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#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vi:ts=4:et
from . import localhost
import pycurl
import pytest
import unittest
import select
import sys
import flaky
from . import appmanager
from . import util
setup_module_1, teardown_module_1 = appmanager.setup(('app', 8380))
setup_module_2, teardown_module_2 = appmanager.setup(('app', 8381))
setup_module_3, teardown_module_3 = appmanager.setup(('app', 8382))
def setup_module(mod):
setup_module_1(mod)
setup_module_2(mod)
setup_module_3(mod)
def teardown_module(mod):
teardown_module_3(mod)
teardown_module_2(mod)
teardown_module_1(mod)
@flaky.flaky(max_runs=3)
class MultiSocketSelectTest(unittest.TestCase):
def setUp(self):
self.m = pycurl.CurlMulti()
self.m.handles = []
def tearDown(self):
for c in self.m.handles:
self.m.remove_handle(c)
c.close()
self.m.close()
@pytest.mark.skipif(sys.platform == 'win32', reason='https://github.com/pycurl/pycurl/issues/819')
def test_multi_socket_select(self):
sockets = set()
timeout = 0
urls = [
# we need libcurl to actually wait on the handles,
# and initiate polling.
# thus use urls that sleep for a bit.
'http://%s:8380/short_wait' % localhost,
'http://%s:8381/short_wait' % localhost,
'http://%s:8382/short_wait' % localhost,
]
socket_events = []
# socket callback
def socket(event, socket, multi, data):
if event == pycurl.POLL_REMOVE:
#print("Remove Socket %d"%socket)
sockets.remove(socket)
else:
if socket not in sockets:
#print("Add socket %d"%socket)
sockets.add(socket)
socket_events.append((event, multi))
# init
m = self.m
m.setopt(pycurl.M_SOCKETFUNCTION, socket)
for url in urls:
c = util.DefaultCurl()
# save info in standard Python attributes
c.url = url
c.body = util.BytesIO()
c.http_code = -1
m.handles.append(c)
# pycurl API calls
c.setopt(c.URL, c.url)
c.setopt(c.WRITEFUNCTION, c.body.write)
m.add_handle(c)
# get data
#num_handles = len(m.handles)
while (pycurl.E_CALL_MULTI_PERFORM==m.socket_all()[0]):
pass
timeout = m.timeout()
if timeout == -1:
timeout = 1000
# timeout might be -1, indicating that all work is done
# XXX make sure there is always work to be done here?
while timeout >= 0:
(rr, wr, er) = select.select(sockets,sockets,sockets,timeout/1000.0)
socketSet = set(rr+wr+er)
if socketSet:
for s in socketSet:
while True:
(ret,running) = m.socket_action(s,0)
if ret!=pycurl.E_CALL_MULTI_PERFORM:
break
else:
(ret,running) = m.socket_action(pycurl.SOCKET_TIMEOUT,0)
if running==0:
break
for c in m.handles:
# save info in standard Python attributes
c.http_code = c.getinfo(c.HTTP_CODE)
# at least in and remove events per socket
assert len(socket_events) >= 6, 'Less than 6 socket events: %s' % repr(socket_events)
# print result
for c in m.handles:
self.assertEqual('success', c.body.getvalue().decode())
self.assertEqual(200, c.http_code)
# multi, not curl handle
self.check(pycurl.POLL_IN, m, socket_events)
self.check(pycurl.POLL_REMOVE, m, socket_events)
def check(self, event, multi, socket_events):
for event_, multi_ in socket_events:
if event == event_ and multi == multi_:
return
assert False, '%d %s not found in socket events' % (event, multi)
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