minimal sendfile example python

# client recv_into
import socket


addr = ('127.0.0.1', 8080)
file = 'test.bin'
data = bytearray(8128)
view = memoryview(data)
with socket.socket() as sock:
    sock.connect(addr)
    print('Connected')
    with open(file, 'wb') as fd:
        while True:
            size = sock.recv_into(data)
            if not size:
                print('EOF')
                break
            fd.write(view[:size])
print('{} has been written.'.format(file))



################################################################


# server sendfile
import threading
import socket


def handler(sock, file):
    with open(file, 'rb') as fd:
        sock.sendfile(fd)
        sock.close()

addr = ('127.0.0.1', 8080)
file_to_send = 'tunnel.sh'

with socket.socket() as sock:
    sock.bind(addr)
    sock.listen(5)
    while True:
        client_sock, client_addr = sock.accept()
        threading.Thread(target=handler, args=(client_sock, file_to_send)).start()