title: Multiple Passive connections to vsftpd server
body: <p>I am trying to upload multiple files simultaneously. after establishing a data connection in passive mode, my client sending another "pasv" request to the vsftp server to get server and port value. so that i can connect to the vsftpd using the new set of port and ip values. but server(vsftpd) is not responding for this second pasv command.  </p>
  
  <p>here is the sequence of commands my client is sending after login.</p>
  
  <p>PASV                 ------> to server</p>
  
  <p>227 entering passive
   mode (x,x,x,x,d,d)   &lt;------ from server</p>
  
  <p>STOR xyz.txt        -------> to server</p>
  
  <p>150 OK to send data  &lt;------- from server</p>
  
  <p>...... creating socket and connecting to the server using x,x,x,x,d.d.</p>
  
  <p>After that again i am sending pasv to get another port for second connection 
  PASV                -------> to server</p>
  
  <p>But server is not sending anything back.</p>
  
  <p>can anyone help on this issue.</p>
  
  <p>thanks
  -Alexander</p>