利用Python实现端口扫描器的全过程

import socket
socket.socket(family, type)

import socket 


# 创建tcp的套接字 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# ...这⾥是使⽤套接字的功能（省略）... 
# 关闭套接字
s.close()

import socket 

# 创建udp的套接字 
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) 
# ...这⾥是使⽤套接字的功能（省略）... 
# 不⽤的时候，关闭套接字 
s.close()

import socket
from datetime import datetime
from multiprocessing.dummy import Pool as ThreadPool


class ScanPort:
    def __init__(self):
        self.ip = None

    def scan_port(self, port):
        try:
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            res = s.connect_ex((self.ip, port))
            if res == 0:  # 端口开启
                print('Ip:{} Port:{} IS OPEN'.fORMat(self.ip, port))
            else:
                print('Ip:{} Port:{}: IS NOT OPEN'.format(self.ip, port))
        except Exception as e:
            print(e)
        finally:
            s.close()

    def start(self):
        remote_server = input("输入要扫描的远程主机:")
        self.ip = socket.gethostbyname(remote_server)
        ports = [i for i in range(1, 1025)]
        socket.setdefaulttimeout(0.5)
        # 开始时间
        t1 = datetime.now()
        # 设置多进程
        threads = []
        pool = ThreadPool(processes=8)
        pool.map(self.scan_port, ports)
        pool.close()
        pool.join()

        print('端口扫描已完成，耗时：', datetime.now() - t1)


ScanPort().start()