所以我一直在用客户端和服务器制作套接字文件传输脚本。服务器上有客户端可以请求的文件是代码。
#server.py
import socket
import os
host = '127.0.0.1'
port = 5000
#defining the stuff we want to use
#all the files you can download are stored here
def main():
file_folder = '/home/lario/Desktop/pyprojects/networking/filetransfer/files/'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((host, port))
print('Server started on {}:{}'.format(host, str(port)))
s.listen(5)
sentace = 'We have these files for you to download: '
while True:
conn, addr = s.accept()
print('[*] Got a connection from {}'.format(addr))
loop(file_folder, sentace, conn, s, os.listdir(file_folder))
print('[*] File transfer with {} has been succesfull')
s.close()
def loop(file_folder, sentace, conn, socket, existing_files):
#sends which files we have to download for the client
conn.send(sentace.encode('utf-8') + str(existing_files).encode('utf-8'))
#gets response which one he wants to download
data = socket.recv(4096)
#gets path of the file
file_place = file_folder + data.decode('utf-8')
#checks if file exists
if os.path.isfile(file_place):
#asks if he wants to download it
succes = '[+] The file exists, it has {} still wish to download?'.format(os.path.getsize(file_place)).encode('utf-8')
conn.send(succes)
data = socket.recv(4096).decode('utf-8')
#if response is yes send him the file
if data.lower() == 'y':
with open(file_place, 'rb') as f:
file_data = f.read(4096)
conn.send(file_data)
else:
pass
else:
succes = '[-] The file doesn\'t exist. Try again'
conn.send(succes.encode('utf-8'))
loop(file_folder, sentace, conn, socket, existing_file)
#client.py
import socket
def main():
ip = '127.0.0.1'
port = 5000
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((ip, port))
print('[*] Connected to server')
data = s.recv(1024)
print(data.decode('utf-8'))
file_down = input('-->')
s.send(file_down.encode('utf-8'))
data = s.recv(4096)
if data[1] == '+':
data = s.recv(4096)
print(data.decode('utf-8'))
choice = input("Y/N").lower()
if choice == 'y':
s.send(choice.encode('utf-8'))
prefix = input('What kind of prefix do you want for your files: ')
with open(str(prefix + file_down), 'wb') as f:
data = s.recv(4096)
f.write(data)
elif choice == 'n':
s.send(choice.encode('utf-8'))
print('Well, see you next time.')
else:
s.send(choice.encode('utf-8'))
print('Not a valid input.')
else:
print('File doesn\'t exist.')
main()
这是输出。
#server
Server started on 127.0.0.1:5000
[*] Got a connection from ('127.0.0.1', 47170)
Traceback (most recent call last):
File "server.py", line 48, in <module>
main()
File "server.py", line 17, in main
loop(file_folder, sentace, conn, s, os.listdir(file_folder))
File "server.py", line 25, in loop
data = socket.recv(4096).decode('utf-8')
OSError: [Errno 107] Transport endpoint is not connected
#client
[*] Connected to server
We have these files for you to download: ['syria.txt', 'eye.jpg', 'kim-jong.jpg']
-->
你会看到我在变量中有字符串，我这样做是因为你不能像这样编码字符串。
'this is a string'.encode('utf-8')
客户端应该选择一个带有前缀的文件，它应该将文件写入另一个文件。
答案 0 :(得分：1)
这里有两个套接字：第一个是服务器s中名为main的套接字。这是一个监听套接字，它是您用于accept个新连接的套接字。 accept调用返回另一个套接字（您将其命名为conn）。
conn套接字已连接到您的对等方，您可以从对等方send到recv。 s套接字未连接，您既不能send也不能recv。因此，您没有理由将s传递给loop函数。此时您可以使用s执行的唯一重要事项是close，或accept更多关联。
答案 1 :(得分：0)
以下是更新的代码。需要使用conn而不是socket。
#server.py
import socket
import os
host = '127.0.0.1'
port = 5002
#defining the stuff we want to use
#all the files you can download are stored here
def main():
file_folder = '<Path To Directory>'
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((host, port))
print('Server started on {}:{}'.format(host, str(port)))
s.listen(5)
sentace = 'We have these files for you to download: '
while True:
conn, addr = s.accept()
print('[*] Got a connection from {}'.format(addr))
loop(file_folder, sentace, conn, s, os.listdir(file_folder))
print('[*] File transfer with {} has been succesfull')
s.close()
def loop(file_folder, sentace, conn, socket, existing_files):
#sends which files we have to download for the client
conn.send(sentace.encode('utf-8') + str(existing_files).encode('utf-8'))
#gets response which one he wants to download
data = conn.recv(100000)
#gets path of the file
file_place = file_folder + data.decode('utf-8')
#checks if file exists
if os.path.isfile(file_place):
#asks if he wants to download it
succes = '[+] The file exists, it has {} still wish to download?'.format(os.path.getsize(file_place)).encode('utf-8')
conn.send(succes)
print ("CheckPoint 1 in Server")
data = conn.recv(4096)
#if response is yes send him the file
if data.lower() == 'y':
with open(file_place, 'rb') as f:
file_data = f.read(4096)
conn.send(file_data)
else:
pass
else:
succes = '[-] The file doesn\'t exist, Try again'
conn.send(succes.encode('utf-8'))
loop(file_folder, sentace, conn, socket, existing_file)
main()
<强> Client.py
#client.py
import socket
def main():
ip = '127.0.0.1'
port = 5002
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((ip, port))
print('[*] Connected to server')
data = s.recv(100000)
print(data.decode('utf-8'))
file_down = input('-->')
s.send(file_down.encode('utf-8'))
data = s.recv(4096)
print (data)
if data[1] == '+':
data = s.recv(4096)
print(data.decode('utf-8'))
print("Reached here in Client 1")
choice = input("Y/N").lower()
if choice == 'y':
s.send(choice)
prefix = input('What kind of prefix do you want for your files: ')
with open(str(prefix + file_down), 'wb') as f:
data = s.recv(4096)
f.write(data)
elif choice == 'n':
s.send(choice.encode('utf-8'))
print('Well, see you next time.')
else:
s.send(choice.encode('utf-8'))
print('Not a valid input.')
else:
print('File doesn\'t exist.')
main()
客户端输出
We have these files for you to download: ['pDiffCompare.py', 'lib', 'g.jar']
-->'pDiffCompare.py'
[+] The file exists, it has 2296 still wish to download?
y
服务器端输出
Server started on 127.0.0.1:5002
[*] Got a connection from ('127.0.0.1', 38702)
CheckPoint 1 in Server
[*] File transfer with {} has been succesfull