socket.error: [Errno 10054] An existing connection was forcibly closed by the remote host

最近在網絡編程開發中遇到socket.error: [Errno 10054] An existing connection was forcibly closed by the remote host這樣的錯誤，查了些資料也沒什么用；

最后發現原來是socket server在設計時提前將socket套接字對象關掉了，所以導致下次使用找不到socket server的套接字對象而報錯

import socket
from threading import  Thread
import time
command=["hostname","ipconfig","systeminfo"]
command="###".join(command)
print(command)
s=socket.socket()
socket.setdefaulttimeout(5)
s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
addr=("0.0.0.0",9999)
s.bind(addr)
s.listen(5)
print("waiting for connecting.....")
def fun(s,c,a):
    for i in command.split("###"):
        time.sleep(1)
        n=c.send(str(i).encode())
        print "send command {} to client".format(i),n,"bytes"
    c.close()
    #s.close() while True:
    c,a=s.accept()
    if c:
        print("I have enter into windwos ")
        print a,c
    t=Thread(target=fun,args=(s,c,a))
    t.setDaemon(True)
    t.start()

注釋掉s.close()就可以正常運行，多次調用了
經實驗，如果在socket server套接字對象關閉之前調用，程序是可以正常運行的，關閉之后再調用，就會報錯了！！！