[NET-373] NNTP Listgroups not working - broken server implementation

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0
• Fix Version/s: 3.0
• Component/s: NNTP
• Labels: ioexception java listnewsgroups nntp nntpclient

Environment

Eclipse Build id: 20110218-0911

• Assignee: Unassigned
• Reporter: Bas
• Created: 14/Mar/11 21:20
• Updated: 04/Jun/11 19:26
• Resolved: 17/Mar/11 17:00

Description

In addition to NET-276 I tried to get all newsgroups from my server with the example script. Unfortunately I got with underneath code the following error:

As can be imagined this is a pay server so it has more than 31 groups. Unfortunately I have no idea how to get those printed underneath, probably also a bug!

Output

 
201 reader.xsnews.nl (frontend-F04-05) Server Ready - [e-mail]
AUTHINFO USER *******
381 PASS required
AUTHINFO PASS *********
281 Ok
Authentication succeeded
LIST ACTIVE alt.fan.*
215 Newsgroups in form "group high low flags".
 000000000000000 000000000000000 y
! 000000000000023 000000000000001 y
!!! 000000000000001 000000000000001 y
!vaux23 000000000000001 000000000000001 y
" 000000000000001 000000000000001 y
"0.test 000000000000001 000000000000001 y
": 000000000000001 000000000000001 y
"Phyllis 000000000000001 000000000000001 y
"alt.binaries.boneless 000000000001053 000000000001002 y
"alt.binaries.multimedia 000000000002422 000000000000004 y
"alt.binaries.multimedia.erotica 000000000000001 000000000000001 y
"alt.binaries.multimedia.erotica.lesbians 000000000000002 000000000000001 y
"alt.binaries.multimedia.scifi; 000000000000001 000000000000001 y
"alt.binaries.sounds.mp3.lounge 000000000000001 000000000000001 y
"alt.binaries.sounds.mp3.reggae 000000000000001 000000000000001 y
"alt.binaries.tv.canadian 000000000000002 000000000000001 y
"alt.internet 000000000000001 000000000000001 y
"alt.politics 000000000000002 000000000000001 y
"alt.religion.christian.east 000000000000001 000000000000001 y
"[e-mail]" 000000000000001 000000000000001 y
#alt.binaries.department.pron 000000022885781 000000000000001 y
( 000000000000007 000000000000005 y
([e-mail] 000000000000001 000000000000001 y
(cross 000000000000001 000000000000001 y
* 000000000000006 000000000000006 y
*.binaries.* 000000000000001 000000000000001 y
+a.uninarch 000000000000353 000000000000353 y
- 000000000000002 000000000000002 y
-- 000000000000005 000000000000001 y
------------------ 000000000000004 000000000000002 y
-adams 000000000000001 000000000000001 y
31
LIST ACTIVE alt.fan.*
00000000000000 000000000000000 y
java.io.IOException: 00000000000000 000000000000000 y
	at org.apache.commons.net.nntp.NNTPClient.iterateNewsgroupListing(NNTPClient.java:1043)
	at org.apache.commons.net.nntp.NNTPClient.iterateNewsgroups(NNTPClient.java:1059)
	at ListNewsgroups_1.main(ListNewsgroups_1.java:89)
	at Testing_NNTP.main(Testing_NNTP.java:25){panel}

Code:

Bar.java

// Some comments here
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

//package examples.nntp;

import java.io.IOException;
import java.io.PrintWriter;

import org.apache.commons.net.PrintCommandListener;
import org.apache.commons.net.nntp.NNTPClient;
import org.apache.commons.net.nntp.NewsgroupInfo;

import javax.net.ssl.SSLSocketFactory;

/***
 * This is a trivial example using the NNTP package to approximate the
 * Unix newsgroups command.  It merely connects to the specified news
 * server and issues fetches the list of newsgroups stored by the server.
 * On servers that store a lot of newsgroups, this command can take a very
 * long time (listing upwards of 30,000 groups).
 * <p>
 ***/

public final class ListNewsgroups_1
{

    public final static void main(String[] args)
    {
        if (args.length < 1)
        {
            System.err.println("Usage: newsgroups newsserver [pattern]");
            return;
        }

        NNTPClient client = new NNTPClient();
        client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
        //String pattern = args.length >= 2 ? args[1] : "";
        //String pattern = "";
        String pattern = "alt.fan.*";
        try
        {
            
        	if (args[4] == "SSL")
        	{
        		client.setSocketFactory(SSLSocketFactory.getDefault());
            } 
        	else 
        	{
        		//factory = createSocket(host, port);
            }

			client.connect(args[0],Integer.parseInt(args[3]));

			// AUTHINFO USER/AUTHINFO PASS
            boolean success = client.authenticate(args[1], args[2]);
            if (success) {
                System.out.println("Authentication succeeded");
            } else {
                System.out.println("Authentication failed, error =" + client.getReplyString());
            }


            int j = 0;
            try {
                for(String s : client.iterateNewsgroupListing(pattern)) {
                    j++;
                    System.out.println(s);
                }
            } catch (IOException e1) {
                e1.printStackTrace();
            }
            System.out.println(j);

            j = 0;
            for(NewsgroupInfo n : client.iterateNewsgroups(pattern)) {
                j++;
                System.out.println(n.getNewsgroup());
            }
            System.out.println(j);
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            try
            {
                if (client.isConnected())
                    client.disconnect();
            }
            catch (IOException e)
            {
                System.err.println("Error disconnecting from server.");
                e.printStackTrace();
                System.exit(1);
            }
        }
    }
}

If I missed something let me know and I will try to supply you with necessary data