“Приложение Python Chat” Ответ

Приложение Python Chat

# Python program to implement server side of chat room.
import socket
import select
import sys
'''Replace "thread" with "_thread" for python 3'''
from thread import *
 
"""The first argument AF_INET is the address domain of the
socket. This is used when we have an Internet Domain with
any two hosts The second argument is the type of socket.
SOCK_STREAM means that data or characters are read in
a continuous flow."""
server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
server.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
 
# checks whether sufficient arguments have been provided
if len(sys.argv) != 3:
    print ("Correct usage: script, IP address, port number")
    exit()
 
# takes the first argument from command prompt as IP address
IP_address = str(sys.argv[1])
 
# takes second argument from command prompt as port number
Port = int(sys.argv[2])
 
"""
binds the server to an entered IP address and at the
specified port number.
The client must be aware of these parameters
"""
server.bind((IP_address, Port))
 
"""
listens for 100 active connections. This number can be
increased as per convenience.
"""
server.listen(100)
 
list_of_clients = []
 
def clientthread(conn, addr):
 
    # sends a message to the client whose user object is conn
    conn.send("Welcome to this chatroom!")
 
    while True:
            try:
                message = conn.recv(2048)
                if message:
 
                    """prints the message and address of the
                    user who just sent the message on the server
                    terminal"""
                    print ("<" + addr[0] + "> " + message)
 
                    # Calls broadcast function to send message to all
                    message_to_send = "<" + addr[0] + "> " + message
                    broadcast(message_to_send, conn)
 
                else:
                    """message may have no content if the connection
                    is broken, in this case we remove the connection"""
                    remove(conn)
 
            except:
                continue
 
"""Using the below function, we broadcast the message to all
clients who's object is not the same as the one sending
the message """
def broadcast(message, connection):
    for clients in list_of_clients:
        if clients!=connection:
            try:
                clients.send(message)
            except:
                clients.close()
 
                # if the link is broken, we remove the client
                remove(clients)
 
"""The following function simply removes the object
from the list that was created at the beginning of
the program"""
def remove(connection):
    if connection in list_of_clients:
        list_of_clients.remove(connection)
 
while True:
 
    """Accepts a connection request and stores two parameters,
    conn which is a socket object for that user, and addr
    which contains the IP address of the client that just
    connected"""
    conn, addr = server.accept()
 
    """Maintains a list of clients for ease of broadcasting
    a message to all available people in the chatroom"""
    list_of_clients.append(conn)
 
    # prints the address of the user that just connected
    print (addr[0] + " connected")
 
    # creates and individual thread for every user
    # that connects
    start_new_thread(clientthread,(conn,addr))    
 
conn.close()
server.close()
Open Oryx

Python Chat

import socket
from threading import Thread

# server's IP address
SERVER_HOST = "0.0.0.0"
SERVER_PORT = 5002 # port we want to use
separator_token = "<SEP>" # we will use this to separate the client name & message

# initialize list/set of all connected client's sockets
client_sockets = set()
# create a TCP socket
s = socket.socket()
# make the port as reusable port
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
# bind the socket to the address we specified
s.bind((SERVER_HOST, SERVER_PORT))
# listen for upcoming connections
s.listen(5)
print(f"[*] Listening as {SERVER_HOST}:{SERVER_PORT}")


def listen_for_client(cs):
    """
    This function keep listening for a message from `cs` socket
    Whenever a message is received, broadcast it to all other connected clients
    """
    while True:
        try:
            # keep listening for a message from `cs` socket
            msg = cs.recv(1024).decode()
        except Exception as e:
            # client no longer connected
            # remove it from the set
            print(f"[!] Error: {e}")
            client_sockets.remove(cs)
        else:
            # if we received a message, replace the <SEP> 
            # token with ": " for nice printing
            msg = msg.replace(separator_token, ": ")
        # iterate over all connected sockets
        for client_socket in client_sockets:
            # and send the message
            client_socket.send(msg.encode())

while True:
    # we keep listening for new connections all the time
    client_socket, client_address = s.accept()
    print(f"[+] {client_address} connected.")
    # add the new connected client to connected sockets
    client_sockets.add(client_socket)
    # start a new thread that listens for each client's messages
    t = Thread(target=listen_for_client, args=(client_socket,))
    # make the thread daemon so it ends whenever the main thread ends
    t.daemon = True
    # start the thread
    t.start()
    
 import socket
import random
from threading import Thread
from datetime import datetime
from colorama import Fore, init, Back

# init colors
init()

# set the available colors
colors = [Fore.BLUE, Fore.CYAN, Fore.GREEN, Fore.LIGHTBLACK_EX, 
    Fore.LIGHTBLUE_EX, Fore.LIGHTCYAN_EX, Fore.LIGHTGREEN_EX, 
    Fore.LIGHTMAGENTA_EX, Fore.LIGHTRED_EX, Fore.LIGHTWHITE_EX, 
    Fore.LIGHTYELLOW_EX, Fore.MAGENTA, Fore.RED, Fore.WHITE, Fore.YELLOW
]

# choose a random color for the client
client_color = random.choice(colors)

# server's IP address
# if the server is not on this machine, 
# put the private (network) IP address (e.g 192.168.1.2)
SERVER_HOST = "127.0.0.1"
SERVER_PORT = 5002 # server's port
separator_token = "<SEP>" # we will use this to separate the client name & message

# initialize TCP socket
s = socket.socket()
print(f"[*] Connecting to {SERVER_HOST}:{SERVER_PORT}...")
# connect to the server
s.connect((SERVER_HOST, SERVER_PORT))
print("[+] Connected.")

def listen_for_messages():
    while True:
        message = s.recv(1024).decode()
        print("\n" + message)

# make a thread that listens for messages to this client & print them
t = Thread(target=listen_for_messages)
# make the thread daemon so it ends whenever the main thread ends
t.daemon = True
# start the thread
t.start()

while True:
    # input message we want to send to the server
    to_send =  input()
    # a way to exit the program
    if to_send.lower() == 'q':
        break
    # add the datetime, name & the color of the sender
    date_now = datetime.now().strftime('%Y-%m-%d %H:%M:%S') 
    to_send = f"{client_color}[{date_now}] {name}{separator_token}{to_send}{Fore.RESET}"
    # finally, send the message
    s.send(to_send.encode())

# close the socket
s.close()

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