Python TCPServer 多线程多客户端通信的实现

最简单、原始的TCP通信demo

服务端Http请求：

import socket

# 创建一个servicesocke
serviceSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 给服务器绑定地址(ip地址,端口号)
serviceSocket.bind(("192.168.171.1", 80))

print("等待客户端接入")
# sock 是客户端的socket信息
# addr 是客户端的地址(ip,端口)
sock, addr = serviceSocket.accept()
print(f"sock from client:{sock}")
print(f"addr of client:{addr}")

while True:
 # 接收客户端的请求
 recvData = sock.recv(1024)
 print("客户端说:％s" ％ (recvData.decode("utf-8")))
 sendData = input("服务器说:")
 # 发送(回复)数据给客户端
 sock.send(sendData.encode("utf-8"))

客户端Http请求：

import socket

# 创建客户端socket
clientSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

# 连接服务器
clientSocket.connect(("192.168.171.1", 80))

while True:
 # 发送消息给服务器
 sendData = input("客户端说:")
 if sendData == "bye":
   clientSocket.send(sendData.encode("utf-8")) # 编码:将数据装换成二进制形式
   break
 clientSocket.send(sendData.encode("utf-8"))
 recvData = clientSocket.recv(1024)
 print("服务器说:％s" ％ (recvData.decode("utf-8"))) # 解码:将二进制转换成字符

1、在TCP中，客户端的实现流程：

创建客户端的socket对象建立与服务器之间的联系发送请求接收数据关闭连接

2、服务端的实现流程：

创建服务端的socket对象绑定服务端的地址设置 * 等待客户端的连接接收客户端的请求返回处理的结果到客户端

ThreadingTCPServer 多线程多客户端通信自动重连demo

socketserver继承图：

TCPServer

# from socketserver import TCPServer, BaseRequestHandler, ThreadingTCPServer
from socketserver import TCPServer, StreamRequestHandler, ThreadingMixIn
import traceback

# class MyBaseRequestHandler(BaseRequestHandler):
class MyBaseRequestHandler(StreamRequestHandler):

def handle(self):
   self.addr = self.request.getpeername()
   self.server.users[self.addr[1]] = self.request
   message = "IP " + self.addr[0] + ":" + str(self.addr[1]) + " Connected..."
   print(message)

while True:
     try:
       data = self.request.recv(1024).decode('UTF-8', 'ignore').strip()
       print(f'receive from {self.client_address}:{data}')

back_data = (f"response\"" + data + "\":\n").encode("utf8")
       self.request.sendall(back_data)
     except:
       traceback.print_exc()
       break

# 源码：class ThreadingTCPServer(ThreadingMixIn, TCPServer): pass
# 从ThreadingMixIn和TCPServer继承，实现多线程
class MyThreadingTCPServer(ThreadingMixIn, TCPServer):
 def __init__(self, server_address, RequestHandlerClass):
   TCPServer.__init__(self, server_address, RequestHandlerClass)
   self.users = {}

class MyTCPserver():
 def __init__(self, server_addr='192.168.1.109', server_port=23):
   self.server_address = server_addr
   self.server_port = server_port
   self.server_tuple = (self.server_address, self.server_port)

def run(self):
   # server = TCPServer(self.server_tuple, MyBaseRequestHandler)
   server = MyThreadingTCPServer(self.server_tuple, MyBaseRequestHandler)
   server.serve_forever()

if __name__ == '__main__':
 myserver = MyTCPserver()
 myserver.run()

在telnet 下开启开启两个客户端，本电脑的IP为192.168.1.109，开两个客户端后，TCPServer的终端出现同一个IP但是不同端口的连接：

TCPClient

import socket
import time

class MyClient:
 host = '192.168.1.109'
 port = 23
 bufsiz = 1024
 addr = None
 skt = None

def __init__(self, host=None, port=None):
   if host != None:
     self.host = host

if port != None:
     self.port = port

if self.addr == None:
     self.addr = (self.host, self.port)

self.doConnection()

def doConnection(self):
   try:
     self.skt = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     self.skt.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
     print(self.addr)
     self.skt.connect(self.addr)
   except:
     pass

def run(self):
   while True:
     try:
       _time = time.strftime("％Y-％m-％d ％H:％M:％S", time.localtime())
       self.skt.sendall(f'{_time}:i am clent1 '.encode('utf-8'))
       data = self.skt.recv(self.bufsiz)
       print(data.decode('utf-8', 'ignore'))
       if not data:
         break
       print(data.strip())
       time.sleep(5)
     except socket.error:
       print('socket error, reconnection') # 自动重连
       time.sleep(3)
       self.doConnection()
     except:
       print('other error')

self.skt.close()

myclient = MyClient()
myclient.run()

上面用的是telnet工具来作为客户端，这里是用代码实现模拟的客户端。

来源：https://blog.csdn.net/qq_31362767/article/details/103758119