您可以使用 setsockopt() 在已打开的套接字上设置 TCP keepalive 计时器。
import socket
def set_keepalive_linux(sock, after_idle_sec=1, interval_sec=3, max_fails=5):
"""Set TCP keepalive on an open socket.
It activates after 1 second (after_idle_sec) of idleness,
then sends a keepalive ping once every 3 seconds (interval_sec),
and closes the connection after 5 failed ping (max_fails), or 15 seconds
"""
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPIDLE, after_idle_sec)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPINTVL, interval_sec)
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_KEEPCNT, max_fails)
def set_keepalive_osx(sock, after_idle_sec=1, interval_sec=3, max_fails=5):
"""Set TCP keepalive on an open socket.
sends a keepalive ping once every 3 seconds (interval_sec)
"""
# scraped from /usr/include, not exported by python's socket module
TCP_KEEPALIVE = 0x10
sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
sock.setsockopt(socket.IPPROTO_TCP, TCP_KEEPALIVE, interval_sec)
有关 Windows 上的等效选项,请参阅 msdn。查看Python 源代码,您似乎需要在 Unix 中设置SO_KEEPALIVE
类似于sock.setsockopt
,并且 [可选?] 设置SIO_KEEPALIVE_VALS
为sock.ioctl
.