python套接字OS错误：[Errno 107]未连接传输终结点

所以我一直在用客户端和服务器制作一个套接字文件传输脚本。服务器有客户机可以请求的文件。下面是代码

#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()

这就是输出

#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']
-->

---

客户端应选择一个带有前缀的文件，并将该文件写入另一个文件。

这里有两个套接字：第一个是服务器

main

中名为

s

的套接字。这是一个侦听套接字，用于

接受新连接。
accept
调用返回另一个套接字（您将其命名为
conn
）

conn
插座连接到您的对等方，您可以使用它向对等方发送
和从对等方接收
recv
。
s
插座未连接，您既不能
发送
也不能
接收
。因此，您甚至没有理由将
s
传递给
循环
函数。此时，您可以使用
s
执行的唯一重要操作是
关闭它，或
接受它上的更多连接。
下面是更新的代码。需要使用conn而不是插座

#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()

客户端的输出

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

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

服务器端的输出

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

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

好的，非常感谢，我的脚本仍然有点问题，但我现在就要修复它。是的。问题很少，但没有适当的数据和要求，无法解决。好的，非常感谢，我现在理解了，我将改变它。