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19 package examples.nntp;
20
21 import java.io.IOException;
22 import java.io.PrintWriter;
23 import java.net.SocketException;
24
25 import org.apache.commons.net.PrintCommandListener;
26 import org.apache.commons.net.nntp.Article;
27 import org.apache.commons.net.nntp.NNTPClient;
28 import org.apache.commons.net.nntp.NewsgroupInfo;
29 import org.apache.commons.net.nntp.Threader;
30
31
32 public class MessageThreading {
33 public MessageThreading() {
34 }
35
36 public static void main(String[] args) throws SocketException, IOException {
37
38 if (args.length != 3)
39 usage();
40
41 String hostname = args[0];
42 String user = args[1];
43 String password = args[2];
44
45 NNTPClient client = new NNTPClient();
46 client.addProtocolCommandListener(new PrintCommandListener(new PrintWriter(System.out)));
47 client.connect(hostname);
48
49 if(!client.authenticate(user, password)) {
50 System.out.println("Authentication failed for user " + user + "!");
51 System.exit(1);
52 }
53
54 NewsgroupInfo group = new NewsgroupInfo();
55 client.selectNewsgroup("comp.lang.lisp", group);
56
57 int lowArticleNumber = group.getFirstArticle();
58 int highArticleNumber = lowArticleNumber + 100;
59
60 System.out.println("Retrieving articles between [" + lowArticleNumber + "] and [" + highArticleNumber + "]");
61 Article[] articles = NNTPUtils.getArticleInfo(client, lowArticleNumber, highArticleNumber);
62
63 System.out.println("Building message thread tree...");
64 Threader threader = new Threader();
65 Article root = (Article)threader.thread(articles);
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67 Article.printThread(root, 0);
68
69 }
70
71
72 public static void usage() {
73 System.out.println("Usage: MessageThreading <hostname> <user> <password>");
74 System.exit(0);
75 }
76 }