服务端打开12345端口,客户端无法使用12345端口

node2:/root#netstat -nap | grep 12345
tcp        0      0 192.168.137.3:12345         0.0.0.0:*                   LISTEN      2990/python         
node2:/root#

node2:/root/sbin#cat test_connect.py 
# coding = utf-8
# -*- coding:utf-8 -*-
import socket
import time

ip_port = ('192.168.137.3',12345)

s1=socket.socket(socket.AF_INET,socket.SOCK_STREAM)#创建套接字
addr=('192.168.137.3',22)
s1.bind(ip_port)
s1.connect(addr)
time.sleep(10000)
node2:/root/sbin#python test_connect.py 
Traceback (most recent call last):
  File "test_connect.py", line 10, in
    s1.bind(ip_port)
  File "/usr/local/python27/lib/python2.7/socket.py", line 227, in meth
    return getattr(self._sock,name)(*args)
socket.error: [Errno 98] Address already in use