/usr/share/pyshared/zope/server/maxsockets.py is in python-zope.server 3.8.6-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# Copyright (c) 2004 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Find max number of sockets allowed.
"""
# Medusa max_sockets module.
import socket
import select
# several factors here we might want to test:
# 1) max we can create
# 2) max we can bind
# 3) max we can listen on
# 4) max we can connect
def max_server_sockets():
# TODO: This should be a configuration value as it takes a long time to
# compute on Mac OSX
return 100
sl = []
while 1:
try:
s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
s.bind (('',0))
s.listen(5)
sl.append (s)
except:
break
num = len(sl)
for s in sl:
s.close()
del sl
return num
def max_client_sockets():
# TODO: This should be a configuration value as it takes a long time to
# compute on Mac OSX
return 100
# make a server socket
server = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
server.bind (('', 9999))
server.listen (5)
sl = []
while 1:
try:
s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
s.connect (('', 9999))
conn, addr = server.accept()
sl.append ((s,conn))
except:
break
num = len(sl)
for s,c in sl:
s.close()
c.close()
del sl
return num
def max_select_sockets():
# TODO: This should be a configuration value as it takes a long time to
# compute on Mac OSX
return 100
sl = []
while 1:
try:
num = len(sl)
for i in range(1 + len(sl) // 20):
# Increase exponentially.
s = socket.socket (socket.AF_INET, socket.SOCK_STREAM)
s.bind (('',0))
s.listen(5)
sl.append (s)
select.select(sl,[],[],0)
except:
break
for s in sl:
s.close()
del sl
return num
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