30/09/2024, 11:30 HIRU-VIRU/3c.
FILE_TRANSFER_USING_TCP_SOCKETS
3c.CREATION FOR FILE TRANSFER USING TCP
SOCKETS
AIM
To write a python program for creating File Transfer using TCP Sockets Links
ALGORITHM:
1. Import the necessary python modules.
2. Create a socket connection using socket module.
3. Send the message to write into the file to the client file.
4. Open the file and then send it to the client in byte format.
5. In the client side receive the file from server and then write the content into it.
PROGRAM
server:
import socket
import os
HOST = '127.0.0.1'
PORT = 65432
def send_file(filename, conn):
if os.path.isfile(filename):
conn.sendall(b'EXISTS')
file_size = os.path.getsize(filename)
conn.sendall(str(file_size).encode('utf-8'))
client_response = conn.recv(1024).decode('utf-8')
if client_response == 'READY':
with open(filename, 'rb') as f:
chunk = f.read(1024)
while chunk:
conn.sendall(chunk)
chunk = f.read(1024)
print(f"File '{filename}' sent successfully.")
else:
conn.sendall(b'NOT_EXISTS')
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as server_socket:
server_socket.bind((HOST, PORT))
server_socket.listen()
print(f"File server is listening on {HOST}:{PORT}")
while True:
conn, addr = server_socket.accept()
with conn:
print(f"Connected by {addr}")
filename = conn.recv(1024).decode('utf-8')
print(f"Client requested file: {filename}")
https://github.com/HIRU-VIRU/3c.FILE_TRANSFER_USING_TCP_SOCKETS 1/3
30/09/2024, 11:30 HIRU-VIRU/3c.FILE_TRANSFER_USING_TCP_SOCKETS
send_file(filename, conn)
client:
import socket
HOST = '127.0.0.1'
PORT = 65432
def receive_file(filename, conn):
response = conn.recv(1024).decode('utf-8')
if response == 'EXISTS':
file_size = int(conn.recv(1024).decode('utf-8'))
print(f"File '{filename}' exists on server, size: {file_size} bytes.")
conn.sendall(b'READY')
with open('received_' + filename, 'wb') as f:
total_received = 0
while total_received < file_size:
data = conn.recv(1024)
f.write(data)
total_received += len(data)
print(f"Received {total_received} of {file_size} bytes")
print(f"File '{filename}' received and saved as 'received_{filename}'")
else:
print("File does not exist on the server.")
with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as client_socket:
client_socket.connect((HOST, PORT))
filename = input("Enter the filename you want to download: ")
client_socket.sendall(filename.encode('utf-8'))
receive_file(filename, client_socket)
OUTPUT:
server:
https://github.com/HIRU-VIRU/3c.FILE_TRANSFER_USING_TCP_SOCKETS 2/3
30/09/2024, 11:30 HIRU-VIRU/3c.FILE_TRANSFER_USING_TCP_SOCKETS
client:
RESULT
Thus, the python program for creating File Transfer using TCP Sockets Links was successfully
created and executed.
https://github.com/HIRU-VIRU/3c.FILE_TRANSFER_USING_TCP_SOCKETS 3/3
