Вам необходимо создать две отдельные темы для отправки и получения.То, как вы написали цикл, не будет работать для двусторонней связи одновременно.Потому что после отправки сообщения цикл ожидает что-то получить.[Если вы хотите запустить код через Интернет, замените localhost
на нужный IP-адрес в строке HOST = 'localhost'
]. Позвольте мне поделиться решением (это пример решения, которое я сделал, пока учился на курсе бакалавриата по сети):
Я протестировал код на машине с Linux (Ubuntu 18.04).У меня есть студенты, которые успешно запустили это на своем Mac.Я не уверен, работает ли он на машине с Windows.Даже если это не работает на компьютере с Windows, несколько небольших изменений должны помочь.
Код сервера (вам нужно запустить его первым): chatServerDuplex.py
# Import socket module
from socket import *
import threading
import sys # In order to terminate the program
FLAG = False # this is a flag variable for checking quit
# function for receiving message from client
def recv_from_client(conn):
global FLAG
try:
# Receives the request message from the client
while True:
if FLAG == True:
break
message = conn.recv(1024).decode()
# if 'q' is received from the client the server quits
if message == 'q':
conn.send('q'.encode())
print('Closing connection')
conn.close()
FLAG = True
break
print('Client: ' + message)
except:
conn.close()
# function for receiving message from client
def send_to_client(conn):
global FLAG
try:
while True:
if FLAG == True:
break
send_msg = input('')
# the server can provide 'q' as an input if it wish to quit
if send_msg == 'q':
conn.send('q'.encode())
print('Closing connection')
conn.close()
FLAG = True
break
conn.send(send_msg.encode())
except:
conn.close()
# this is main function
def main():
threads = []
global FLAG
# TODO (1) - define HOST name, this would be an IP address or 'localhost' (1 line)
HOST = 'localhost'
# TODO (2) - define PORT number (1 line) (Google, what should be a valid port number)
# make sure the ports are not used for any other application
serverPort = 6789
# Create a TCP server socket
#(AF_INET is used for IPv4 protocols)
#(SOCK_STREAM is used for TCP)
# TODO (3) - CREATE a socket for IPv4 TCP connection (1 line)
serverSocket = socket(AF_INET, SOCK_STREAM)
# Bind the socket to server address and server port
# TODO (4) - bind the socket for HOSR and serverPort (1 line)
serverSocket.bind((HOST, serverPort))
# Listen to at most 1 connection at a time
# TODO (5) - listen and wait for request from client (1 line)
serverSocket.listen(1)
# Server should be up and running and listening to the incoming connections
print('The chat server is ready to connect to a chat client')
# TODO (6) - accept any connection request from a client (1 line)
connectionSocket, addr = serverSocket.accept()
print('Sever is connected with a chat client\n')
t_rcv = threading.Thread(target=recv_from_client, args=(connectionSocket,))
t_send = threading.Thread(target=send_to_client, args=(connectionSocket,))
# call the function to receive message server
#recv_from_server(clientSocket)
threads.append(t_rcv)
threads.append(t_send)
t_rcv.start()
t_send.start()
t_rcv.join()
t_send.join()
# closing serverScoket before exiting
print('EXITING')
serverSocket.close()
#Terminate the program after sending the corresponding data
sys.exit()
# This is where the program starts
if __name__ == '__main__':
main()
Код клиента: chatClientDuplex.py
from socket import *
import threading
import sys
FLAG = False # this is a flag variable for checking quit
# function for receiving message from client
def send_to_server(clsock):
global FLAG
while True:
if FLAG == True:
break
send_msg = input('')
clsock.sendall(send_msg.encode())
# function for receiving message from server
def recv_from_server(clsock):
global FLAG
while True:
data = clsock.recv(1024).decode()
if data == 'q':
print('Closing connection')
FLAG = True
break
print('Server: ' + data)
# this is main function
def main():
threads = []
# TODO (1) - define HOST name, this would be an IP address or 'localhost' (1 line)
HOST = 'localhost' # The server's hostname or IP address
# TODO (2) - define PORT number (1 line) (Google, what should be a valid port number)
PORT = 6789 # The port used by the server
# Create a TCP client socket
#(AF_INET is used for IPv4 protocols)
#(SOCK_STREAM is used for TCP)
# TODO (3) - CREATE a socket for IPv4 TCP connection (1 line)
clientSocket = socket(AF_INET, SOCK_STREAM)
# request to connect sent to server defined by HOST and PORT
# TODO (4) - request a connection to the server (1 line)
clientSocket.connect((HOST, PORT))
print('Client is connected to a chat sever!\n')
# call the function to send message to server
#send_to_server(clientSocket)
t_send = threading.Thread(target=send_to_server, args=(clientSocket,))
# call the function to receive message server
#recv_from_server(clientSocket)
t_rcv = threading.Thread(target=recv_from_server, args=(clientSocket,))
threads.append(t_send)
threads.append(t_rcv)
t_send.start()
t_rcv.start()
t_send.join()
t_rcv.join()
print('EXITING')
sys.exit()
# This is where the program starts
if __name__ == '__main__':
main()