Socket("localhost", 9999);
    //Send 10 messages, then wait for the responses
    Client reader = new Client(sock);
    reader.start();
    for (int i = 0; i < 10; i++) {
        IsoMessage req = mfact.newMessage(0x200);
        req.setValue(4, amounts[rng.nextInt(amounts.length)], IsoType.AMOUNT, 0);
        req.setValue(12, req.getObjectValue(7), IsoType.TIME, 0);
        req.setValue(13, req.getObjectValue(7), IsoType.DATE4, 0);
        req.setValue(15, req.getObjectValue(7), IsoType.DATE4, 0);
        req.setValue(17, req.getObjectValue(7), IsoType.DATE4, 0);
        req.setValue(37, new Long(System.currentTimeMillis() % 1000000), IsoType.NUMERIC, 12);
        req.setValue(41, data[rng.nextInt(data.length)], IsoType.ALPHA, 16);
        req.setValue(48, data[rng.nextInt(data.length)], IsoType.LLLVAR, 0);
        pending.put(req.getField(11).toString(), req);
        log.debug("Sending request " + req.getField(11));
        req.write(sock.getOutputStream(), 2);
    }
    log.debug("Waiting for responses");
    while (pending.size() > 0 && sock.isConnected()) {
        sleep(500);
    }
    reader.interrupt();
    sock.close();
    log.debug("DONE.");
}

From source file:EchoClient.java

 public static void main(String[] args) throws IOException {

     Socket echoSocket = null;
     PrintWriter out = null;/*from   w w  w . ja va  2  s.c om*/
     BufferedReader in = null;

     try {
         echoSocket = new Socket("taranis", 7);
         out = new PrintWriter(echoSocket.getOutputStream(), true);
         in = new BufferedReader(new InputStreamReader(
                                     echoSocket.getInputStream()));
     } catch (UnknownHostException e) {
         System.err.println("Don't know about host: taranis.");
         System.exit(1);
     } catch (IOException e) {
         System.err.println("Couldn't get I/O for "
                            + "the connection to: taranis.");
         System.exit(1);
     }

BufferedReader stdIn = new BufferedReader(
                                new InputStreamReader(System.in));
String userInput;

while ((userInput = stdIn.readLine()) != null) {
    out.println(userInput);
    System.out.println("echo: " + in.readLine());
}

out.close();
in.close();
stdIn.close();
echoSocket.close();
 }

From source file:ComplexCompany.java

public static void main(String args[]) throws Exception {
    Socket socket1;
    int portNumber = 1777;
    String str = "";

    socket1 = new Socket(InetAddress.getLocalHost(), portNumber);

    ObjectInputStream ois = new ObjectInputStream(socket1.getInputStream());

    ObjectOutputStream oos = new ObjectOutputStream(socket1.getOutputStream());

    ComplexCompany comp = new ComplexCompany("A");
    ComplexEmployee emp0 = new ComplexEmployee("B", 1000);
    comp.addPresident(emp0);//from ww  w. ja  v  a  2  s  .  co  m

    ComplexDepartment sales = new ComplexDepartment("C");
    ComplexEmployee emp1 = new ComplexEmployee("D", 1200);
    sales.addManager(emp1);
    comp.addDepartment(sales);

    ComplexDepartment accounting = new ComplexDepartment("E");
    ComplexEmployee emp2 = new ComplexEmployee("F", 1230);
    accounting.addManager(emp2);
    comp.addDepartment(accounting);

    ComplexDepartment maintenance = new ComplexDepartment("Maintenance");
    ComplexEmployee emp3 = new ComplexEmployee("Greg Hladlick", 1020);
    maintenance.addManager(emp3);
    comp.addDepartment(maintenance);

    oos.writeObject(comp);

    while ((str = (String) ois.readObject()) != null) {
        System.out.println(str);
        oos.writeObject("bye");

        if (str.equals("bye"))
            break;
    }

    ois.close();
    oos.close();
    socket1.close();
}

From source file:Connect.java

public static void main(String[] args) {
    try { // Handle exceptions below
        // Get our command-line arguments
        String hostname = args[0];
        int port = Integer.parseInt(args[1]);
        String message = "";
        if (args.length > 2)
            for (int i = 2; i < args.length; i++)
                message += args[i] + " ";

        // Create a Socket connected to the specified host and port.
        Socket s = new Socket(hostname, port);

        // Get the socket output stream and wrap a PrintWriter around it
        PrintWriter out = new PrintWriter(s.getOutputStream());

        // Sent the specified message through the socket to the server.
        out.print(message + "\r\n");
        out.flush(); // Send it now.

        // Get an input stream from the socket and wrap a BufferedReader
        // around it, so we can read lines of text from the server.
        BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream()));

        // Before we start reading the server's response tell the socket
        // that we don't want to wait more than 3 seconds
        s.setSoTimeout(3000);//from w  w w.ja  va  2  s. c  o  m

        // Now read lines from the server until the server closes the
        // connection (and we get a null return indicating EOF) or until
        // the server is silent for 3 seconds.
        try {
            String line;
            while ((line = in.readLine()) != null)
                // If we get a line
                System.out.println(line); // print it out.
        } catch (SocketTimeoutException e) {
            // We end up here if readLine() times out.
            System.err.println("Timeout; no response from server.");
        }

        out.close(); // Close the output stream
        in.close(); // Close the input stream
        s.close(); // Close the socket
    } catch (IOException e) { // Handle IO and network exceptions here
        System.err.println(e);
    } catch (NumberFormatException e) { // Bad port number
        System.err.println("You must specify the port as a number");
    } catch (ArrayIndexOutOfBoundsException e) { // wrong # of args
        System.err.println("Usage: Connect <hostname> <port> message...");
    }
}