我面临2个问题。 1.如果先尝试使用菜单选项3，我的客户端代码不会在循环中运行，但是如果我先使用另一个选项，例如1或2，它将以应有的方式在循环中运行。 2.在服务器端，我不断收到此错误。 71号线，list_files_s server_s.send(path.encode()) OSError： [WinError 10057] 不允许发送或接收数据的请求，因为套接字未连接，并且(在使用 sendto 调用在数据报套接字上发送时)未提供地址 据我了解，在使用TCP作为发送的一部分时，我们不需要发送地址。如果可以的话，请帮忙。
这是到目前为止的代码。
客户：
import socket
import sys
import os
import threading
IP = "127.0.0.1" #can be hardset to these values for testing
#IP = socket.gethostname()
port = 12000
if int(port) > 5000: # converts the string parameter to integer for comparison to check if it is greater than 5000
port = int(port)
else:
print("Port should be greater than 5000")
sys.exit()
def client_menu(): # this function presents a menu to the user and in turn calls different functions
print(" 1. Get files from the server n 2. Put files on the server n 3. List all files n 4. Exit")
c = input("Enter an option to perform an action: ")
print("You entered: " + c) #user input drives the menu, it is sent to the server side as well to execute the required function
choice = int(c)
client_s.send(c.encode())
if choice == 1:
recv_from_server() # used to recieve files stored on the server
if choice == 2:
send_to_server() # used to send files from the client to the server
if choice == 3: # used to see the list of all files in a directory
list_files_c()
if choice == 4: # used to exit the system
print("You chose to exit")
sys.exit()
elif choice > 4: # tells the user incorrect prompt given
print("Command not understood")
sys.exit()
#funtion definitions for the functions used in the menu
def send_to_server(): # gets the current path to check if required files exist before opening the file to be read and sent to the server
path = os.getcwd()
fileName = "foo1.txt"
if os.path.exists(fileName):
print("Path exists, sending files")
fo_c=open(fileName, 'rb')
words=fo_c.read(102040)
print(words)
client_s.send(fileName.encode()) # sends the filedata alongwith the IP and port information to the server
client_s.send(words)
fo_c.close()
print("File: " + fo_c.name + " is being sent")
else:
print("Path not found")
def recv_from_server():
fileName = client_s.recv(2048) # gets the file information from the server, opens it to read and then saves it
print("Path found, recieving files")
fo_c = open(fileName, 'wb')
print(fo_c)
words = client_s.recv(10240)
print(words)
fo_c.write(words)
fo_c.close()
print("File: " + str(fileName) + "has been recieved")
print("Saved as received"+str(fileName))
def list_files_c(): # lists all the files in the directory where the user is
#path = os.getcwd()
path = client_s.recv(2048)
if os.path.exists(path):
print("Path received, the list of files is: ")
padir = os.listdir(path)
for file in padir:
print(file)
else:
print("Path not found")
client_s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # creates a TCP socket to establish communication
client_s.connect((IP, port))
msg = ("Connected to the server")
print(msg)
#client_s.send(msg.encode())
#msg = client_s.recv(2048)
#print(msg.decode())
while True:
#client_menu()
threading.Thread(target=client_menu(), args=(client_s,)).start()
Server:
import socket
import sys
import os
port = 12000 #can be hardset to this value for testing
IP = "127.0.0.1"
#IP = socket.gethostname()
if int(port) > 5000: # converts the string parameter to integer for comparison to check if it is greater than 5000
port = int(port)
else:
print("Port should be greater than 5000")
sys.exit()
def server_menu():
c = msg.recv(2048) # recieves the option selected by the user to execute the specified function call
choice = int(c)
if choice == 1:
send_to_client() # used to send files to the client
if choice == 2:
recv_from_client() # used to receive files from the client
if choice == 3:
list_files_s() # used to print a list of files in the directory
if choice == 4: # used to exit the system
print("You chose to exit")
sys.exit()
elif choice > 4: # used to notify user of incorrect prompt
print("Command not understood")
sys.exit()
# definitions of the functions executed by the menu
def send_to_client(): # used to check if a file exists, then open to read before sending the encoded filedata
fileName = "foo3.txt"
if os.path.exists(fileName):
print("Path found, getting file from the client")
fo_s = open(fileName, 'rb')
words = fo_s.read(10240)
print(words)
server_s.send(fileName.encode())
server_s.send(words)
fo_s.close()
print("File: "+ fo_s.name +"is being sent")
else:
print("Path not found")
def recv_from_client():
fileName = server_s.recv(2048) # recieves the file information from the client over a certian port and IP
print("Path found, receiving files")
fo_s = open(fileName, 'wb') # opnes the files, and then saves it
print(fo_s)
words = server_s.recv(10240)
print(words)
fo_s.write(words)
fo_s.close()
print("File: " + str(fileName) + "has been received")
print("Saved as received_"+str(fileName))
def list_files_s(): # sends directory path for lisiting on client side
path = os.getcwd()
if os.path.exists(path):
print("Path found, sending path: " , path)
server_s.send(path.encode())
else:
print("Path not found")
server_s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # creates a UDP socket
server_s.bind((IP, port))
server_s.listen(5)
print ("The server is ready to recieve from port:", port)
while True:
msg, clientAddr = server_s.accept()
data = msg.recv(2048)
#msg1 = "Hello"
#msg, clientAddr = server_s.recv(2048)
#server_s.send(msg1.encode()) # sends the encoded string input by the user
while True:
server_menu()
此解决方案可帮助您解决 [WinError 10057]
while True: msg, clientAddr = server_s.accept() data = msg.recv(2048)
客户端套接字实际上存储在代码msg中。
print("Path found, sending path: " , path) server_s.send(path.encode())
但是您正在尝试将消息发送到服务器套接字，这毫无意义，并且客户端不会收到任何消息，因此如果您需要从/到客户端recv或send，则需要将server_s更改为msg。