# 检测端口是否可以连通
import socket
import time

def check_tcp_port(host, port, timeout=3):
    start_time = time.time()
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.settimeout(timeout)
    try:
        sock.connect((host, port))
        elapsed_time = time.time() - start_time
        return True, elapsed_time
    except socket.error as err:
        return False, 0
    finally:
        sock.close()

###
body+="\r\n"
print("nls端口连通性探测：")
body+="nls端口连通性探测："
body+="\r\n"

# 要检查的主机和端口
host = 'www.baidu.com'
port = 80
# 检查端口
is_open, latency = check_tcp_port(host, port)
if is_open:
    print(f"Port {port} on {host} is open. Latency: {latency:.3f} seconds")
    body+=f"Port {port} on {host} is open. Latency: {latency:.3f} seconds"
    body += "\r\n"
else:
    print(f"Port {port} on {host} is not open or the host is unreachable.")
    body+=f"Port {port} on {host} is not open or the host is unreachable."
    body += "\r\n"
print()