Get email with Socket : Socket « Network Protocol « Java

1. Java
2. Network Protocol
3. Socket

Get email with Socket

      

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.Socket;

public class POP3Demo {
  public static void main(String[] args) throws Exception {
    int POP3Port = 110;
    Socket client = new Socket("127.0.0.1", POP3Port);
    InputStream is = client.getInputStream();
    BufferedReader sockin = new BufferedReader(new InputStreamReader(is));
    OutputStream os = client.getOutputStream();
    PrintWriter sockout = new PrintWriter(os, true);
    String cmd = "user Smith";
    sockout.println(cmd);
    String reply = sockin.readLine();
    cmd = "pass ";
    sockout.println(cmd + "popPassword");
    reply = sockin.readLine();
    cmd = "stat";
    sockout.println(cmd);
    reply = sockin.readLine();
    if (reply == null)
      return;
    cmd = "retr 1";
    sockout.println(cmd);
    if (cmd.toLowerCase().startsWith("retr") && reply.charAt(0) == '+')
      do {
        reply = sockin.readLine();
        System.out.println("S:" + reply);
        if (reply != null && reply.length() > 0)
          if (reply.charAt(0) == '.')
            break;
      } while (true);
    cmd = "quit";
    sockout.println(cmd);
    client.close();
  }
}

   
    
    
    
    
    
  

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