python Realizes TCP File Receiving and Sending

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First, run the server side to open the receiving, and send the file at the running customer service side

And remember to change ip for 1 time

1. Send

Modify according to your own needs, and complete file sending and receiving under simple LAN

Client

#  Data and files are transmitted from the client to the server 

import socket
import tqdm
import os


def send(filename):
    #  Transmission data spacer 
    SEPARATOR = '<SEPARATOR>'
    #  Server information 
    host = '127.0.0.1'
    port =1234
    #  File buffer 
    Buffersize = 4096*10
    #  Transfer file name 
    filename = filename
    #  File size 
    file_size  = os.path.getsize(filename)
    #  Create socket Link 
    s = socket.socket()
    print(f' Server connection {host}:{port}')
    s.connect((host, port))
    print(' Successful connection to server ')

    #  Send file name and file size, which must be encoded 
    s.send(f'{filename}{SEPARATOR}{file_size}'.encode())

    #  File transfer 
    progress = tqdm.tqdm(range(file_size), f' Send {filename}', unit='B', unit_divisor=1024)

    with open(filename,'rb') as f :
        #  Read a file 
        for _ in progress:
            bytes_read = f.read(Buffersize)
            if not bytes_read:
                break
            # sendall  Ensure that data can still be transmitted when the network is busy 
            s.sendall(bytes_read)
            progress.update(len(bytes_read))
    #  Close resources 
    s.close()

if __name__ == '__main__':
    filename = input(' Please enter a file name: ')
    send(filename)

2. Receive

Server side

import socket
import tqdm
import os
import threading

def received():
    #  Set the server's ip And  port
    #  Server information 
    sever_host = '127.0.0.1'
    sever_port =1234
    #  Transmission data spacer 
    SEPARATOR = '<SEPARATOR>'

    #  File buffer 
    Buffersize = 4096*10
    s = socket.socket()
    s.bind((sever_host, sever_port))

    #  Set the number of listeners 
    s.listen(128)
    print(f' Server listening {sever_host}:{sever_port}')

    #  Receive client connection 
    client_socket, address = s.accept()
    #  Print client ip
    print(f' Client {address} Connect ')

    #  Receive client information 
    received = client_socket.recv(Buffersize).decode()
    filename ,file_size = received.split(SEPARATOR)
    #  Get the name of the file , Size 
    filename = os.path.basename(filename)
    file_size = int(file_size)

    #  File receiving processing 
    progress = tqdm.tqdm(range(file_size), f' Receive {filename}', unit='B', unit_divisor=1024, unit_scale=True)


    with open('8_18_'+filename,'wb') as f:
        for _ in progress:

            #  Read data from the client 
            bytes_read = client_socket.recv(Buffersize)
            #  If there is no data transfer content 
            if not bytes_read:
                break
            #  Read and write 
            f.write(bytes_read)
            #  Update progress bar 
            progress.update(len(bytes_read))

    #  Close resources 
    client_socket.close()
    s.close()

if __name__ == '__main__':
    received()