Send large data files

Client

Import OS
 Import Socket
 Import struct
 Import JSON 

Client = socket.socket () 
the client.connect (( ' 127.0.0.1 ' , 8080 )) 

the while True: 
    movie_dir = R & lt ' F.: \ day31 \ video ' 
    movie_list = the os.listdir (movie_dir )
     for index, i in the enumerate (movie_list, 1 ):
         Print (index, i) 
    choice = the iNPUT ( ' Please enter the number you want to select the movie: ' ) .strip ()
     IF Not choice.isdigit ():
         Print ( ' Enter number ' )
         Continue 
    Choice = int (Choice) -. 1
     IF Choice Not  in Range (0, len (movie_list)):
         Print ( ' Please input the correct number ' )
         Continue 
    MOVIE_NAME = movie_list [Choice] 
    movie_path = the os.path.join (movie_dir, MOVIE_NAME)
     # Get file size 
    movie_size = os.path.getsize (movie_path)
     # production dictionary 
    DIC = { ' name' : MOVIE_NAME, ' movie_size ' : movie_size}
     # create header 
    json_dic = json.dumps (DIC) 
    byte_dic = json_dic.encode ( ' UTF-. 8 ' ) 
    header = struct.pack ( ' I ' , len (byte_dic))
     # Send header 
    client.send (header)
     # send dictionary 
    client.send (byte_dic)
     # transmit real data 
    with Open (movie_path, ' RB ' ) AS F: 
        RES = f.readlines ()
     for Iin res:
        client.send(i)
    print('xxx')

Server

Import Socket
 Import JSON
 Import struct 

Server = socket.socket () 
server.bind (( ' 127.0.0.1 ' , 8080 )) 
server.listen ( . 5 ) 

the while True: 
    Conn, to addre = server.accept ()
     the while True:
         the try :
             # receiving header dictionary 
            header_dic conn.recv = (. 4 )
             # parses the header length acquiring dictionary 
            dic_size struct.unpack = ( ' I ' , header_dic) [0]
             Print(dic_size)
            # 接收字典
            byte_dic = conn.recv(dic_size)
            dic = json.loads(byte_dic.decode('utf-8'))
            # 接收真实数据
            real_size = dic.get('movie_size')
            recv_size = 0
            while recv_size < real_size:
                data = conn.recv(1024)
                with open(r'D:\unloads\%s' % dic.get('name'), 'ab')as f:
                    f.write(data)
                recv_size += len(data)
            print('ooo')
        except ConnectionResetError:
            break