Ftp File Transfer Application

Article On This Project
Uses: os (Private), socket (Private), tqdm (Private)

Server:

import socket
import tqdm
import os

SERVER_HOST = "0.0.0.0"
SERVER_PORT = 5001
BUFFER_SIZE = 4096
SEPARATOR = "<SEPARATOR>"

s = socket.socket()
s.bind((SERVER_HOST, SERVER_PORT))
s.listen(10)
print(f"[*] Listening as {SERVER_HOST}:{SERVER_PORT}")
print("Waiting for the client to connect... ")
client_socket, address = s.accept()
print(f"[+] {address} is connected.")
received = client_socket.recv(BUFFER_SIZE).decode()
filename, filesize = received.split(SEPARATOR)
filename = os.path.basename(filename)
filesize = int(filesize)
progress = tqdm.tqdm(range(filesize), f"Receiving {filename}", unit="B", unit_scale=True, unit_divisor=1024)
with open(filename, "wb") as f:
  while True:
	  bytes_read = client_socket.recv(BUFFER_SIZE)
	  if not bytes_read:
		  break
	  f.write(bytes_read)
	  progress.update(len(bytes_read))
client_socket.close()
s.close()

Client:

import socket
import tqdm
import os

SEPARATOR = "<SEPARATOR>"
BUFFER_SIZE = 4096

s = socket.socket()
host = "192.168.1.109"
port = 5001
print(f"[+] Connecting to {host}:{port}")
s.connect((host, port))
print("[+] Connected to ", host)
filename = input("File to Transfer : ")
filesize = os.path.getsize(filename)
s.send(f"{filename}{SEPARATOR}{filesize}".encode())
#file = open(filename, 'wb') 

progress = tqdm.tqdm(range(filesize), f"Sending {filename}", unit="B", unit_scale=True, unit_divisor=1024)
with open(filename, "rb") as f:
  while True:
	  bytes_read = f.read(BUFFER_SIZE)
	  if not bytes_read:
		  break
	  s.sendall(bytes_read)
	  progress.update(len(bytes_read))
s.close()

Tips:

You can extend this code by adding more features to meet your own needs. These are only a few of them:

Enable the server to receive multiple files from multiple clients at the same time using threads.
Compress the file before sending it.
Encrypt the file before sending it to ensure no one intercepting it will read it.
To make sure we sent the files properly, use secure hashing algorithms. It will check the checksums of both files — the original sender file and the received file.

Backlinks

Proj (DevLog)

Server:

Client:

Tips: