如何从客户端套接字获取信息并在服务器上显示信息?

Question

如何强制服务器接收来自客户端的消息并显示消息:&;{name} send message: {data}&;?例如，一个用户向另一个用户发送消息，当名为John的用户发送消息"Hello Alice, how are you?"时，服务器将在此时显示——John将发送消息:Hello Alice, how are you?我将感激你的帮助。我希望能在本文中找到这个问题的答案。下列代码:

服务器:

import threading
import socket
HOST = '127.0.0.1'
PORT = 8888
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind((HOST, PORT))
server.listen(15)
print(f'Server {HOST}:{PORT} start.')
users = []
def send_all(data):
for user in users:
user.send(data)
def listen_user(user):
print('Listening user')

while True:
data = user.recv(1024)
print(f'User sent {data}')
send_all(data)
def start_server():
while True:
user_socket, addr = server.accept()
users.append(user_socket)
potok_info = threading.Thread(target=listen_user, args=(user_socket,))
potok_info.start()

if __name__ == '__main__':
start_server()

客户:

import socket
import time
import threading
import os
HOST = '127.0.0.1'
PORT = 8888
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect((HOST, PORT))

def send_message():
print('Enter name: ')
name = input()
while True:
data = client.recv(1024)
print(data.decode('utf-8'))
msg = (f'{name} send message {data}')
client.send(msg.encode('utf-8')) # this


def send_server():

listen_thread = threading.Thread(target=send_message)
listen_thread.start()
while True:
client.send(input('you: ').encode('utf-8'))

if __name__ == '__main__':
os.system('clear')
print('***** Welcome in Security Chat. *****')
send_server()

Answer 1

我这样修改了你的代码。

这是你的服务器脚本。

import threading
import socket
HOST = '127.0.0.1'
PORT = 8888
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.bind((HOST, PORT))
server.listen(15)
print(f'Server {HOST}:{PORT} start.')
users = [] # To store their name
sort = [] # To store their socket
def listen_user(user):
print('Listening user')
sort.append(user)  # Store their socket in sort[]
user.send('Name'.encode('utf-8')) # send 'Name' to clients
name = user.recv(1024).decode('utf-8') # Receive their name
users.append(name) # Store their name in user[]
while True:
data = user.recv(1024).decode('utf-8')
print(f'{name} sent {data}')
for i in sort: # Send received messages to clients
if(i != server and i != user): # Filter server and message sender. Send message except them.
i.sendall(f'{name} > {data}'.encode('utf-8'))

user.close() # To close client socket connection.
def start_server():
while True:
user_socket, addr = server.accept()
potok_info = threading.Thread(target=listen_user, args=(user_socket, ))
potok_info.start()

if __name__ == '__main__':
start_server()

And This is your client script，

import socket
import time
import threading
import os
HOST = '127.0.0.1'
PORT = 8888
client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client.connect((HOST, PORT))
def send_message():
if('Name' in client.recv(1024).decode('utf-8')): # If 'Name' received. It allows you to send the name.
name  = input('Enter Name : ') # Type name
client.send(name.encode('utf-8'))
while True:
data = input('Enter : ') # Enter message
client.send(data.encode('utf-8'))

receive = client.recv(1024).decode('utf-8')# Receive messages from other clients.
print(receive)
def send_server():
listen_thread = threading.Thread(target=send_message)
listen_thread.start()      
if __name__ == '__main__':
os.system('clear')
print('***** Welcome in Security Chat. *****')
send_server()

添加删除代码中的某些部分。仔细研究它，这样你就可以识别代码中的错误。