當用此 Web Server 接收 PubSubHubbub Hub Server 發送過來的各類請求時,遇到了一個大問題:google
隨着時間推移,處於 ESTABLISHED 狀態的 Socket 鏈接愈來愈多,慢慢抵達500多個,spa
TCP X.X.X.X:8080 72.14.192.68:55693 ESTABLISHED
TCP X.X.X.X:8080 74.125.126.80:59064 ESTABLISHEDcode
最終致使服務爆出異常「too many file descriptors in select」,當此異常發生時,已沒法挽救,只能重啓服務ip
解決方法
ci
from twisted.protocols.policies import TimeoutMixinget
class TimeoutTester(protocol.Protocol, policies.TimeoutMixin):
conn_timeout = 3
data_timeout = 300
def connectionMade(self):
self.setTimeout(self.conn_timeout)
def dataReceived(self, data):
self.setTimeout(self.data_timeout)
def connectionLost(self, reason=None):
self.setTimeout(None)io