# encoding:utf-8

 # Author:"richie"

 # Date:8/23/2017

 from socket import *

 import pickle

 import os

 server=('127.0.0.1',17001)

 root_path= os.path.abspath(os.curdir) # The absolute path of the current folder

 sock = socket(AF_INET, SOCK_STREAM)

 sock.bind(server)

 sock.listen(5)

 print('Wait for the client connection!!!')

 while True: # Link cycle

     conn, addr = sock.accept() #Waiting for client connection

     print('Connect by',addr)

     while True:    # Communication cycle

         try:

             data = conn.recv(1024) # Receive client data

             if not data: break

             filename = data.decode('utf-8') # Bytes -> String

             file_path = os.path.join(root_path,filename) # join path

             # get file size if file not existed file size is zero

             file_size = os.path.getsize(file_path) if os.path.exists(file_path) else 0

             header = pickle.pack('q', file_size)  # pack header

             conn.send(header)   # send header

             if file_size:   #The file exists and size than 0

                 with open(file_path,'rb') as f:

                     for line in f:

                         conn.send(line)   # send line of file data

             else:

                 conn.send(b'')

         except ConnectionResetError as e:  # conn　abnormal

             break

         except Exception as e:

             print(e)

     conn.close()

 # encoding:utf-8

 # Author:"richie"

 # Date:8/23/2017

 from socket import *

 import pickle,sys

 import os

 def progress(percent,width=250):

     if percent >= 100:

         percent=100

     show_str=('[%%-%ds]' %width) %(int(width * percent / 100) * "#") #字符串拼接的嵌套使用

     print("\r%s %d%%" %(show_str, percent),end='',file=sys.stdout,flush=True)

 server=('127.0.0.1',17001)

 sock = socket(AF_INET,SOCK_STREAM)

 sock.connect(server)

 root_path= os.path.abspath(os.curdir) # The absolute path of the current folder

 while True:

     print('The current home path is '+root_path)

     filename = input('Please enter the path>>:').strip()

     if not filename:continue

     sock.send(filename.encode('utf-8'))

     header = sock.recv(8) # Receive the header

     total_size = pickle.unpack('q',header)[0] # get header data

     each_recv_size = 1024*8421

     recv_size = 0

     recv_data = b''

     down_filename = 'down_'+filename

     f = open(down_filename,'wb')

     while recv_size < total_size:

         if total_size - recv_size < each_recv_size:

             data = sock.recv(total_size - recv_size)

         else:

             data = sock.recv(each_recv_size)

         recv_size += len(data)

         recv_percent = int(100 * (recv_size / total_size))  # Receive the percent

         progress(recv_percent, width=30)  # The width of the progress bar is 30

         f.write(data)

     print()

     f.close()