Python示例-TCP Port Scan

import socket
import threading

# target host address
host = "127.0.0.1"
# thread list
threads = []


def tcp_connect_scan(host, port):
    '''
    TCP connect scanning
    @param host: ip, host name or domain name
    @param port: port number
    '''
    try:
        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        sock.settimeout(1)
        result = sock.connect_ex((host, port))
        if result == 0:
            print("Host {} port {} status open".format(host, port))
        else:
            print("Host {} port {} status close".format(host, port))
    except socket.error as err:
        print("{}".format(err))
    finally:
        sock.close()
    

def tcp_syn_scan(host, port):
    '''
    TCP SYN scanning
    @param host: ip, host name or domain name
    @param port: port number
    '''
    # To be continued
    pass


def main():
    for port in range(0, 65535):
        t = threading.Thread(target=tcp_connect_scan, args=(host, port))
        threads.append(t)
        t.start()
    for task in threads:
        task.join()
    

if __name__ == '__main__':
    main()