我最近正在开展一个项目,其中我基本上正在制作一个Dropbox克隆。服务器和客户端工作正常,但我有一个小问题。我能够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,它会在传输第一个文件后给出错误,所以基本上我的代码只适用于单个文件。我需要让它适用于多个文件。任何帮助将不胜感激。这是我的代码
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()
以下是我收到的错误
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: ''
答案 0 :(得分:3)
您的代码段中有几个小问题。也许你可以做这样的事情?
EIdTLSClientTLSHandShakeFailed
客户端:
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()
此处客户端还会发送文件大小。 size和filesize都编码为二进制字符串(您可以使用另一种方法)。文件名长度(大小)最多可以取2 ^ 16,发送文件最多可以包含2 ^ 32字节(即2 ^文件大小)。
答案 1 :(得分:1)
您可以创建多个套接字并使用makefile编写:
服务器:
import socket
import threading
import time
serversock = socket.socket()
host = socket.gethostname()
port = 9000
serversock.bind((host, port))
serversock.listen(10)
print("Waiting for a connection.....")
def reader(client):
fle = client.makefile('r')
filename = fle.readline()
client.send("Got file {}\n".format(filename))
file_to_write = open(filename.rstrip(), 'wb')
client.send("Starting writing {}\n".format(filename))
file_to_write.write(fle.read())
file_to_write.close()
client.send("Finished writing {}\n".format(filename))
while True:
client, addr = serversock.accept()
print("Got a connection from %s" % str(addr))
client_serve_thread = threading.Thread(target=reader, args=tuple((client,)))
client_serve_thread.start()
time.sleep(0.001)
serversock.close()
客户端:
import socket
import os
import thread
import os
host = socket.gethostname()
port = 9000
path = "/home/padraic/t"
directory = os.listdir(path)
for file in directory:
s = socket.socket()
s.connect((host, port))
filename = os.path.join(path, file)
s.send(file+"\n")
print(s.recv(1024))
file_to_send = open(os.path.join(path, file), 'rb')
s.send(file_to_send.read())
print('File Sent\n')
file_to_send.close()
rec = s.recv(1024)
print(rec)
s.close()
答案 2 :(得分:1)
我相信您实际上已收到所有文件&#39;内容,然后将它们全部写入一个文件。
您的服务器只接受单个连接,并将收到的任何数据写入文件,直到它不再接收数据为止。在客户端最终关闭套接字之前,这种情况不会发生。
有几种方法可以解决这个问题。
accept
调用移至服务器循环,将connect
调用移至客户端循环。让您的客户端连接,发送文件名,传输单个文件的整个内容,然后关闭连接。在下一次迭代中,重新做一遍。我建议(1)更健壮,更容易实现。
第二个主题:您发送文件名的机制存在缺陷。如果我正确地遵循它,如果正在传输的文件名以数字开头,则程序将无法正常工作,因为服务器将无法确定用于发送文件名长度的字节数。有两种常用的发送方式:
struct
模块以明确定义的方式格式化二进制整数。你实际发送&#34;打包&#34;格式,服务器将解压缩它。然后它会准确知道文件名接收的字节长度。