In this client-server project, a client can request a file or a set of files from the server. The server searches for the file/s in its file directory rooted at its ~ and returns the file/files requested to the client (or an appropriate message otherwise). Multiple clients can connect to the serverw from different machines and can request file/s as per the commands listed below.
The server, mirror1 and mirror2 and the client processes run on different machines/terminals and communicate using sockets only. We also alternate between the serverw24, mirror1 and mirror2 at an interval of every 3 new connections.

• View Implementation - Client Server Communication using Sockets, in Action!

• List of Client Commands:
  
  ◦ dirlist -a:
  the serverw24 must return the list of subdirectories/folders(only) under its home directory in the alphabetical order and the client must print the same
  ex: clientw24$ dirlist -a
  
  ◦ dirlist -t:
  the serverw24 must return the list of subdirectories/folders(only) under its home directories in the order in which they were created (with the oldest created directory listed first) and the client must print the same
  ex: clientw24$ dirlist -t
  
  ◦ w24fn filename
  If the file filename is found in its file directory tree rooted at ~, the serverw24 must return the filename, size(in bytes), date created and file permissions to the client and the client prints the received information on its terminal.
  
  ◦ w24fz size1 size2
  The serverw24 must return to the client temp.tar.gz that contains all the files in the directory tree rooted at its ~ whose file-size in bytes is >=size1 and <=size2.
  size1 < = size2 (size1>= 0 and size2>=0)
  
  ◦ w24ft //up to 3 different file types
  the serverw24 must return temp.tar.gz that contains all the files in its directory tree rooted at ~ belonging to the file type/s listed in the extension list, else the serverw24 sends the message “No file found” to the client (which is printed on the client terminal by the client)
  
  ◦ w24fdb date
  The serverw24 must return to the client temp.tar.gz that contains all the files in the directory tree rooted at ~ whose date of creation is <=date
  
  ◦ w24fda date
  The serverw24 must return to the client temp.tar.gz that contains all the files in the directory tree rooted at ~ whose date of creation is >=date
  
  

• Technologies Used:
  ◦ C
  ◦ Socket Programming, pipes, forks, system calls, library functions