Name: dbT83986 Date: 03/11/99


When making a socket connection to *certain* servers, BufferedReader.readLine() (or read() and read(char[], int, int] for that matter)
fails to recognize EOF.

One such server is Sun's FTP server (ftp.sun.com). Observe the following code.

package MyUtils;

import java.io.*;
import java.net.*;

public class FTPTest
{
  public static void main(String[] args)
  {
    try {
      Socket sock = new Socket("ftp.sun.com", 21);
      sock.setSoTimeout(10000);
      BufferedReader reader = new BufferedReader(new
        InputStreamReader(sock.getInputStream()));

      String line = reader.readLine();
      System.out.println("line: [" + line + "]");
      while (line != null) {
        line = reader.readLine();
        System.out.println("line: [" + line + "]");
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }
    finally {
    }
  }
}

---

This code generates this output:

line: [220-Welcome to Sun Microsystems Corporate FTP Server.]
line: [220-]
line: [220 ftp FTP server (ftpd Wed Oct 30 23:31:06 PST 1996) ready.]
java.io.InterruptedIOException: Read timed out
        at java.net.SocketInputStream.read(SocketInputStream.java:84)
        at java.net.SocketInputStream.read(SocketInputStream.java:67)
        at java.io.InputStreamReader.fill(Compiled Code)
        at java.io.InputStreamReader.read(InputStreamReader.java:227)
        at java.io.BufferedReader.fill(Compiled Code)
        at java.io.BufferedReader.readLine(Compiled Code)
        at PDUtils.FTPTest.main(Compiled Code)
(Review ID: 55258)
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