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import errno
import logging
import socket
import sys
import unittest
import time
import warnings
from datetime import datetime
from datetime import timedelta
import mock
from .. import (
requires_network, onlyPy3, onlyPy26OrOlder,
TARPIT_HOST, VALID_SOURCE_ADDRESSES, INVALID_SOURCE_ADDRESSES,
)
from ..port_helpers import find_unused_port
from urllib3 import (
encode_multipart_formdata,
HTTPConnectionPool,
)
from urllib3.exceptions import (
ConnectTimeoutError,
EmptyPoolError,
DecodeError,
MaxRetryError,
ReadTimeoutError,
ProtocolError,
NewConnectionError,
)
from six import b, u
from six.moves.urllib.parse import urlencode
from urllib3.util.retry import Retry, RequestHistory
from urllib3.util.timeout import Timeout
from dummyserver.testcase import HTTPDummyServerTestCase, SocketDummyServerTestCase
from dummyserver.server import NoIPv6Warning, HAS_IPV6_AND_DNS
from threading import Event
log = logging.getLogger('urllib3.connectionpool')
log.setLevel(logging.NOTSET)
log.addHandler(logging.StreamHandler(sys.stdout))
SHORT_TIMEOUT = 0.001
LONG_TIMEOUT = 0.01
def wait_for_socket(ready_event):
ready_event.wait()
ready_event.clear()
class TestConnectionPoolTimeouts(SocketDummyServerTestCase):
def test_timeout_float(self):
block_event = Event()
ready_event = self.start_basic_handler(block_send=block_event, num=2)
# Pool-global timeout
pool = HTTPConnectionPool(self.host, self.port, timeout=SHORT_TIMEOUT, retries=False)
wait_for_socket(ready_event)
self.assertRaises(ReadTimeoutError, pool.request, 'GET', '/')
block_event.set() # Release block
# Shouldn't raise this time
wait_for_socket(ready_event)
block_event.set() # Pre-release block
pool.request('GET', '/')
def test_conn_closed(self):
block_event = Event()
self.start_basic_handler(block_send=block_event, num=1)
pool = HTTPConnectionPool(self.host, self.port, timeout=SHORT_TIMEOUT, retries=False)
conn = pool._get_conn()
pool._put_conn(conn)
try:
pool.urlopen('GET', '/')
self.fail("The request should fail with a timeout error.")
except ReadTimeoutError:
if conn.sock:
self.assertRaises(socket.error, conn.sock.recv, 1024)
finally:
pool._put_conn(conn)
block_event.set()
def test_timeout(self):
# Requests should time out when expected
block_event = Event()
ready_event = self.start_basic_handler(block_send=block_event, num=6)
# Pool-global timeout
timeout = Timeout(read=SHORT_TIMEOUT)
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout, retries=False)
wait_for_socket(ready_event)
conn = pool._get_conn()
self.assertRaises(ReadTimeoutError, pool._make_request, conn, 'GET', '/')
pool._put_conn(conn)
block_event.set() # Release request
wait_for_socket(ready_event)
block_event.clear()
self.assertRaises(ReadTimeoutError, pool.request, 'GET', '/')
block_event.set() # Release request
# Request-specific timeouts should raise errors
pool = HTTPConnectionPool(self.host, self.port, timeout=LONG_TIMEOUT, retries=False)
conn = pool._get_conn()
wait_for_socket(ready_event)
now = time.time()
self.assertRaises(ReadTimeoutError, pool._make_request, conn, 'GET', '/', timeout=timeout)
delta = time.time() - now
block_event.set() # Release request
self.assertTrue(delta < LONG_TIMEOUT, "timeout was pool-level LONG_TIMEOUT rather than request-level SHORT_TIMEOUT")
pool._put_conn(conn)
wait_for_socket(ready_event)
now = time.time()
self.assertRaises(ReadTimeoutError, pool.request, 'GET', '/', timeout=timeout)
delta = time.time() - now
self.assertTrue(delta < LONG_TIMEOUT, "timeout was pool-level LONG_TIMEOUT rather than request-level SHORT_TIMEOUT")
block_event.set() # Release request
# Timeout int/float passed directly to request and _make_request should
# raise a request timeout
wait_for_socket(ready_event)
self.assertRaises(ReadTimeoutError, pool.request, 'GET', '/', timeout=SHORT_TIMEOUT)
block_event.set() # Release request
wait_for_socket(ready_event)
conn = pool._new_conn()
# FIXME: This assert flakes sometimes. Not sure why.
self.assertRaises(ReadTimeoutError, pool._make_request, conn, 'GET', '/', timeout=SHORT_TIMEOUT)
block_event.set() # Release request
def test_connect_timeout(self):
url = '/'
host, port = TARPIT_HOST, 80
timeout = Timeout(connect=SHORT_TIMEOUT)
# Pool-global timeout
pool = HTTPConnectionPool(host, port, timeout=timeout)
conn = pool._get_conn()
self.assertRaises(ConnectTimeoutError, pool._make_request, conn, 'GET', url)
# Retries
retries = Retry(connect=0)
self.assertRaises(MaxRetryError, pool.request, 'GET', url, retries=retries)
# Request-specific connection timeouts
big_timeout = Timeout(read=LONG_TIMEOUT, connect=LONG_TIMEOUT)
pool = HTTPConnectionPool(host, port, timeout=big_timeout, retries=False)
conn = pool._get_conn()
self.assertRaises(ConnectTimeoutError, pool._make_request, conn, 'GET', url, timeout=timeout)
pool._put_conn(conn)
self.assertRaises(ConnectTimeoutError, pool.request, 'GET', url, timeout=timeout)
def test_total_applies_connect(self):
host, port = TARPIT_HOST, 80
timeout = Timeout(total=None, connect=SHORT_TIMEOUT)
pool = HTTPConnectionPool(host, port, timeout=timeout)
conn = pool._get_conn()
self.assertRaises(ConnectTimeoutError, pool._make_request, conn, 'GET', '/')
timeout = Timeout(connect=3, read=5, total=SHORT_TIMEOUT)
pool = HTTPConnectionPool(host, port, timeout=timeout)
conn = pool._get_conn()
self.assertRaises(ConnectTimeoutError, pool._make_request, conn, 'GET', '/')
def test_total_timeout(self):
block_event = Event()
ready_event = self.start_basic_handler(block_send=block_event, num=2)
wait_for_socket(ready_event)
# This will get the socket to raise an EAGAIN on the read
timeout = Timeout(connect=3, read=SHORT_TIMEOUT)
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout, retries=False)
self.assertRaises(ReadTimeoutError, pool.request, 'GET', '/')
block_event.set()
wait_for_socket(ready_event)
block_event.clear()
# The connect should succeed and this should hit the read timeout
timeout = Timeout(connect=3, read=5, total=SHORT_TIMEOUT)
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout, retries=False)
self.assertRaises(ReadTimeoutError, pool.request, 'GET', '/')
def test_create_connection_timeout(self):
timeout = Timeout(connect=SHORT_TIMEOUT, total=LONG_TIMEOUT)
pool = HTTPConnectionPool(TARPIT_HOST, self.port, timeout=timeout, retries=False)
conn = pool._new_conn()
self.assertRaises(ConnectTimeoutError, conn.connect)
class TestConnectionPool(HTTPDummyServerTestCase):
def setUp(self):
self.pool = HTTPConnectionPool(self.host, self.port)
def test_get(self):
r = self.pool.request('GET', '/specific_method',
fields={'method': 'GET'})
self.assertEqual(r.status, 200, r.data)
def test_post_url(self):
r = self.pool.request('POST', '/specific_method',
fields={'method': 'POST'})
self.assertEqual(r.status, 200, r.data)
def test_urlopen_put(self):
r = self.pool.urlopen('PUT', '/specific_method?method=PUT')
self.assertEqual(r.status, 200, r.data)
def test_wrong_specific_method(self):
# To make sure the dummy server is actually returning failed responses
r = self.pool.request('GET', '/specific_method',
fields={'method': 'POST'})
self.assertEqual(r.status, 400, r.data)
r = self.pool.request('POST', '/specific_method',
fields={'method': 'GET'})
self.assertEqual(r.status, 400, r.data)
def test_upload(self):
data = "I'm in ur multipart form-data, hazing a cheezburgr"
fields = {
'upload_param': 'filefield',
'upload_filename': 'lolcat.txt',
'upload_size': len(data),
'filefield': ('lolcat.txt', data),
}
r = self.pool.request('POST', '/upload', fields=fields)
self.assertEqual(r.status, 200, r.data)
def test_one_name_multiple_values(self):
fields = [
('foo', 'a'),
('foo', 'b'),
]
# urlencode
r = self.pool.request('GET', '/echo', fields=fields)
self.assertEqual(r.data, b'foo=a&foo=b')
# multipart
r = self.pool.request('POST', '/echo', fields=fields)
self.assertEqual(r.data.count(b'name="foo"'), 2)
def test_request_method_body(self):
body = b'hi'
r = self.pool.request('POST', '/echo', body=body)
self.assertEqual(r.data, body)
fields = [('hi', 'hello')]
self.assertRaises(TypeError, self.pool.request, 'POST', '/echo', body=body, fields=fields)
def test_unicode_upload(self):
fieldname = u('myfile')
filename = u('\xe2\x99\xa5.txt')
data = u('\xe2\x99\xa5').encode('utf8')
size = len(data)
fields = {
u('upload_param'): fieldname,
u('upload_filename'): filename,
u('upload_size'): size,
fieldname: (filename, data),
}
r = self.pool.request('POST', '/upload', fields=fields)
self.assertEqual(r.status, 200, r.data)
def test_nagle(self):
""" Test that connections have TCP_NODELAY turned on """
# This test needs to be here in order to be run. socket.create_connection actually tries to
# connect to the host provided so we need a dummyserver to be running.
pool = HTTPConnectionPool(self.host, self.port)
conn = pool._get_conn()
pool._make_request(conn, 'GET', '/')
tcp_nodelay_setting = conn.sock.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY)
self.assertTrue(tcp_nodelay_setting)
def test_socket_options(self):
"""Test that connections accept socket options."""
# This test needs to be here in order to be run. socket.create_connection actually tries to
# connect to the host provided so we need a dummyserver to be running.
pool = HTTPConnectionPool(self.host, self.port, socket_options=[
(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
])
s = pool._new_conn()._new_conn() # Get the socket
using_keepalive = s.getsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE) > 0
self.assertTrue(using_keepalive)
s.close()
def test_disable_default_socket_options(self):
"""Test that passing None disables all socket options."""
# This test needs to be here in order to be run. socket.create_connection actually tries to
# connect to the host provided so we need a dummyserver to be running.
pool = HTTPConnectionPool(self.host, self.port, socket_options=None)
s = pool._new_conn()._new_conn()
using_nagle = s.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY) == 0
self.assertTrue(using_nagle)
s.close()
def test_defaults_are_applied(self):
"""Test that modifying the default socket options works."""
# This test needs to be here in order to be run. socket.create_connection actually tries to
# connect to the host provided so we need a dummyserver to be running.
pool = HTTPConnectionPool(self.host, self.port)
# Get the HTTPConnection instance
conn = pool._new_conn()
# Update the default socket options
conn.default_socket_options += [(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)]
s = conn._new_conn()
nagle_disabled = s.getsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY) > 0
using_keepalive = s.getsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE) > 0
self.assertTrue(nagle_disabled)
self.assertTrue(using_keepalive)
def test_connection_error_retries(self):
""" ECONNREFUSED error should raise a connection error, with retries """
port = find_unused_port()
pool = HTTPConnectionPool(self.host, port)
try:
pool.request('GET', '/', retries=Retry(connect=3))
self.fail("Should have failed with a connection error.")
except MaxRetryError as e:
self.assertEqual(type(e.reason), NewConnectionError)
def test_timeout_success(self):
timeout = Timeout(connect=3, read=5, total=None)
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout)
pool.request('GET', '/')
# This should not raise a "Timeout already started" error
pool.request('GET', '/')
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout)
# This should also not raise a "Timeout already started" error
pool.request('GET', '/')
timeout = Timeout(total=None)
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout)
pool.request('GET', '/')
def test_tunnel(self):
# note the actual httplib.py has no tests for this functionality
timeout = Timeout(total=None)
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout)
conn = pool._get_conn()
try:
conn.set_tunnel(self.host, self.port)
except AttributeError: # python 2.6
conn._set_tunnel(self.host, self.port)
conn._tunnel = mock.Mock(return_value=None)
pool._make_request(conn, 'GET', '/')
conn._tunnel.assert_called_once_with()
# test that it's not called when tunnel is not set
timeout = Timeout(total=None)
pool = HTTPConnectionPool(self.host, self.port, timeout=timeout)
conn = pool._get_conn()
conn._tunnel = mock.Mock(return_value=None)
pool._make_request(conn, 'GET', '/')
self.assertEqual(conn._tunnel.called, False)
def test_redirect(self):
r = self.pool.request('GET', '/redirect', fields={'target': '/'}, redirect=False)
self.assertEqual(r.status, 303)
r = self.pool.request('GET', '/redirect', fields={'target': '/'})
self.assertEqual(r.status, 200)
self.assertEqual(r.data, b'Dummy server!')
def test_bad_connect(self):
pool = HTTPConnectionPool('badhost.invalid', self.port)
try:
pool.request('GET', '/', retries=5)
self.fail("should raise timeout exception here")
except MaxRetryError as e:
self.assertEqual(type(e.reason), NewConnectionError)
def test_keepalive(self):
pool = HTTPConnectionPool(self.host, self.port, block=True, maxsize=1)
r = pool.request('GET', '/keepalive?close=0')
r = pool.request('GET', '/keepalive?close=0')
self.assertEqual(r.status, 200)
self.assertEqual(pool.num_connections, 1)
self.assertEqual(pool.num_requests, 2)
def test_keepalive_close(self):
pool = HTTPConnectionPool(self.host, self.port,
block=True, maxsize=1, timeout=2)
r = pool.request('GET', '/keepalive?close=1', retries=0,
headers={
"Connection": "close",
})
self.assertEqual(pool.num_connections, 1)
# The dummyserver will have responded with Connection:close,
# and httplib will properly cleanup the socket.
# We grab the HTTPConnection object straight from the Queue,
# because _get_conn() is where the check & reset occurs
# pylint: disable-msg=W0212
conn = pool.pool.get()
self.assertEqual(conn.sock, None)
pool._put_conn(conn)
# Now with keep-alive
r = pool.request('GET', '/keepalive?close=0', retries=0,
headers={
"Connection": "keep-alive",
})
# The dummyserver responded with Connection:keep-alive, the connection
# persists.
conn = pool.pool.get()
self.assertNotEqual(conn.sock, None)
pool._put_conn(conn)
# Another request asking the server to close the connection. This one
# should get cleaned up for the next request.
r = pool.request('GET', '/keepalive?close=1', retries=0,
headers={
"Connection": "close",
})
self.assertEqual(r.status, 200)
conn = pool.pool.get()
self.assertEqual(conn.sock, None)
pool._put_conn(conn)
# Next request
r = pool.request('GET', '/keepalive?close=0')
def test_post_with_urlencode(self):
data = {'banana': 'hammock', 'lol': 'cat'}
r = self.pool.request('POST', '/echo', fields=data, encode_multipart=False)
self.assertEqual(r.data.decode('utf-8'), urlencode(data))
def test_post_with_multipart(self):
data = {'banana': 'hammock', 'lol': 'cat'}
r = self.pool.request('POST', '/echo',
fields=data,
encode_multipart=True)
body = r.data.split(b'\r\n')
encoded_data = encode_multipart_formdata(data)[0]
expected_body = encoded_data.split(b'\r\n')
# TODO: Get rid of extra parsing stuff when you can specify
# a custom boundary to encode_multipart_formdata
"""
We need to loop the return lines because a timestamp is attached
from within encode_multipart_formdata. When the server echos back
the data, it has the timestamp from when the data was encoded, which
is not equivalent to when we run encode_multipart_formdata on
the data again.
"""
for i, line in enumerate(body):
if line.startswith(b'--'):
continue
self.assertEqual(body[i], expected_body[i])
def test_check_gzip(self):
r = self.pool.request('GET', '/encodingrequest',
headers={'accept-encoding': 'gzip'})
self.assertEqual(r.headers.get('content-encoding'), 'gzip')
self.assertEqual(r.data, b'hello, world!')
def test_check_deflate(self):
r = self.pool.request('GET', '/encodingrequest',
headers={'accept-encoding': 'deflate'})
self.assertEqual(r.headers.get('content-encoding'), 'deflate')
self.assertEqual(r.data, b'hello, world!')
def test_bad_decode(self):
self.assertRaises(DecodeError, self.pool.request,
'GET', '/encodingrequest',
headers={'accept-encoding': 'garbage-deflate'})
self.assertRaises(DecodeError, self.pool.request,
'GET', '/encodingrequest',
headers={'accept-encoding': 'garbage-gzip'})
def test_connection_count(self):
pool = HTTPConnectionPool(self.host, self.port, maxsize=1)
pool.request('GET', '/')
pool.request('GET', '/')
pool.request('GET', '/')
self.assertEqual(pool.num_connections, 1)
self.assertEqual(pool.num_requests, 3)
def test_connection_count_bigpool(self):
http_pool = HTTPConnectionPool(self.host, self.port, maxsize=16)
http_pool.request('GET', '/')
http_pool.request('GET', '/')
http_pool.request('GET', '/')
self.assertEqual(http_pool.num_connections, 1)
self.assertEqual(http_pool.num_requests, 3)
def test_partial_response(self):
pool = HTTPConnectionPool(self.host, self.port, maxsize=1)
req_data = {'lol': 'cat'}
resp_data = urlencode(req_data).encode('utf-8')
r = pool.request('GET', '/echo', fields=req_data, preload_content=False)
self.assertEqual(r.read(5), resp_data[:5])
self.assertEqual(r.read(), resp_data[5:])
def test_lazy_load_twice(self):
# This test is sad and confusing. Need to figure out what's
# going on with partial reads and socket reuse.
pool = HTTPConnectionPool(self.host, self.port, block=True, maxsize=1, timeout=2)
payload_size = 1024 * 2
first_chunk = 512
boundary = 'foo'
req_data = {'count': 'a' * payload_size}
resp_data = encode_multipart_formdata(req_data, boundary=boundary)[0]
req2_data = {'count': 'b' * payload_size}
resp2_data = encode_multipart_formdata(req2_data, boundary=boundary)[0]
r1 = pool.request('POST', '/echo', fields=req_data, multipart_boundary=boundary, preload_content=False)
self.assertEqual(r1.read(first_chunk), resp_data[:first_chunk])
try:
r2 = pool.request('POST', '/echo', fields=req2_data, multipart_boundary=boundary,
preload_content=False, pool_timeout=0.001)
# This branch should generally bail here, but maybe someday it will
# work? Perhaps by some sort of magic. Consider it a TODO.
self.assertEqual(r2.read(first_chunk), resp2_data[:first_chunk])
self.assertEqual(r1.read(), resp_data[first_chunk:])
self.assertEqual(r2.read(), resp2_data[first_chunk:])
self.assertEqual(pool.num_requests, 2)
except EmptyPoolError:
self.assertEqual(r1.read(), resp_data[first_chunk:])
self.assertEqual(pool.num_requests, 1)
self.assertEqual(pool.num_connections, 1)
def test_for_double_release(self):
MAXSIZE=5
# Check default state
pool = HTTPConnectionPool(self.host, self.port, maxsize=MAXSIZE)
self.assertEqual(pool.num_connections, 0)
self.assertEqual(pool.pool.qsize(), MAXSIZE)
# Make an empty slot for testing
pool.pool.get()
self.assertEqual(pool.pool.qsize(), MAXSIZE-1)
# Check state after simple request
pool.urlopen('GET', '/')
self.assertEqual(pool.pool.qsize(), MAXSIZE-1)
# Check state without release
pool.urlopen('GET', '/', preload_content=False)
self.assertEqual(pool.pool.qsize(), MAXSIZE-2)
pool.urlopen('GET', '/')
self.assertEqual(pool.pool.qsize(), MAXSIZE-2)
# Check state after read
pool.urlopen('GET', '/').data
self.assertEqual(pool.pool.qsize(), MAXSIZE-2)
pool.urlopen('GET', '/')
self.assertEqual(pool.pool.qsize(), MAXSIZE-2)
def test_release_conn_parameter(self):
MAXSIZE=5
pool = HTTPConnectionPool(self.host, self.port, maxsize=MAXSIZE)
self.assertEqual(pool.pool.qsize(), MAXSIZE)
# Make request without releasing connection
pool.request('GET', '/', release_conn=False, preload_content=False)
self.assertEqual(pool.pool.qsize(), MAXSIZE-1)
def test_dns_error(self):
pool = HTTPConnectionPool('thishostdoesnotexist.invalid', self.port, timeout=0.001)
self.assertRaises(MaxRetryError, pool.request, 'GET', '/test', retries=2)
def test_source_address(self):
for addr, is_ipv6 in VALID_SOURCE_ADDRESSES:
if is_ipv6 and not HAS_IPV6_AND_DNS:
warnings.warn("No IPv6 support: skipping.",
NoIPv6Warning)
continue
pool = HTTPConnectionPool(self.host, self.port,
source_address=addr, retries=False)
r = pool.request('GET', '/source_address')
self.assertEqual(r.data, b(addr[0]))
def test_source_address_error(self):
for addr in INVALID_SOURCE_ADDRESSES:
pool = HTTPConnectionPool(self.host, self.port, source_address=addr, retries=False)
# FIXME: This assert flakes sometimes. Not sure why.
self.assertRaises(NewConnectionError, pool.request, 'GET', '/source_address?{0}'.format(addr))
def test_stream_keepalive(self):
x = 2
for _ in range(x):
response = self.pool.request(
'GET',
'/chunked',
headers={
'Connection': 'keep-alive',
},
preload_content=False,
retries=False,
)
for chunk in response.stream():
self.assertEqual(chunk, b'123')
self.assertEqual(self.pool.num_connections, 1)
self.assertEqual(self.pool.num_requests, x)
def test_chunked_gzip(self):
response = self.pool.request(
'GET',
'/chunked_gzip',
preload_content=False,
decode_content=True,
)
self.assertEqual(b'123' * 4, response.read())
def test_cleanup_on_connection_error(self):
'''
Test that connections are recycled to the pool on
connection errors where no http response is received.
'''
poolsize = 3
with HTTPConnectionPool(self.host, self.port, maxsize=poolsize, block=True) as http:
self.assertEqual(http.pool.qsize(), poolsize)
# force a connection error by supplying a non-existent
# url. We won't get a response for this and so the
# conn won't be implicitly returned to the pool.
self.assertRaises(MaxRetryError,
http.request, 'GET', '/redirect', fields={'target': '/'}, release_conn=False, retries=0)
r = http.request('GET', '/redirect', fields={'target': '/'}, release_conn=False, retries=1)
r.release_conn()
# the pool should still contain poolsize elements
self.assertEqual(http.pool.qsize(), http.pool.maxsize)
class TestRetry(HTTPDummyServerTestCase):
def setUp(self):
self.pool = HTTPConnectionPool(self.host, self.port)
def test_max_retry(self):
try:
r = self.pool.request('GET', '/redirect',
fields={'target': '/'},
retries=0)
self.fail("Failed to raise MaxRetryError exception, returned %r" % r.status)
except MaxRetryError:
pass
def test_disabled_retry(self):
""" Disabled retries should disable redirect handling. """
r = self.pool.request('GET', '/redirect',
fields={'target': '/'},
retries=False)
self.assertEqual(r.status, 303)
r = self.pool.request('GET', '/redirect',
fields={'target': '/'},
retries=Retry(redirect=False))
self.assertEqual(r.status, 303)
pool = HTTPConnectionPool('thishostdoesnotexist.invalid', self.port, timeout=0.001)
self.assertRaises(NewConnectionError, pool.request, 'GET', '/test', retries=False)
def test_read_retries(self):
""" Should retry for status codes in the whitelist """
retry = Retry(read=1, status_forcelist=[418])
resp = self.pool.request('GET', '/successful_retry',
headers={'test-name': 'test_read_retries'},
retries=retry)
self.assertEqual(resp.status, 200)
def test_read_total_retries(self):
""" HTTP response w/ status code in the whitelist should be retried """
headers = {'test-name': 'test_read_total_retries'}
retry = Retry(total=1, status_forcelist=[418])
resp = self.pool.request('GET', '/successful_retry',
headers=headers, retries=retry)
self.assertEqual(resp.status, 200)
def test_retries_wrong_whitelist(self):
"""HTTP response w/ status code not in whitelist shouldn't be retried"""
retry = Retry(total=1, status_forcelist=[202])
resp = self.pool.request('GET', '/successful_retry',
headers={'test-name': 'test_wrong_whitelist'},
retries=retry)
self.assertEqual(resp.status, 418)
def test_default_method_whitelist_retried(self):
""" urllib3 should retry methods in the default method whitelist """
retry = Retry(total=1, status_forcelist=[418])
resp = self.pool.request('OPTIONS', '/successful_retry',
headers={'test-name': 'test_default_whitelist'},
retries=retry)
self.assertEqual(resp.status, 200)
def test_retries_wrong_method_list(self):
"""Method not in our whitelist should not be retried, even if code matches"""
headers = {'test-name': 'test_wrong_method_whitelist'}
retry = Retry(total=1, status_forcelist=[418],
method_whitelist=['POST'])
resp = self.pool.request('GET', '/successful_retry',
headers=headers, retries=retry)
self.assertEqual(resp.status, 418)
def test_read_retries_unsuccessful(self):
headers = {'test-name': 'test_read_retries_unsuccessful'}
resp = self.pool.request('GET', '/successful_retry',
headers=headers, retries=1)
self.assertEqual(resp.status, 418)
def test_retry_reuse_safe(self):
""" It should be possible to reuse a Retry object across requests """
headers = {'test-name': 'test_retry_safe'}
retry = Retry(total=1, status_forcelist=[418])
resp = self.pool.request('GET', '/successful_retry',
headers=headers, retries=retry)
self.assertEqual(resp.status, 200)
resp = self.pool.request('GET', '/successful_retry',
headers=headers, retries=retry)
self.assertEqual(resp.status, 200)
def test_retry_return_in_response(self):
headers = {'test-name': 'test_retry_return_in_response'}
retry = Retry(total=2, status_forcelist=[418])
resp = self.pool.request('GET', '/successful_retry',
headers=headers, retries=retry)
self.assertEqual(resp.status, 200)
self.assertEqual(resp.retries.total, 1)
self.assertEqual(resp.retries.history, (RequestHistory('GET', '/successful_retry', None, 418, None),))
def test_retry_redirect_history(self):
resp = self.pool.request('GET', '/redirect', fields={'target': '/'})
self.assertEqual(resp.status, 200)
self.assertEqual(resp.retries.history, (RequestHistory('GET', '/redirect?target=%2F', None, 303, '/'),))
def test_multi_redirect_history(self):
r = self.pool.request('GET', '/multi_redirect', fields={'redirect_codes': '303,302,200'}, redirect=False)
self.assertEqual(r.status, 303)
self.assertEqual(r.retries.history, tuple())
r = self.pool.request('GET', '/multi_redirect', retries=10,
fields={'redirect_codes': '303,302,301,307,302,200'})
self.assertEqual(r.status, 200)
self.assertEqual(r.data, b'Done redirecting')
self.assertEqual([(request_history.status, request_history.redirect_location) for request_history in r.retries.history], [
(303, '/multi_redirect?redirect_codes=302,301,307,302,200'),
(302, '/multi_redirect?redirect_codes=301,307,302,200'),
(301, '/multi_redirect?redirect_codes=307,302,200'),
(307, '/multi_redirect?redirect_codes=302,200'),
(302, '/multi_redirect?redirect_codes=200')
])
class TestRetryAfter(HTTPDummyServerTestCase):
def setUp(self):
self.pool = HTTPConnectionPool(self.host, self.port)
def test_retry_after(self):
# Request twice in a second to get a 429 response.
r = self.pool.request('GET', '/retry_after',
fields={'status': '429 Too Many Requests'},
retries=False)
r = self.pool.request('GET', '/retry_after',
fields={'status': '429 Too Many Requests'},
retries=False)
self.assertEqual(r.status, 429)
r = self.pool.request('GET', '/retry_after',
fields={'status': '429 Too Many Requests'},
retries=True)
self.assertEqual(r.status, 200)
# Request twice in a second to get a 503 response.
r = self.pool.request('GET', '/retry_after',
fields={'status': '503 Service Unavailable'},
retries=False)
r = self.pool.request('GET', '/retry_after',
fields={'status': '503 Service Unavailable'},
retries=False)
self.assertEqual(r.status, 503)
r = self.pool.request('GET', '/retry_after',
fields={'status': '503 Service Unavailable'},
retries=True)
self.assertEqual(r.status, 200)
# Ignore Retry-After header on status which is not defined in
# Retry.RETRY_AFTER_STATUS_CODES.
r = self.pool.request('GET', '/retry_after',
fields={'status': "418 I'm a teapot"},
retries=True)
self.assertEqual(r.status, 418)
def test_redirect_after(self):
r = self.pool.request('GET', '/redirect_after', retries=False)
self.assertEqual(r.status, 303)
t = time.time()
r = self.pool.request('GET', '/redirect_after')
self.assertEqual(r.status, 200)
delta = time.time() - t
self.assertTrue(delta >= 1)
t = time.time()
timestamp = t + 2
r = self.pool.request('GET', '/redirect_after?date=' + str(timestamp))
self.assertEqual(r.status, 200)
delta = time.time() - t
self.assertTrue(delta >= 1)
# Retry-After is past
t = time.time()
timestamp = t - 1
r = self.pool.request('GET', '/redirect_after?date=' + str(timestamp))
delta = time.time() - t
self.assertEqual(r.status, 200)
self.assertTrue(delta < 1)
if __name__ == '__main__':
unittest.main()
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