sendfile_client

import os.path, socket, struct, sys
server = socket.create_connection((sys.argv[1], int(sys.argv[2])))
file_name = sys.argv[3]
encoded_file_name = file_name.encode()
server.send(struct.pack('>I', len(encoded_file_name)))
server.send(encoded_file_name)
server.send(struct.pack('>I', os.path.getsize(file_name)))
with open(file_name, 'rb') as file:
    for chunk in iter(lambda: file.read(4096), b''):
        server.send(chunk)