Got a unit test for the problem. According to hg bisect,
The first bad revision is:
changeset: 535:9b766e181f13
user: Sergey Schetinin <ser...@maluke.com>
date: Thu Feb 03 00:01:03 2011 +0200
summary: * refactor req.body to use .make_body_seekable() instead of
duplicating the code
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"""
Test forking and Request.copy().
This test should be skipped on Windows.
Daniel Holth <dho...@fastmail.fm>
"""
from multiprocessing import Process
from webob import Request, Response
from wsgiref.simple_server import make_server
import httplib
import os
import random
import sys
import threading
import time
import urllib2
def watchdog():
time.sleep(5)
os._exit(1) # does not call atexit handlers etc.
def serve(server):
threading.Thread(target=watchdog).start()
server.serve_forever()
def test_fork():
"""See whether request.copy() is possible after a fork, [when the
application is running in a background thread]."""
counter = []
def application(environ, start_response):
if len(counter):
os._exit(0)
counter.append(1)
r = Request(environ)
r.copy()
return Response(content_type="text/plain", body="Success!")(environ, start_response)
port = random.randint(((1<<16)-1)/2, (1<<16)-1)
# XXX retry if port is unavailable
server = make_server('localhost', port, application)
worker = Process(target=serve, args=(server,))
worker.start()
assert urllib2.urlopen("http://localhost:%d/"; % port, timeout=5).read() == "Success!"
try:
urllib2.urlopen("http://localhost:%d/"; % port).read() # exit on second request
except (urllib2.HTTPError, httplib.BadStatusLine):
# server called sys.exit() instead of answering request
pass
worker.join()
if __name__ == "__main__":
test_fork()
