Examples of org.apache.commons.net.pop3.POP3Client

org.apache.commons.net.pop3.POP3Client
The POP3Client class implements the client side of the Internet POP3 Protocol defined in RFC 1939. All commands are supported, including the APOP command which requires MD5 encryption. See RFC 1939 for more details on the POP3 protocol.
Rather than list it separately for each method, we mention here that every method communicating with the server and throwing an IOException can also throw a {@link org.apache.commons.net.MalformedServerReplyException}, which is a subclass of IOException. A MalformedServerReplyException will be thrown when the reply received from the server deviates enough from the protocol specification that it cannot be interpreted in a useful manner despite attempts to be as lenient as possible.

@author Daniel F. Savarese @see POP3MessageInfo @see org.apache.commons.net.io.DotTerminatedMessageReader @see org.apache.commons.net.MalformedServerReplyException


    messages.put("headers", RestV2IT.addMessage(EMAIL_REGULAR, labelId));
    messages.put("attach", RestV2IT.addMessage(EMAIL_LARGE_ATT, labelId));


    // initialize POP3 client
    POP3Client client = new POP3Client();
    client.connect(POP3_HOST, POP3_PORT);


    // Login
    boolean loginSuccess = client.login(TEST_ACCOUNT, TEST_PASSWORD);
    assertThat(loginSuccess, is(true));


    // LIST all messages
    POP3MessageInfo[] info = client.listMessages();
    assertThat(info.length, equalTo(2));


    // DELE message 1
    boolean deleteResult = client.deleteMessage(1);
    assertThat(deleteResult, is(true));


    // LIST remaining
    info = client.listMessages();
    assertThat(info.length, equalTo(1));


    // DELE message 1 again
    deleteResult = client.deleteMessage(1);
    assertThat(deleteResult, is(false));
    
    // LIST remaining
    info = client.listMessages();
    assertThat(info.length, equalTo(1));


    // DELE message 2
    deleteResult = client.deleteMessage(2);
    assertThat(deleteResult, is(true));


    info = client.listMessages();
    assertThat(info.length, equalTo(0));


    // QUIT so the messages get expunged
    boolean logoutSuccess = client.logout();
    assertThat(logoutSuccess, is(true));


    // reconnect
    client.connect(POP3_HOST, POP3_PORT);


    // Login
    loginSuccess = client.login(TEST_ACCOUNT, TEST_PASSWORD);
    assertThat(loginSuccess, is(true));


    info = client.listMessages();
    assertThat(info.length, equalTo(0));


    logoutSuccess = client.logout();
    assertThat(logoutSuccess, is(true));
  }

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    Integer labelId = ReservedLabels.POP3.getId();
    RestV2IT.addMessage(EMAIL_REGULAR, labelId);


    // initialize POP3 client
    POP3Client client = new POP3Client();
    client.connect(POP3_HOST, POP3_PORT);


    // Login
    boolean loginSuccess = client.login(TEST_ACCOUNT, TEST_PASSWORD);
    assertThat(loginSuccess, is(true));


    // LIST all messages
    POP3MessageInfo[] info = client.listMessages();
    assertThat(info.length, equalTo(1));


    // DELE message 1
    boolean deleteResult = client.deleteMessage(1);
    assertThat(deleteResult, is(true));


    // LIST remaining
    info = client.listMessages();
    assertThat(info.length, equalTo(0));


    // RSET. After this the deleted mark should be removed again
    boolean resetRestult = client.reset();
    assertThat(resetRestult, is(true));


    // LIST all messages
    info = client.listMessages();
    assertThat(info.length, equalTo(1));


    // Logout
    boolean logoutSuccess = client.logout();
    assertThat(logoutSuccess, is(true));
  }

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    Integer labelId = ReservedLabels.POP3.getId();
    RestV2IT.addMessage(EMAIL_REGULAR, labelId);
    RestV2IT.addMessage(EMAIL_LARGE_ATT, labelId);


    // initialize POP3 client
    POP3Client client = new POP3Client();
    client.connect(POP3_HOST, POP3_PORT);


    boolean loginSuccess = client.login(TEST_ACCOUNT, TEST_PASSWORD);
    assertThat(loginSuccess, is(true));


    POP3MessageInfo info = client.status();
    assertThat(info.size, equalTo((int) (mailSizeRegular + mailSizeAttach)));
    assertThat(info.number, equalTo(2));


    // Logout
    boolean logoutSuccess = client.logout();
    assertThat(logoutSuccess, is(true));
  }

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    Integer labelId = ReservedLabels.POP3.getId();
    RestV2IT.addMessage(EMAIL_SIMPLE, labelId);


    // initialize POP3 client
    POP3Client client = new POP3Client();
    client.connect(POP3_HOST, POP3_PORT);


    // Login
    boolean loginSuccess = client.login(TEST_ACCOUNT, TEST_PASSWORD);
    assertThat(loginSuccess, is(true));


    // RETR message
    Reader retrMessage = client.retrieveMessage(1);
    assertThat(retrMessage, notNullValue());


    checkMessage(EMAIL_SIMPLE, retrMessage);
    retrMessage.close();
    
        // RETR non-existing message
    retrMessage = client.retrieveMessage(10);
        assertThat(retrMessage, nullValue());
        
        // Delete and RETR the message again
    boolean deleteResult = client.deleteMessage(1);
    assertThat(deleteResult, is(true));
    
    retrMessage = client.retrieveMessage(1);
        assertThat(retrMessage, nullValue());
  }

View Full Code Here


    Integer labelId = ReservedLabels.POP3.getId();
    RestV2IT.addMessage(EMAIL_SIMPLE, labelId);


    // initialize POP3 client
    POP3Client client = new POP3Client();
    client.connect(POP3_HOST, POP3_PORT);


    // Login
    boolean loginSuccess = client.login(TEST_ACCOUNT, TEST_PASSWORD);
    assertThat(loginSuccess, is(true));


    // TOP message with all lines
    Reader topMessage = client.retrieveMessageTop(1, 1000);
    assertThat(topMessage, notNullValue());
    checkMessage(EMAIL_SIMPLE, topMessage);
    topMessage.close();


    // TOP message with 5 lines
    topMessage = client.retrieveMessageTop(1, 5);
    assertThat(topMessage, notNullValue());
    checkMessage(EMAIL_SIMPLE, topMessage, 5);
    topMessage.close();


    // TOP non-existing message
    topMessage = client.retrieveMessageTop(10, 10);
    assertThat(topMessage, nullValue());


    // Delete and TOP the message again
    boolean deleteResult = client.deleteMessage(1);
    assertThat(deleteResult, is(true));


    topMessage = client.retrieveMessageTop(1, 1000);
    assertThat(topMessage, nullValue());
  }

View Full Code Here


    messages.put("headers", RestV2IT.addMessage(EMAIL_REGULAR, labelId));
    messages.put("attach", RestV2IT.addMessage(EMAIL_LARGE_ATT, labelId));


    // initialize POP3 client
    POP3Client client = new POP3Client();
    client.connect(POP3_HOST, POP3_PORT);


    boolean loginSuccess = client.login(TEST_ACCOUNT, TEST_PASSWORD);
    assertThat(loginSuccess, is(true));


    // LIST all messages
    POP3MessageInfo[] info = client.listMessages();
    assertThat(info.length, equalTo(2));
    assertThat((int) mailSizeAttach, equalTo(info[0].size));
    assertThat((int) mailSizeRegular, equalTo(info[1].size));
    assertThat(info[0].number, equalTo(1));
    assertThat(info[1].number, equalTo(2));


    // LIST one message
    POP3MessageInfo msgInfo = client.listMessage(1);
    assertThat((int) mailSizeAttach, equalTo(msgInfo.size));
    assertThat(msgInfo.number, equalTo(1));


    // LIST message that does not exist
    msgInfo = client.listMessage(10);
    assertThat(msgInfo, nullValue());


    // UIDL all messages
    info = client.listUniqueIdentifiers();
    assertThat(info.length, equalTo(2));
    assertThat(info[0].identifier,
        equalTo(Base64UUIDUtils.encode(messages.get("attach"))));
    assertThat(info[1].identifier,
        equalTo(Base64UUIDUtils.encode(messages.get("headers"))));
    assertThat(info[0].number, equalTo(1));
    assertThat(info[1].number, equalTo(2));


    // UIDL one message
    msgInfo = client.listUniqueIdentifier(1);
    assertThat(msgInfo.identifier,
        equalTo(Base64UUIDUtils.encode(messages.get("attach"))));
    assertThat(msgInfo.number, equalTo(1));


    // UIDL message that does not exist
    msgInfo = client.listUniqueIdentifier(10);
    assertThat(msgInfo, nullValue());


    boolean logoutSuccess = client.logout();
    assertThat(logoutSuccess, is(true));
  }

View Full Code Here


    public static final void main(String[] args)
    {
        int message;
        String server, username, password;
        POP3Client pop3;
        Reader reader;
        POP3MessageInfo[] messages;


        if (args.length < 3)
        {
            System.err.println(
                "Usage: messages <pop3 server hostname> <username> <password>");
            System.exit(1);
        }


        server = args[0];
        username = args[1];
        password = args[2];


        pop3 = new POP3Client();
        // We want to timeout if a response takes longer than 60 seconds
        pop3.setDefaultTimeout(60000);


        try
        {
            pop3.connect(server);
        }
        catch (IOException e)
        {
            System.err.println("Could not connect to server.");
            e.printStackTrace();
            System.exit(1);
        }


        try
        {
            if (!pop3.login(username, password))
            {
                System.err.println("Could not login to server.  Check password.");
                pop3.disconnect();
                System.exit(1);
            }


            messages = pop3.listMessages();


            if (messages == null)
            {
                System.err.println("Could not retrieve message list.");
                pop3.disconnect();
                System.exit(1);
            }
            else if (messages.length == 0)
            {
                System.out.println("No messages");
                pop3.logout();
                pop3.disconnect();
                System.exit(1);
            }


            for (message = 0; message < messages.length; message++)
            {
                reader = pop3.retrieveMessageTop(messages[message].number, 0);


                if (reader == null)
                {
                    System.err.println("Could not retrieve message header.");
                    pop3.disconnect();
                    System.exit(1);
                }


                printMessageInfo(new BufferedReader(reader), messages[message].number);
            }


            pop3.logout();
            pop3.disconnect();
        }
        catch (IOException e)
        {
            e.printStackTrace();
            System.exit(1);

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    this.host = host;
    this.port = port;
    if (ssl) {
      this.client = new POP3SClient("SSL", true);
    } else {
      this.client = new POP3Client();
    }
    this.client.setDefaultTimeout(300000);
  }

View Full Code Here

        String password = args[2];


        String proto = args.length > 3 ? args[3] : null;
        boolean implicit = args.length > 4 ? Boolean.parseBoolean(args[4]) : false;


        POP3Client pop3;


        if (proto != null) {
            System.out.println("Using secure protocol: "+proto);
            pop3 = new POP3SClient(proto, implicit);
        } else {
            pop3 = new POP3Client();
        }
        System.out.println("Connecting to server "+server+" on "+pop3.getDefaultPort());


        // We want to timeout if a response takes longer than 60 seconds
        pop3.setDefaultTimeout(60000);


        // suppress login details
        pop3.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out), true));


        try
        {
            pop3.connect(server);
        }
        catch (IOException e)
        {
            System.err.println("Could not connect to server.");
            e.printStackTrace();
            System.exit(1);
        }


        try
        {
            if (!pop3.login(username, password))
            {
                System.err.println("Could not login to server.  Check password.");
                pop3.disconnect();
                System.exit(1);
            }


            POP3MessageInfo[] messages = pop3.listMessages();


            if (messages == null)
            {
                System.err.println("Could not retrieve message list.");
                pop3.disconnect();
                return;
            }
            else if (messages.length == 0)
            {
                System.out.println("No messages");
                pop3.logout();
                pop3.disconnect();
                return;
            }


            for (POP3MessageInfo msginfo : messages) {
                BufferedReader reader = (BufferedReader) pop3.retrieveMessageTop(msginfo.number, 0);


                if (reader == null) {
                    System.err.println("Could not retrieve message header.");
                    pop3.disconnect();
                    System.exit(1);
                }
                printMessageInfo(reader, msginfo.number);
            }


            pop3.logout();
            pop3.disconnect();
        }
        catch (IOException e)
        {
            e.printStackTrace();
            return;

View Full Code Here


    public static final void main(String[] args)
    {
        int message;
        String server, username, password;
        POP3Client pop3;
        Reader reader;
        POP3MessageInfo[] messages;


        if (args.length < 3)
        {
            System.err.println(
                "Usage: messages <pop3 server hostname> <username> <password>");
            System.exit(1);
        }


        server = args[0];
        username = args[1];
        password = args[2];


        pop3 = new POP3Client();
        // We want to timeout if a response takes longer than 60 seconds
        pop3.setDefaultTimeout(60000);


        try
        {
            pop3.connect(server);
        }
        catch (IOException e)
        {
            System.err.println("Could not connect to server.");
            e.printStackTrace();
            System.exit(1);
        }


        try
        {
            if (!pop3.login(username, password))
            {
                System.err.println("Could not login to server.  Check password.");
                pop3.disconnect();
                System.exit(1);
            }


            messages = pop3.listMessages();


            if (messages == null)
            {
                System.err.println("Could not retrieve message list.");
                pop3.disconnect();
                System.exit(1);
            }
            else if (messages.length == 0)
            {
                System.out.println("No messages");
                pop3.logout();
                pop3.disconnect();
                System.exit(1);
            }


            for (message = 0; message < messages.length; message++)
            {
                reader = pop3.retrieveMessageTop(messages[message].number, 0);


                if (reader == null)
                {
                    System.err.println("Could not retrieve message header.");
                    pop3.disconnect();
                    System.exit(1);
                }


                printMessageInfo(new BufferedReader(reader), messages[message].number);
            }


            pop3.logout();
            pop3.disconnect();
        }
        catch (IOException e)
        {
            e.printStackTrace();
            System.exit(1);

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