需要将多个文件从客户端传输到服务器 [英] Need to transfer multiple files from client to server

问题描述

我最近正在从事一个项目，该项目基本上是在做一个保管箱克隆.服务器和客户端工作正常，但是我有一个小问题.我可以将单个文件从客户端传输到服务器，但是当我尝试将所有文​​件一起传输时，在传输第一个文件后它给我一个错误，因此基本上我的代码仅适用于单个文件.我需要使它适用于多个文件.任何帮助将不胜感激.这是我的代码

I'm recently working on a project in which I'm basically making a dropbox clone. The server and client are working fine but I'm having a slight issue. I'm able to transfer a single file from the client to the server but when I try to transfer all the files together it gives me an error after the transfer of the first file so basically my code is only working for a single file. I need to make it work for multiple files. Any help will be appreciated. Here's my code

服务器代码

import socket
import thread
import hashlib

serversock = socket.socket()
host = socket.gethostname();
port = 9000;
serversock.bind((host,port));
filename = ""
serversock.listen(10);
print "Waiting for a connection....."

clientsocket,addr = serversock.accept() 
print("Got a connection from %s" % str(addr))
while True:
    size = clientsocket.recv(1)
    filesz = clientsocket.recv(1)
    if filesz.isdigit():
        size += filesz
        filesize = int(size)
    else:
        filesize = int(size)    
    print filesize
    for i in range(0,filesize):
        if filesz.isdigit():
            filename += clientsocket.recv(1)
        else:
            filename += filesz
            filesz = "0"
    print filename      
    file_to_write = open(filename, 'wb')
    while True:
        data = clientsocket.recv(1024)
        #print data
        if not data:
            break
        file_to_write.write(data)
    file_to_write.close()
    print 'File received successfully'
serversock.close()

客户代码

import socket
import os
import thread

s = socket.socket() 
host = socket.gethostname()                           
port = 9000
s.connect((host, port))
path = "C:\Users\Fahad\Desktop"
directory = os.listdir(path)
for files in directory:
    print files  
    filename = files
    size = bytes(len(filename))
    #print size
    s.send(size)
    s.send(filename)
    file_to_send = open(filename, 'rb')
    l = file_to_send.read()
    s.sendall(l)
    file_to_send.close()       
    print 'File Sent'                                              
s.close()                                                                           

这是我得到的错误

Waiting for a connection.....
Got a connection from ('192.168.0.100', 58339)
13
Betternet.lnk
File received successfully
Traceback (most recent call last):
  File "server.py", line 22, in <module>
    filesize = int(size)
ValueError: invalid literal for int() with base 10: ''

推荐答案

您的代码段中有几个小问题.也许您可以做这样的事情?

There are several minor issues in your snippet. Maybe you could do something like this?

import socket
import thread
import hashlib

serversock = socket.socket()
host = socket.gethostname();
port = 9000;
serversock.bind((host,port));
filename = ""
serversock.listen(10);
print "Waiting for a connection....."

clientsocket,addr = serversock.accept()
print("Got a connection from %s" % str(addr))
while True:
    size = clientsocket.recv(16) # Note that you limit your filename length to 255 bytes.
    if not size:
        break
    size = int(size, 2)
    filename = clientsocket.recv(size)
    filesize = clientsocket.recv(32)
    filesize = int(filesize, 2)
    file_to_write = open(filename, 'wb')
    chunksize = 4096
    while filesize > 0:
        if filesize < chunksize:
            chunksize = filesize
        data = clientsocket.recv(chunksize)
        file_to_write.write(data)
        filesize -= len(data)

    file_to_write.close()
    print 'File received successfully'
serversock.close()

客户:

import socket
import os
import thread

s = socket.socket()
host = socket.gethostname()
port = 9000
s.connect((host, port))
path = "blah"
directory = os.listdir(path)
for files in directory:
    print files
    filename = files
    size = len(filename)
    size = bin(size)[2:].zfill(16) # encode filename size as 16 bit binary
    s.send(size)
    s.send(filename)

    filename = os.path.join(path,filename)
    filesize = os.path.getsize(filename)
    filesize = bin(filesize)[2:].zfill(32) # encode filesize as 32 bit binary
    s.send(filesize)

    file_to_send = open(filename, 'rb')

    l = file_to_send.read()
    s.sendall(l)
    file_to_send.close()
    print 'File Sent'

s.close()

在这里，客户端还会发送文件的大小.大小和文件大小均被编码为二进制字符串(您可以执行另一种方法).文件名长度(大小)最多可取2 ^ 16，发送文件最多2 ^ 32字节(即2 ^ filesize).

Here the client also sends the size of the file. Both size and filesize are encoded as binary strings (you could do another method). The filename length (size) can take values up to 2^16 and the send file can have up to 2^32 byte (that is 2^filesize).

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