聊天/服务器客户端Python

Question

我目前正在为大学做一个项目，我必须在python 3.4中创建一个多聊天客户端和服务器。 由于某种原因，它将连接到一个客户端，但是当另一个客户端尝试连接时，它什么也不做。 但是，当第一个客户端断开连接时，另一个客户端将与其连接。 有没有人有任何想法，我已经尝试了3个多小时。

客户端服务器

import socket

def Main():
    print("Send 'q' to exit\n")
    address = str(input("ip:port -> "))
    nick = input("nick: ")

    try:
        if address.index(":") != 0:
            host = address[:address.index(":")]
            port = int(address[address.index(":")+1:])
    except ValueError:
        host = address
        port = 5000

    s = socket.socket()
    s.connect((host, port))

    message = input("-> ")

    while message != "q":
        send_message = message + "pPp" + nick
        send_message2 = send_message.encode("UTF-8")
        s.send(bytes(send_message2))
        data = s.recv(1024)
        data_decoded = data.decode("UTF-8")
        data2 = data_decoded
        print(data_decoded)
        messageServer = str(data_decoded[:data_decoded.index("pPp")])
        nickServer = str(data_decoded[data_decoded.index("pPp")+3:])

        if not data_decoded == data2:
            print(nickServer + ": " + messageServer)
        message = input("-> ")
    s.close()

if __name__ == "__main__":
    Main()

服务器端：

import socket
import time
import os
from threading import Thread
folderPath = "Chat Logs"
filePath = folderPath + "/" + str(time.strftime("%H-%M-%S_%d-%m-%Y")) + ".txt"
def clientHandler(c):
    while True:
        data = c.recv(1024)
        if not data:
            break
        data_decoded = data.decode("UTF-8")
        message = str(data_decoded[:data_decoded.index("pPp")])
        nick = str(data_decoded[data_decoded.index("pPp")+3:])
        print(nick + "$" + message)
        saveChat(nick, message)
        print("   Sending: " + data_decoded)
        c.send(bytes(data_decoded.encode("UTF-8")))
    c.close()
def saveChat(nick, message):
    if not os.path.exists(folderPath):
        os.makedirs(folderPath)
    if not os.path.exists(filePath):
        f = open(filePath, "a")
        f.close()
    f = open(filePath, "a")
    f.write(nick + ": " + message + "\n")
    f.close()
def Main():
    host = str(socket.gethostbyname(socket.gethostname()))
    port = 5000
    print(host + ":" + str(port) + "\n")
    Clients = int(input("Clients: "))
    s = socket.socket()
    s.bind((host, port))
    s.listen(Clients)
    while True:
        c, addr = s.accept()
        print("Connection from: " + str(addr))
        Thread(target=clientHandler(c)).start()
    s.close()
if __name__ == "__main__":
    Main()

Answer 1

您正在正确初始化Thread对象。 尝试以下方法之一：

    Thread(target=clientHandler, args=(c,)).start()

要么

    Thread(target=lambda c=c: clientHandler(c)).start()

线程将callable作为target参数。 您的代码不会传递可调用的方法，而是调用clientHandler并将其返回值传递给Thread.__init__ 。

Answer 2

server.py的更改代码对我有用。 如果我们在线程处理程序中接受连接并在调用处理程序时将套接字对象作为参数传递，该怎么办？

def clientHandler(s):
    while True:
        c, addr = s.accept()
        print("Connection from: " + str(addr))
        data = c.recv(1024)
        if not data:
            break
        data_decoded = data.decode("UTF-8")
        message = str(data_decoded[:data_decoded.index("pPp")])
        nick = str(data_decoded[data_decoded.index("pPp")+3:])
        print(nick + "$" + message)
        #saveChat(nick, message)
        print("   Sending: " + data_decoded)
        c.send(bytes(data_decoded.encode("UTF-8")))
    c.close()

在主要功能中，我更改了以下几行。

while True:
    #c, addr = s.accept()
    #print("Connection from: " + str(addr))
    Thread(target=clientHandler(s)).start()

这是连接结果：

>>> 
10.212.245.81:5000

Clients: 3
Connection from: ('10.212.245.81', 60945)
c1$hi
   Sending: hipPpc1
Connection from: ('10.212.245.81', 60976)
c2$hi
   Sending: hipPpc2
Connection from: ('10.212.245.81', 61096)
c3$hi
   Sending: hipPpc3

PS我没有尝试通过超过客户端连接请求数量来检查代码。