Use python stuck achieve scoket programming file transfer

Use socket in the struck to achieve the client sends

Server:

# - * - Coding: UTF-. 8 - * - 
Import Socket, Time, SocketServer, struct, OS, _Thread 

Host = '127.0.0.1' 
Port = 12307 
S = socket.socket (socket.AF_INET, socket.SOCK_STREAM) # define socket type 
s.bind ((host, port)) # bind need Ip and port to listen on, tuple format 
s.listen (1) 


DEF conn_thread (Connection, address): 
    the while True: 
        the try: 
            connection.settimeout (600) 
            fileinfo_size = struct.calcsize ( '12sl') # 12s represent 12 characters, l represents a long integer 
            buf = connection.recv (fileinfo_size) 
            IF buf: # if not after the if, the first file transfer is complete automatically go to the next one, you need to get the file size information before they can proceed 
                filename, filesize = struct.unpack ( '12sl ', buf) 
                filename_f = filename.decode ( "utf-8 "). strip ( '\ 00') # C language '\ 0' is an ASCII code 0 characters in python represents the null character occupy a position too
                = the os.path.join filenewname ( 'E: \\', os.path.basename (filename_f)) 
                Print (U 'File Name:% s, file size: S%'% (filenewname, filesize)) 
                recvd_size = 0 # defines the received file size 
                file Open = (filenewname, 'WB') 
                Print (U "start transmission file content") 
                the while == Not recvd_size filesize: 
                    IF filesize - recvd_size> 1024: 
                        RDATA = connection.recv (1024)  
                        recvd_size = len + (RDATA) 
                    the else: 
                        RDATA = Connection.recv(filesize - recvd_size)
                        recvd_size filesize = 
                    a file.write (RDATA) 
                File.close () 
                Print ( 'the receive DONE') 
                # Connection.close () 
        the except socket.timeout:
            connection.close()

while True:
    print(u"开始进入监听状态")
    connection, address = s.accept()
    print('Connected by ', address)
    # thread = threading.Thread(target=conn_thread,args=(connection,address)) #使用threading也可以
    # thread.start()
    _thread.start_new_thread(conn_thread, (connection, address))
s.close()

　　Client:

# - * - Coding: UTF-. 8 - * - 
Import Socket, OS, struct 

S = socket.socket (socket.AF_INET, socket.SOCK_STREAM) 
s.connect (( '127.0.0.1', 12307)) 
the while True: 
    filepath = input ( 'enter file to transfer the absolute path: \ R & lt \ n-') 
    Print (type (filepath)) 
    Print (len (filepath.encode ( "UTF-. 8"))) 
    IF the os.path.isfile (filepath ): 
        #fileinfo_size = struct.calcsize ( '20sl') rule # define packaged 
        # definition file header information, including file name and file size 
        fhead = struct.pack ( '12sl', filepath.encode ( "utf-8"), os .stat (filepath) .st_size) 
        Print (the os.stat (filepath) .st_size)  
        s.send (fhead) 
        Print (U 'file path:', filepath) 
        # with Open (filepath, 'RB') AS FO:So send the file in question, will be made after the completion of sending something in the past
        FO = Open (filepath, 'RB') 
        the while True: 
            Filedata = FO.read(1024)
            if not filedata:
                BREAK 
            s.send (Filedata) 
        fo.close () 
        Print (U 'transmission success') 
        # S.CLOSE ()

　　The service side effects:

 

 Client results