import sun.net.nntp.*;
import java.io.*;


public class DumpHeaders {

  public static void main(String[] args) {

    String server = "news";
    String newsgroup = "";

    try {
      newsgroup = args[0];
    }
    catch (ArrayIndexOutOfBoundsException e) {
      System.err.println("Usage: java DumpNews newsgroup server");
      System.exit(1);
    }

    try {
      server = args[1];
    }
    catch (ArrayIndexOutOfBoundsException e) {

    }

    try {
      NntpClient nc = new NntpClient(server);
      nc.setGroup(newsgroup);
      NewsgroupInfo ni = nc.getGroup(newsgroup);
      int first = ni.firstArticle;
      int last = ni.lastArticle;
      for (int i = first; i <= last; i++) {
        try {
          InputStream theHeader = nc.getHeader(i);
          BufferedReader br = new BufferedReader(new 
           InputStreamReader(theHeader));
          String theLine;
          System.out.println("-----------------\nHeader " + i);
          while ((theLine = br.readLine()) != null) {
            System.out.println(theLine);
          }
        }
        catch (NntpProtocolException ne) {
          // probably a cancelled article, just skip it
        }
      }

    }
    catch (IOException e) {
      System.err.println(e);
    }

  }

}